WO2011120215A1 - 数据处理方法、系统和接收机 - Google Patents
数据处理方法、系统和接收机 Download PDFInfo
- Publication number
- WO2011120215A1 WO2011120215A1 PCT/CN2010/071389 CN2010071389W WO2011120215A1 WO 2011120215 A1 WO2011120215 A1 WO 2011120215A1 CN 2010071389 W CN2010071389 W CN 2010071389W WO 2011120215 A1 WO2011120215 A1 WO 2011120215A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data block
- current
- previous
- output data
- processing
- Prior art date
Links
- 238000003672 processing method Methods 0.000 title claims abstract description 17
- 238000012937 correction Methods 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 30
- 230000003287 optical effect Effects 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims description 139
- 238000001914 filtration Methods 0.000 claims description 15
- 238000012804 iterative process Methods 0.000 claims 1
- 238000012549 training Methods 0.000 abstract description 28
- 230000005540 biological transmission Effects 0.000 abstract description 15
- 238000010586 diagram Methods 0.000 description 14
- 230000017105 transposition Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0057—Block codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
- H04B10/69—Electrical arrangements in the receiver
- H04B10/697—Arrangements for reducing noise and distortion
- H04B10/6971—Arrangements for reducing noise and distortion using equalisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0047—Decoding adapted to other signal detection operation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03598—Algorithms
- H04L2025/03611—Iterative algorithms
- H04L2025/03649—Algorithms using recursive least square [RLS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
Definitions
- Embodiments of the present invention relate to the field of optical communications, and in particular, to a data processing method, system, and receiver. Background technique
- the optical data signal is usually processed by the distortion compensation technology based on the electric domain processing.
- the distortion compensation technique processes the optical data signal to form a data block and equalizes the data block by the equalizer.
- the equalizer can effectively compensate for various distortion effects of the optical data signal during transmission, such as: dispersion or polarization mode dispersion.
- the equalizer usually performs equalization processing on the data block based on the Training Sequence, which requires the transmitting end to insert the training sequence into the data block.
- the receiving end After receiving the optical data signal sent by the transmitting end, the receiving end converts the optical data signal into a data block, and needs to perform correlation processing on the data block to find a training sequence interpolated in the data block, and then the equalizer is based on the data.
- the training sequence found in the block results in a set of tap coefficients, and the data block is equalized according to the set of tap coefficients.
- Embodiments of the present invention provide a data processing method, system, and receiver for improving data transmission efficiency.
- the embodiment of the invention provides a data processing method, including: Performing photoelectric conversion processing on the received current optical data signal to generate a current electrical data signal; performing analog-to-digital conversion processing on the current electrical data signal to generate a current data block;
- An embodiment of the present invention provides a receiver, including: a photoelectric converter, an analog to digital converter, an equalizer, and a forward error correction decoder;
- the photoelectric converter is configured to perform photoelectric conversion processing on the received current optical data signal to generate a current electrical data signal
- the analog-to-digital converter is configured to perform analog-to-digital conversion processing on the current electrical data signal to generate a current data block;
- the equalizer is configured to perform equalization processing on the current data block according to the last second output data block output by the forward error correction decoder to generate a current first output data block, and the previous second output data
- the block is generated by the forward decoding error corrector performing forward error correction decoding processing on the previous first output data block, wherein the previous first output data block is used by the equalizer to the current
- the previous data block of the data block is generated by equalization processing;
- the forward error correction decoder is configured to perform forward error correction decoding processing on the current first output data block to generate a current second output data block.
- An embodiment of the present invention provides a data processing system, including: a transmitter and the foregoing receiver; and the transmitter, configured to send a current optical data signal.
- the data processing method, system and receiver provided in this embodiment perform equalization processing on the current data block according to the last second output data block, perform decoding error correction processing on the current first output data block, and generate a current second Output data block.
- the previous data of the current data block can be used in this embodiment.
- the block performs equalization processing and decoding error correction processing to generate a previous second output data block, and performs equalization processing on the current data block according to the previous second output data block, so that the data block is not equalized by using the training sequence, so there is no need to The training sequence is added to the data block, thereby improving the data transmission efficiency.
- FIG. 1 is a flowchart of a data processing method according to Embodiment 1 of the present invention.
- FIG. 2a is a flowchart of a data processing method according to Embodiment 2 of the present invention.
- 2b is a schematic structural diagram of a data block according to an embodiment of the present invention.
- FIG. 2c is a schematic diagram of a burst error in a data block of a long codeword according to an embodiment of the present invention
- FIG. 2d is a schematic diagram of a burst error in a data block of a short codeword according to an embodiment of the present invention
- a schematic structural diagram of a receiver provided in Embodiment 3 of the present invention
- FIG. 4a is a schematic structural diagram of a receiver according to Embodiment 4 of the present invention.
- FIG. 4b is a schematic structural diagram of a filter processing apparatus according to an embodiment of the present invention.
- FIG. 5 is a schematic structural diagram of a data processing system according to Embodiment 5 of the present invention. detailed description
- FIG. 1 is a flowchart of a data processing method according to Embodiment 1 of the present invention. As shown in FIG. 1, the method includes:
- Step 101 Perform photoelectric conversion processing on the received current optical data signal to generate a current electrical data signal.
- the steps in this embodiment can be performed by a receiver.
- the receiver can receive the current optical data signal sent by the transmitter, and perform photoelectric conversion processing on the received current optical data signal to generate a current electrical data signal.
- the photoelectric conversion processing on the current optical data signal may specifically be: performing photoelectric conversion processing based on coherent detection on the current optical data signal.
- the current optical data signal sent by the transmitter includes a Forward Error Code (FEC) overhead.
- FEC Forward Error Code
- Step 102 Perform analog-to-digital conversion processing on the current electrical data signal to generate a current data block.
- Step 103 Perform equalization processing on the current data block according to the previous second output data block to generate a current first output data block, where the previous second output data block performs forward error correction on the previous first output data block.
- the previous first output data block is generated by equalizing the previous data block of the current data block.
- the receiver performs equalization processing on the previous data block of the current data block to generate a previous first output data block, and performs forward error correction decoding processing on the previous first output data block to generate a previous second output.
- Data block, and performing equalization processing on the current data block according to the previous second output data block to generate a current first output data block are equalization processing on the previous data block of the current data block.
- Step 104 Perform forward error correction decoding processing on the current first output data block to generate a current second output data block.
- the data processing method provided in this embodiment performs equalization processing on the current data block according to the previous second output data block, and performs forward error correction decoding processing on the current first output data block to generate a current second output data block.
- the previous data block of the current data block may be subjected to equalization processing and forward error correction decoding processing to generate a previous second output data block, and the current data block is equalized according to the previous second output data block.
- FIG. 2a is a flowchart of a data processing method according to Embodiment 2 of the present invention. As shown in FIG. 2a, the method includes:
- Step 201 The receiver receives the current optical data signal sent by the transmitter, performs photoelectric conversion processing on the current optical data signal, and generates a current electrical data signal.
- Step 202 The receiver performs analog-to-digital conversion processing on the current electrical data signal to generate a current data block.
- Figure 2b is a schematic structural diagram of a data block in the embodiment of the present invention.
- Fig. 2b shows n consecutive data blocks, namely data block 1, data block 2 data block n.
- Each data block includes FEC overhead and data corresponding to the FEC overhead (da ta ).
- the current data block can be any data block, for example: If the current data block is data block 2, the previous data block of the current data block is data block 1.
- the current data block includes a current FEC overhead and current data corresponding to the current FEC overhead
- the previous data block includes a previous FEC overhead and a previous data corresponding to the previous FEC overhead.
