CN105103446A - Signal processing device - Google Patents
Signal processing device Download PDFInfo
- Publication number
- CN105103446A CN105103446A CN201480000269.8A CN201480000269A CN105103446A CN 105103446 A CN105103446 A CN 105103446A CN 201480000269 A CN201480000269 A CN 201480000269A CN 105103446 A CN105103446 A CN 105103446A
- Authority
- CN
- China
- Prior art keywords
- signal
- selection control
- control signal
- data
- roads
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
- H03K9/02—Demodulating pulses which have been modulated with a continuously-variable signal of amplitude-modulated pulses
Abstract
The present invention relates to the field of communications. Disclosed is a signal processing device capable of solving the problem of high power consumption when a media access control (MAC) layer processes data in a multistage amplitude modulated communication system. The specific solution is: acquiring initial signals; dividing the initial signals into N-1 signal paths; acquiring a selection control signal; and according to the selection control signal, selecting one or more of M signal paths for logic decoding, so that the MAC layer only needs to process the decoding signals of some of the initial signals, thus saving bandwidth resources, and reducing power consumption during data processing of the MAC layer.
Description
A kind of signal processing apparatus
Technical field
The present invention relates to the communications field, more particularly to a kind of signal processing apparatus.
Background technology
With the development of communication network, in order that the network bandwidth disclosure satisfy that the demand of Most users, for handling mostly by the way of multistage or high order modulation coding, to increase the speed of data transfer for signal.
All data can be decoded and received by the communication system encoded typically for multistage amplitude modulation(PAM), receiving terminal, and this requires MAC (the Media Access Control, medium access control of receiving terminal）Layer needs to support higher transmission rate, but the higher transmission rate of not each user's demand, therefore, existing technical scheme cause the waste of bandwidth resources, and make it that the power consumption of the media access control layer processing data of receiving terminal is too high.
The content of the invention
Embodiments of the invention provide a kind of signal processing apparatus, can solve the problem that the problem of media access control layer processing data power consumption is too high in the communication system of multistage amplitude modulation(PAM).
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
In a first aspect, a kind of signal processing apparatus, including：
Receiver, for obtaining initial signal, the initial signal is transmitted to shunt circuit, wherein, the initial signal is the electric signal encoded by N ranks amplitude modulation(PAM), and N is the integer more than 2；The shunt circuit, for receiving the initial signal, M roads signal is separated into by the initial signal by amplitude, wherein, M=N-1, and by M roads signal output to processor；
The selector, for the selection control signal according to acquisition, in selection M roads signal one or more and be sent to decoder and carry out logic decoding.
With reference in a first aspect, in the first possible implementation, the selection control signal is to be sent by optical line terminal OLT to the signal processing apparatus.
With reference to the first possible implementation of first aspect or first aspect, in second of possible implementation, the selection control signal can be managed and be safeguarded that PLOAM message is sent by physical layer operations.
With reference to first aspect to first aspect second of possible implementation in any realization side
Formula, in the third possible implementation, the shunt circuit includes comparator or digital analog converter.
With reference to first aspect to first aspect the third possible implementation in any implementation, in the 4th kind of possible implementation, the multichannel unit, specifically for：M threshold value is obtained, the M threshold value includes the 1st threshold value, the 2nd threshold value ... M threshold values；
According to the M threshold value, the initial signal is compared with M threshold value respectively, M roads signal output can be obtained.
With reference to first aspect to first aspect the 4th kind of possible implementation in any implementation, in the 5th kind of possible implementation, the control signal that the bandwidth set meal that the control signal is optical line terminal OLT to be selected according to user is generated, for select in the signal of the M roads all the way or several signals.
Second aspect, a kind of signal processing apparatus, including：
Processor, for the bandwidth of the N rank amplitude modulation(PAM)s coded format according to determination, the setting bandwidth of first network node and the signal processing apparatus, determines the corresponding coded system of the-network node；And generate the selection control signal of the first network node according to the coded system of determination, with indicate the first network node selected from the signal of amplitude separation Hou N-1 roads which or which be correctly decoded；
The data for being sent to the first network node are carried out N ranks amplitude modulation(PAM) for the coded system using the determination and encoded by encoder；
Transmitter, for sending the data after the selection control signal and coding of the generation.
With reference to second aspect, in the first possible implementation,
The first network node is an ONT Optical Network Terminal ONT component or a component of optical network unit ONU.
With reference to the first possible implementation of second aspect or second aspect, in second of possible implementation,
Described device is a component of optical line terminal OLT.
With reference to any one possible implementation of second aspect or second aspect, in the third possible implementation,
The selection control signal is managed and safeguarded PLOAM messagings by physical layer operations.
