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WO2018170667A1 - Système radio de multiplexage par ondelette orthogonale standard unifié - Google Patents

Système radio de multiplexage par ondelette orthogonale standard unifié Download PDF

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Publication number
WO2018170667A1
WO2018170667A1 PCT/CN2017/077268 CN2017077268W WO2018170667A1 WO 2018170667 A1 WO2018170667 A1 WO 2018170667A1 CN 2017077268 W CN2017077268 W CN 2017077268W WO 2018170667 A1 WO2018170667 A1 WO 2018170667A1
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data
user
standard orthogonal
orthogonal wave
signal
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PCT/CN2017/077268
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Chinese (zh)
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焦彦华
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焦彦华
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Priority to PCT/CN2017/077268 priority Critical patent/WO2018170667A1/fr
Priority to CN201780000315.8A priority patent/CN107113081B/zh
Publication of WO2018170667A1 publication Critical patent/WO2018170667A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0215—Architecture aspects
    • H04J14/0217—Multi-degree architectures, e.g. having a connection degree greater than two
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0227—Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation

Definitions

  • the present invention relates to the field of radio communication and radar technologies, and more particularly to a unified standard orthogonal wave sub-multiplexing radio system.
  • Radiocommunication technology and radar technology have evolved from the very beginning along their respective technical routes and have never really combined into one.
  • the existing communication radar integrated signal scheme can be roughly divided into two categories: a single carrier scheme and a multi-carrier scheme.
  • Publication No. CN101447837A In the single-carrier scheme, multi-user communication and multi-target radar detection mainly use code division multiple access or spread spectrum techniques, such as direct sequence spread spectrum technology, frequency hopping spread spectrum technology and linear frequency modulation spread spectrum technology.
  • the main disadvantages of the single-carrier scheme are the disadvantages of low spectrum utilization, low frequency dispersion resistance, large computational complexity, and complex systems.
  • the multi-carrier scheme is mainly developed on the basis of orthogonal frequency division multiplexing communication. It adopts filter bank technology or modulation symbol domain-based processing technology in communication radar data processing; the main disadvantages of orthogonal frequency division multiplexing scheme The system is complex, the peak average power ratio is high, and the transmission efficiency is not high.
  • an object of the present invention is to provide a unified standard orthogonal wave sub-multiplexing radio system, which not only performs unified transmission and reception processing on the same software and hardware platform.
  • Quasi-orthogonal wave sub-multiplexing of baseband signals, simultaneous high-speed, reliable multi-user radio communication, high-precision, real-time multi-user passive radar positioning and multi-target active radar detection, and the system has spectrum utilization and transmission efficiency High, low computation, small size, simple structure and so on.
  • the invention starts from the essence of the electromagnetic wave, extends the wave-particle duality of the electromagnetic wave from the microscopic to the macroscopic, and extends the probability wave packet in the quantum mechanics to the macroscopic classical wave, and generates the standard orthogonal wave wavelet sub-multiplexing technique. At the same time, it satisfies the unified signal of multi-user, high-speed and reliable data communication and multi-target, high-precision radar detection function; the invention adopts a demand-driven design method and proposes a configurable unified standard with high reliability and high maintenance.
  • Orthogonal wave sub-multiplexing radio system the invention not only surpasses the existing orthogonal frequency division multiplexing communication radar integration scheme in data communication, but also has ultra-high precision and ultra-long-range radar detection on radar detection ability.
  • a unified standard orthogonal wave sub-multiplexing radio system for synchronizing standard orthogonal wave sub-multiplexing baseband signals by generating transmission and reception processing on the same hardware and software platform, and realizing high-speed and reliable multi-user radio Communication, high-precision, real-time multi-user passive radar positioning and multi-target active radar detection;
  • unified standard orthogonal wave sub-multiplexed radio system mainly consists of antenna array and RF front-end and unified standard orthogonal wave sub-multiplexing transceiver Machine composition;
  • unified standard orthogonal wave sub-multiplexing transceiver includes unified standard orthogonal wave sub-multiplexing baseband signal generating component, multi-user communication receiving signal parallel processing component, multi-user communication relay signal parallel processing component, and more User passive radar positioning parallel processing component and multi-target active radar detection integrated processing component.
  • the transceiver sub-unit is a unified standard orthogonal wave sub-multiplexing transceiver
  • the unified standard orthogonal wave sub-multiplexing transceiver adopts a CPCI bus structure, including unified The standard orthogonal wave sub-multiplexing baseband signal generating component, the multi-user communication receiving signal parallel processing component, the multi-user communication relay signal parallel processing component, the multi-user passive radar positioning parallel processing component and the multi-target active radar detecting integrated processing component.
  • the unified standard orthogonal wave sub-multiplexing baseband signal generating component is configured to generate a unified standard for multi-user radio communication, multi-user passive radar positioning, and multi-target active radar detection functions.
  • the cross-wave sub-multiplexing baseband signal includes the following modules:
  • Standard orthogonal wave sub-generation module for generating standard orthogonal, energy-concentrated, time-frequency locality Standard orthogonal wave
  • the unified signal gene generating module is configured to perform optimal allocation of limited standard orthogonal wave sub-resources in time and space between multiple users to avoid interference between multiple users and generate a unified signal gene;
  • the data error correction coding module is configured to complete source coding and channel coding of system state data and communication original data, improve communication efficiency and reliability, and generate direct communication parallel symbol data;
  • a signal gene coding module configured to complete signal gene coding of direct communication parallel symbol data and relay communication parallel symbol data, to generate unified genetic coded data
  • the standard orthogonal wave submodulation module completes the standard orthogonal wave submodulation of the unified gene encoded data, and generates a unified standard orthogonal wave sub-multiplexed baseband signal.
  • the multi-user communication receiving signal parallel processing component is configured to perform parallel processing on the antenna array and the baseband signal received and preprocessed by the radio frequency front end, and simultaneously receive and recover the transmission by the multiple source users.
  • Raw data, complete high-speed, reliable multi-user radio communication reception including the following modules:
  • a parallel receiving synchronization module configured to complete parallel receiving synchronization of the received baseband signal and the multi-user synchronization signal, and extracting a multi-user communication transmitting data baseband signal
  • a standard orthogonal wave sub-demodulation module is configured to perform standard orthogonal wave sub-demodulation on a multi-user communication data baseband signal, and extract data genetic coded data sent by multiple users;
  • a data gene decoding module configured to complete data gene decoding of data gene encoded data sent by multiple users, and extract received parallel symbol data sent by multiple users;
  • the data error correction decoding module is configured to complete channel error correction decoding and source decoding of parallel symbol data sent by multiple users, recover system state data and communication original data sent by multiple users, and complete high-speed and reliable multi-user radio communication reception. .
  • the multi-user communication relay signal parallel processing component is configured to perform parallel processing on the antenna array and the baseband signal received and preprocessed by the radio frequency front end, and simultaneously receive and relay multiple pre-transmissions.
  • the relay data sent by the level user completes the high-speed and reliable multi-user radio communication relay, including the following modules:
  • a parallel relay synchronization module configured to complete parallel relay synchronization of the received baseband signal and the multi-user synchronization signal, and extract a multi-user communication relay data baseband signal;
  • the standard orthogonal wave sub-demodulation module is configured to complete standard orthogonal wave sub-demodulation of the baseband signal of the multi-user communication relay data, and extract data genetic code data transmitted by the multi-user;
  • the data gene decoding module is configured to complete data gene decoding of data gene encoded data sent by multiple users, extract relay parallel symbol data sent by multiple users, and complete high-speed and reliable multi-user radio communication relay.
  • the multi-user passive radar positioning parallel processing component is configured to perform parallel processing on at least four baseband signals received and preprocessed by the antenna array and the radio frequency front end, and simultaneously obtain multiple users.
  • a multi-user signal identification module configured to perform identification of a multi-user transmit baseband signal in the received baseband signal, and extract a unified signal gene of the identified user
  • a multi-user transmit signal regeneration module for performing standard orthogonal wave sub-demodulation, data gene decoding, data gene re-encoding, and standard orthogonal wave sub-modulation of the identified user data baseband signal, and then generating a data baseband signal transmitted by the identified user;
  • a multi-user pseudo-range measurement module configured to perform a digital correlation operation on the received at least four baseband signals and the identified multi-user regenerated baseband signal, and calculate a pseudorange of the identified user to at least four antennas;
  • the multi-user differential positioning module is used to complete the differential operation of the pseudo-distance of the identified user to at least 4 antennas, calculate the coordinates of the multi-user in the antenna coordinate system, and complete high-precision, real-time multi-user passive radar positioning.
  • the multi-target active radar detection integrated processing component is configured to comprehensively process at least four baseband signals received and preprocessed by the antenna array and the radio frequency front end, and simultaneously obtain relative orientations of multiple targets.
  • the multi-target identification module mainly performs digital correlation calculation on the received at least four baseband signals and the locally transmitted baseband signals, and calculates an absolute distance of at least four antennas to multiple targets respectively;
  • the multi-objective feature extraction module mainly performs the integrated operation of the absolute distances of at least four antennas to multiple targets, calculates the coordinates of the multi-target in the antenna coordinate system, and completes high-precision, real-time multi-target active radar detection;
  • the standard orthogonal wave sub-generation module generates a set of standard orthogonal, energy-concentrated, time-frequency localized standard orthogonal wave elements; the set of standard orthogonal wave elements is a large number An ensemble of quantum formation with the same coherent state
  • w j > must satisfy the following constraints:
  • ⁇ E (r) is the spatial component of the quantum state.
  • the unified signal gene generating module is configured to perform optimal allocation of time and space in a multi-user for a limited standard orthogonal wave sub-resource to generate a unified signal gene;
  • the unified signal gene is composed of a synchronous signal gene and multiple data genes; the synchronization signal gene is mainly used for wave synchronization of signals, and the synchronization precision reaches one sampling interval; the data signal gene is mainly used for signal data transmission, and the standard orthogonal wave is used.
  • the principle of allocation is that the waves overlapping each other in the same time and space cannot exceed the error correction capability of the error correction code; the signal genes allocated to the user are dynamically generated or configured according to the system state and environmental conditions.
  • the signal gene encoding module performs data genetic coding on the direct communication parallel symbol data and the relay communication parallel symbol data to generate unified genetic coded data, and the constraint conditions are as follows:
  • M is the number of standard orthogonal wave elements in the synchronization signal gene
  • ⁇ is the synchronization signal amplitude factor
  • data trans j is the direct communication parallel symbol data.
  • data delay j is relay communication parallel symbol data, To relay communication data signal genes.
  • the standard orthogonal wave submodulation module performs standard orthogonal wave submodulation on the unified gene encoded data to generate a unified standard orthogonal wave sub-multiplexed baseband signal, and the constraint conditions are as follows:
  • sync j,m is the synchronous gene encoded data
  • data j,k is the direct communication or relay communication data genetically encoded data
  • w j (n) is the standard orthogonal wave and N w is the standard orthogonal wave sub-length
  • the parallel receiving synchronization module synchronizes the parallel reception of the received baseband signal and the multi-user synchronization signal to extract a multi-user communication transmission data baseband signal; and the parallel reception synchronization is first obtained.
  • the user's unified signal gene generates a synchronization signal according to the synchronization signal gene, and then digitally correlates the received baseband signal with the locally generated user synchronization signal, and finally performs synchronous extraction of the user communication transmission data baseband signal according to the digital correlation result, and the constraint condition as follows:
  • M is the number of standard orthogonal wave elements in the synchronization signal gene
  • ⁇ is the synchronization signal amplitude factor
  • w j (n) is the standard orthogonal wave
  • N w is the standard orthogonal wave length
  • s r (n) For receiving baseband signals;
  • the standard orthogonal wave sub-demodulation module transmits the extracted user communication.
  • the data baseband signal is transmitted with the standard orthogonal wave to perform inner product operation, and the direct communication data gene coded data sent by the user is extracted, and the constraint conditions are as follows:
  • w j (n) is a standard orthogonal wave
  • N w is a standard orthogonal wave sub-length
  • the data gene decoding module performs a row inner product operation on the data gene encoded data sent by the multi-user and the corresponding data gene, and extracts direct communication parallel symbol data sent by the multi-user, and the constraint condition as follows:
  • data j,k is the data encoded data of the standard orthogonal wave sub-demodulation and Generating a data signal gene for the corresponding;
  • the parallel relay synchronization module synchronizes the received baseband signal and the multi-relay pre-stage user synchronization signal to extract a multi-relay pre-stage user relay communication data baseband.
  • Parallel relay synchronization first obtains the unified signal gene of the pre-relay user and generates a synchronization signal according to the synchronization signal gene, and then digitally correlates the received baseband signal with the locally generated pre-stage user synchronization signal, and finally according to The digital correlation result completes the synchronous extraction of the relay baseband communication data baseband signal, and the constraints are as follows:
  • M is the number of standard orthogonal wave elements in the synchronization signal gene
  • ⁇ is the synchronization signal amplitude factor
  • w j (n) is the standard orthogonal wave
  • N w is the standard orthogonal wave length.
  • s r (n) is the received baseband signal;
  • the standard orthogonal wave sub-demodulation module The user communication data baseband signal and the standard orthogonal wave are subjected to inner product operation, and the data genetic code data transmitted by the pre-relay user is extracted, and the constraint conditions are as follows:
  • w j (n) is a standard orthogonal wave
  • N w is a standard orthogonal wave sub-length
  • the data gene decoding module performs a row inner product operation on the data gene coded data sent by the pre-relay user and the corresponding relay data gene, and extracts the data sent by the pre-relay user.
  • Relay parallel symbol data with the following constraints:
  • data j,k is the data encoded data of the standard orthogonal wave sub-demodulation and For the corresponding relay data signal gene
  • the multi-user signal identification module first performs a cyclic digital correlation operation on the received baseband signal and a multi-user synchronization signal in a certain range, and then identifies the user according to the digital correlation result, and extracts
  • the unified signal gene of the user has been identified, and the constraints are as follows:
  • M is the number of standard orthogonal wave elements in the synchronization signal gene
  • ⁇ is the synchronization signal amplitude factor
  • w j (n) is the standard orthogonal wave
  • N w is the standard orthogonal wave length
  • s r (n) is the received baseband signal
  • R 0 is the decision threshold.
  • the multi-user transmit signal regeneration module first performs inner product operation on the synchronized recognized user data baseband signal and the standard orthogonal wave to extract the number of the identified user.
  • the data gene encoding data sent by the extracted identified user is used for data gene decoding, and finally the corresponding genetic coding and standard orthogonal wave submodulation of the decoded parallel data symbol data are performed, and the identified user is reproduced.
  • the data signal sent is as follows:
  • w j (n) is a standard orthogonal wave
  • N w is a standard orthogonal wave sub-length.
  • the multi-user pseudo-range measurement module performs digital correlation on the locally-recovered identified user data signals for at least four antennas and the baseband signals received by the radio frequency front end respectively, and extracts the identified users.
  • Pseudo-delay to at least 4 antennas and pseudo-range calculation, respectively, the constraints are as follows:
  • s r j (n) is the baseband signal received by the j-th antenna and the RF front end
  • s t (n) is the reproduced data baseband signal of the identified user
  • R 0 is the decision threshold
  • f s is the sampling frequency
  • c vacuum The speed of light in the middle.
  • the multi-user differential positioning module uses two hyperbolic intersection methods to perform differential positioning of the identified target on at least at least 4 antennas to the pseudo range of the identified target, and calculates
  • the coordinates of the user in the antenna coordinate system have been identified, and the constraints are as follows:
  • a 1 , a 2 , a 3 and a 4 are the coordinates of the receiving antenna, with The pseudo moment for receiving the antenna to the target.
  • the multi-target identification module performs digital correlation on at least at least four antennas and a baseband signal received by the radio frequency front end on the locally transmitted data signals, and extracts at least at least four antennas to multiple
  • the absolute delay of the target and the distance calculation, the constraints are as follows:
  • s r j (n) is the baseband signal received by the jth antenna
  • s t (n) is the locally transmitted data baseband signal
  • R 0 is the decision threshold
  • f s is the sampling frequency and the speed of light in the c vacuum.
  • the multi-target feature extraction module performs a comprehensive solution on a distance matrix of at least four antennas to multiple targets by using a plurality of concentric circle intersection methods to calculate a multi-target
  • the coordinates in the antenna coordinate system are as follows:
  • the present invention adopts the standard orthogonal wave sub-technology, and the standard orthogonal wave itself not only has perfect symmetry at the same time, standard orthogonality, good time-frequency domain locality and energy concentration, but also can be generated according to different situations.
  • FIG. 1 is a block diagram showing a preferred embodiment of a unified standard orthogonal wave sub-multiplexing transceiver in accordance with the present invention
  • FIG. 2 is a signal flow diagram of an embodiment of a unified standard orthogonal wave sub-multiplexing transceiver in accordance with the present invention
  • FIG. 3 is a diagram showing the genetic composition of an embodiment of a unified standard orthogonal wave sub-multiplexed signal according to the present invention.
  • FIG. 4 is a schematic diagram of an embodiment of a standard orthogonal wave submodulation and demodulation in accordance with the present invention.
  • Figure 5 is a diagram showing the relationship between ranging accuracy and sampling frequency of a unified standard orthogonal wave sub-multiplexing radio system according to the present invention
  • Figure 7 is a simulation result of multi-target radar detection of an embodiment of a unified standard orthogonal wave sub-multiplexed radio system in accordance with the present invention.
  • the figure shows an embodiment of a unified standard orthogonal wave sub-multiplexed radio system according to the present invention for synthesizing a standard quadrature wave sub-multiplexed baseband signal by generating transmission and reception processing on the same hardware and software platform.
  • the orthogonal wave sub-multiplexing transceiver adopts a CompactPCI bus structure with hot pluggability, high openness and high reliability, and mainly includes a unified standard orthogonal wave sub-multiplexing baseband signal generating component and a multi-user communication receiving signal.
  • the unified standard orthogonal wave sub-multiplexing radio system embodiment includes an antenna array and a radio frequency
  • the front-end system and the transceiver system, the transceiver is a unified standard orthogonal wave sub-multiplexing transceiver; the unified standard orthogonal wave sub-multiplexing transceiver adopts a CPCI bus structure, including a unified standard The cross-wave sub-multiplexing baseband signal generating component, the multi-user communication receiving signal parallel processing component, the multi-user communication relay signal parallel processing component, the multi-user passive radar positioning parallel processing component and the multi-target active radar detecting integrated processing component.
  • a standard orthogonal wave sub-generation module is configured to generate a standard orthogonal, energy symmetric set, and a standard time-frequency localized good orthogonal wave;
  • the unified signal gene generating module is configured to perform optimal allocation of limited standard orthogonal wave sub-resources in time and space between multiple users to avoid interference between multiple users and generate a unified signal gene;
  • the data error correction coding module is configured to complete source coding and channel coding of system state data and communication original data, improve communication efficiency and reliability, and generate direct communication parallel symbol data;
  • a signal gene coding module configured to complete signal gene coding of direct communication parallel symbol data and relay communication parallel symbol data, to generate unified genetic coded data
  • the standard orthogonal wave submodulation module completes the standard orthogonal wave submodulation of the unified gene encoded data, and generates a unified standard orthogonal wave sub-multiplexed baseband signal.
  • the signal processing of the unified standard orthogonal wave sub-multiplexing transceiver adopts modular flow design, which mainly includes unified standard orthogonal wave sub-multiplexing baseband signal generating unit, multi-user communication receiving signal parallel processing unit, and multi-user communication.
  • the system signal processing flow includes the following:
  • the unified standard orthogonal wave sub-multiplexing baseband signal generating unit generates a unified standard orthogonal wave wave that satisfies both high-speed and reliable multi-user radio communication and high-precision, real-time multi-user passive radar positioning and multi-target active radar detection functions.
  • Branch-multiplexed baseband signal by standard orthogonal wave sub-generation module, unified a signal gene generating module, a data error correction coding module, a signal gene coding module and a standard orthogonal wave submodulation module;
  • a standard orthogonal wave sub-generation module generates a set of standard orthogonal, energy-concentrated, time-frequency localized standard orthogonal wave carriers; the set of standard orthogonal wave elements is a large number of quantum formations having the same coherent state
  • w j > must satisfy the following constraints:
  • o j > can be obtained by solving the non-time-dependent Schrödinger equation.
  • the constraints are as follows:
  • ⁇ E (r) is the spatial component of the quantum state.
  • the unified signal gene generation module performs optimal allocation of time and space in a multi-user for a limited standard orthogonal wave sub-resource to generate a unified signal gene; a unified signal gene and a plurality of data genes are allocated to the unified signal gene allocated to the user.
  • synchronization signal genes are mainly used for signal wave synchronization, synchronization accuracy reaches a sampling interval; data signal genes are mainly used for signal data transmission, the principle of standard orthogonal wave assignment is the same time and space between different users The overlapping waves cannot exceed the error correction capability of the error correction code; the signal genes allocated to the user are dynamically generated or configured according to system status (such as number of users, data rate and capacity, etc.) and environmental conditions (such as multipath effects). .
  • the signal gene coding module performs signal gene coding on transmitting parallel symbol data and relay parallel symbol data to generate unified genetic coded data, and the constraint conditions are as follows:
  • M is the number of standard orthogonal wave elements in the synchronization signal gene
  • ⁇ is the synchronization signal amplitude factor
  • data trans j is the transmitted parallel symbol data.
  • data delay j is relayed parallel symbol data.
  • the standard orthogonal wave submodulation module performs standard orthogonal wave submodulation on the unified gene encoded data to generate a unified standard orthogonal wave sub-multiplexed baseband signal, as shown in FIG. 4, and the constraint conditions are as follows:
  • sync j,m is the sync gene encoding data
  • data j,k is the transmitted or relay gene encoded data
  • w j (n) is the standard orthogonal wave
  • N w is the standard orthogonal wave sub-length.
  • the multi-user communication receiving signal parallel processing unit performs parallel processing on the antenna array and the baseband signal received and preprocessed by the radio frequency front end, and simultaneously receives and recovers original data sent by multiple source users, and completes high-speed and reliable multi-user radio communication receiving, by
  • the parallel receiving synchronization module, the standard orthogonal wave sub-demodulation module, the data gene decoding module and the data error correction decoding module are composed.
  • the parallel receiving synchronization module synchronizes the parallel reception of the received baseband signal and the multi-user synchronization signal to extract the multi-user communication data baseband signal; the parallel reception synchronization first obtains the unified signal gene of the user and generates a synchronization signal according to the synchronization signal gene, and then The received baseband signal is digitally correlated with the locally generated user synchronization signal, and finally the synchronous extraction of the user communication data baseband signal is completed according to the digital correlation result, and the constraints are as follows:
  • M is the number of standard orthogonal wave elements in the synchronization signal gene
  • ⁇ is the synchronization signal amplitude factor
  • w j (n) is the standard orthogonal wave
  • N w is the standard orthogonal wave length
  • s r (n) Is the baseband signal received.
  • the standard orthogonal wave sub-demodulation module performs an inner product operation on the extracted user communication data baseband signal and the standard orthogonal wave carrier, and extracts the data genetic coded data sent by the user, as shown in FIG. 4, and the constraint conditions are as follows:
  • w j (n) is a standard orthogonal wave
  • N w is a standard orthogonal wave sub-length
  • the data gene decoding module performs line inner product operation on the data gene encoded data sent by the multi-user and the corresponding data gene, and extracts the received parallel symbol data sent by the multi-user, and the constraint conditions are as follows:
  • data j,k is the data encoded data of the standard orthogonal wave sub-demodulation and For the corresponding emission data signal gene.
  • the multi-user communication relay signal parallel processing component performs parallel processing on the antenna array and the baseband signal received and preprocessed by the radio frequency front end, and simultaneously receives and relays the relay data sent by the plurality of pre-level users to complete the high-speed and reliable multi-user.
  • the radio communication relay is composed of a parallel relay synchronization module, a standard orthogonal wave sub-demodulation module and a data gene decoding module.
  • the parallel relay synchronization module synchronously synchronizes the received baseband signal and the multi-relay pre-stage user synchronization signal to extract the multi-relay pre-level user communication data baseband signal; the parallel relay synchronization first obtains the relay pre-level user The signal gene is unified and a synchronization signal is generated according to the synchronization signal gene, and then the received baseband signal is digitally correlated with the locally generated relay pre-stage user synchronization signal, and finally based on the digital correlation result Synchronous extraction of the baseband signal of the pre-relay user communication data is completed, and the constraints are as follows:
  • M is the number of standard orthogonal wave elements in the synchronization signal gene
  • ⁇ is the synchronization signal amplitude factor
  • w j (n) is the standard orthogonal wave
  • N w is the standard orthogonal wave length
  • s r (n) is the received baseband signal.
  • the standard orthogonal wave sub-demodulation module performs an inner product operation on the extracted pre-relay user communication data baseband signal and the standard orthogonal wave element, and extracts the data genetic coded data sent by the pre-relay user, and the constraint conditions are as follows:
  • w j (n) is a standard orthogonal wave
  • N w is a standard orthogonal wave sub-length
  • the data gene decoding module performs the intra-product inner product operation on the data gene encoding data sent by the pre-relay user and the corresponding relay data gene, and extracts the relay parallel symbol data sent by the pre-relay user, and the constraint conditions are as follows:
  • data j,k is the data encoded data of the standard orthogonal wave sub-demodulation and For the corresponding relay data signal genes.
  • the multi-user passive radar positioning parallel processing unit performs parallel processing on at least 4 baseband signals received and preprocessed by the antenna array and the RF front end, and simultaneously obtains relative position information of multiple users, and completes high-precision, real-time multi-user passive radar positioning.
  • the utility model is composed of a multi-user signal recognition module, a multi-user transmission signal regeneration module, a multi-user pseudo-range measurement module and a multi-user differential positioning module.
  • the multi-user signal identification module first performs a cyclic digital correlation operation on the received baseband signal and a multi-user synchronization signal in a certain range, and then identifies the user according to the digital correlation result, and extracts the unified signal gene of the identified user, and the constraint conditions are as follows:
  • M is the number of standard orthogonal wave elements in the synchronization signal gene
  • ⁇ is the synchronization signal amplitude factor
  • w j (n) is the standard orthogonal wave
  • N w is the standard orthogonal wave length
  • s r (n) is the received baseband signal
  • R 0 is the decision threshold.
  • the multi-user transmitting signal regeneration module first performs inner product operation on the synchronized recognized user data baseband signal and the standard orthogonal wave, extracts the data genetic code data transmitted by the identified user, and then sends the data gene to the extracted identified user.
  • the encoded data is used for data gene decoding, and finally the corresponding gene coding and standard orthogonal wave sub-modulation are performed on the parallel decoded data symbol data of the gene, and the data signal transmitted by the identified user is reproduced, and the constraint conditions are as follows:
  • w j (n) is a standard orthogonal wave
  • N w is a standard orthogonal wave sub-length.
  • the multi-user pseudo-range measurement module performs digital correlation between the at least four antennas and the baseband signals received by the radio frequency front end respectively on the locally reproduced recognized user data signals, and extracts the pseudo delays of the identified users to at least at least four antennas respectively. Perform pseudorange calculations with the following constraints:
  • s r j (n) is the baseband signal received by the j-th antenna and the RF front end
  • s t (n) is the reproduced data baseband signal of the identified user
  • R 0 is the decision threshold
  • f s is the sampling frequency
  • c vacuum The speed of light in the middle.
  • the multi-user differential positioning module adopts two hyperbolic intersection methods to perform differential positioning of the identified target on the pseudorange of at least 4 antennas to the identified target, and calculates the coordinates of the identified user in the antenna coordinate system, and constrains
  • the conditions are as follows:
  • a 1 , a 2 , a 3 and a 4 are the coordinates of the receiving antenna, with To receive the antenna to the target's pseudorange.
  • the multi-target active radar detection integrated processing unit comprehensively processes at least four baseband signals received and preprocessed by the antenna array and the RF front end, and simultaneously obtains relative position information of multiple targets, and completes high-precision, real-time multi-target active radar detection. It consists of a multi-target recognition module and a multi-target feature extraction module.
  • Multi-target recognition module how many? ? ?
  • the baseband signals received by the road antenna and the RF front end are digitally correlated with the locally transmitted data signals, and the absolute delay of at least 4 antennas to multiple targets is extracted and the distance is calculated.
  • the constraints are as follows:
  • s r j (n) is the baseband signal received by the jth antenna
  • s t (n) is the locally transmitted data baseband signal
  • R 0 is the decision threshold
  • f s is the sampling frequency and the speed of light in the c vacuum.
  • the multi-objective feature extraction module uses a plurality of sets of concentric circle intersection methods to comprehensively solve the distance matrix of at least four antennas to multiple targets, and calculates coordinates of the multi-object in the antenna coordinate system, and the constraint conditions are as follows:
  • the orthogonal wave number is 32, the length of the wave is 32; the signal coding is 16QAM; the synchronization sub-signal length is 64, the data sub-signal is 1024 per symbol length; the baseband sampling frequency is 1 GHz; the channel is Gaussian channel.
  • Vehicle A communicates with vehicle B, which is 78.1 meters away, while measuring distances of 78.2 meters, 3 meters and 3.2 meters in the same direction.
  • the ranging accuracy of the communication radar designed by the method of the present invention is inversely proportional to the sampling frequency of the system, and the higher the sampling rate of the system, the higher the ranging accuracy, for example, when the sampling rate is 1 GHz, the ranging is performed at this time.
  • the accuracy is 0.15 meters.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

La présente invention se rapporte au domaine technique des communications radio et radar, et concerne un système radio de multiplexage par ondelette orthogonale standard unifié, afin de réaliser une communication radio multi-utilisateurs à grande vitesse et fiable, une précision élevée et un positionnement par radar passif multi-utilisateurs en temps réel, et des fonctions de détection de radar actif multi-cibles, par génération et envoi, ainsi que réception et traitement, d'un signal de bande de base de multiplexage par ondelette orthogonale standard unifié sur le même matériel et la même plateforme logicielle. Le système comprend un composant de génération de signal de bande de base de multiplexage par ondelette orthogonale standard unifié, un composant de traitement parallèle de réception de signal de communication multi-utilisateurs, un composant de traitement parallèle de relayage de signal de communication multi-utilisateurs, un composant de traitement parallèle de positionnement de radar passif multi-utilisateurs, et un composant de traitement complet de détection de radar actif multi-cibles. La présente invention réalise l'intégration d'une communication radio, d'un positionnement passif radio, et de fonctions de détection active et peut s'appliquer non seulement à des champs civils tels que la télématique, l'Internet des objets et des capteurs, et des réseaux de positionnement de communication par satellite global, mais également à des champs militaires tels que C4ISR.
PCT/CN2017/077268 2017-03-20 2017-03-20 Système radio de multiplexage par ondelette orthogonale standard unifié WO2018170667A1 (fr)

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