- Step 203 The receiver performs subtraction processing on the previous second output data block from the previous first output data block to generate a current difference, where the previous second output data block is sent by the receiver to the previous first output data block.
- the previous first error data block is generated by the receiver to perform equalization processing on the previous data block of the current data block.
- the receiver performs equalization processing on the previous data block of the current data block to generate a previous first output data block.
- the receiver performs forward error correction decoding processing on the previous first output data block to generate a previous second output data block.
- Step 204 The receiver iteratively processes the previous tap coefficient group according to the current difference to generate a current tap coefficient group.
- the tap coefficient group can be used to filter the data block.
- both the previous tap coefficient group and the current tap coefficient group can be used for filtering processing.
- the receiver can compare each tap coefficient in the previous tap coefficient group according to the current difference value. Iterative processing is performed to generate each tap coefficient in the current set of tap coefficients.
- the receiver can iteratively process the previous set of tap coefficients by the Least Mean Square (LMS) algorithm to generate the current set of tap coefficients.
- LMS Least Mean Square
- u is the step factor, u can be a predefined constant
- X(n) is the current input vector for equalization processing, the current input vector is formed by the current data block
- error (m) is the current difference, m Is a positive integer and n is a positive integer.
- H(m+1) can be expressed as [h m+ , h m+1 2 ...h m+1 n ], and H(m) can be expressed as ⁇ , h ⁇ ...h m J , where , h m+1 n is the tap coefficient in the current tap coefficient group, and h m n is the tap coefficient in the previous tap coefficient group.
- X(n) can be expressed as [ Xl x 2 ... x n ].
- the receiver can also perform the iterative processing on the previous tap coefficient group by other algorithms to generate the current tap coefficient group, which is no longer listed here.
- Step 205 The receiver performs filtering processing on the current data block according to the current tap coefficient group to generate a current first output data block.
- H(m) is a vector representing the current set of tap coefficients
- X(n) is the current input vector formed by the current data block
- Y (n) is the current output value obtained by filtering according to the above formula, the current output value Forming a current first output data block.
- H(m) is obtained by vector transposition of H(m), for example: When H(m) is a row vector, H(m) is a column vector.
- the receiver performs vector transposition on the vector characterizing the current set of tap coefficients, and multiplies the transposed vector by the current input vector formed by the current data block to generate a current first output data block.
- the receiver can also filter the current data block by other means. Generate the current first output data block, no longer here - enumeration.
- Step 206 The receiver performs forward error correction decoding processing on the current first output data block to generate a current second output data block.
- Step 207 The receiver outputs a current second output data block.
- the execution order of each step is only an example, and the order of execution of the above steps may be changed as needed in an actual application.
- step 206 of the embodiment if the receiver queries that the current first output data block includes an error, and the error in the current first output data block is a burst error (Burst Error), the receiver cannot Performing error correction processing on the current first output data block, the receiver does not perform error correction processing on the error in the current first output data block during the forward error correction decoding process on the current first output data block. . And the receiver no longer uses the current second output data block for subtraction processing from the current first output data block to generate the next difference.
- burst error Burst Error
- a Burst Error caused by a channel change occurs in the data block. If a burst error occurs in the data block, the data block will not be used for the difference generation process, which will result in the receiver not being able to iterate the tap coefficients.
- the codeword of the data block is a long codeword, for example, the length of the data block is greater than 100000 bits, the burst error is likely to occur in a plurality of consecutive data blocks.
- burst errors occur in consecutive data blocks, the consecutive multiple data blocks cannot be used for the difference generation, which will result in the receiver's iterative efficiency for the tap coefficient group is reduced, thereby reducing the receiver's data block.
- FIG. 2c is a schematic diagram of a burst error occurring in a data block of a long codeword according to an embodiment of the present invention.
- a burst error occurs in data block 1 and data block 2.
- the previous data block is data block 1
- the current data block is data block 2.
- a burst error occurs in both the previous data block and the current data block, and the generated second output data block and the current second output data block also include a burst error, so that the previous second output data block cannot be used.
- the current second output data block is also not Can be used for the generation of the next difference, so that the receiver can not iteratively process the tap coefficient group, reducing the iterative efficiency of the tap coefficient group.
- the codeword of the data block in the embodiment of the present invention is a short codeword, for example: the length of the data block includes 100 bits to 100000 bits.
- the length of the current data block includes 100 bits to 100000 bits, and the length of the previous data block includes 100 bits to 100000 bits.
- 2d is a schematic diagram of a burst error in a data block of a short codeword according to an embodiment of the present invention. As shown in FIG. 2d, since the codeword of the data block is a short codeword, when the channel changes, a burst error occurs.
- the code appears in data block 1 and data block 3, avoiding the occurrence of burst errors in consecutive data blocks, improving the iterative efficiency of the receiver for the set of tap coefficients, thereby improving the receiver's equalization processing of the data blocks.
- the receiver performs update processing on the previous tap coefficient group according to the current difference generated by subtracting the previous second output data block from the previous first output data block to generate a current The tap coefficient, iteratively processes the current data block according to the current tap coefficient group to generate a current first output data block, and performs forward error correction decoding processing on the current first output data block to generate a current second output data block.
- the previous data block of the current data block may be subjected to equalization processing and forward error correction decoding processing to generate a previous second output data block, and according to the previous second output data block and the previous first output data.
- the block generates a current difference, so that the receiver performs equalization processing on the current data block according to the current difference, and does not need to use the training sequence to perform equalization processing on the current data block, so there is no need to add a training sequence in the data block, thereby improving data transmission. effectiveness.
- the transmitting end Since there is no need to add a training sequence to the data block, the transmitting end does not need to set a training sequence to insert the device, thereby reducing the cost.
- the receiver Since the prior art calculates the difference according to the training sequence in the data block, and the receiver performs equalization processing on the data block according to the calculated difference, if the receiver cannot correctly obtain the training sequence from the data block, the accurate calculation cannot be performed.
- the difference is calculated, thereby reducing the processing performance of the receiver on the data block.
- the receiver uses the previous second output data block subjected to the forward error correction decoding process to generate the current difference, thereby ensuring the accuracy of the generated difference, thereby improving the processing performance of the receiver on the data block. .
- the codeword of the data block is a short codeword, which avoids the problem that the data block that the burst error occurs in the continuous data block cannot be used to generate the difference, and improves the iteration of the receiver on the tap coefficient group. The efficiency, thereby improving the receiver's ability to equalize the data block, and improving the quality of the data block output after the equalization process.
- FIG. 3 is a schematic structural diagram of a receiver according to Embodiment 3 of the present invention. As shown in FIG. 3, the receiver includes: a photoelectric converter 11, an analog-to-digital converter 12, an equalizer 13, and forward error correction. Coder 14.
- the photoelectric converter 11 performs photoelectric conversion processing on the received current optical data signal to generate a current electrical data signal.
- the analog to digital converter 12 performs analog to digital conversion processing on the current electrical data signal to generate a current data block.
- the equalizer 1 3 equalizes the current data block according to the last second output data block outputted by the forward error correction decoder 14 to generate a current first output data block.
- the previous second output data block is generated by the forward error correction decoder 14 performing forward error correction decoding processing on the previous first output data block, and the previous first output data block is obtained by the equalizer 1 3 is generated by equalizing the previous data block of the current data block.
- the forward error correction decoder 14 performs forward error correction decoding processing on the current first output data block to generate a current second output data block.
- the receiver provided in this embodiment can be used to implement the data processing method provided in Embodiment 1 above.
- the receiver provided in this embodiment may perform equalization processing on the current data block according to the previous second output data block, perform forward error correction decoding processing on the current first output data block, and generate a current second output data block.