The third aspect, a kind of signal processing method, including：
Initial signal is obtained, the initial signal is the electric signal after N ranks amplitude modulation(PAM) coding, and N is the integer more than 2；
The initial signal is separated into M roads signal by amplitude, wherein, M is the integer more than 2；Control signal is obtained, according to the control signal, one or more in selection M roads signal carries out logic decoding.
With reference to the third aspect, in the first possible implementation of the third aspect, the selection control signal is sent by optical line terminal OLT.
With reference to the first possible implementation in the third aspect and the second face, in the first possible implementation of the third aspect, the selection control signal can be managed and be safeguarded that PLOAM message is sent by physical layer operations.
It is described that the initial signal is separated into M roads signal by amplitude in the third possible implementation of the third aspect with reference to the third aspect, including：
M threshold value is obtained, the M threshold value includes the 1st threshold value, the 2nd threshold value M threshold values；
According to the M threshold value, the initial signal is compared with M threshold value respectively, M roads signal output can be obtained.
With reference to the third aspect, in the 4th kind of possible implementation of the third aspect, the control signal that the bandwidth set meal that the control signal is optical line terminal OLT to be selected according to user is generated, for select in the signal of the M roads all the way or several signals.
A kind of fourth aspect, optical network communication system, the network system includes dispensing device and reception device, including：
The dispensing device, for sending initial optical signal to the reception device, wherein, optical signal of the initial optical signal after N ranks amplitude modulation(PAM) coding, N is the integer more than 2；According to the bandwidth of the reception device and the relation of the dispensing device bandwidth, generation selection control signal sends the selection control signal to the reception device；Coded format is determined, the data for being sent to the reception device are encoded and sent according to the coded format；
The reception device is first aspect or the signal processing apparatus described in first aspect any one possible implementation；
Or, the reception device is second aspect or the signal processing apparatus described in second aspect any one possible implementation.
The signal processing apparatus that embodiments of the invention are provided, by obtaining initial signal, initial signal is divided into M roads signal, obtain control signal, according to the control signal, one or more in selection M roads signal carries out logic decoding so that media access control layer only needs to handle the decoded signal of the part signal in initial signal, bandwidth resources are saved, the power consumption of media access control layer data processing is reduced.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in being described below to embodiment is briefly described, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
A kind of signal processing method schematic flow sheet that Fig. 1 provides for embodiments of the invention；The PAM4 shunt circuit structural representations that Fig. 2 provides for embodiments of the invention；
The receiving device structural representation for the coded formats of P A M 4 that Fig. 3 provides for embodiments of the invention；
The receiving terminal INSHIN and selection course schematic diagram for the PAM4 coded formats that Fig. 4 provides for embodiments of the invention；
A kind of signal processing apparatus structural representation that Fig. 5 provides for embodiments of the invention；A kind of network architecture schematic diagram that Fig. 6 provides for embodiments of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
Embodiment one,
Embodiments of the invention are provided in a kind of signal processing method, the communication system applied to multistage amplitude modulation(PAM), shown in reference picture 1, are comprised the following steps：
Step 101, acquisition initial signal.
Wherein, initial signal is the electric signal after N ranks amplitude modulation(PAM) coding, and N is the integer more than 2.
Optionally, before step 101 obtains initial signal, methods described also includes：
Determine coded system.
Further, it is described to determine that coded system be completed by the handshake procedure between transmitting terminal and receiving terminal.Described to shake hands, i.e., communicating pair has used dedicated control signal to carry out state instruction.The existing transmitting terminal of this control signal also has receiving terminal to transmitting terminal to receiving terminal.Clock-domain crossing data is handled using Handshake Protocol mode to transmit, it is only necessary to the handshake of both sides（REQ (Request, request signal）With ACK (Acknowledge, answer signal））Synchronized respectively using pulse detecting method.In the specific implementation, assuming REQ, ACK, data/address bus is in initialization all in disarmed state, and transmitting terminal is first data, such as the coded system that intercommunication is used is put into bus, then sends effective REQ signal to receiving terminal.Receiving terminal latch data bus after effective REQ signal is detected, then the effective ack signal of loopback one, which represents to read, completes response.Send equipment and cancel current REQ signal after effective ack signal is detected, receiving device also respective pins ack signal after REQ t pins are detected now completes a subnormal handshake communication.Hereafter, transmitting terminal can continue to start handshake communication next time, so circulation.
In this way, communicating pair passes through handshake procedure, it is determined that coded system.
