CN105103446B - A kind of signal processing apparatus - Google Patents
A kind of signal processing apparatus Download PDFInfo
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- CN105103446B CN105103446B CN201480000269.8A CN201480000269A CN105103446B CN 105103446 B CN105103446 B CN 105103446B CN 201480000269 A CN201480000269 A CN 201480000269A CN 105103446 B CN105103446 B CN 105103446B
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- 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
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Abstract
The invention discloses a kind of signal processing apparatus, it is related to the communications field, 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), concrete scheme is：Obtain initial signal, initial signal is divided into the road signals of N 1, obtain selection control signal, according to the selection control 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, reduce the power consumption of media access control layer data processing.
Description
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 network bandwidth disclosure satisfy that the demand of Most users, for the place of signal
Manage mostly by the way of multistage or high order modulation coding, to which the speed of data transfer can be increased.
Typically for the communication system of multistage amplitude modulation(PAM) coding, all data can be decoded and received by receiving terminal, and this will
MAC (Media Access Control, medium access control) layer of receiving terminal is asked to need to support higher transmission rate, still
The higher transmission rate of not each user's demand, therefore, existing technical scheme causes the waste of bandwidth resources, and
So 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 communication system intermediary of multistage amplitude modulation(PAM)
The problem of matter access control layered data processing power consumption is too high.
To reach above-mentioned purpose, embodiments of the invention adopt 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 letter
Number it is the electric signal encoded by N ranks amplitude modulation(PAM), N is the integer more than 2；
The shunt circuit, for receiving the initial signal, the initial signal is separated into M roads 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, select in the signal of the M roads one or more simultaneously
It is sent to decoder and carries out logic decoding.
With reference in a first aspect, in the first possible implementation, the selection control signal is by optical line terminal
OLT is sent to the signal processing apparatus.
With reference to the possible implementation of the first of first aspect or first aspect, in second of possible implementation
In, it is described selection control signal can by physical layer operations management and safeguard PLOAM message send.
With reference to first aspect to first aspect second of possible implementation in any implementation, at the third
In 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, at the 4th kind
In possible implementation, the multichannel unit, it is specifically used 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, it is defeated that M roads signal can be obtained
Go out.
With reference to first aspect to first aspect the 4th kind of possible implementation in any implementation, at the 5th kind
In possible implementation, the control signal is the control that the bandwidth set meal that optical line terminal OLT selects according to user generates
Signal, 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 N rank amplitude modulation(PAM)s coded format, the setting bandwidth of first network node and the institute according to determination
The bandwidth of signal processing apparatus is stated, determines coded system corresponding to the first network node；And the coding staff according to determination
Formula generates the selection control signal of the first network node, to indicate the first network node from the N-1 after amplitude separation
Selected in the signal of road which or which be correctly decoded；
Encoder, the data for being sent to the first network node are subjected to N ranks for the coded system using the determination
Amplitude modulation(PAM) encodes；
Transmitter, for the data after sending the selection control signal of the generation and encoding.
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 possible implementation of the first of second aspect or second aspect, in second of possible implementation
In,
Described device is a component of optical line terminal OLT.
With reference to the possible implementation of any one of second aspect or second aspect, in the third possible implementation
In,
The selection control signal by physical layer operations management and safeguards PLOAM messagings.
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 whole more than 2
Number；
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, selects one or more progress logic solution in the signal of the M roads
Code.
With reference to the third aspect, in the first possible implementation of the third aspect, the selection control signal be by
What optical line terminal OLT was sent.
With reference to the possible implementation of the first of the third aspect and the second face, in the first possible reality of the third aspect
In existing mode, the selection control signal by physical layer operations management and can safeguard that PLOAM message is sent.
It is described to press the initial signal in the third possible implementation of the third aspect with reference to the third aspect
Amplitude is separated into M roads signal, 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, it is defeated that M roads signal can be obtained
Go out.
With reference to the third aspect, in the 4th kind of possible implementation of the third aspect, the control signal is optical link
The control signal that the bandwidth set meal that terminal OLT is selected according to user generates, for select in the signal of the M roads all the way or a few roads
Signal.