- the previous data block of the current data block may be subjected to equalization processing and forward error correction decoding processing to generate a previous second output data block, and the current data block is equalized according to the previous second output data block. , there is no need to use the training sequence to equalize the data block, so There is no need to increase the training sequence overhead in the data block, thereby improving the data transmission efficiency.
- the receiver includes: a photoelectric converter 11, an analog-to-digital converter 12, an equalizer 13, and forward error correction decoding.
- the equalizer 13 includes a filter processing device 131, a difference value generating device 132, and a tap coefficient generating device 133.
- the photoelectric converter 11 performs photoelectric conversion processing on the received current optical data signal, generates a current electrical data signal, and outputs the current electrical data signal to the analog-to-digital converter 12.
- the analog-to-digital converter 12 performs analog-to-digital conversion processing on the current electrical data signal, generates a current data block, and outputs the current data block to the filter processing means 131.
- the forward error correction decoder 14 performs forward error correction decoding processing on the previous first output data block outputted by the filter processing device 131 to generate a previous second output data block, and outputs a previous second output data block, and outputs The last second output data block is output to the difference generating means 132.
- the previous first output data block is generated by the filter processing means 131 filtering the previous data block of the current data block according to the last tap coefficient set generated by the difference generating means 132.
- the filter processing device 131 outputs the previous first output data block to the forward error correction decoder 14 after filtering the previous data block according to the previous tap coefficient group to generate the previous first output data block. And outputting the previous first output data block to the difference generating means 132.
- a delay respectively connected to the filter processing means 131 and the difference generating means 132 may be set in the equalizer 13.
- Device 134 receives the last first output data block outputted by the filter processing means 131 and delays transmission of the last first output data block to the difference generating means 132.
- the difference generating means 132 subtracts the previous second output data block from the previous first output data block to generate a current difference, and outputs the current difference to the tap coefficient generating means 133.
- the tap coefficient generating means 133 iteratively processes the previous tap coefficient group based on the current difference, generates a current tap coefficient group, and outputs the current tap coefficient group to the filter processing means 131.
- a tap coefficient group H (m) is iteratively processed to generate a current tap coefficient group H (m+1).
- u is the step factor, u can be a predefined constant
- X(n) is the current input vector for equalization, the current input vector is formed by the current data block
- error (m) is the current difference, m Is a positive integer and n is a positive integer.
- H (m + 1) can be expressed as [IT ⁇ h m + 1 2 ⁇ h m + 1 n]
- H (m) can be expressed as ⁇ , h m 2 ... h m J, where, h m+1 n is the tap coefficient in the current tap coefficient group, and h m n is the tap coefficient in the previous tap coefficient group.
- (1) can be expressed as [ 1 2 ... x n ]. Then the formula:
- the tap coefficient generating means 133 can also iteratively process the previous set of tap coefficients by other algorithms to generate The current tap coefficient group is no longer listed in J3 ⁇ 4.
- the filtering processing device 131 performs filtering processing on the current data block according to the current tap coefficient group, generates a current first output data block, outputs the current first output data block to the forward error correction decoder 14, and outputs the current first output data.
- the block is output to the difference generating means 132.
- the forward error correction decoder 14 performs forward error correction decoding processing on the current first output data block to generate a current second output data block.
- the forward error correction decoder 14 outputs the current second output data block, and outputs the current second output data block to the difference generating means 132 for the difference generating means 132 to filter the current second output data block and
- the current first output data block output by the processing device 131 performs subtraction processing to generate a next difference value.
- error correction processing is performed on the error.
- the structure of the filter processing device 131 can be seen in Figure 4b.
- 4b is a schematic structural diagram of a filter processing apparatus according to an embodiment of the present invention.
- the filter processing apparatus 131 includes a plurality of delay modules 1311, a plurality of multipliers 1312, and a plurality of adders 1313.
- n delay modules 1311, a multiplier 1312, and an adder 1313 are taken as an example.
- the current tap coefficient group output by the tap coefficient generating means 133 includes n current tap coefficients h m+ to h m+1 n , and outputs each current tap coefficient to the corresponding multiplier 1312.
- the multiplier 1312 compares the current data block with the current tap system The number hi is multiplied to obtain a multiplied result, and the multiplied result is output to the adder 1313.
- Each delay module 1311 performs delay processing on the current data block, and outputs the delayed current data block to the multiplier 1312 connected to the delay module 1311, and the multiplier 1312 compares the delayed current data block with the received tap. The coefficients are multiplied to obtain a multiplied result, and the multiplied result is output to the adder 1313.
- Each adder 1313 adds the received multiplication results to finally obtain the current first output data block.
- the filter processing means 131 performs vector multiplication on the current input vector formed by the current data block X (n) according to the vector H (m) characterizing the current set of tap coefficients to obtain a current output value Y(n), and the current output value is formed.
- the current first output data block is obtained by vector transposition of the vector H(m) characterizing the current set of tap coefficients, for example: When H(m) is a row vector, H(m) is a column vector.
- the filter processing device 131 multiplies the vector after the transposition with the current input vector formed by the current data block input to the filter processing device 131. Generate the current first output data block.
- the receiver can also filter the current data block by other means to generate the current first output data block, which is no longer listed here.
- the length of the current data block includes 100 bits to 100000 bits
- the length of the previous data block includes 100 bits to 100000 bits
- the current data block includes a current FEC overhead and current data corresponding to the current FEC overhead
- the previous data block includes a previous FEC overhead and a previous data corresponding to the previous FEC overhead
- the receiver provided in this embodiment can be used to implement the data processing method provided in Embodiment 2 above.
- the receiver provided in this embodiment performs an iterative update process on the previous tap coefficient group to generate a current tap coefficient group according to the current difference value generated by subtracting the previous second output data block from the previous first output data block. And filtering the current data block according to the current tap coefficient group to generate a current first output data block, and performing forward error correction decoding processing on the current first output data block to generate a current second output data block.
- the receiver in this embodiment can count the previous number of current data blocks.
- the receiver Since the prior art calculates the difference according to the training sequence in the data block, and the receiver performs equalization processing on the data block according to the calculated difference, if the receiver cannot correctly obtain the training sequence from the data block, the accurate calculation cannot be performed.
- the difference is calculated, thereby reducing the processing performance of the receiver on the data block.
- the receiver uses the last second output data block subjected to error correction processing to generate the current difference, thereby ensuring the accuracy of the generated difference, thereby improving the processing performance of the receiver on the data block.
- the codeword of the data block is a short codeword, which avoids the problem that the data block that the burst error occurs in the continuous data block cannot be used to generate the difference, and improves the iterative efficiency of the receiver on the tap coefficient. , thereby improving the receiver's ability to perform equalization processing on the data block, and improving the quality of the data block output after the equalization processing.
- FIG. 5 is a schematic structural diagram of a data processing system according to Embodiment 5 of the present invention. As shown in FIG. 5, the system includes: a receiver 1 and a transmitter 2.
- Transmitter 2 is used to transmit the current optical data signal.
- the receiver 1 may be the receiver in the third embodiment or the fourth embodiment, and details are not described herein again.
- the receiver in the data processing system provided in this embodiment performs equalization processing on the current data block according to the previous second output data block, performs forward error correction decoding processing on the current first output data block, and generates a current second. Output data block.
- the receiver may perform equalization processing and forward error correction decoding processing on the previous data block of the current data block to generate a previous second output data block, and perform current data block on the current data block according to the previous second output data block.
- the equalization processing eliminates the need for the training sequence to equalize the data blocks, so there is no need to add training sequences to the data blocks, thereby improving the data transmission efficiency.