Such as communicating pair can use duobinary system by the negotiation of handshake procedure（Double Binary, DB) coded system, 4 rank pulse amplitude modulations coding（Pulse Amplitude
Modulation, PAM4), N ranks pulse amplitude modulation coding（Pulse Amplitude Modulation, PAMN) etc. coded system.Wherein N is the integer more than 2.
Illustrated so that both sides use PAM4 coded systems as an example, such as uncoded preceding binary sequence is " 0,101 10110010 ", the data after PAM4 codings are so used for " 1 12302 ", because PAM4 codings are to regard two bits in binary sequence as one, such as 00 correspondence 0, the correspondence 3 of 01 correspondence, 1,10 correspondence 2,11.Wherein, in hardware circuit, the Binary Zero, 1 are represented by impulse amplitude, magnitude of voltage etc., and low pulse or low-voltage represent 0, and high impulse or high voltage represent 1.Similarly, 0123 after PAM4 coding also corresponds to different pulse or voltage respectively, and different values are distinguished using the height of pulse or the height of voltage.
Transmitting terminal sends the signal after the PAM4 codings to receiving terminal, and receiving terminal receives the signal after the PAM4 codings, is the initial signal；
Alternatively, in a kind of optical network communication system, the transmitting terminal to binary sequence after encoding, the encoded signal is converted into optical signal, receiving terminal is transmitted into, receiving terminal is received after the optical signal, electric signal is converted to, the electric signal is the initial signal.
Step 102, the initial signal is divided into M roads signal.
Wherein, M is integer, and M=N-1, N is the exponent number for the pulse amplitude modulation coding that initial signal is used, such as to PAM4 signals, then N is that 4, M is 3;Then N is that 8, M is to PAM8 signals
7。
Specifically, receiving M threshold value, the M threshold value includes the 1st threshold value, the 2nd threshold value M threshold values；
According to the M threshold value, the initial signal is compared with M threshold value respectively, M roads signal output can be obtained.
Further, according in step 101, the coded system that transmitting terminal and receiving terminal establish PAM4 during shaking hands is learnt, receiving terminal is to the PAM4 decoding circuits of initial signal, using the analog-digital converter ADC of 3 road comparators, or a 3bit.So that using exemplified by 3 road comparators, 3 road comparator is by 3 threshold values, and now the initial signal, can be divided into 3 road signals by M=3.
When i.e., using PAM4 decoding circuits, initial signal can be divided into 3 road signals by 3 threshold values, as shown in Figure 2.The data of such as transmitting terminal transmission are 20G, and the data that receiving side is received are 10G, and implementation can be the output result for only selecting the Second Threshold in Fig. 2, it is possible to obtain 10G data.Reason is as follows：Result more than the 3rd threshold value is 11, result less than first threshold is 00, it is 01 to be less than Second Threshold more than first threshold, the result for being less than the 3rd threshold value more than Second Threshold is 10, when the comparative result using Second Threshold, data out can be distinguished 11,10 with 00,01, that is to say, that, result more than Second Threshold is 10 or 11, and the result less than Second Threshold is 01 or 00.It can be seen that the first digit more than Second Threshold is 1, the first digit less than Second Threshold is 0, namely the previous position of two bits can just show that the data transmitted every time are two by a Second Threshold, obtain previous position equivalent to the half for obtaining data.Only select the output result of comparator 2 shown in accompanying drawing 3, i.e., the first signal shown in Fig. 4.
Shown in reference picture 3 and Fig. 4, if the data that transmitting terminal is sent are 20G ,-individual receive termination
Receive 10G, second of signal shown in Fig. 4 can also be selected, that is the output result of the output result of comparator 1 and comparator 2 carries out XOR in the first gate in Fig. 3, then carries out XOR in the second gate with the output result of comparator 3 again with the result of the XOR.
For another example, if the data that transmitting terminal is sent are 20G, receiving terminal receives 5G data, has multiple ways, way one can obtain 10G data by Second Threshold, logical process part below introduces a d type flip flop, clock selecting is 5G clock samplings, during such result is exactly 10G data, every one data of a data sampling, also the half of 10G data, i.e. 5G data have just been obtained.Another way, it has in a precondition, our Transmission systems, after data are encoded, it is desirable to the distribution for ensureing 0 and 1 be it is average, that is, each 50%.Equally, it is become after PAM4, two two encode together, 00,01,10,11 probability occurred is also the same, and each is 25%.As shown in Figure 3, if OLT (Optical Line Terminal, optical line terminal) is to receive the 3rd threshold value to compare the result come, its result is represented and distinguished 11, and 10,01,00.As long as 11 combinations are represented into a data when OLT is encoded, non- 11 combinations are represented into another data, the data for so receiving out are equivalent to have distinguished this combination, that is, 25% acquisition of information, i.e. receiving terminal receives 5G data in this example.
Step 103, acquisition selection control signal, one or more in the selection control signal selection M roads signal carry out logic decoding, generation decoded signal.
Wherein, selection control signal is to be sent to receiving terminal by transmitting terminal.
The selection control signal, with user（It is considered as receiving terminal）The bandwidth of selection is related.
Such as, it is assumed that operator（Transmitting terminal）The a width of 100M of output transmission, user is as receiving terminal, in operator（Also it can be considered transmitting terminal）Select 50M family's bandwidth set meal, so set according to the 50M of user bandwidth, the data encoding that transmitting terminal in advance needs user is into 1/2nd code stream, coded format is consulted to determine by transmitting terminal and receiving terminal, such as encoded using PAM4, in the 100M data that receiving terminal is transmitted from circuit, according to the selection control signal of transmitting terminal, the 50M data of oneself are selected to be decoded, select the Second Threshold output result in shunt circuit as shown in Figure 2, or XOR processing is carried out to first threshold output result and the 3rd threshold value output result, the result and Second Threshold output result are subjected to XOR processing again.
Described control signal can be sent by the Handshake Protocol message of transmitting terminal and receiving terminal, can also be managed by physical layer operations message (Physical Layer Operation And Management,
PLOAM) message packet is carried, and is carried in extended field or reserved field in messages.
The signal processing method that the present embodiment is provided, by obtaining initial signal, initial signal is divided into
M roads signal, select one or more progress logic decoding in the signal of the M roads, so that media access control layer only needs to handle the decoded signal of the part signal in initial signal, bandwidth resources are saved, the power consumption of media access control layer data processing is reduced.
Embodiment two,
Based on the corresponding embodiments of above-mentioned Fig. 1, embodiments of the invention provide a kind of signal processing apparatus, for performing the signal processing method described in the corresponding embodiments of above-mentioned Fig. 1, shown in reference picture 5, the signal processing apparatus 501 includes shunt circuit 5011, selector 5012.
Shunt circuit 501 1, for receiving initial signal, M roads signal is separated into by initial signal, and by M roads signal output to selector.Wherein, initial signal is the electric signal after N ranks amplitude modulation(PAM) coding, and N is the integer more than 2, M=N-1.
Specifically, shunt circuit 5011, for obtaining M threshold value, M threshold value includes the 1st threshold value, the 2nd threshold value M threshold values；
According to M threshold value, initial signal is compared with M threshold value respectively, M roads signal output can be obtained.
Selector 5012, for receiving selection control signal, according to selection control signal, one or more in the signal of selection M roads carries out logic decoding.
The signal processing apparatus 501 can also include receiver 5013, and for obtaining initial signal, initial signal is transmitted to shunt circuit 5011.The signal processing apparatus 501 can also include logic decoding circuit（Not shown in accompanying drawing), the signal for being selected to selector 5012 carries out logic and decoded to recover initial data, occurs or other decoder modules or device generally in the form of media access control MAC chip.
Alternatively, selection control signal is sent to signal processing apparatus 501 by optical line terminal OLT.Selection control signal can be managed and be safeguarded that PLOAM message is sent by physical layer operations, be carried in the extended field or reserved field of PLOAM message.
Optionally, shunt circuit 5011 includes comparator or digital analog converter.
Alternatively, signal processing apparatus 501 also includes processor, and processor is used to determine coded system.Further, it is determined that coded system can be complete by the handshake procedure between transmitting terminal and receiving terminal
Into.Shake hands, i.e., communicating pair has used dedicated control signal to carry out state instruction.The existing transmitting terminal of this control signal also has receiving terminal to transmitting terminal to receiving terminal.Clock-domain crossing data is handled using Handshake Protocol mode to transmit, it is only necessary to the handshake of both sides（REQ (Request, request signal）With ACK (Acknowledge, answer signal））Synchronized respectively using pulse detecting method.In the specific implementation, assuming REQ, ACK, data/address bus is in initialization all in disarmed state, and transmitting terminal is first data, such as the coded system that intercommunication is used is put into bus, then sends effective REQ signal to receiving terminal.Receiving terminal latch data bus after effective REQ signal is detected, then the effective ack signal of loopback one, which represents to read, completes response.Send equipment and cancel current REQ signal after effective ack signal is detected, receiving device also respective pins ack signal after REQ revocations are detected now completes a subnormal handshake communication.Hereafter, transmitting terminal can continue to start handshake communication next time, so circulation.