Fourth aspect, a kind of optical network communication system, the network system include dispensing device and reception device, including：
The dispensing device, for sending initial optical signal to the reception device, wherein, the initial optical signal passes through
Optical signal after N ranks amplitude modulation(PAM) coding, N are the integer more than 2；According to the bandwidth of the reception device and the dispensing device
The relation of bandwidth, generation selection control signal, the selection control signal is sent to the reception device；Determine coded format,
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 transacting described in first aspect any one possible implementation
Device；
Or the reception device is second aspect or the signal described in second aspect any one possible implementation
Processing unit.
The signal processing apparatus that embodiments of the invention provide, by obtaining initial signal, initial signal is divided into M roads letter
Number, control signal is obtained, according to the control signal, one or more progress logic decoding in the signal of the M roads is selected, makes
Obtaining media access control layer only needs to handle the decoded signal of the part signal in initial signal, saves bandwidth resources, reduces
The power consumption of media access control layer data processing.
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, embodiment will be described below
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description be only the present invention some
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 is a kind of signal processing method schematic flow sheet that embodiments of the invention provide；
Fig. 2 is the PAM4 shunt circuit structural representations that embodiments of the invention provide；
Fig. 3 is the receiving device structural representation for the PAM4 coded formats that embodiments of the invention provide；
Fig. 4 is receiving terminal INSHIN and the selection course signal for the PAM4 coded formats that embodiments of the invention provide
Figure；
Fig. 5 is a kind of signal processing apparatus structural representation that embodiments of the invention provide；
Fig. 6 is a kind of network architecture schematic diagram that embodiments of the invention provide.
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 carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Embodiment one,
Embodiments of the invention provide a kind of signal processing method, in the communication system applied to multistage amplitude modulation(PAM), ginseng
According to shown in Fig. 1, comprise the following steps：
Step 101, obtain 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.Institute
State and shake hands, i.e., communicating pair has used dedicated control signal to carry out state instruction.The existing transmitting terminal of this control signal is to reception
End, also there is receiving terminal to transmitting terminal.Clock-domain crossing data is handled using Handshake Protocol mode to transmit, it is only necessary to both sides'
Handshake (REQ (Request, request signal) and ACK (Acknowledge, answer signal)) uses pulse detection side respectively
Method synchronizes.It is first all in disarmed state, transmitting terminal when in the specific implementation, assuming REQ, ACK, data/address bus in initialization
Data, such as the coded system that intercommunication uses, bus is put into, then sends effective REQ signal to receiving terminal.Receive
End latch data bus after effective REQ signal is detected, then the effective ack signal of loopback one, which represents to read, completes to answer
Answer.Send equipment and current REQ signal is cancelled after effective ack signal is detected, receiving device is after REQ revocations are detected
Corresponding revocation ack signal, now completes a subnormal handshake communication.Hereafter, transmitting terminal can continue start shake hands next time it is logical
Letter, so circulation.
In this way, communicating pair passes through handshake procedure, it is determined that coded system.
For example communicating pair can use duobinary system (Double Binary, DB) to encode by the negotiation of handshake procedure
Mode, 4 rank pulse amplitude modulations coding (Pulse Amplitude Modulation, PAM4), N ranks pulse amplitude modulation coding
Coded systems such as (Pulse Amplitude Modulation, PAMN).Wherein N is the integer more than 2.
Illustrated so that both sides use PAM4 coded systems as an example, for example uncoded preceding binary sequence is
" 010110110010 ", then use PAM4 encode after data for " 112302 " because PAM4 coding be by binary sequence
In two bits as one, such as 00 corresponding 0,01 corresponding 1,10 corresponding 2,11 corresponding 3.Wherein, in hardware circuit,
The Binary Zero, 1 represented by impulse amplitude, magnitude of voltage etc., and low pulse or low-voltage represent 0, high impulse or high voltage generation
Table 1.Similarly, 0123 after the PAM4 codings also corresponds to different pulses or voltage respectively, using the height or electricity of pulse
The height of pressure distinguishes different values.
Transmitting terminal sends the signal after the PAM4 is encoded to receiving terminal, and receiving terminal receives the letter after the PAM4 codings
Number, it is the initial signal；
Alternatively, in a kind of optical network communication system, the transmitting terminal to binary sequence after encoding, by this
Encoded signal is converted to optical signal, is transmitted into receiving terminal, after receiving terminal receives the optical signal, is converted to electric signal, the electric signal
For the initial signal.
Step 102, the initial signal is divided into M roads signal.
Wherein, M is integer, and M=N-1, N are the exponent number for the pulse amplitude modulation coding that initial signal uses, such as right
Then N is 4, M 3 to PAM4 signals；Then N is 8, M 7 to PAM8 signals.
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, it is defeated that M roads signal can be obtained
Go out.
Further, according in step 101, transmitting terminal and receiving terminal establish PAM4 coded system during shaking hands
Learn, receiving terminal is to the PAM4 decoding circuits of initial signal, using 3 road comparators, or 3bit analog-digital converter ADC.
So that using exemplified by 3 road comparators, 3 road comparator is by 3 threshold values, and now M=3, can be divided into 3 by the initial signal
Road signal.
When i.e., using PAM4 decoding circuits, initial signal can be divided into 3 road signals by 3 threshold values, such as Fig. 2 institutes
Show.For example the data that transmitting terminal is sent are 20G, the data that receiving side receives are 10G, and implementation can only be selected in Fig. 2
Second Threshold output result, it is possible to obtain 10G data.Reason is as follows：Result more than the 3rd threshold value is 11, less than the
The result of one threshold value is 00, and it is 01 to be less than Second Threshold more than first threshold, more than the result that Second Threshold is less than the 3rd threshold value
For 10, when using the comparative result of Second Threshold, data out can distinguish 11,10 and 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 more than Second Threshold
First digit is 1, and the first digit less than Second Threshold is 0, that is, the previous position of two bits passes through a Second Threshold
Can show that the data transmitted every time are two, obtains previous position equivalent to obtaining the half of data.Only select accompanying drawing 3
The output result of shown comparator 2, 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 be 20G, a receiving terminal reception 10G, it can also select
Select second of signal shown in Fig. 4, i.e. the output result of comparator 1 and the output result of comparator 2 are in the first logic in Fig. 3
Door carries out XOR, then carries out XOR in the second gate with output result of the result of the XOR again with comparator 3.
For another example, if the data that transmitting terminal is sent are 20G, receiving terminal receives 5G data, there is multiple ways, way one
10G data can be obtained by Second Threshold, logical process part below introduces a d type flip flop, clock selecting 5G
Clock sampling, such result are exactly in 10G data, every one data of a data sampling, have also just obtained 10G data
The data of half, i.e. 5G.Another way, it has a precondition, in 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, after it being become into PAM4, two two encode together, and 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) it is to receive the 3rd threshold value to compare the result come, its result is represented 11, and 10,01,00
Distinguish.As long as 11 combinations are represented into a data when OLT is encoded, non-11 combinations are represented into another data, then
Receive data out to be equivalent to distinguish this combination, that is, 25% acquisition of information, connect in this example
Receiving end receives 5G data.
Step 103, selection control signal is obtained, selected according to the selection control signal in the signal of the M roads all the way
Or multichannel carries out logic decoding, decoded signal is generated.
Wherein, it is to be sent to receiving terminal by transmitting terminal to select control signal.
The selection control signal is related to the bandwidth of user (being considered as receiving terminal) selection.
Such as, it is assumed that operator (transmitting terminal) a width of 100M of output transmission, user as receiving terminal, operator (
Can be considered transmitting terminal) selection 50M family's bandwidth set meal, then set according to the 50M of user bandwidth, transmitting terminal will use in advance
The data encoding that family needs into the code stream of half, by transmitting terminal and receiving terminal consulted to determine, for example is used by coded format
PAM4 is encoded, and in the 100M data that receiving terminal transmits from circuit, according to the selection control signal of transmitting terminal, selects oneself
50M data are decoded, that is, select the Second Threshold output result in shunt circuit as shown in Figure 2, or defeated to first threshold
Go out result and carry out XOR processing with the 3rd threshold value output result, then the result and Second Threshold output result are subjected to XOR
Processing.
Described control signal can be sent by the Handshake Protocol message of transmitting terminal and receiving terminal, can also pass through physics
Layer operation management message (Physical Layer Operation And Management, PLOAM) message packet carries, and takes
In the extended field or reserved field of band in messages.
The signal processing method that the present embodiment provides, by obtaining initial signal, is divided into M roads signal by initial signal, selects
One or more selected in the signal of the M roads carries out logic decoding so that media access control layer only needs to handle initial signal
In part signal decoded signal, save bandwidth resources, reduce the power consumption of media access control layer data processing.
Embodiment two,
Based on embodiment corresponding to above-mentioned Fig. 1, embodiments of the invention provide a kind of signal processing apparatus, for execution
The signal processing method described in embodiment corresponding to Fig. 1 is stated, shown in reference picture 5, the signal processing apparatus 501 includes branch
Circuit 5011, selector 5012.
Shunt circuit 5011, for receiving initial signal, initial signal is separated into M roads 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 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 value；
According to M threshold value, initial signal is compared with M threshold value respectively, M roads signal output can be obtained.
Selector 5012, control signal is selected for receiving, according to selection control signal, selected in the signal of M roads all the way
Or multichannel 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), for choosing
Select the signal that device 5012 is selected and carry out logic decoding to recover initial data, generally in the form of media access control MAC chip
Appearance or other decoder modules or device.
Alternatively, selection control signal is sent to signal processing apparatus 501 by optical line terminal OLT.
Selection control signal can by physical layer operations management and safeguard PLOAM message send, carry in PLOAM message
Extended field or reserved field in.
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 completed by the handshake procedure between transmitting terminal and receiving terminal.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 to receiving terminal
Receiving terminal is to transmitting 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) and ACK (Acknowledge, answer signal)) is carried out same using pulse detecting method respectively
Step.All in disarmed state when in the specific implementation, assuming REQ, ACK, data/address bus in initialization, transmitting terminal first data,
Such as the coded system that intercommunication uses, bus is put into, then sends effective REQ signal to receiving terminal.Receiving terminal is being examined
Latch data bus after effective REQ signal is measured, then the effective ack signal of loopback one, which represents to read, completes response.Hair
Equipment is sent to cancel current REQ signal after effective ack signal is detected, receiving device is also corresponding after REQ revocations are detected
Ack signal is cancelled, now completes a subnormal handshake communication.Hereafter, transmitting terminal can continue to start handshake communication next time, such as
This circulation.
In this way, communicating pair passes through handshake procedure, it is determined that coded system.
For example communicating pair can use duobinary system (Double Binary, DB) to compile by the negotiation of handshake procedure
Code mode, 4 rank pulse amplitude modulations coding (Pulse Amplitude Modulation, PAM4), n ranks pulse amplitude modulation are compiled
The coded formats such as code (Pulse Amplitude Modulation, PAM n).In addition, it is also necessary to taken it is determined that receiving end data
Which part of the coded data that transmitting terminal is sent.
Illustrated so that both sides use PAM4 coded systems as an example, for example uncoded preceding binary sequence is
" 010110110010 ", then use PAM4 encode after data for " 112302 " because PAM4 coding be by binary sequence
In two bits as one, such as 00 corresponding 0,01 corresponding 1,10 corresponding 2,11 corresponding 3.Wherein, in hardware circuit,
Binary Zero, 1 represent that low pulse or low-voltage represent 0, and high impulse or high voltage represent 1 by impulse amplitude, magnitude of voltage etc..
Similarly, 0123 after PAM4 codings also corresponds to different pulses or voltage respectively, using the height of pulse or the height of voltage
To distinguish different values.
Alternatively, transmitting terminal sends the signal after PAM4 is encoded to receiving terminal, and receiving terminal receives the letter after PAM4 codings
Number, it is initial signal；
Alternatively, in a kind of optical network communication system, transmitting terminal encodes this after being encoded to binary sequence
Signal is converted to optical signal, is transmitted into receiving terminal, after receiving terminal receives the optical signal, receiver converts optical signals to telecommunications
Number, the electric signal is initial signal.
Specifically, shunt circuit 5011 can use comparator to realize, analog-digital converter can also be used to realize.To use
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, such as Fig. 2 institutes
Show.For example the data that transmitting terminal is sent are 50G, the data that receiving side receives are 10G, and implementation can only be selected in Fig. 2
Second Threshold output result, it is possible to obtain 10G data.Reason is as follows：Result more than the 3rd threshold value is 11, less than the
The result of one threshold value is 00, and it is 01 to be less than Second Threshold more than first threshold, more than the result that Second Threshold is less than the 3rd threshold value
For 10, when using the comparative result of Second Threshold, data out can distinguish 11,10 and 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 more than Second Threshold
First digit is 1, and the first digit less than Second Threshold is 0, that is, the previous position of two bits passes through a Second Threshold
Can show that the data transmitted every time are two, obtains previous position equivalent to obtaining the half of data.
For another example, if the data that transmitting terminal is sent are 50G, receiving terminal receives 5G data, can pass through Second Threshold
10G data are obtained, logical process department below introduces a d type flip flop, and clock selecting is 5G clock samplings, such knot
Fruit is exactly in 10G data, every one data of a data sampling, has also just obtained the half of 10G data, i.e. 5G data.
Specifically, one or more in the signal of selection M roads carries out logic decoding, it is the bandwidth set meal selected according to user
Come what is determined.
Such as, it is assumed that operator (transmitting terminal) a width of 100M of output transmission, user as receiving terminal, operator (
Can be considered transmitting terminal) selection 50M family's bandwidth set meal, then set according to the 50M of user bandwidth, transmitting terminal will use in advance
The data encoding that family needs into the code stream of half, by transmitting terminal and receiving terminal consulted to determine, for example is used by coded format
PAM4 is encoded, and in the 100M data that receiving terminal transmits from circuit, according to the selection control signal of transmitting terminal, selects oneself
50M data are decoded, that is, select the Second Threshold output result in shunt circuit as shown in Figure 2.Can also be by this
50M data encodings enter another way signal, by carrying out XOR processing to first threshold output result and the 3rd threshold value output result,
XOR processing is carried out to the XOR result and Second Threshold output result again.
Alternatively, receiver 5013 can be ROSA, and shunt circuit 5011 can be comparator, can also be analog-to-digital conversion
Device or digital analog converter, such as PAM4 codings, comparator can be 3, or 3-bit analog-digital converters ADC.Patrol
It can be NOR gate circuit or other hardware circuits to collect decoding circuit, and processor can use field programmable gate array
(Field-Programmable Gate Array, FPGA), special chip (Application Specific can be used
Integrated Circuit, ASIC), central processing unit (Central Processor Unit, CPU) can also be used, also
Digital signal processing circuit (Digital Signal Processor, DSP) can be used, microcontroller can also be used
(Micro Controller Unit, MCU), can also use programmable controller (Programmable Logic Device,
) or other integrated chips PLD.
The signal processing apparatus that the present embodiment provides, initial signal is obtained by receiver, shunt circuit is by initial signal
It is divided into M roads signal, selector selects one or more progress logic decoding in the signal of the M roads so that medium access control
Layer only needs to handle the decoded signal of the part signal in initial signal, saves bandwidth resources, reduces medium access control
The power consumption of layer data processing.
The embodiment of the present invention provides a kind of signal processing apparatus, can be the module or one in optical line terminal OLT
Individual part.The signal processing apparatus can include processor, for the N rank amplitude modulation(PAM)s coded format according to determination,
The setting bandwidth of one network node and the bandwidth of the signal processing apparatus, determine to encode corresponding to the first network node
Mode；The N rank amplitude modulation(PAM) coded formats can be dispatched from the factory with receiving terminal negotiation determination or the signal processing apparatus
When just set or by hand set, can also pass through Remote configuration.Coded system corresponding to first network node includes compiling
Which or which several signals the data of code form and the first network node are coded into, such as are referred in previous examples
, signal processing apparatus (also may be used as transmitting terminal, a width of 100M of its output transmission, user as receiving terminal in operator
Be considered as transmitting terminal) selection 50M family's bandwidth set meal, then according to the 50M of user bandwidth set, (transmitting terminal) signal transacting
Device by the code stream of the data encoding that user needs to half, by transmitting terminal and receiving terminal consulted to determine by coded format,
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 passes through to the road or a few roads
The decoding of signal just can correctly recover the data of itself.I.e. receiving terminal does not have to decode with regard to energy the whole signals received
Correctly recover data.Specifically, by taking PAM4 system as an example, it is assumed that 4 ONU (Optical of an OLT connection
Network Unit, optical network unit), for OLT with a width of 50G, ONU1 receives 50G signals, and ONU2 receives 10G signals, and ONU3 connects
Other half 10G signals are received, 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
Select the result of three threshold values and make logical process, ONU2, ONU3 and ONU4 detailed processing are referring to previous embodiment.
The signal processing apparatus (transmitting terminal) also includes encoder and transmitter, and wherein encoder is used to use the determination
Coded system will be sent to the data of transmitting terminal and carry out N ranks amplitude modulation(PAM)s coding.Continue the example of the preceding paragraph, OLT codings can
Be it is such, wherein an either bn be 0 or 1 data.Specifically, it is to Onu1 coded data：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, the data after being additionally operable to send the selection control signal of the generation and encoding.The signal processing apparatus
Electrical to optical converter can also be included in (transmitting terminal), the data after coding and selection control signal are converted into optical signal, led to
Transmitter is crossed to send.Due to OLT and ONU/ONT composition PONs, in the downstream direction, OLT is as transmitting terminal, ONT/
ONU is as receiving terminal.Therefore selection control signal can be carried in the PLOAM message transmitted therebetween, can also be passed through
The Handshake Protocol message of transmitting terminal and receiving terminal is sent, or and is sent after being encoded together with data-signal.
The signal processing apparatus that the present embodiment provides, by the way that the data encoding of receiving terminal is entered into the one of transmitting terminal encoded signal
In part, send selection control signal instruction receiving terminal and the part signal for including reception end data is decoded, realization connects
Receiving end only decoded portion signal, which can be realized, to be correctly decoded, and is saved bandwidth resources, is reduced at media access control layer data
The power consumption of reason；The bandwidth processing Capability Requirement to receiving device is also reduced, cost can be reduced, improves cost performance.
Embodiment three,
Embodiments of the invention provide a kind of communication system, and shown in reference picture 6, 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) or
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 optical-fiber network
Terminal (Optical Network Terminal, ONT) or 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 6011, for sending initial optical signal to reception device 6012, wherein, initial optical signal passes through N ranks
Optical signal after amplitude modulation(PAM) coding, N are 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, according to coded format to be sent
Data to reception device are encoded and sent；
Reception device 6012 can be the signal processing apparatus described in embodiment corresponding to Fig. 5.
The communication system that the present embodiment provides, by obtaining initial signal, initial signal is divided into M roads signal, selects institute
One or more stated in the signal of M roads carries out logic decoding so that media access control layer only needs to handle in initial signal
The decoded signal of part signal, saves bandwidth resources, reduces the power consumption of media access control layer data processing.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (11)
- 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. device according to claim 1, it is characterised in that the selection control signal by physical layer operations management and Safeguard PLOAM messagings.
- 3. device according to claim 1, it is characterised in that the shunt circuit is comparator or digital analog converter.
- 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. 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. device according to claim 5, it is characterised in that the logical process is XOR processing.
- 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.
- 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. 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. device as claimed in claim 8 or 9, it is characterised in that described device is a component of optical line terminal OLT.
- 11. according to the device described in claim 8-9 any one, it is characterised in thatThe selection control signal by physical layer operations management and safeguards PLOAM messagings.
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| CN106788738A (en) * | 2016-12-30 | 2017-05-31 | 上海交通大学 | Passive optical network based on 2DcodedPAM4 modulation systems |
| 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 |
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| 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
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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 |
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