- the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiment; and the foregoing storage medium includes: R0M, RAM , a variety of media that can store program code, such as a disk or an optical disk.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Description
数据处理方法、 系统和接收机 技术领域
本发明实施例涉及光通信领域, 特别涉及一种数据处理方法、 系统和接 收机。 背景技术
随着单波长传输速率的增加, 光数据信号在光纤传输过程中的失真会影 响高速光传输系统的性能。为解决光数据信号在光纤传输过程中的失真问题, 通常采用基于电域处理的失真补偿技术对光数据信号进行处理。 失真补偿技 术是对光数据信号进行处理形成数据块并由均衡器对数据块进行均衡处理。 均衡器可以有效补偿光数据信号在传输过程中的各种失真效应, 例如: 色散 或者偏振模色散等。
现有技术中, 均衡器通常是基于训练序列 (Tra ining Sequence )对数据 块进行均衡处理, 这需要发射端在数据块中插入训练序列。 接收端在接收到 发射端发送的光数据信号后, 将光数据信号转换为数据块, 需要通过对数据 块进行相关性处理寻找间插在数据块中的训练序列, 然后由均衡器根据在数 据块中寻找到的训练序列得出抽头系数组, 根据抽头系数组对数据块进行均 衡处理。
但是, 现有技术的方案中, 需要在数据块中插入训练序列才能实现对数 据块的均衡处理。 在数据块中插入训练序列会降低数据传输的效率。 发明内容
本发明实施例提供一种数据处理方法、 系统和接收机, 用以提高数据的 传输效率。
本发明实施例提供了一种数据处理方法, 包括:
对接收到的当前光数据信号进行光电转换处理, 生成当前电数据信号; 对当前电数据信号进行模数转换处理, 生成当前数据块;
根据上一个第二输出数据块对所述当前数据块进行均衡处理, 生成当前 第一输出数据块, 所述上一个第二输出数据块是对上一个第一输出数据块进 行前向纠错译码处理生成的, 所述上一个第一输出数据块是对所述当前数据 块的上一个数据块进行均衡处理生成的;
对所述当前第一输出数据块进行前向纠错译码处理,生成当前第二输出 数据块。
本发明实施例提供了一种接收机, 包括: 光电转换器、 模数转换器、 均 衡器和前向纠错译码器;
所述光电转换器, 用于对接收到的当前光数据信号进行光电转换处理, 生成当前电数据信号;
所述模数转换器, 用于对当前电数据信号进行模数转换处理, 生成当前 数据块;
所述均衡器, 用于根据所述前向纠错译码器输出的上一个第二输出数据 块对当前数据块进行均衡处理, 生成当前第一输出数据块, 所述上一个第二 输出数据块是由所述前向译码纠错器对上一个第一输出数据块进行前向纠错 译码处理生成的, 所述上一个第一输出数据块是由所述均衡器对所述当前数 据块的上一个数据块进行均衡处理生成的;
所述前向纠错译码器, 用于对所述当前第一输出数据块进行前向纠错译 码处理, 生成当前第二输出数据块。
本发明实施例提供了一种数据处理系统, 包括: 发射机和上述接收机; 所述发射机, 用于发送当前光数据信号。
本实施例提供的数据处理方法、 系统和接收机, 根据上一个第二输出数 据块对当前数据块进行均衡处理, 对所述当前第一输出数据块进行译码纠错 处理, 生成当前第二输出数据块。 本实施例中可对当前数据块的上一个数据
块进行均衡处理和译码纠错处理生成上一个第二输出数据块, 并根据上一个 第二输出数据块对当前数据块进行均衡处理, 无需采用训练序列对数据块进 行均衡处理, 因此无需在数据块中增加训练序列, 从而提高了数据的传输效 率。 具体实施方式
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作一简单地介绍, 显而易见地, 下 面描述中的附图是本发明的一些实施例, 对于本领域普通技术人员来讲, 在 不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例一提供的一种数据处理方法的流程图;
图 2a为本发明实施例二提供的一种数据处理方法的流程图;
图 2b为本发明实施例中数据块的结构示意图;
图 2c为本发明实施例中长码字的数据块中出现突发误码的示意图; 图 2d为本发明实施例中短码字的数据块中出现突发误码的示意图; 图 3为本发明实施例三提供的一种接收机的结构示意图;
图 4a为本发明实施例四提供的一种接收机的结构示意图;
图 4b为本发明实施例中滤波处理装置的结构示意图;
图 5为本发明实施例五提供的一种数据处理系统的结构示意图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发 明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于 本发明中的实施例, 本领域普通技术人员在没有作出创造性劳动前提下所获 得的所有其他实施例, 都属于本发明保护的范围。
图 1为本发明实施例一提供的一种数据处理方法的流程图,如图 1所示, 该方法包括:
步骤 101、 对接收到的当前光数据信号进行光电转换处理, 生成当前电 数据信号。
本实施例中各步骤可以由接收机执行。 本实施例中, 接收机可以接收发 射机发送的当前光数据信号, 并对接收到的当前光数据信号进行光电转换处 理, 生成当前电数据信号。 本实施例中, 对当前光数据信号进行光电转换处 理具体可以为: 对当前光数据信号进行基于相干检测的光电转换处理。
本发明实施例中, 发射机发送的当前光数据信号中包括前向纠错编码 ( Forward Error Code , 以下简称: FEC )开销。
步骤 102、 对当前电数据信号进行模数转换处理, 生成当前数据块。 步骤 103、 根据上一个第二输出数据块对当前数据块进行均衡处理, 生 成当前第一输出数据块, 该上一个第二输出数据块是对上一个第一输出数据 块进行前向纠错译码处理生成的, 该上一个第一输出数据块是对当前数据块 的上一个数据块进行均衡处理生成的。
本实施例中, 接收机对当前数据块的上一个数据块进行均衡处理生成上 一个第一输出数据块, 对上一个第一输出数据块进行前向纠错译码处理生成 上一个第二输出数据块, 并根据上一个第二输出数据块对当前数据块进行均 衡处理生成当前第一输出数据块。
步骤 104、 对当前第一输出数据块进行前向纠错译码处理, 生成当前第 二输出数据块。
本实施例提供的数据处理方法, 根据上一个第二输出数据块对当前数据 块进行均衡处理, 对该当前第一输出数据块进行前向纠错译码处理, 生成当 前第二输出数据块。 本实施例中可对当前数据块的上一个数据块进行均衡处 理和前向纠错译码处理生成上一个第二输出数据块, 并根据上一个第二输出 数据块对当前数据块进行均衡处理, 无需采用训练序列对数据块进行均衡处
理, 因此无需在数据块中增加训练序列, 从而提高了数据的传输效率。
图 2a为本发明实施例二提供的一种数据处理方法的流程图, 如图 2a所 示, 该方法包括:
步骤 201、 接收机接收发射机发送的当前光数据信号, 对当前光数据信 号进行光电转换处理, 生成当前电数据信号。
步骤 202、 接收机对当前电数据信号进行模数转换处理, 生成当前数据 块。
本实施例中, 数据块的结构可参见图 2b , 图 2b为本发明实施例中数据 块的结构示意图。 如图 2b所示, 图 2b示出了 n个连续的数据块, 即数据块 1、 数据块 2 数据块 n。 每个数据块包括 FEC开销和与该 FEC开销对 应的数据(da ta ) 。 当前数据块可以为任意一个数据块, 例如: 若当前数据 块为数据块 2时, 则当前数据块的上一个数据块为数据块 1。 则本实施例中, 当前数据块包括当前 FEC开销和与该当前 FEC开销对应的当前数据, 上一个 数据块包括上一个 FEC开销和与上一个 FEC开销对应的上一个数据。
步骤 203、 接收机将上一个第二输出数据块与上一个第一输出数据块进 行相减处理, 生成当前差值, 上一个第二输出数据块是由接收机对上一个第 一输出数据块进行前向纠错译码处理生成的, 上一个第一输出数据块是由接 收机对当前数据块的上一个数据块进行均衡处理生成的。
本实施例中, 接收机对当前数据块的上一个数据块进行均衡处理生成上 一个第一输出数据块。 接收机对上一个第一输出数据块进行前向纠错译码处 理生成上一个第二输出数据块。
步骤 204、 接收机根据当前差值对上一个抽头系数组进行迭代处理, 生 成当前抽头系数组。