In this way, communicating pair passes through handshake procedure, it is determined that coded system.
Such as communicating pair can use duobinary system by the negotiation of handshake procedure（Double Binary, DB) coded system, 4 rank pulse amplitude modulations coding（Pulse Amplitude Modulation, PAM4), n ranks pulse amplitude modulation coding（Pulse Amplitude Modulation, PAM n) etc. coded format.In addition, in addition it is also necessary to it is determined that receiving which part that end data takes the coded data that transmitting terminal is sent.
Illustrated so that both sides use PAM4 coded systems as an example, such as uncoded preceding binary sequence is " 0,101 10110010 ", the data after PAM4 codings are so used for " 1 12302 ", because PAM4 codings are to regard two bits in binary sequence as one, such as 00 correspondence 0, the correspondence 3 of 01 correspondence, 1,10 correspondence 2,11.Wherein, in hardware circuit, Binary Zero, 1 are represented by impulse amplitude, magnitude of voltage etc., and low pulse or low-voltage represent 0, and high impulse or high voltage represent 1.Similarly, 0123 after PAM4 codings also corresponds to different pulse or voltage respectively, and different values are distinguished using the height of pulse or the height of voltage.
Alternatively, transmitting terminal sends the signal after PAM4 codings to receiving terminal, and receiving terminal receives the signal after PAM4 codings, is initial signal；
Alternatively, in a kind of optical network communication system, transmitting terminal to binary sequence after encoding, the encoded signal is converted into optical signal, receiving terminal is transmitted into, receiving terminal is received after the optical signal, receiver converts optical signals to electric signal, and the electric signal is initial signal.
Specifically, shunt circuit 501 1 can be realized using comparator, it can also be realized using analog-digital converter.So that using exemplified by 3 road comparators, initial signal can be divided into 4 road signals by 3 road comparators by 3 threshold values.
When i.e., using PAM4 decoding circuits, initial signal can be divided into 3 road signals by 3 threshold values, as shown in Figure 2.The data of such as transmitting terminal transmission are 50G, and the data that receiving side is received are 10G, and implementation can be the output result for only selecting the Second Threshold in Fig. 2, it is possible to obtain 10G data.Reason is as follows：Result more than the 3rd threshold value is 11, result less than first threshold is 00, it is 01 to be less than Second Threshold more than first threshold, the result for being less than the 3rd threshold value more than Second Threshold is 10, when the comparative result using Second Threshold, data out can be distinguished 11,10 with 00,01, that is to say, that, result more than Second Threshold is 10 or 11, and the result less than Second Threshold is 01 or 00.It can be seen that the first digit more than Second Threshold is 1, the first digit less than Second Threshold is 0, namely the previous position of two bits can just show that the data transmitted every time are two by a Second Threshold, obtain previous position equivalent to the half for obtaining data.
For another example, if the data that transmitting terminal is sent are 50G, receiving terminal receives 5G data, 10G data can be obtained by Second Threshold, logical process department below introduces a d type flip flop, and clock selecting is 5G clock samplings, during such result is exactly 10G data, every one data of a data sampling, the half of 10G data, i.e. 5G data have also just been obtained.
Specifically, one or more in the signal of selection M roads carries out logic decoding, it is the bandwidth set meal that is selected according to user to determine.
Such as, it is assumed that operator（Transmitting terminal）The a width of 100M of output transmission, user is as receiving terminal, in operator（Also it can be considered transmitting terminal）Select 50M family's bandwidth set meal, so set according to the 50M of user bandwidth, the data encoding that transmitting terminal in advance needs user is into 1/2nd code stream, coded format is consulted to determine by transmitting terminal and receiving terminal, such as encoded using PAM4, in the 100M data that receiving terminal is transmitted from circuit, according to the selection control signal of transmitting terminal, select the 50M data of oneself to be decoded, that is, select the Second Threshold output result in shunt circuit as shown in Figure 2.This 50M data encoding can also be entered to another road signal, XOR processing is carried out by carrying out XOR processing to first threshold output result and the 3rd threshold value output result, then to the XOR result and Second Threshold output result.
Alternatively, receiver 5013 can be ROSA, and shunt circuit 501 1 can be comparator,
Analog-digital converter or digital analog converter are can also be, such as PAM4 codings, comparator can be 3, or 3-bit analog-digital converters ADC.Logic decoding circuit can be NOR gate circuit or other hardware circuits, and processor can use field programmable gate array（Field-Programmable Gate Array, FPGA), special chip can be used（Application Specific Integrated Circuit, ASIC), central processing unit can also be used（Central Processor Unit, CPU), digital signal processing circuit can also be used（Digital Signal Processor, DSP), microcontroller can also be used（Micro Controller Unit, MCU), programmable controller (Programmable Logic Device, PLD) or other integrated chips can also be used.
The signal processing apparatus that the present embodiment is provided, initial signal is obtained by receiver, initial signal is divided into M roads signal by shunt circuit, one or more in selector selection M roads signal carries out logic decoding, so that media access control layer only needs to handle the decoded signal of the part signal in initial signal, bandwidth resources are saved, the power consumption of media access control layer data processing is reduced.
The embodiment of the present invention provides a kind of signal processing apparatus, can be a module or a part in optical line terminal OLT.The signal processing apparatus can include processor, for the bandwidth of the N rank amplitude modulation(PAM)s coded format according to determination, the setting bandwidth of first network node and the signal processing apparatus, determine the corresponding coded system of the first network node；The N rank amplitude modulation(PAM) coded formats are just set when can be and be dispatched from the factory with receiving terminal negotiation determination or the signal processing apparatus or setting by hand, can also pass through Remote configuration.The data that the corresponding coded system of first network node includes coded format and the first network node are coded into which or which several signals, for example in previous examples refer to, transmitting terminal is used as to signal processing apparatus, the a width of 100M of its output transmission, user is as receiving terminal, in operator（Also it can be considered transmitting terminal）Select 50M family's bandwidth set meal, then set according to the 50M of user bandwidth,（Transmitting terminal）The data encoding that signal processing apparatus needs user is into 1/2nd code stream, and coded format is consulted to determine by transmitting terminal and receiving terminal, such as PAM4.Coded format is thus determined.According to the coded format of determination, transmitting terminal generation selection control signal, the selection control signal is to inform that its data of receiving terminal are carried in which or which several signals, and receiving terminal just can correctly recover the data of itself by the decoding to the road or several signals.I.e. receiving terminal just can correctly recover data without being decoded to the whole signals received.Specifically, by taking PAM4 system as an example, it is assumed that 4 ONU of an OLT connection (Optical Network Unit, optical network unit）, OLT connects with a width of 50G, ONU1
50G signals are received, ONU2 receives 10G signals, and ONU3 receives other half 10G signals, and ONU4 receives 5G signals.Then ONU1 selects the result of three threshold values and makees logical process, full decoder.ONU2 can directly select the result of single intermediate threshold, be 10G signals, and ONU3 receives other half 10G signals, it is necessary to select the result of three threshold values and make logical process, ONU2, and ONU3 and ONU4 detailed processing are referring to previous embodiment.
The signal processing apparatus（Transmitting terminal）Also include encoder and transmitter, wherein encoder is used to the data for being sent to transmitting terminal are carried out into N ranks amplitude modulation(PAM) coding using the coded system of the determination.Continue the example of the preceding paragraph, OLT codings can be such, wherein an or the data that bn is 0 or 1.Specifically, the coded data to Onul is： a2, a3 , a4 , b3 , b2, c3 , b4, d3 , c2, e3 , c4, f3 , d2, g3 , d4 , h3 ;ONU2 data are： a2 , a4 , b2 , b4, c2, c4, d2, d4;Onu3 data： a3 , b3 , c3 , d3 , e3 , f3 , g3 , h3 ;Onu4 data： a4, b4, c4, d4.
Transmitter, is additionally operable to send the data after the selection control signal of the generation and coding.The signal processing apparatus（Transmitting terminal）In can also include electrical to optical converter, by the data after coding and selection control signal be converted into optical signal, sent by transmitter.Because OLT and ONU/ONT constitutes PON, in the downstream direction, OLT is used as receiving terminal as transmitting terminal, ONT/ONU.Therefore selection control signal can be carried in the PLOAM message transmitted therebetween, can also be sent by the Handshake Protocol message of transmitting terminal and receiving terminal, or and is sent after being encoded together with data-signal.
The signal processing apparatus that the present embodiment is provided, by the way that the data encoding of receiving terminal is entered in a part for transmitting terminal encoded signal, send selection control signal and indicate that receiving terminal is decoded to this comprising the part signal for receiving end data, realize that receiving terminal only decoded portion signal can be realized to be correctly decoded, bandwidth resources are saved, the power consumption of media access control layer data processing is reduced；The bandwidth processing Capability Requirement to receiving device is also reduced, cost can be reduced, cost performance is improved.
Embodiment three,
Embodiments of the invention provide a kind of communication system, shown in reference picture 6, and the communication system 601 includes dispensing device 6011 and reception device 6012.
Wherein, dispensing device 6011 can be optical line terminal（Optical Line Terminal, OLT), can also be optical network unit（Optical Network Unit, ONU) or ONT Optical Network Terminal（ Optical
Network Terminal, ONT), it can also be the transmitting terminal in other communication systems, such as base station, user terminal, communication node；
Correspondingly, reception device 6012 can be optical network unit Optical Network Unit, ONU) or ONT Optical Network Terminal（Optical Network Terminal, ONT), can also be optical line terminal（Optical Line Terminal, OLT), it can also be the receiving terminal in other communication systems, such as subscriber terminal equipment, base station, communication node.
Dispensing device 601 1, for sending initial optical signal to reception device 6012, wherein, optical signal of the initial optical signal after N ranks amplitude modulation(PAM) coding, N is the integer more than 2；According to the bandwidth of reception device and the relation of dispensing device bandwidth, generation selection control signal sends selection control signal to reception device；Coded format is determined, the data for being sent to reception device are encoded and sent according to coded format；
Reception device 6012 can be the signal processing apparatus described in the corresponding embodiments of Fig. 5.The communication system that the present embodiment is provided, by obtaining initial signal, initial signal is divided into M roads signal, select one or more progress logic decoding in the signal of the M roads, so that media access control layer only needs to handle the decoded signal of the part signal in initial signal, bandwidth resources are saved, the power consumption of media access control layer data processing is reduced.
It is described above; only embodiment of the invention, but protection scope of the present invention is not limited thereto, any one skilled in the art the invention discloses technical scope in; change or replacement can be readily occurred in, should be all included within the scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (12)
- Claims1st, a kind of 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 is the electric signal encoded by N ranks amplitude modulation(PAM), and N is the integer more than 2；Selector, for the selection control signal according to acquisition, is selected from the signal of the N-1 roads；And the signal selected is sent to decoder progress logic decoding.2nd, device according to claim 1, it is characterised in that the selection control signal is from the optical line terminal OLT being coupled with the signal processing apparatus.3rd, device according to claim 2, it is characterised in that the selection control signal is managed and safeguarded PLO AM messagings by physical layer operations.4th, device according to claim 1, it is characterised in that the shunt circuit is comparator or digital analog converter.5th, the device according to any one of claim 14, it is characterised in that the shunt circuit implement body is used for：According to the selection control signal of acquisition, signal all the way is selected from the signal of the M roads, and the road signal selected is sent to decoder progress logic decoding.6th, the device according to any one of claim 14, it is characterised in that the selector specifically for：According to the selection control signal of acquisition, at least two paths of signals is selected from the signal of the M roads, logical process is carried out to the selected at least two paths of signals；And the signal after logical process is sent to decoder progress logic decoding.7th, device according to claim 6, it is characterised in that the logical process is XOR processing.8th, the device according to any one of claim 16, it is characterised in that described device is an ONT Optical Network Terminal ONT component or a component of optical network unit ONU.9th, a kind of signal processing apparatus, it is characterised in that including：Processor, for the bandwidth of the N rank amplitude modulation(PAM)s coded format according to determination, the setting bandwidth of first network node and the signal processing apparatus, determines the corresponding coded system of the-network node；And generate the selection control signal of the first network node according to the coded system of determination, with indicate the first network node selected from the signal of amplitude separation Hou N-1 roads which or which be correctly decoded； The data for being sent to the first network node are carried out N ranks amplitude modulation(PAM) for the coded system using the determination and encoded by encoder；Transmitter, for sending the data after the selection control signal and coding of the generation.10th, device according to claim 9, it is characterised in that the first network node is an ONT Optical Network Terminal ONT component or a component of optical network unit ONU.11st, the device as described in claim 9 or 10, it is characterised in that described device is a component of optical line terminal OLT.12nd, the device according to claim 9-11 any one, it is characterised in that the selection control signal is managed and safeguarded PLOAM messagings by physical layer operations.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2014/073310 WO2015135163A1 (en) | 2014-03-12 | 2014-03-12 | Signal processing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105103446A true CN105103446A (en) | 2015-11-25 |
| CN105103446B CN105103446B (en) | 2017-11-24 |
Family
ID=54070798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480000269.8A Active CN105103446B (en) | 2014-03-12 | 2014-03-12 | A kind of signal processing apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105103446B (en) |
| WO (1) | WO2015135163A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788738A (en) * | 2016-12-30 | 2017-05-31 | 上海交通大学 | Passive optical network based on 2DcodedPAM4 modulation systems |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110266396B (en) * | 2019-06-21 | 2020-08-25 | 上海交通大学 | Optical PAM-4 signal receiver and all-optical quantization method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571487A (en) * | 2004-04-30 | 2005-01-26 | 清华大学 | Mobile terminal receiving multimedia television broadcasting |
| CN101068130A (en) * | 2007-05-24 | 2007-11-07 | 上海大学 | Optical privacy communication system and securing method |
| CN101150343A (en) * | 2006-09-20 | 2008-03-26 | 华为技术有限公司 | A MIMO mobile communication method and system |
| US7555201B2 (en) * | 2002-03-01 | 2009-06-30 | Mediatek Inc. | Optical disc player system and method of controlling a decoding unit in the optical disc player system to read encoded bitstream data from a buffer memory |
| CN102130723A (en) * | 2010-12-13 | 2011-07-20 | 华为技术有限公司 | Optical signal generation device and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2396789B (en) * | 1999-04-16 | 2004-08-11 | Fujitsu Ltd | Optical line terminal |
| US7525992B1 (en) * | 2005-11-23 | 2009-04-28 | Marvell International Ltd. | Automatic communication channel fault mitigation |
| US8903250B2 (en) * | 2010-08-20 | 2014-12-02 | Broadcom Corporation | Cost-effective multi-rate upstream for 10GEPON based on high efficiency coding |
-
2014
- 2014-03-12 WO PCT/CN2014/073310 patent/WO2015135163A1/en active Application Filing
- 2014-03-12 CN CN201480000269.8A patent/CN105103446B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7555201B2 (en) * | 2002-03-01 | 2009-06-30 | Mediatek Inc. | Optical disc player system and method of controlling a decoding unit in the optical disc player system to read encoded bitstream data from a buffer memory |
| CN1571487A (en) * | 2004-04-30 | 2005-01-26 | 清华大学 | Mobile terminal receiving multimedia television broadcasting |
| CN101150343A (en) * | 2006-09-20 | 2008-03-26 | 华为技术有限公司 | A MIMO mobile communication method and system |
| CN101068130A (en) * | 2007-05-24 | 2007-11-07 | 上海大学 | Optical privacy communication system and securing method |
| CN102130723A (en) * | 2010-12-13 | 2011-07-20 | 华为技术有限公司 | Optical signal generation device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788738A (en) * | 2016-12-30 | 2017-05-31 | 上海交通大学 | Passive optical network based on 2DcodedPAM4 modulation systems |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105103446B (en) | 2017-11-24 |
| WO2015135163A1 (en) | 2015-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH06177846A (en) | Digital data-word communication system | |
| US7221711B2 (en) | Multilevel data encoding and modulation technique | |
| WO2011003329A1 (en) | 64b/66b coding and decoding device and method for realizing 64b/66b coding and decoding | |
| CN111049586B (en) | Pulse amplitude position modulation system based on amplitude reduction type probability forming | |
| WO2005096575A1 (en) | A circuit arrangement and a method to transfer data on a 3-level pulse amplitude modulation (pam-3) channel | |
| US7522641B2 (en) | Ten gigabit copper physical layer system | |
| CN102523436A (en) | Transmission terminal, receiving terminal, multi-channel video optical fiber transmission system and multi-channel video optical fiber transmission method | |
| CN105103446B (en) | A kind of signal processing apparatus | |
| CN102123122A (en) | Modulation-demodulation device and modulation-demodulation method | |
| CN201608734U (en) | Multi-standard self-adaptive modulator-demodulator | |
| CN109565487B (en) | Method, device and system for modulating and demodulating signal | |
| WO2024016870A1 (en) | Signal processing method, device, and system | |
| JP2008252435A (en) | Data transmitting device, and method of generating transmission code | |
| CN207302043U (en) | A kind of BMC decoding apparatus of dynamic bi-threshold | |
| CN112865886B (en) | Method for realizing FC communication rate detection based on FPGA | |
| CN106230759B (en) | Point-to-multipoint high-speed burst modulator, demodulator and modulation-demodulation device | |
| US7260151B2 (en) | Dual phase pulse modulation system | |
| CN101404558B (en) | Data transmission method and data processing device based on AMI encoding | |
| CN101330503B (en) | Method, system and equipment for transmitting data of Ethernet physical layer | |
| CN109347605B (en) | Encoding method, decoding method and device, and computer readable storage medium | |
| CN107534628B (en) | Circuit and method for obtaining PAM4 decoding threshold value and optical network unit | |
| EP3440813B1 (en) | Apparatus and method for recovering clock data from an m-level signal | |
| Hashima | Digital Communication Systems | |
| CN103746723B (en) | Wired paths information draws the equipment of connecing | |
| SU1415451A1 (en) | Two-channel device for receiving data signals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |