CN105103446B - A signal processing device - Google Patents

Abstract

The invention discloses a signal processing device, which relates to the field of communication and can solve the problem of overhigh power consumption of processing data by a medium access control layer in a communication system with multi-order amplitude modulation, and the specific scheme is as follows: the method comprises the steps of obtaining an initial signal, dividing the initial signal into N-1 paths of signals, obtaining a selection control signal, and selecting one or more paths of the M paths of signals to carry out logic decoding according to the selection control signal, so that a medium access control layer only needs to process decoding signals of partial signals in the initial signal, bandwidth resources are saved, and power consumption of data processing of the medium access control layer is reduced.

Description

A signal processing device

technical field

The present invention relates to the communication field, in particular to a signal processing device.

Background technique

With the development of communication networks, in order to make the network bandwidth meet the needs of most users, most of the signal processing adopts multi-order or high-order modulation and coding methods, in order to increase the data transmission rate.

Usually, for a communication system with multi-level amplitude modulation coding, the receiving end will decode and receive all the data, which requires the MAC (Media Access Control, Media Access Control) layer of the receiving end to support a higher transmission rate, but not every user Both require a higher transmission rate. Therefore, the existing technical solution causes a waste of bandwidth resources and makes the power consumption of the media access control layer at the receiving end too high for processing data.

Contents of the invention

Embodiments of the present invention provide a signal processing device, which can solve the problem of excessive power consumption of data processed by a media access control layer in a multi-level amplitude modulation communication system.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, a signal processing device includes:

The receiver is used to obtain an initial signal, and transmit the initial signal to the branch circuit, wherein the initial signal is an electrical signal encoded by N-order amplitude modulation, and N is an integer greater than 2;

The branching circuit is used to receive the initial signal, separate the initial signal into M signals according to the amplitude, where M=N-1, and output the M signals to the processor;

The selector is configured to select one or more of the M signals according to the obtained selection control signal and send it to the decoder for logic decoding.

With reference to the first aspect, in a first possible implementation manner, the selection control signal is sent by an optical line terminal (OLT) to the signal processing apparatus.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the selection control signal may be sent through a physical layer operation management and maintenance PLOAM message.

With reference to any implementation manner of the first aspect to the second possible implementation manner of the first aspect, in a third possible implementation manner, the branching circuit includes a comparator or a digital-to-analog converter.

With reference to any implementation manner in the first aspect to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, the multiplexing unit is specifically configured to: obtain M thresholds, the The M thresholds include the first threshold, the second threshold...the Mth threshold;

According to the M thresholds, the initial signal is compared with the M thresholds respectively to obtain M signal outputs.

With reference to any of the fourth possible implementations of the first aspect to the first aspect, in a fifth possible implementation, the control signal is generated by the optical line terminal OLT according to the bandwidth package selected by the user The control signal is used to select one or several signals among the M signals.

In a second aspect, a signal processing device includes:

a processor, configured to determine a coding mode corresponding to the first network node according to the determined N-order amplitude modulation coding format, the set bandwidth of the first network node, and the bandwidth of the signal processing device; and according to the determined coding mode generating a selection control signal of the first network node to instruct the first network node to select which or which signals to decode correctly from the N-1 signals after amplitude separation;

An encoder, configured to use the determined encoding method to perform N-order amplitude modulation encoding on the data sent to the first network node;

a transmitter, configured to send the generated selection control signal and encoded data.

In combination with the second aspect, in the first possible implementation,

The first network node is a component of the optical network terminal ONT or a component of the optical network unit ONU.

In combination with the second aspect or the first possible implementation of the second aspect, in the second possible implementation,

The device is a component of an optical line terminal (OLT).

In combination with the second aspect or any possible implementation manner of the second aspect, in a third possible implementation manner,

The selection control signal is transmitted through the physical layer operation management and maintenance PLOAM message.

In a third aspect, a signal processing method includes:

Obtaining an initial signal, the initial signal is an electrical signal encoded by N-order amplitude modulation, where N is an integer greater than 2;

separating the initial signal into M signals according to the amplitude, where M is an integer greater than 2;

Acquire a control signal, and select one or more of the M signals for logical decoding according to the control signal.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the selection control signal is sent by an optical line terminal (OLT).

With reference to the third aspect and the first possible implementation manner of the second aspect, in the first possible implementation manner of the third aspect, the selection control signal may be sent through a physical layer operation management and maintenance PLOAM message.

With reference to the third aspect, in a third possible implementation manner of the third aspect, the separating the initial signal into M signals according to amplitude includes:

Acquire M thresholds, where the M thresholds include the first threshold, the second threshold...the Mth threshold;

According to the M thresholds, the initial signal is compared with the M thresholds respectively to obtain M signal outputs.

With reference to the third aspect, in a fourth possible implementation of the third aspect, the control signal is a control signal generated by the optical line terminal OLT according to the bandwidth package selected by the user, and is used to select one of the M signals or several signals.

In a fourth aspect, an optical network communication system, the network system includes a sending device and a receiving device, including:

The sending device is configured to send an initial optical signal to the receiving device, wherein the initial optical signal is an optical signal encoded by N-order amplitude modulation, where N is an integer greater than 2; according to the bandwidth of the receiving device and The relationship between the bandwidth of the sending device, generating a selection control signal, sending the selection control signal to the receiving device; determining the encoding format, encoding and sending the data to be sent to the receiving device according to the encoding format;

The receiving device is the first aspect or the signal processing device described in any possible implementation manner of the first aspect;

Alternatively, the receiving device is the second aspect or the signal processing device described in any possible implementation manner of the second aspect.

The signal processing device provided by the embodiment of the present invention obtains the initial signal, divides the initial signal into M signals, obtains the control signal, and selects one or more of the M signals according to the control signal for logic decoding , so that the media access control layer only needs to process the decoded signal of a part of the initial signal, which saves bandwidth resources and reduces the power consumption of data processing of the media access control layer.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a schematic flowchart of a signal processing method provided by an embodiment of the present invention;

Fig. 2 is the PAM4 shunt circuit structure schematic diagram that the embodiment of the present invention provides;

FIG. 3 is a schematic structural diagram of a receiver device in a PAM4 encoding format provided by an embodiment of the present invention;

FIG. 4 is a schematic diagram of the internal branching and selection process of the receiving end of the PAM4 encoding format provided by the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a signal processing device provided by an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a network system provided by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one,

Embodiments of the present invention provide a signal processing method, which is applied to a communication system with multi-order amplitude modulation, as shown in FIG. 1 , including the following steps:

Step 101. Acquire an initial signal.

Wherein, the initial signal is an electrical signal encoded by N-order amplitude modulation, and N is an integer greater than 2.

Optionally, before obtaining the initial signal in step 101, the method further includes:

Determine the encoding method.

Further, the determination of the coding mode can be completed through a handshake process between the sending end and the receiving end. In the handshake, the communication parties use dedicated control signals for status indication. This control signal is sent from the sender to the receiver, and from the receiver to the sender. Use the handshake protocol to process cross-clock domain data transmission, and only need to use the pulse detection method to synchronize the handshake signals (REQ (Request, request signal) and ACK (Acknowledge, response signal)) of both parties. In the specific implementation, assuming that REQ, ACK, and the data bus are all in an invalid state during initialization, the sending end first puts the data, such as the encoding method used by the two parties in the communication, into the bus, and then sends a valid REQ signal to the receiving end. The receiving end latches the data bus after detecting a valid REQ signal, and then returns a valid ACK signal to indicate that the read is complete. The sending device cancels the current REQ signal after detecting a valid ACK signal, and the receiving device cancels the ACK signal correspondingly after detecting the REQ cancellation, and a normal handshake communication is completed at this time. After that, the sender can continue to start the next handshake communication, and so on.

In this way, the two sides of the communication determine the encoding method through the handshake process.

For example, the negotiation between the two parties through the handshake process can adopt the double binary (Double Binary, DB) coding method, the 4th-order pulse amplitude modulation coding (Pulse Amplitude Modulation, PAM4), the N-order pulse amplitude modulation coding (Pulse Amplitude Modulation, PAMN), etc. Encoding. Wherein N is an integer greater than 2.

Take the PAM4 encoding method used by both parties as an example. For example, the binary sequence before encoding is "010110110010", then the data encoded by PAM4 is "112302", because PAM4 encoding uses two bits in the binary sequence as a , For example, 00 corresponds to 0, 01 corresponds to 1, 10 corresponds to 2, and 11 corresponds to 3. Wherein, in the hardware circuit, the binary 0 and 1 are represented by pulse amplitude, voltage value, etc., a low pulse or low voltage represents 0, and a high pulse or high voltage represents 1. Similarly, the 0123 encoded by PAM4 also corresponds to different pulses or voltages, and different values are distinguished by the pulse or voltage.

The sending end sends the signal after the PAM4 encoding to the receiving end, and the receiving end receives the signal after the PAM4 encoding, which is the initial signal;

Optionally, in an optical network communication system, after encoding the binary sequence, the transmitting end converts the encoded signal into an optical signal, transmits it to the receiving end, and after receiving the optical signal, the receiving end converts the encoded signal into An electrical signal, which is the initial signal.

Step 102. Divide the initial signal into M signals.

Wherein, M is an integer, M=N-1, and N is the order of the pulse amplitude modulation coding adopted by the initial signal, for example, for a PAM4 signal, N is 4, and M is 3; for a PAM8 signal, N is 8, and M is 7.

Specifically, M thresholds are received, and the M thresholds include the first threshold, the second threshold...the Mth threshold;

According to the M thresholds, the initial signal is compared with the M thresholds respectively to obtain M signal outputs.

Further, according to step 101, the sending end and the receiving end have established the PAM4 encoding method during the handshake process, and the receiving end uses a 3-way comparator or a 3-bit analog-to-digital converter for the PAM4 decoding circuit of the initial signal ADC. Taking 3-way comparators as an example, the 3-way comparators pass 3 thresholds, and at this time M=3, the initial signal can be divided into 3-way signals.

That is, when the PAM4 decoding circuit is used, the initial signal can be divided into three signals through three thresholds, as shown in FIG. 2 . For example, the data sent by the sending end is 20G, and the data received by the receiving side is 10G. The implementation method may be to only select the output result of the second threshold in FIG. 2 to obtain 10G data. The reasons are as follows: the result greater than the third threshold is 11, the result less than the first threshold is 00, the result greater than the first threshold and less than the second threshold is 01, and the result greater than the second threshold and less than the third threshold is 10. When comparing the results, the resulting data can distinguish 11, 10 from 00, 01, that is, the result greater than the second threshold is 10 or 11, and the result smaller than the second threshold is 01 or 00. It can be seen that the first digit greater than the second threshold is 1, and the first digit smaller than the second threshold is 0, that is, the first digit of the two-digit data can be obtained by passing a second threshold, and each transmission The data is two bits, and getting the previous bit is equivalent to getting half of the data. That is, only the output result of the comparator 2 shown in FIG. 3 is selected, that is, the first signal shown in FIG. 4 .

Referring to Figure 3 and Figure 4, if the data sent by the sending end is 20G, and one receiving end receives 10G, the second signal shown in Figure 4 can also be selected, that is, the output result of comparator 1 in Figure 3 and the comparison The output result of comparator 2 is XORed at the first logic gate, and then the output result of comparator 3 is XORed with the output result of comparator 3 at the second logic gate.

For another example, if the data sent by the sending end is 20G, and the receiving end receives 5G data, there are multiple methods. Method 1 can obtain 10G data through the second threshold, and a D flip-flop is introduced in the subsequent logical processing part, and the clock selection is 5G clock sampling, the result is that in the 10G data, every other data is sampled one data, and half of the 10G data is obtained, that is, the 5G data. Another method has a prerequisite. In our transmission system, after the data is encoded, it is required to ensure that the distribution of 0 and 1 is even, that is, 50% each. Similarly, after converting it into PAM4, two codes are coded together, and the probability of 00, 01, 10, and 11 appearing is the same, each is 25%. As shown in FIG. 3 , if the OLT (Optical Line Terminal, Optical Line Terminal) only receives the result of the third threshold comparison, the result means that 11 is distinguished from 10, 01, and 00. As long as the OLT codes the 11 combination to represent one data, and the non-11 combination to represent another data, then the received data is equivalent to distinguishing this combination, that is, 25% of the information has been obtained. In this example, the receiving end Receive 5G data.

Step 103: Obtain a selection control signal, select one or more of the M signals according to the selection control signal, and perform logical decoding to generate a decoded signal.

Wherein, the selection control signal is sent from the sending end to the receiving end.

The selection control signal is related to the bandwidth selected by the user (regarded as the receiving end).

For example, assuming that the data transmission bandwidth of the operator (sending end) is 100M, and the user acts as the receiving end and chooses a 50M home bandwidth package at the operator (which can also be regarded as the sending end), then according to the user's 50M bandwidth setting, the sending end Encode the data required by the user into one-half of the code stream in advance. The encoding format is determined by negotiation between the sending end and the receiving end. , select your own 50M data to decode, that is, select the second threshold output result in the shunt circuit as shown in Figure 2, or perform XOR processing on the first threshold output result and the third threshold output result, and then process the The result is XORed with the second threshold output result.

The control signal may be sent through a handshake protocol message between the sending end and the receiving end, or may be carried in a physical layer operation management message (Physical Layer Operation And Management, PLOAM) message, carried in an extended field in the message or reserved field.

The signal processing method provided in this embodiment obtains the initial signal, divides the initial signal into M signals, and selects one or more of the M signals for logical decoding, so that the media access control layer only needs to process the initial signal The decoded signal of part of the signal saves bandwidth resources and reduces the power consumption of data processing in the media access control layer.

Embodiment two,

Based on the above-mentioned embodiment corresponding to FIG. 1 , an embodiment of the present invention provides a signal processing device for performing the signal processing method described in the above-mentioned embodiment corresponding to FIG. 1 , as shown in FIG. 5 , the signal processing device 501 It includes a shunt circuit 5011 and a selector 5012 .

The splitting circuit 5011 is configured to receive the initial signal, split the initial signal into M signals, and output the M signals to the selector. Wherein, the initial signal is an electrical signal encoded by N-order amplitude modulation, N is an integer greater than 2, and M=N-1.

Specifically, the branching circuit 5011 is used to obtain M thresholds, and the M thresholds include the first threshold, the second threshold...the Mth threshold;

According to the M thresholds, the initial signal is compared with the M thresholds respectively, and M signal outputs can be obtained.

The selector 5012 is configured to receive a selection control signal, and select one or more of the M signals for logic decoding according to the selection control signal.

The signal processing device 501 may further include a receiver 5013 for acquiring an initial signal, and transmitting the initial signal to the splitting circuit 5011 . The signal processing device 501 may also include a logic decoding circuit (not shown in the drawings), which is used to logically decode the signal selected by the selector 5012 to restore the original data, usually in the form of a media access control MAC chip, It can also be other decoding modules or devices.

Optionally, the selection control signal is sent to the signal processing device 501 by the optical line terminal OLT.

The selection control signal can be sent through a physical layer operation management and maintenance PLOAM message, and carried in an extended field or a reserved field of the PLOAM message.

Optionally, the branching circuit 5011 includes a comparator or a digital-to-analog converter.

Optionally, the signal processing device 501 further includes a processor, and the processor is configured to determine an encoding mode.

Further, determining the encoding mode can be completed through a handshake process between the sending end and the receiving end. Handshake, that is, the two sides of the communication use a dedicated control signal for status indication. This control signal is sent from the sender to the receiver, and from the receiver to the sender. Use the handshake protocol to process cross-clock domain data transmission, and only need to use the pulse detection method to synchronize the handshake signals (REQ (Request, request signal) and ACK (Acknowledge, response signal)) of both parties. In the specific implementation, assuming that REQ, ACK, and the data bus are all in an invalid state during initialization, the sending end first puts the data, such as the encoding method used by the two parties in the communication, into the bus, and then sends a valid REQ signal to the receiving end. The receiving end latches the data bus after detecting a valid REQ signal, and then returns a valid ACK signal to indicate that the read is complete. The sending device cancels the current REQ signal after detecting a valid ACK signal, and the receiving device cancels the ACK signal correspondingly after detecting the REQ cancellation, and a normal handshake communication is completed at this time. After that, the sender can continue to start the next handshake communication, and so on.

In this way, the two sides of the communication determine the encoding method through the handshake process.

For example, the negotiation between the two parties through the handshake process can adopt double binary (Double Binary, DB,) coding, 4th-order pulse amplitude modulation coding (Pulse Amplitude Modulation, PAM4), n-order pulse amplitude modulation coding (Pulse Amplitude Modulation, PAM n ) and other encoding formats. In addition, it is also necessary to determine which part of the coded data sent by the sender is occupied by the data at the receiver.

Take the PAM4 encoding method used by both parties as an example. For example, the binary sequence before encoding is "010110110010", then the data encoded by PAM4 is "112302", because PAM4 encoding uses two bits in the binary sequence as a , For example, 00 corresponds to 0, 01 corresponds to 1, 10 corresponds to 2, and 11 corresponds to 3. Among them, in the hardware circuit, binary 0 and 1 are represented by pulse amplitude, voltage value, etc., low pulse or low voltage represents 0, and high pulse or high voltage represents 1. In the same way, 0123 after PAM4 encoding also corresponds to different pulses or voltages, and the pulse level or voltage level is used to distinguish different values.

Optionally, the sending end sends the PAM4-encoded signal to the receiving end, and the receiving end receives the PAM4-encoded signal as the initial signal;

Optionally, in an optical network communication system, after encoding the binary sequence, the transmitting end converts the encoded signal into an optical signal and transmits it to the receiving end. After the receiving end receives the optical signal, the receiver converts the optical The signal is converted into an electrical signal, which is the original signal.

Specifically, the shunt circuit 5011 can be realized by using a comparator, and can also be realized by using an analog-to-digital converter. Taking 3-way comparators as an example, the 3-way comparators can divide the initial signal into 4-way signals through 3 thresholds.

That is, when the PAM4 decoding circuit is used, the initial signal can be divided into three signals through three thresholds, as shown in FIG. 2 . For example, the data sent by the sending end is 50G, and the data received by the receiving side is 10G. The implementation method may be to only select the output result of the second threshold in FIG. 2 to obtain 10G data. The reasons are as follows: the result greater than the third threshold is 11, the result less than the first threshold is 00, the result greater than the first threshold and less than the second threshold is 01, and the result greater than the second threshold and less than the third threshold is 10. When comparing the results, the resulting data can distinguish 11, 10 from 00, 01, that is, the result greater than the second threshold is 10 or 11, and the result smaller than the second threshold is 01 or 00. It can be seen that the first digit greater than the second threshold is 1, and the first digit smaller than the second threshold is 0, that is, the first digit of the two-digit data can be obtained by passing a second threshold, and each transmission The data is two bits, and getting the previous bit is equivalent to getting half of the data.

For another example, if the data sent by the sending end is 50G, and the receiving end receives 5G data, 10G data can be obtained through the second threshold, and a D flip-flop is introduced in the subsequent logic processing department, and the clock selection is 5G clock sampling. That is, in the 10G data, if every other data is sampled, half of the 10G data is obtained, that is, 5G data.

Specifically, selecting one or more of the M signals for logical decoding is determined according to the bandwidth package selected by the user.

For example, assuming that the data transmission bandwidth of the operator (sending end) is 100M, and the user acts as the receiving end and chooses a 50M home bandwidth package at the operator (which can also be regarded as the sending end), then according to the user's 50M bandwidth setting, the sending end Encode the data required by the user into one-half of the code stream in advance. The encoding format is determined by negotiation between the sending end and the receiving end. , select your own 50M data to decode, that is, select the second threshold output result in the shunt circuit shown in Figure 2. It is also possible to encode the 50M data into another signal, perform XOR processing on the first threshold output result and the third threshold output result, and then perform XOR processing on the XOR processing result and the second threshold output result.

Optionally, the receiver 5013 can be a ROSA, and the shunt circuit 5011 can be a comparator, or an analog-to-digital converter or a digital-to-analog converter. For example, for PAM4 encoding, there can be 3 comparators, or 3 -bit analog-to-digital converter ADC. The logic decoding circuit can be an XOR gate circuit or other hardware circuits, and the processor can use a field-programmable gate array (Field-Programmable Gate Array, FPGA), a dedicated chip (Application Specific Integrated Circuit, ASIC), or a central processing Central Processor Unit (CPU), digital signal processing circuit (Digital Signal Processor, DSP), microcontroller (Micro Controller Unit, MCU), programmable controller (Programmable Logic Device, PLD) or other integrated chips.

In the signal processing device provided in this embodiment, the initial signal is acquired by the receiver, the splitting circuit divides the initial signal into M signals, and the selector selects one or more of the M signals for logical decoding, so that the media access control The layer only needs to process the decoded signal of part of the original signal, which saves bandwidth resources and reduces the power consumption of data processing in the media access control layer.

An embodiment of the present invention provides a signal processing device, which may be a module or a component in an optical line terminal (OLT). The signal processing device may include a processor, configured to determine the coding mode corresponding to the first network node according to the determined N-order amplitude modulation coding format, the set bandwidth of the first network node, and the bandwidth of the signal processing device; The N-order amplitude modulation coding format may be determined through negotiation with the receiving end, or it may be set by the signal processing device when it leaves the factory, it may also be set manually, or it may be configured remotely. The encoding method corresponding to the first network node includes the encoding format and which signal or signals of the first network node are encoded into. For example, as mentioned in the previous example, for the signal processing device as the sending end, its data transmission The bandwidth is 100M, and the user, as the receiving end, chooses a 50M home bandwidth package at the operator (also regarded as the sending end), then according to the user's 50M bandwidth setting, the (sending end) signal processing device encodes the data required by the user For one-half of the code stream, the encoding format is negotiated between the sending end and the receiving end, such as PAM4. This determines the encoding format. According to the determined encoding format, the sending end generates a selection control signal. The selection control signal informs the receiving end which signal or signals its data is carried in, and the receiving end can decode the signal or signals correctly. Recover your own data. That is, the receiving end can recover the data correctly without decoding all the received signals. Specifically, take a PAM4 system as an example, assuming that an OLT is connected to 4 ONUs (Optical Network Unit, Optical Network Unit), the OLT bandwidth is 50G, ONU1 receives 50G signals, ONU2 receives 10G signals, ONU3 receives the other half of 10G signals, ONU4 Receive 5G signal. Then ONU1 selects the results of the three thresholds and performs logical processing and full decoding. ONU2 can directly select the result of a single intermediate threshold, which is the 10G signal. ONU3 receives the other half of the 10G signal. It needs to select the results of three thresholds and perform logical processing. For detailed processing of ONU2, ONU3 and ONU4, refer to the foregoing embodiments.

The signal processing device (sending end) further includes an encoder and a transmitter, wherein the encoder is used to perform N-order amplitude modulation encoding on the data sent to the sending end using the determined encoding method. Continuing the example in the previous paragraph, the OLT code can be like this, where an or bn is 0 or 1 data. Specifically, the encoded data of Onu1 is: a2, a3, a4, b3, b2, c3, b4, d3, c2, e3, c4, f3, d2, g3, d4, h3; the data of ONU2 is: a2, a4 , b2, b4, c2, c4, d2, d4; Onu3 data: a3, b3, c3, d3, e3, f3, g3, h3; Onu4 data: a4, b4, c4, d4.

The transmitter is also used to send the generated selection control signal and encoded data. The signal processing device (sending end) may also include an electro-optical converter, which converts the coded data and selection control signals into optical signals and sends them out through the transmitter. Since the OLT and ONU/ONT form a PON network, in the downlink direction, the OLT acts as the sending end, and the ONT/ONU acts as the receiving end. Therefore, the selection control signal can be carried in the PLOAM message transmitted between the two, or can be sent through the handshake protocol message between the sender and the receiver, or can be encoded with the data signal and then sent.

The signal processing device provided in this embodiment encodes the data at the receiving end into a part of the encoded signal at the sending end, and sends a selection control signal to instruct the receiving end to decode the part of the signal containing the data at the receiving end, so that the receiving end only decodes part of the signal That is, correct decoding can be realized, bandwidth resources are saved, and power consumption of data processing at the media access control layer is reduced; requirements for bandwidth processing capabilities of receiving end devices are also reduced, costs can be reduced, and system performance-price ratio can be improved.

Embodiment three,

An embodiment of the present invention provides a communication system. Referring to FIG. 6 , the communication system 601 includes a sending device 6011 and a receiving device 6012 .

Wherein, the sending device 6011 may be an optical line terminal (Optical Line Terminal, OLT), or an optical network unit (Optical Network Unit, ONU) or an optical network terminal (Optical Network Terminal, ONT), or an The sending end of the network, such as base station, user terminal, communication node, etc.;

Correspondingly, the receiving device 6012 may be an Optical Network Unit (ONU), an Optical Network Terminal (ONT), an Optical Line Terminal (OLT), or an Receivers, such as user terminal equipment, base stations, communication nodes, etc.

The sending device 6011 is configured to send the initial optical signal to the receiving device 6012, wherein, the initial optical signal is an optical signal after N-order amplitude modulation encoding, and N is an integer greater than 2; according to the relationship between the bandwidth of the receiving device and the bandwidth of the sending device, Generate a selection control signal, send the selection control signal to the receiving device; determine the encoding format, encode and send the data to be sent to the receiving device according to the encoding format;

The receiving device 6012 may be the signal processing device described in the embodiment corresponding to FIG. 5 .

In the communication system provided in this embodiment, by obtaining the initial signal, the initial signal is divided into M signals, and one or more of the M signals are selected for logical decoding, so that the medium access control layer only needs to process the initial signal The decoded signal of some signals saves bandwidth resources and reduces the power consumption of data processing in the media access control layer.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (11)

1. A kind of 1. signal processing apparatus, it is characterised in that including：

   Shunt circuit, for the initial signal of acquisition to be separated into N-1 roads signal by amplitude, wherein, the initial signal be through The electric signal of N ranks amplitude modulation(PAM) coding is crossed, N is the integer more than 2；

   Selector, for the selection control signal according to acquisition, selected from the signal of the N-1 roads；And the letter that will be selected Number it is sent to decoder and carries out logic decoding；

   The selection control signal is from the optical line terminal OLT being coupled with the signal processing apparatus.
2. 2. device according to claim 1, it is characterised in that the selection control signal by physical layer operations management and Safeguard PLOAM messagings.
3. 3. device according to claim 1, it is characterised in that the shunt circuit is comparator or digital analog converter.
4. 4. according to the device described in claims 1 to 3 any one, it is characterised in that the shunt circuit implement body is used for：Root According to the selection control signal of acquisition, signal all the way is selected from the signal of M roads, and the road signal selected is sent to decoder and entered Row logic decodes.
5. 5. according to the device described in claims 1 to 3 any one, it is characterised in that the selector is specifically used for：According to obtaining The selection control signal obtained, at least two paths of signals is selected from the signal of M roads, and the selected at least two paths of signals is carried out at logic Reason；And the signal after logical process is sent to decoder and carries out logic decoding.
6. 6. device according to claim 5, it is characterised in that the logical process is XOR processing.
7. 7. according to the device described in claims 1 to 3,6 any one, it is characterised in that described device is ONT Optical Network Terminal ONT A component or optical network unit ONU a component.
8. A kind of 8. signal processing apparatus, it is characterised in that including：

   Processor, for N rank amplitude modulation(PAM)s coded format, the setting bandwidth of first network node and the letter according to determination The bandwidth of number processing unit, determines coded system corresponding to the first network node；And given birth to according to the coded system of determination Into the selection control signal of the first network node, to indicate the first network node from amplitude separation Hou N-1 roads letter Selected in number which or which be correctly decoded；

   Encoder, the data for being sent to the first network node are subjected to N rank amplitudes for the coded system using the determination Modulating-coding；

   Transmitter, for the data after sending the selection control signal of the generation and encoding.
9. 9. device according to claim 8, it is characterised in that the first network node is the one of ONT Optical Network Terminal ONT One component of individual component or optical network unit ONU.
10. 10. device as claimed in claim 8 or 9, it is characterised in that described device is a component of optical line terminal OLT.
11. 11. according to the device described in claim 8-9 any one, it is characterised in that

    The selection control signal by physical layer operations management and safeguards PLOAM messagings.