抽头系数组可用于对数据块进行滤波处理。 则本实施例中, 上一个抽头 系数组和当前抽头系数组均可用于进行滤波处理。
具体地, 接收机可根据当前差值对上一个抽头系数组中的每个抽头系数
进行迭代处理, 生成当前抽头系数组中的每个抽头系数。
接收机可通过最小均方 (Least Mean Square, 以下简称: LMS ) 算法对 上一个抽头系数组进行迭代处理, 生成当前抽头系数组。
例如: 接收机根据公式: H (m+1) = H (m) +u*X (n) * error (m)对上一个抽头 系数组 H(m)进行迭代处理, 生成当前抽头系数组 H (m+1)。 其中, u为步长因 子, u 可以为预先定义的常数; X(n)为进行均衡处理的当前输入向量, 该当 前输入向量由当前数据块所形成; error (m)为当前差值, m为正整数, n为正 整数。
具体地, H(m+1)可以表示为 [hm+ , hm+1 2 ...hm+1 n] , H(m)可以表示为 ΠΛ, h \ ...hmJ , 其中, hm+1 n为当前抽头系数组中的抽头系数, hm n为上一个抽头系 数组中的抽头系数。 X(n)可表示为 [Xl x2... xn]。 则公式: H(m+1) = H (m) +u*X (n) * error (m)还可 ^示力 [hm+ h m+1 2 ... h m+1 n] = [hmi h m 2 -.. h m n] +u* [xi x2... xn] *error (m)。
在实际应用中, 接收机还可以通过其它算法对上一个抽头系数组进行迭 代处理, 生成当前抽头系数组, 此处不再——列举。
步骤 205、 接收机根据当前抽头系数组对当前数据块进行滤波处理, 生 成当前第一输出数据块。
本实施例中, 接收机可通过公式: Y(n) =H (m) ' * X(n) , 对当前数据块 进行滤波处理。 H(m)为表征当前抽头系数组的向量, X(n)为由当前数据块所 形成的当前输入向量, Y (n)为根据上述公式进行滤波处理得到的当前输出 值, 该当前输出值形成当前第一输出数据块。 其中, H(m), 为对 H(m)进行向 量转置得到的, 例如: 当 H(m)为行向量时, H(m), 为列向量。
具体地, 接收机对表征当前抽头系数组的向量进行向量转置, 并将转置 后的向量与由当前数据块形成的当前输入向量进行向量相乘, 生成当前第一 输出数据块。
在实际应用中,接收机还可以通过其它方式对当前数据块进行滤波处理,
生成当前第一输出数据块, 此处不再——列举。
步骤 206、 接收机对当前第一输出数据块进行前向纠错译码处理, 生成 当前第二输出数据块。
在接收机对当前第一输出数据块进行前向纠错译码处理的过程中, 若查 询出当前第一输出数据块包括误码, 则对误码进行纠错处理。
步骤 207、 接收机输出当前第二输出数据块。
本实施例中, 各步骤的执行顺序仅为一种示例, 在实际应用中可根据需 要对上述各步骤的执行顺序进行变更。
本实施例的步骤 206中,若接收机查询出当前第一输出数据块包括误码, 且当前第一输出数据块中的误码为突发误码(Bur s t Error ) 时, 表明接收机 无法对该当前第一输出数据块进行纠错处理, 则接收机在对当前第一输出数 据块进行前向纠错译码处理过程中, 不对当前第一输出数据块中的误码进行 纠错处理。 并且接收机不再将该当前第二输出数据块用于与当前第一输出数 据块进行相减处理生成下一个差值的步骤。
当信道发生变化时, 由信道变化导致的突发误码(Bur s t Error )会出现 在数据块中。 若数据块中出现突发误码时, 该数据块将不能用于差值的生成 过程, 这样将导致接收机无法对抽头系数进行迭代处理。 当数据块的码字为 长码字时, 例如该数据块的长度大于 100000比特时, 突发误码容易出现在连 续多个数据块中。 当连续多个数据块中出现突发误码时, 该连续多个数据块 均不能用于差值的生成, 将导致接收机对抽头系数组的迭代效率降低, 从而 降低接收机对数据块进行均衡处理的能力。图 2c为本发明实施例中长码字的 数据块中出现突发误码的示意图, 如图 2c所示, 当信道发生变化时, 突发误 码出现在数据块 1和数据块 2中。 本实施例中, 若上一个数据块为数据块 1, 则当前数据块为数据块 2。 上一个数据块和当前数据块中均出现突发误码, 则生成的上一个第二输出数据块和当前第二输出数据块也包括突发误码, 使 上一个第二输出数据块不能用于当前差值的生成, 当前第二输出数据块也不
能用于下一个差值的生成, 从而使接收机无法对抽头系数组进行迭代处理, 降低了对抽头系数组的迭代效率。
进一步地, 为了提高接收机对抽头系数组的迭代效率, 本发明实施例中 数据块的码字为短码字, 例如: 数据块的长度包括 100比特至 100000比特。 本实施例中, 当前数据块的长度包括 100比特至 100000比特, 上一个数据块 的长度包括 100比特至 100000比特。 图 2d为本发明实施例中短码字的数据 块中出现突发误码的示意图, 如图 2d所示, 由于数据块的码字为短码字, 因 此当信道发生变化时, 突发误码出现在数据块 1和数据块 3中, 避免了突发 误码出现在连续的数据块中, 提高了接收机对抽头系数组的迭代效率, 从而 提高了接收机对数据块进行均衡处理的能力, 提高了均衡处理后输出的数据 块的质量。
本实施例提供的数据处理方法中, 接收机根据由上一个第二输出数据块 与上一个第一输出数据块进行相减处理生成的当前差值, 对上一个抽头系数 组进行更新处理生成当前抽头系数, 根据当前抽头系数组对当前数据块进行 迭代处理生成当前第一输出数据块, 并对当前第一输出数据块进行前向纠错 译码处理, 生成当前第二输出数据块。 本实施例中可对当前数据块的上一个 数据块进行均衡处理和前向纠错译码处理生成上一个第二输出数据块, 并根 据上一个第二输出数据块和上一个第一输出数据块生成当前差值, 以供接收 机根据当前差值对当前数据块进行均衡处理, 无需采用训练序列对当前数据 块进行均衡处理, 因此无需在数据块中增加训练序列, 从而提高了数据的传 输效率。
由于无需在数据块中增加训练序列, 使发射端无需设置训练序列插入设 备, 从而降低了成本。
由于现有技术是根据数据块中的训练序列计算差值, 以供接收机根据计 算出的差值对数据块进行均衡处理, 因此若接收机不能从数据块中正确获得 训练序列便无法准确计算出差值, 从而降低了接收机对数据块的处理性能。
而本实施例中接收机采用经过前向纠错译码处理的上一个第二输出数据块生 成当前差值, 保证了生成的差值的准确性, 从而提高了接收机对数据块的处 理性能。
本实施例中数据块的码字为短码字, 避免了突发误码出现在连续的数据 块中导致的数据块不能用于生成差值的问题, 提高了接收机对抽头系数组的 迭代效率, 从而提高了接收机对数据块进行均衡处理的能力, 提高了均衡处 理后输出的数据块的质量。
图 3为本发明实施例三提供的一种接收机的结构示意图, 如图 3所示, 该接收机包括: 光电转换器 11、 模数转换器 12、 均衡器 1 3和前向纠错译码 器 14。
光电转换器 11对接收到的当前光数据信号进行光电转换处理,生成当前 电数据信号。
模数转换器 12对当前电数据信号进行模数转换处理, 生成当前数据块。 均衡器 1 3根据前向纠错译码器 14输出的上一个第二输出数据块对当前 数据块进行均衡处理, 生成当前第一输出数据块。 该上一个第二输出数据块 是由前向纠错译码器 14 对上一个第一输出数据块进行前向纠错译码处理生 成的,该上一个第一输出数据块是由均衡器 1 3对当前数据块的上一个数据块 进行均衡处理生成的。
前向纠错译码器 14对当前第一输出数据块进行前向纠错译码处理,生成 当前第二输出数据块。
本实施例提供的接收机可用于实现上述实施例一提供的数据处理方法。 本实施例提供的接收机可根据上一个第二输出数据块对当前数据块进行 均衡处理, 对当前第一输出数据块进行前向纠错译码处理, 生成当前第二输 出数据块。 本实施例中可对当前数据块的上一个数据块进行均衡处理和前向 纠错译码处理生成上一个第二输出数据块, 并根据上一个第二输出数据块对 当前数据块进行均衡处理, 无需采用训练序列对数据块进行均衡处理, 因此
无需在数据块中增加训练序列开销, 从而提高了数据的传输效率。 图 4a为本发明实施例四提供的一种接收机的结构示意图,如图 4a所示, 该接收机包括: 光电转换器 11、 模数转换器 12、 均衡器 13和前向纠错译码 器 14。 其中, 均衡器 13包括滤波处理装置 131、 差值生成装置 132和抽头系 数生成装置 133。
光电转换器 11对接收到的当前光数据信号进行光电转换处理,生成当前 电数据信号, 并将当前电数据信号输出给模数转换器 12。
模数转换器 12对当前电数据信号进行模数转换处理, 生成当前数据块, 并将当前数据块输出给滤波处理装置 131。
前向纠错译码器 14对滤波处理装置 131输出的上一个第一输出数据块进 行前向纠错译码处理生成上一个第二输出数据块, 输出上一个第二输出数据 块, 并将上一个第二输出数据块输出给差值生成装置 132。 其中, 上一个第 一输出数据块是滤波处理装置 131根据差值生成装置 132生成的上一个抽头 系数组对当前数据块的上一个数据块进行滤波处理生成。 具体地, 滤波处理 装置 131在根据上一个抽头系数组对上一个数据块进行滤波处理生成上一个 第一输出数据块后, 将上一个第一输出数据块输出给前向纠错译码器 14, 并 将上一个第一输出数据块输出给差值生成装置 132。 进一步地, 为使上一个 第一输出数据块与上一个第二输出数据块同时到达差值生成装置 132, 可以 在均衡器 13中设置分别与滤波处理装置 131和差值生成装置 132连接的延迟 装置 134。 延迟装置 134接收滤波处理装置 131输出的上一个第一输出数据 块, 并将该上一个第一输出数据块延迟发送给差值生成装置 132。
差值生成装置 132将上一个第二输出数据块与上一个第一输出数据块进 行相减处理, 生成当前差值, 并将当前差值输出给抽头系数生成装置 133。
抽头系数生成装置 133 根据当前差值对上一个抽头系数组进行迭代处 理, 生成当前抽头系数组, 并将当前抽头系数组输出给滤波处理装置 131。 抽头系数生成装置 133可以根据公式: H (m+1) = H (m) +u*X (n) * error (m)对上
一个抽头系数组 H (m)进行迭代处理, 生成当前抽头系数组 H (m+1)。 其中, u 为步长因子, u 可以为预先定义的常数; X(n)为进行均衡处理的当前输入向 量, 该当前输入向量由当前数据块所形成; error (m)为当前差值, m 为正整 数, n为正整数。 具体地, H(m+1)可以表示为 [IT^ h m+1 2 〜hm+1 n] , H(m)可以 表示为 ΠΛ, hm 2 ...hmJ , 其中, hm+1 n为当前抽头系数组中的抽头系数, hm n为 上一个抽头系数组中的抽头系数。 (1)可表示为 [ 1 2... xn]。 则公式:
H(m+1)= H(m)+u*X(n)* error (m)还可表示为 ΠΓ hm+1 2 ...hm+1 n]= [1 hm 2 ... hm n]+u*[Xl x2... xn] *error (m) 0 在实际应用中, 抽头系数生成装置 133还可 以通过其它算法对上一个抽头系数组进行迭代处理, 生成当前抽头系数组, J¾处不再 列举。
滤波处理装置 131根据当前抽头系数组对当前数据块进行滤波处理, 生 成当前第一输出数据块, 将当前第一输出数据块输出给前向纠错译码器 14, 以及将当前第一输出数据块输出给差值生成装置 132。
前向纠错译码器 14对当前第一输出数据块进行前向纠错译码处理,生成 当前第二输出数据块。 前向纠错译码器 14输出当前第二输出数据块, 并将该 当前第二输出数据块输出给差值生成装置 132, 以供差值生成装置 132将该 当前第二输出数据块和滤波处理装置 131输出的当前第一输出数据块进行相 减处理, 生成下一个差值。 在前向纠错译码器 14对当前第一输出数据块进行 前向纠错译码处理的过程中, 若查询出当前第一输出数据块包括误码, 则对 误码进行纠错处理。
本实施例中, 滤波处理装置 131的结构可参见图 4b。 图 4b为本发明实 施例中滤波处理装置的结构示意图, 如图 4b所示, 滤波处理装置 131包括多 个延迟模块 1311、 多个乘法器 1312和多个加法器 1313。 本实施例中, 以 n 个延迟模块 1311、 乘法器 1312和加法器 1313为例。 抽头系数生成装置 133 输出的当前抽头系数组包括 n个当前抽头系数 hm+ 至 h m+1 n, 并将每个当前抽 头系数输出给对应的乘法器 1312。 乘法器 1312将当前数据块与当前抽头系
数 hi相乘得出相乘结果, 并将相乘结果输出给加法器 1313。 每个延迟模块 1311对当前数据块进行延迟处理, 并将经过延迟处理的当前数据块输出给与 延迟模块 1311连接的乘法器 1312, 乘法器 1312将经过延迟处理的当前数据 块与接收到的抽头系数相乘, 得出相乘结果, 并将相乘结果输出给加法器 1313。 每个加法器 1313将接收到的相乘结果相加, 最终得出当前第一输出数 据块。 例如: 上述过程可通过公式: Y(n) =H (m) ' * X(n)表示。 滤波处理装 置 131根据表征当前抽头系数组的向量 H (m)对由当前数据块 X (n)所形成的当 前输入向量进行向量相乘, 得到当前输出值 Y(n) , 该当前输出值形成当前第 一输出数据块。 其中, H(m), 为对表征当前抽头系数组的向量 H(m)进行向量 转置后得到的, 例如: 当 H(m)为行向量时, H(m), 为列向量。 具体地, 滤波 处理装置 131对表征当前抽头系数组的向量进行向量转置后, 用转置后的向 量与由输入到滤波处理装置 131 的当前数据块所形成的当前输入向量进行向 量相乘, 生成当前第一输出数据块。 在实际应用中, 接收机还可以通过其它 方式对当前数据块进行滤波处理, 生成当前第一输出数据块, 此处不再—— 列举。
本实施例中, 当前数据块的长度包括 100比特至 100000比特, 上一数据 块的长度包括 100比特至 100000比特。
本实施例中, 当前数据块包括当前 FEC开销和与该当前 FEC开销对应的 当前数据, 上一个数据块包括上一个 FEC开销和与上一个 FEC开销对应的上 一个数据。 具体可参见实施例二中的描述, 此处不再贅述。
本实施例提供的接收机可用于实现上述实施例二提供的数据处理方法。 本实施例提供的接收机根据由上一个第二输出数据块与上一个第一输出 数据块进行相减处理生成的当前差值, 对上一个抽头系数组进行迭代更新处 理生成当前抽头系数组, 根据当前抽头系数组对当前数据块进行滤波处理生 成当前第一输出数据块, 并对当前第一输出数据块进行前向纠错译码处理, 生成当前第二输出数据块。 本实施例中的接收机可对当前数据块的上一个数
据块进行均衡处理和前向纠错译码处理生成上一个第二输出数据块, 并根据 上一个第二输出数据块和上一个第一输出数据块生成当前差值, 以供接收机 根据当前差值对当前数据块进行均衡处理, 无需采用训练序列对当前数据块 进行均衡处理, 因此无需在数据块中增加训练序列, 从而提高了数据的传输 效率。 由于无需在数据块中增加训练序列, 使发射端无需设置训练序列插入 设备, 从而降低了成本。 由于现有技术是根据数据块中的训练序列计算差值, 以供接收机根据计算出的差值对数据块进行均衡处理, 因此若接收机不能从 数据块中正确获得训练序列便无法准确计算出差值, 从而降低了接收机对数 据块的处理性能。 而本实施例中接收机采用经过纠错处理的上一个第二输出 数据块生成当前差值, 保证了生成的差值的准确性, 从而提高了接收机对数 据块的处理性能。 本实施例中数据块的码字为短码字, 避免了突发误码出现 在连续的数据块中导致的数据块不能用于生成差值的问题, 提高了接收机对 抽头系数的迭代效率, 从而提高了接收机对数据块进行均衡处理的能力, 提 高了均衡处理后输出的数据块的质量。
图 5为本发明实施例五提供的一种数据处理系统的结构示意图, 如图 5 所示, 该系统包括: 接收机 1和发射机 2。
发射机 2用于发送当前光数据信号。
接收机 1可采用上述实施例三或者实施例四中的接收机,此处不再贅述。 本实施例提供的数据处理系统中的接收机根据上一个第二输出数据块对 当前数据块进行均衡处理, 对所述当前第一输出数据块进行前向纠错译码处 理, 生成当前第二输出数据块。 本实施例中接收机可对当前数据块的上一个 数据块进行均衡处理和前向纠错译码处理生成上一个第二输出数据块, 并根 据上一个第二输出数据块对当前数据块进行均衡处理, 无需采用训练序列对 数据块进行均衡处理, 因此无需在数据块中增加训练序列, 从而提高了数据 的传输效率。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤
可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: R0M、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其 限制; 尽管参照前述实施例对本发明进行了详细的说明, 本领域的普通技术 人员应当理解: 其依然可以对前述各实施例所记载的技术方案进行修改, 或 者对其中部分技术特征进行等同替换; 而这些修改或者替换, 并不使相应技 术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims
1、 一种数据处理方法, 其特征在于, 包括:
对接收到的当前光数据信号进行光电转换处理, 生成当前电数据信号; 对所述当前电数据信号进行模数转换处理, 生成当前数据块;
根据上一个第二输出数据块对所述当前数据块进行均衡处理, 生成当前 第一输出数据块, 所述上一个第二输出数据块是对上一个第一输出数据块进 行前向纠错译码处理生成的, 所述上一个第一输出数据块是对所述当前数据 块的上一个数据块进行均衡处理生成的;
对所述当前第一输出数据块进行前向纠错译码处理, 生成当前第二输出 数据块。
2、 根据权利要求 1所述的方法, 其特征在于, 所述根据上一个第二输出 数据块对所述当前数据块进行均衡处理, 生成当前第一输出数据块包括: 将所述上一个第二输出数据块与所述上一个第一输出数据块进行相减处 理, 生成当前差值;
根据所述当前差值对用于滤波处理的上一个抽头系数组进行迭代处理, 生成用于滤波处理的当前抽头系数组;
根据所述当前抽头系数组对所述当前数据块进行滤波处理, 生成所述当 前第一输出数据块。
3、 根据权利要求 1或 2所述的方法, 其特征在于, 所述当前数据块的长 度包括 100比特至 100000比特, 所述上一个数据块的长度包括 100比特至
100000比特。
4、 根据权利要求 1或 2所述的方法, 其特征在于, 所述当前数据块包括 包括当前前向纠错编码 FEC开销和与所述当前 FEC开销对应的当前数据, 上 一个数据块包括上一个 FEC开销和与所述上一个 FEC开销对应的上一个数据。
5、 一种接收机, 其特征在于, 包括: 光电转换器、 模数转换器、 均衡器 和前向纠错译码器; 所述光电转换器, 用于对接收到的当前光数据信号进行光电转换处理, 生成当前电数据信号;
所述模数转换器, 用于对所述当前电数据信号进行模数转换处理, 生成 当前数据块;
所述均衡器, 用于根据所述前向纠错译码器输出的上一个第二输出数据 块对所述当前数据块进行均衡处理, 生成当前第一输出数据块, 所述上一个 第二输出数据块是由所述前向译码纠错器对上一个第一输出数据块进行前向 纠错译码处理生成的, 所述上一个第一输出数据块是由所述均衡器对所述当 前数据块的上一个数据块进行均衡处理生成的;
所述前向纠错译码器, 用于对所述当前第一输出数据块进行前向纠错译 码处理, 生成当前第二输出数据块。
6、 根据权利要求 5所述的接收机, 其特征在于, 所述均衡器包括滤波处 理装置、 差值生成装置和抽头系数生成装置;
所述差值生成装置, 用于将所述前向错译码器输出的上一个第二输出数 据块与所述滤波处理装置输出的上一个第一输出数据块进行相减处理, 生成 当前差值, 并将所述当前差值输出给所述抽头系数生成装置, 其中, 所述上 一个第一输出数据块是由所述滤波处理装置根据所述差值生成装置生成的上 一个抽头系数组对所述当前数据块的上一个数据块进行滤波处理生成的; 所述抽头系数生成装置, 用于根据所述当前差值对上一个抽头系数组进 行迭代处理, 生成当前抽头系数组, 并将所述当前抽头系数组输出给所述迭 代处理装置;
所述滤波处理装置, 用于根据所述当前抽头系数组对当前数据块进行滤 波处理, 生成当前第一输出数据块, 将所述当前第一输出数据块输出给所述 前向纠错译码器,以及将所述当前第一输出数据块输出给所述差值生成装置。
7、 根据权利要求 6所述的接收机, 其特征在于, 所述均衡器还包括: 延迟装置, 用于接收所述滤波处理装置输出的上一个第一输出数据块, 并将所述上一个第一输出数据块延迟发送给所述差值生成装置。
8、 根据权利要求 5至 7任一所述的接收机, 其特征在于, 所述当前数据 块的长度包括 1 00比特至 1 00000比特,所述上一个数据块的长度包括 1 00比 特至 1 00000比特。
9、 根据权利要求 5至 7任一所述的接收机, 其特征在于, 所述当前数据 块包括当前前向纠错编码 FEC开销和与所述当前 FEC开销对应的当前数据, 上一个数据块包括上一个 FEC开销和与所述上一个 FEC开销对应的上一个数 据。
1 0、 一种数据处理系统, 其特征在于, 包括: 发射机和接收机; 所述发射机, 用于发送当前光数据信号;
所述接收机包括如权利要求 5至 9任一所述的接收机。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201080014464.8A CN102301607B (zh) | 2010-03-29 | 2010-03-29 | 数据处理方法、系统和接收机 |
PCT/CN2010/071389 WO2011120215A1 (zh) | 2010-03-29 | 2010-03-29 | 数据处理方法、系统和接收机 |
EP10848676A EP2544376A4 (en) | 2010-03-29 | 2010-03-29 | METHOD OF PROCESSING DATA, SYSTEM AND RECEIVER |
US13/627,768 US20130024741A1 (en) | 2010-03-29 | 2012-09-26 | Data processing method, data processing system, and receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2010/071389 WO2011120215A1 (zh) | 2010-03-29 | 2010-03-29 | 数据处理方法、系统和接收机 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/627,768 Continuation US20130024741A1 (en) | 2010-03-29 | 2012-09-26 | Data processing method, data processing system, and receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011120215A1 true WO2011120215A1 (zh) | 2011-10-06 |
Family
ID=44711298
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2010/071389 WO2011120215A1 (zh) | 2010-03-29 | 2010-03-29 | 数据处理方法、系统和接收机 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20130024741A1 (zh) |
EP (1) | EP2544376A4 (zh) |
CN (1) | CN102301607B (zh) |
WO (1) | WO2011120215A1 (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105491538A (zh) * | 2015-12-18 | 2016-04-13 | 海能达通信股份有限公司 | 一种群组数据的处理方法和基站以及终端 |
CN116171438A (zh) * | 2020-06-29 | 2023-05-26 | 光物质公司 | 快速预测处理器 |
CN115550116B (zh) * | 2022-11-30 | 2023-03-24 | 高澈科技(上海)有限公司 | 一种发送端及接收端的前馈均衡器抽头系数联合优化系统 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050008070A1 (en) * | 2001-09-11 | 2005-01-13 | Big Bear Networks, Inc. | Method and apparatus for improved high-speed FEC adaptive equalization |
US20050169406A1 (en) * | 2004-01-30 | 2005-08-04 | Alcatel | Receiver for optical or electromagnetic signals with iterative equalization and error correction plus a method for improving the exactness in relating binary data to a digitalized -data transmitting, analog electromagnetic or optical-electrical signal |
CN1681227A (zh) * | 2004-04-06 | 2005-10-12 | 华为技术有限公司 | 光时域反射仪的光模块及光时域反射仪以及光纤测试方法 |
CN1956362A (zh) * | 2005-10-27 | 2007-05-02 | 阿尔卡特公司 | 偏振加扰光信号的自适应均衡 |
CN101275827A (zh) * | 2007-03-27 | 2008-10-01 | 汉达精密电子(昆山)有限公司 | 光学检测系统及光学检测方法 |
CN101383800A (zh) * | 2004-12-17 | 2009-03-11 | 三星电子株式会社 | 数字多媒体接收机及其数字多媒体接收方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1589685B1 (fr) * | 2004-04-22 | 2008-09-10 | France Telecom | Egalisation chip et détection multiutilisateur disjointes iteratives pour systèmes de communications CDMA sur canal MIMO |
KR100707339B1 (ko) * | 2004-12-23 | 2007-04-13 | 권대훈 | 청력도 기반 이퀄라이제이션 방법 및 장치 |
-
2010
- 2010-03-29 CN CN201080014464.8A patent/CN102301607B/zh not_active Expired - Fee Related
- 2010-03-29 EP EP10848676A patent/EP2544376A4/en not_active Withdrawn
- 2010-03-29 WO PCT/CN2010/071389 patent/WO2011120215A1/zh active Application Filing
-
2012
- 2012-09-26 US US13/627,768 patent/US20130024741A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050008070A1 (en) * | 2001-09-11 | 2005-01-13 | Big Bear Networks, Inc. | Method and apparatus for improved high-speed FEC adaptive equalization |
US20050169406A1 (en) * | 2004-01-30 | 2005-08-04 | Alcatel | Receiver for optical or electromagnetic signals with iterative equalization and error correction plus a method for improving the exactness in relating binary data to a digitalized -data transmitting, analog electromagnetic or optical-electrical signal |
CN1681227A (zh) * | 2004-04-06 | 2005-10-12 | 华为技术有限公司 | 光时域反射仪的光模块及光时域反射仪以及光纤测试方法 |
CN101383800A (zh) * | 2004-12-17 | 2009-03-11 | 三星电子株式会社 | 数字多媒体接收机及其数字多媒体接收方法 |
CN1956362A (zh) * | 2005-10-27 | 2007-05-02 | 阿尔卡特公司 | 偏振加扰光信号的自适应均衡 |
CN101275827A (zh) * | 2007-03-27 | 2008-10-01 | 汉达精密电子(昆山)有限公司 | 光学检测系统及光学检测方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2544376A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN102301607A (zh) | 2011-12-28 |
CN102301607B (zh) | 2013-09-11 |
EP2544376A1 (en) | 2013-01-09 |
US20130024741A1 (en) | 2013-01-24 |
EP2544376A4 (en) | 2013-03-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10505638B2 (en) | High-speed receiver architecture | |
US8260156B2 (en) | Adaptive crossing frequency domain equalization (FDE) in digital PolMux coherent systems | |
US7257181B2 (en) | Method and apparatus for channel equalization | |
KR101775466B1 (ko) | 플라스틱 광섬유를 통한 기가 비트 이더넷용 2-레벨 코세트 코딩 방식 | |
US9819521B2 (en) | PAM data communication with reflection cancellation | |
US20090185613A1 (en) | High-Speed Receiver Architecture | |
EP1972054A2 (en) | High-speed receiver architecture | |
CN101106386A (zh) | 时域自适应均衡器 | |
JP2004166231A (ja) | 光通信システムにおいて受信信号を等化するための方法及びシステム | |
WO2015103804A1 (zh) | 基于lms的信道均衡和频偏估计联合并行方法 | |
JP2015510366A (ja) | 波長分散処理の装置及び方法 | |
US8208529B2 (en) | Equalization apparatus and method of compensating distorted signal and data receiving apparatus | |
JP7417743B2 (ja) | 周波数領域等化方法、等化器、光受信器、及びシステム | |
WO2011120215A1 (zh) | 数据处理方法、系统和接收机 | |
CN113796016B (zh) | 符号判定装置和符号判定方法 | |
JP2007067698A (ja) | 通信システムおよび送受信装置 | |
CN107534629B (zh) | 判决反馈均衡装置、方法及光传输系统 | |
WO2019142912A1 (ja) | シンボル判定装置及びシンボル判定方法 | |
KR20090056929A (ko) | 파형등화장치 | |
GB2429382A (en) | Distortion compensation equalizer | |
WO2016090562A1 (zh) | 一种设置均衡装置的方法及均衡装置 | |
JP2008219078A (ja) | 等化回路および歪軽減方法 | |
JP6058682B2 (ja) | デジタル信号処理装置 | |
JP2013165330A (ja) | 通信システム,通信システムの受信機および送信機,および,通信方法 | |
CN116722840A (zh) | 一种适用于相位调制格式的自适应均衡方法和装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080014464.8 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010848676 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10848676 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |