CN109474346A - A kind of optical signal generation method and device based on the forming of geometry-probability - Google Patents
A kind of optical signal generation method and device based on the forming of geometry-probability Download PDFInfo
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- CN109474346A CN109474346A CN201811400126.2A CN201811400126A CN109474346A CN 109474346 A CN109474346 A CN 109474346A CN 201811400126 A CN201811400126 A CN 201811400126A CN 109474346 A CN109474346 A CN 109474346A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
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- 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
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Abstract
The embodiment of the invention provides a kind of based on geometry-probability forming optical signal generation method and device, and method includes: to obtain initial data to be sent；According to the serial number of each planisphere subset, the corresponding subset sequence number sequence for obeying Optimal Distribution of initial data is determined, and according to the binary label of each planisphere subset, determine the binary sequence of the corresponding subset sequence number sequence for obeying Optimal Distribution of initial data；Planisphere subset is after obtaining multimode circle planisphere to the square constellations progress geometrical figuration of default constellation point number, to carry out what subset was divided to multimode circle planisphere；Systematic code coding is carried out to binary sequence, the information after being encoded；The first preset quantity information bit and the second preset quantity redundant bit are successively chosen for the information after coding, multimode circle planisphere is mapped to, obtains optical signals to be passed.The present embodiment can make transmitting optical signal approach shannon capacity.
Description
Technical field
The present invention relates to technical field of optical fiber communication, more particularly to a kind of raw based on geometry-probability forming optical signal
At method and device.
Background technique
Fiber optic communication is that using optical fiber as the communication mode of transmission medium, have carrier resource huge using laser as carrier wave, pass
It is defeated to decay the advantages that small, network data services can be provided for the growing information requirement of the mankind.
In fiber optic communication systems, traditional QAM (Quadrature Amplitude Modulation, quadrature amplitude tune
System) it is widely used, the hsrdware requirements of transmitter section can be effectively reduced.But just with uniform M-
Qam constellation is unable to reach shannon capacity, and especially in the lower situation of order of modulation, performance loss levels off to
π e/6 (1.53dB), i.e. shaping constellation gain.Therefore, it in order to be further able to approach shannon capacity, needs using constellation
Forming technique.
Shaping constellation be divided into geometrical figuration and probability forming, geometrical figuration technology be equally distributed signal is mapped to it is non-
In equidistant constellation point, probability forming technique is by the signaling point non-uniform Distribution in equidistant planisphere.It is real in known technology
The method of existing probability forming is roughly divided into three kinds, first is that the Huffman forming technique of probability forming is realized using huffman coding,
Second is that realizing that probability shapes using the method for probability amplitude forming, third is that in the way of shell mapping.However, being compiled using Huffman
Code needs the prefix of more spatial cache storage Huffman codes in hardware aspect；It can only using the method that probability amplitude shapes
This method can not be applied for other kinds of asymmetric constellation for symmetrical constellation；The mode of shell mapping was being realized
It is difficult to find the shell of a minimum energy in journey.
Therefore, how a kind of lower hsrdware requirements, low complex degree, the probability forming side that can be used in asymmetric constellation are provided
Method, and then transmitting optical signal is made to approach shannon capacity, become a urgent problem to be solved.
Summary of the invention
Being designed to provide for the embodiment of the present invention is a kind of based on geometry-probability forming optical signal generation method and dress
It sets, to provide a kind of lower hsrdware requirements, low complex degree, can be used in the probability manufacturing process of asymmetric constellation, and then makes to send out
It penetrates optical signal and approaches shannon capacity.
In a first aspect, the embodiment of the invention provides a kind of optical signal generation method shaped based on geometry-probability, it is described
Method includes:
Obtain initial data to be sent；
According to the serial number for each planisphere subset for generate after subset segmentation to default planisphere, the original number is determined
According to the corresponding subset sequence number sequence for obeying Optimal Distribution, and according to the binary label of each planisphere subset, institute is determined
State the binary sequence of the corresponding subset sequence number sequence for obeying Optimal Distribution of initial data；Wherein, each planisphere subset
It is after obtaining multimode circle planisphere to the square constellations progress geometrical figuration of default constellation point number, to multimode circle constellation
Figure carries out what subset was divided；
Systematic code coding is carried out to the binary sequence, the information after being encoded；
For the information after the coding, successively chooses the first preset quantity information bit and the second preset quantity is superfluous
Remaining bit is mapped to the multimode circle planisphere, obtains optical signals to be passed.
Optionally, the serial number for each planisphere subset that the basis generate after subset segmentation to default planisphere, really
Determine the corresponding subset sequence number sequence for obeying Optimal Distribution of the initial data, comprising:
Enable si=0, i=1,2,3 ..., n；Cyclic variable l=1；siRepresent the son in length as the obedience Optimal Distribution of L
Collect in sequence number sequence, the number of the subset of serial number i；
Judge whether to meet l < L, L is total the number of iterations；
If it is satisfied, then calculating j=min { arg min Δi(si+ 1) l=l+1 and s }, is updatedj=sj+ 1, and return
Execution judges whether the step of meeting l < L；
If conditions are not met, then exporting each subset serial number in the subset sequence number sequence for the obedience Optimal Distribution that length is L
Number, generate the subset sequence number sequence with all obedience Optimal Distributions of binary number representation, and by the initial data
Bit does corresponding with the subset sequence number sequence of the obedience Optimal Distribution generated, obtains the corresponding obedience most optimal sorting of the initial data
The subset sequence number sequence of cloth.
Optionally, carrying out the step of subset segmentation generates each planisphere subset to default planisphere includes:
The square constellations of default constellation point number carry out geometrical figuration and obtain multimode circle planisphere；
For the multimode circle planisphere, it is oval to different moulds on constellation point according to the maximum original of signaling point average distance
Then it is split, obtains two original constellations, and determines the split path of each original constellation according to preset rules；
The planisphere inner ring and outer rings for taking each original constellation respectively obtain each planisphere subset；
Each planisphere subset is determined according to the sequence of signaling point average distance from small to large in each planisphere subset
Serial number, and it is directed to each planisphere subset, it will be combined, determined by the binary sequence of the split path on vertex to the planisphere subset
For the binary label of the planisphere subset.
Optionally, described that systematic code coding is carried out to the binary sequence, the information after being encoded, comprising:
Low density parity check code LDPC systematic code coding is carried out to the binary sequence, the information after being encoded.
Second aspect, the embodiment of the invention provides a kind of based on geometry-probability forming optical signal generation device, described
Device includes:
Module is obtained, for obtaining initial data to be sent；
Processing module, the serial number for basis to each planisphere subset generated after the progress subset segmentation of default planisphere,
Determine the corresponding subset sequence number sequence for obeying Optimal Distribution of the initial data, and according to the two of each planisphere subset into
Label processed determines the binary sequence of the corresponding subset sequence number sequence for obeying Optimal Distribution of the initial data；Wherein, described
Each planisphere subset is after obtaining multimode circle planisphere to the square constellations progress geometrical figuration of default constellation point number, to institute
It states multimode circle planisphere and carries out what subset was divided；
Coding module, for carrying out systematic code coding to the binary sequence, the information after being encoded；
Mapping block, for for the information after the coding, successively choosing the first preset quantity information bit and the
Two preset quantity redundant bits are mapped to the multimode circle planisphere, obtain optical signals to be passed.
Optionally, the processing module, is specifically used for:
Enable si=0, i=1,2,3 ..., n；Cyclic variable l=1；siRepresent the son in length as the obedience Optimal Distribution of L
Collect in sequence number sequence, the number of the subset of serial number i；
Judge whether to meet l < L, L is total the number of iterations；
If it is satisfied, then calculating j=min { arg min Δi(si+ 1) l=l+1 and s }, is updatedj=sj+ 1, and return
Execution judges whether the step of meeting l < L；
If conditions are not met, then exporting each subset serial number in the subset sequence number sequence for the obedience Optimal Distribution that length is L
Number, generate the subset sequence number sequence with all obedience Optimal Distributions of binary number representation, and by the initial data
Bit does corresponding with the subset sequence number sequence of the obedience Optimal Distribution generated, obtains the corresponding obedience most optimal sorting of the initial data
The subset sequence number sequence of cloth.
Optionally, described device further include: segmentation module generates each constellation for carrying out subset segmentation to default planisphere
Figure subset；
The segmentation module, is specifically used for:
The square constellations of default constellation point number carry out geometrical figuration and obtain multimode circle planisphere；
For the multimode circle planisphere, it is oval to different moulds on constellation point according to the maximum original of signaling point average distance
Then it is split, obtains two original constellations, and determines the split path of each original constellation according to preset rules；
The planisphere inner ring and outer rings for taking each original constellation respectively obtain each planisphere subset；
Each planisphere subset is determined according to the sequence of signaling point average distance from small to large in each planisphere subset
Serial number, and it is directed to each planisphere subset, it will be combined, determined by the binary sequence of the split path on vertex to the planisphere subset
For the binary label of the planisphere subset.
Optionally, the coding module, is specifically used for:
Low density parity check code LDPC systematic code coding is carried out to the binary sequence, the information after being encoded.
The third aspect, the embodiment of the invention provides a kind of electronic equipment, including processor, communication interface, memory and
Communication bus, wherein the processor, the communication interface, the memory are completed each other by the communication bus
Communication；
The memory, for storing computer program；
The processor when for executing the program stored on the memory, realizes method described in first aspect
Step.
Fourth aspect, the embodiment of the invention provides a kind of computer readable storage medium, the computer-readable storage
Dielectric memory contains computer program, and method step as described in relation to the first aspect is realized when the computer program is executed by processor
Suddenly.
In the embodiment of the present invention, the design of optimal subset segmentation can be carried out according to planisphere, divided according to subset is changed
The probability of each subset afterwards, to finally realize the Optimal Distribution of constellation point.Also, the present invention solves the general of asymmetric constellation
Rate Problems in forming, and propose that a kind of novel geometry-probability forming optical signal generates scheme, it can reduce system hardware demand and calculation
Method complexity optimizes the performances such as the bit error rate, broad sense mutual information, and then transmitting optical signal is made to approach shannon capacity.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that being emerged from by implementing the present invention.The objectives and other advantages of the invention can by specification,
Specifically noted structure is achieved and obtained in claims and attached drawing.Certainly, implement any of the products of the present invention or
Method does not necessarily require achieving all the advantages described above at the same time.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of based on geometry-probability forming optical signal generation method flow diagram of the embodiment of the present invention；
Fig. 2 a is that the square shaped 16QAM constellation of the embodiment of the present invention carries out (1,6,9) multimode obtained after geometrical figuration circle
16QAM constellation diagrams；
Fig. 2 b is the flow diagram that the forming of probability subset is carried out to multimode circle 16QAM planisphere of the embodiment of the present invention；
Fig. 3 is that the corresponding subset sequence number sequence process for obeying Optimal Distribution of the determination initial data of the embodiment of the present invention is shown
It is intended to；
Fig. 4 is the signal processing flow schematic diagram of the embodiment of the present invention；
Fig. 5 is a kind of based on geometry-probability forming optical signal generation device structural schematic diagram of the embodiment of the present invention；
Fig. 6 is a kind of electronic equipment structural schematic diagram of the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
A kind of optical signal generation method based on the forming of geometry-probability provided in an embodiment of the present invention is said first
It is bright.
As shown in Figure 1, it is provided in an embodiment of the present invention a kind of based on geometry-probability forming optical signal generation method, it can
With the following steps are included:
S101 obtains initial data to be sent；
Method provided in an embodiment of the present invention can be applied to light-emitting device.Above-mentioned initial data can for example be sent out for light
The data etc. that the data or light-emitting device that jet device generates receive, it is not limited in the embodiment of the present invention.
S102 is determined original according to the serial number for each planisphere subset for generate after subset segmentation to default planisphere
The corresponding subset sequence number sequence for obeying Optimal Distribution of data, and according to the binary label of each planisphere subset, it determines original
The binary sequence of the corresponding subset sequence number sequence for obeying Optimal Distribution of data；Wherein, each planisphere subset is to default star
After the square constellations progress geometrical figuration of seat point number obtains multimode circle planisphere, subset segmentation is carried out to multimode circle planisphere
It obtains；
In embodiments of the present invention, square constellations to default constellation point number it can carry out geometrical figuration in advance and obtain
After multimode circle planisphere, subset is carried out to multimode circle planisphere and divides to obtain each planisphere subset.Above-mentioned default constellation point number
Such as can be 4,16,64 or other possible values, it is not limited in the embodiment of the present invention.For ease of description, at this
In inventive embodiments, by taking constellation point number is 16 as an example, to illustrate method provided in an embodiment of the present invention.
To default planisphere carry out subset segmentation generate each planisphere subset when, can first square shaped 16QAM constellation into
Row geometrical figuration obtains (1,6,9) multimode circle 16QAM planisphere, as shown in Figure 2 a.Multimode circle 16QAM planisphere is carried out new
The probability subset of proposition shapes, and finally obtains geometry-probability forming 16QAM signal.
The process for carrying out the forming of probability subset to multimode circle 16QAM planisphere is as shown in Figure 2 b, which includes:
Step 1: for multimode circle planisphere 201, it is oval to different moulds on constellation point according to signaling point average distance most
Big principle is split it, obtains two original constellations 202,203, and determine each original constellation according to preset rules
Split path.Such as, split path can use binary number representation, and left diameter is denoted as 0, and right wing diameter is denoted as 1.
Step 2: take the planisphere inner ring and outer rings of each original constellation respectively, obtain each planisphere subset 204,205,
206,207.So, it is ensured that the probability that the signaling point among planisphere occurs is high, and the probability of surrounding is low.
Step 3: determining each planisphere subset according to the sequence of signaling point average distance from small to large in each planisphere subset
Serial number, e.g., can according to the sequence of signaling point average distance from small to large in each planisphere subset, give each planisphere subset
It carries out 1,2,3 ... and numbers.And it is directed to each planisphere subset, it will be by the binary system of the split path on vertex to the planisphere subset
Combined sequence is determined as the binary label of the planisphere subset.Such as, each planisphere subset 204,205,206,207 in Fig. 2 b
Corresponding serial number is respectively as follows: 1,3,2,4, and binary label is respectively as follows: 00,01,10,11.
The process of probability subset forming is exactly the input that the signal that will uniformly input becomes Gaussian distributed, to obtain
Shaping gain.The constellation point number for enabling planisphere χ total is | χ |, i-th of subset GiIndicate, the value range of i be i=1,2,
3 ..., n } so thatDiscrete uniform probability distribution is approached into the matching algorithm of ideal distribution by changing subset
Distribution realize, make subset be distributed as be distributed with ideal distribution K-L apart from the smallest experience, even through distribution matching algorithm it
The length of the subset sequence number sequence of the obedience Optimal Distribution exported afterwards is L, and the probability of each subset isWherein, si
It represents in length as in the group number sequence of L, group number is the number of the tuple of i.
In optical signal generating process, as shown in figure 3, according to each star for generate after subset segmentation to default planisphere
The serial number of seat figure subset determines the corresponding subset sequence number sequence for obeying Optimal Distribution of initial data, comprising:
301, initialization enables si=0, i=1,2,3 ..., n；Cyclic variable l=1；siRepresent length as L obedience most
In the subset sequence number sequence of optimal sorting cloth, the number of the subset of serial number i；
302, judge whether to meet l < L, L is total the number of iterations；
303, if it is satisfied, then calculating j=min { arg min Δi(si+ 1) j also }, is determined as Δi(si+ 1) minimum
When i value, and execute step 304；
If ideal distribution is t, the probability distribution guaranteed and ideal probability distribution K-L distance are minimum, i.e.,
PLFor the probability distribution of the subset of serial number i.
Since L is constant, above formula can be with abbreviation
Wherein objective function can be launched into following formula with flexible and method
Calculate j=min { arg min Δi(si+ 1) the smallest sequence number j }, is selected；
304, update l=l+1 and sj=sj+ 1, and return to step 302；
305, if conditions are not met, then exporting each subset serial number in the subset serial number sequence for the obedience Optimal Distribution that length is L
Number in column, and execute step 306 and 307；
306, generate the subset sequence number sequence of all obedience Optimal Distributions with binary number representation；
307, original data bits are done corresponding with the subset sequence number sequence of the obedience Optimal Distribution generated, obtain original number
According to the corresponding subset sequence number sequence for obeying Optimal Distribution.
S103 carries out systematic code coding to binary sequence, the information after being encoded；
Such as, LDPC (Low Density Parity Check Code, low-density parity can be carried out to binary sequence
Check code) systematic code coding.The purpose for selecting systematic code is can to retain the probability distribution of above-mentioned binary sequence.
The selection of the code rate of LDPC coding and the number of subset are related with the number of constellation point in subset, if subset number is
The number of M, the point in each subset are N, then the code rate selected is
S104 successively chooses the first preset quantity information bit and the second preset quantity for the information after coding
Redundant bit is mapped to multimode circle planisphere, obtains optical signals to be passed.
Above-mentioned first preset quantity can be log2M, the second preset quantity can be log2N。
In the embodiment of the present invention, the design of optimal subset segmentation can be carried out according to planisphere, divided according to subset is changed
The probability of each subset afterwards, to finally realize the Optimal Distribution of constellation point.Also, the present invention solves the general of asymmetric constellation
Rate Problems in forming, and propose that a kind of novel geometry-probability forming optical signal generates scheme, it can reduce system hardware demand and calculation
Method complexity optimizes the performances such as the bit error rate, broad sense mutual information, and then transmitting optical signal is made to approach shannon capacity.
Below with reference to a specific embodiment, signal processing flow provided in an embodiment of the present invention is carried out specifically
It is bright.As shown in figure 4, the signal processing flow of the embodiment of the present invention may include:
401: raw information generates the subset serial number sequence for meeting the obedience Optimal Distribution of ideal distribution by distribution adaptation
Column, the algorithm of the certain applications correspond to the algorithm introduced in embodiment illustrated in fig. 3；
402: by the rule introduced in Fig. 2 b illustrated embodiment, to the subset sequence number sequence of the obedience Optimal Distribution of generation
Carry out binary label；
403: to the coding for carrying out LDPC systematic code by the binary sequence after binary label, selecting systematic code
Purpose is can to retain the probability distribution of the binary sequence generated in 402, the selection of the code rate of LDPC coding and of subset
Number is related with the number of constellation point in subset, if subset number is M, the number of the point in each subset is N, the then code rate selected
For
404: successively choosing log2M information bit and log2N number of redundant bit form a 16QAM signal be mapped to (1,
6,9) multimode circle constellation；
405: signal is transmitted through fibre-optic transmission system (FOTS)；
406: to the signal demodulation process received；
407: LDPC decoding is carried out to the binary sequence after demodulation；
408: the inverse transformation of process 402 is done to the sequence by decoding；
409: doing the processing of distribution solution matching algorithm, the i.e. inverse transformation of process 401, final output original information bits.
Correspondingly, the embodiment of the invention also provides a kind of based on geometry-probability forming optical signal generation device, such as figure
Shown in 5, described device includes:
Module 510 is obtained, for obtaining initial data to be sent；
Processing module 520, for the sequence according to each planisphere subset for generate after subset segmentation to default planisphere
Number, determine the corresponding subset sequence number sequence for obeying Optimal Distribution of the initial data, and according to each planisphere subset
Binary label determines the binary sequence of the corresponding subset sequence number sequence for obeying Optimal Distribution of the initial data；Wherein,
Each planisphere subset is to carry out to the square constellations of default constellation point number after geometrical figuration obtains multimode circle planisphere,
What subset was divided is carried out to multimode circle planisphere；
Coding module 530, for carrying out systematic code coding to the binary sequence, the information after being encoded；
Mapping block 540, for for the information after the coding, successively choose the first preset quantity information bit with
Second preset quantity redundant bit is mapped to the multimode circle planisphere, obtains optical signals to be passed.
In the embodiment of the present invention, the design of optimal subset segmentation can be carried out according to planisphere, divided according to subset is changed
The probability of each subset afterwards, to finally realize the Optimal Distribution of constellation point.Also, the present invention solves the general of asymmetric constellation
Rate Problems in forming, and propose that a kind of novel geometry-probability forming optical signal generates scheme, it can reduce system hardware demand and calculation
Method complexity optimizes the performances such as the bit error rate, broad sense mutual information, and then transmitting optical signal is made to approach shannon capacity.
As a kind of embodiment of the embodiment of the present invention, the processing module 520 is specifically used for:
Enable si=0, i=1,2,3 ..., n；Cyclic variable l=1；siRepresent the son in length as the obedience Optimal Distribution of L
Collect in sequence number sequence, the number of the subset of serial number i；
Judge whether to meet l < L, L is total the number of iterations；
If it is satisfied, then calculating j=min { arg min Δi(si+ 1) l=l+1 and s }, is updatedj=sj+ 1, and return
Execution judges whether the step of meeting l < L；
If conditions are not met, then exporting each subset serial number in the subset sequence number sequence for the obedience Optimal Distribution that length is L
Number, generate the subset sequence number sequence with all obedience Optimal Distributions of binary number representation, and by the initial data
Bit does corresponding with the subset sequence number sequence of the obedience Optimal Distribution generated, obtains the corresponding obedience most optimal sorting of the initial data
The subset sequence number sequence of cloth.
As a kind of embodiment of the embodiment of the present invention, described device further include: segmentation module, for default constellation
Figure carries out subset segmentation and generates each planisphere subset；
The segmentation module, is specifically used for:
The square constellations of default constellation point number carry out geometrical figuration and obtain multimode circle planisphere；
For the multimode circle planisphere, it is oval to different moulds on constellation point according to the maximum original of signaling point average distance
Then it is split, obtains two original constellations, and determines the split path of each original constellation according to preset rules；
The planisphere inner ring and outer rings for taking each original constellation respectively obtain each planisphere subset；
Each planisphere subset is determined according to the sequence of signaling point average distance from small to large in each planisphere subset
Serial number, and it is directed to each planisphere subset, it will be combined, determined by the binary sequence of the split path on vertex to the planisphere subset
For the binary label of the planisphere subset.
As a kind of embodiment of the embodiment of the present invention, the coding module 530 is specifically used for:
Low density parity check code LDPC systematic code coding is carried out to the binary sequence, the information after being encoded.
Correspondingly, the embodiment of the invention also provides a kind of electronic equipment, as shown in fig. 6, including processor 601, communication
Interface 602, memory 603 and communication bus 604, wherein the processor 601, the communication interface 602, the memory
603 complete mutual communication by the communication bus 604；
The memory 603, for storing computer program；
The processor 601 when for executing the program stored on the memory, is realized a kind of general based on geometry-
The optical signal generation method of rate forming, which comprises
Obtain initial data to be sent；
According to the serial number for each planisphere subset for generate after subset segmentation to default planisphere, the original number is determined
According to the corresponding subset sequence number sequence for obeying Optimal Distribution, and according to the binary label of each planisphere subset, institute is determined
State the binary sequence of the corresponding subset sequence number sequence for obeying Optimal Distribution of initial data；Wherein, each planisphere subset
It is after obtaining multimode circle planisphere to the square constellations progress geometrical figuration of default constellation point number, to multimode circle constellation
Figure carries out what subset was divided；
Systematic code coding is carried out to the binary sequence, the information after being encoded；
For the information after the coding, successively chooses the first preset quantity information bit and the second preset quantity is superfluous
Remaining bit is mapped to the multimode circle planisphere, obtains optical signals to be passed.
The communication bus 604 that above-mentioned electronic equipment is mentioned can be Peripheral Component Interconnect standard (Peripheral
Component Interconnect, PCI) bus or expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..The communication bus 604 can be divided into address bus, data/address bus, control bus etc..For
Convenient for indicating, only indicated with a thick line in figure, it is not intended that an only bus or a type of bus.
Communication interface 602 is for the communication between above-mentioned electronic equipment and other equipment.
Memory 603 may include random access memory (Random Access Memory, RAM), also may include
Nonvolatile memory (Non-Volatile Memory, NVM), for example, at least a magnetic disk storage.Optionally, memory
It can also be that at least one is located remotely from the storage device of aforementioned processor.
Above-mentioned processor 601 can be general processor, including central processing unit (Central Processing
Unit, CPU), network processing unit (Network Processor, NP) etc.；It can also be digital signal processor (Digital
Signal Processing, DSP), specific integrated circuit (Application Specific Integrated Circuit,
ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic
Device, discrete gate or transistor logic, discrete hardware components.
In the embodiment of the present invention, the design of optimal subset segmentation can be carried out according to planisphere, divided according to subset is changed
The probability of each subset afterwards, to finally realize the Optimal Distribution of constellation point.Also, the present invention solves the general of asymmetric constellation
Rate Problems in forming, and propose that a kind of novel geometry-probability forming optical signal generates scheme, it can reduce system hardware demand and calculation
Method complexity optimizes the performances such as the bit error rate, broad sense mutual information, and then transmitting optical signal is made to approach shannon capacity.
Correspondingly, the embodiment of the invention also provides a kind of computer readable storage mediums.The computer-readable storage medium
It is stored with computer program in matter, is realized when computer program is executed by processor a kind of based on geometry-probability forming light letter
Number generation method, which comprises
Obtain initial data to be sent；
According to the serial number for each planisphere subset for generate after subset segmentation to default planisphere, the original number is determined
According to the corresponding subset sequence number sequence for obeying Optimal Distribution, and according to the binary label of each planisphere subset, institute is determined
State the binary sequence of the corresponding subset sequence number sequence for obeying Optimal Distribution of initial data；Wherein, each planisphere subset
It is after obtaining multimode circle planisphere to the square constellations progress geometrical figuration of default constellation point number, to multimode circle constellation
Figure carries out what subset was divided；
Systematic code coding is carried out to the binary sequence, the information after being encoded；
For the information after the coding, successively chooses the first preset quantity information bit and the second preset quantity is superfluous
Remaining bit is mapped to the multimode circle planisphere, obtains optical signals to be passed.
Above-mentioned computer readable storage medium can include but is not limited to random access memory (RAM), dynamic random is deposited
Access to memory (DRAM), static random access memory (SRAM), read-only memory (ROM), programmable read only memory
(PROM), Erarable Programmable Read only Memory (EPROM), electrically erasable programmable read-only memory (EEPROM), flash memory (example
Such as, NOR type flash memory or NAND-type flash memory), Content Addressable Memory (CAM), polymer memory is (for example, ferroelectric polymers
Memory), phase transition storage, ovonic memory, silicon-oxide-nitride silicon-silica-silicon (Silicon-
Oxide-Nitride-Oxide-Silicon, SONOS) memory, magnetic card or light-card, also or any other appropriate type
Computer readable storage medium.
In the embodiment of the present invention, the design of optimal subset segmentation can be carried out according to planisphere, divided according to subset is changed
The probability of each subset afterwards, to finally realize the Optimal Distribution of constellation point.Also, the present invention solves the general of asymmetric constellation
Rate Problems in forming, and propose that a kind of novel geometry-probability forming optical signal generates scheme, it can reduce system hardware demand and calculation
Method complexity optimizes the performances such as the bit error rate, broad sense mutual information, and then transmitting optical signal is made to approach shannon capacity.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
Each embodiment in this specification is all made of relevant mode and describes, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.Especially for device,
For electronic equipment, storage medium, since it is substantially similar to the method embodiment, so being described relatively simple, related place
Illustrate referring to the part of embodiment of the method.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of based on geometry-probability forming optical signal generation method, which is characterized in that the described method includes:
Obtain initial data to be sent；
According to the serial number for each planisphere subset for generate after subset segmentation to default planisphere, the initial data pair is determined
The subset sequence number sequence for the obedience Optimal Distribution answered, and according to the binary label of each planisphere subset, determine the original
The binary sequence of the corresponding subset sequence number sequence for obeying Optimal Distribution of beginning data；Wherein, each planisphere subset is pair
The square constellations of default constellation point number carry out after geometrical figuration obtains multimode circle planisphere, to multimode circle planisphere into
Row subset is divided；
Systematic code coding is carried out to the binary sequence, the information after being encoded；
For the information after the coding, the first preset quantity information bit and the second preset quantity redundancy ratio are successively chosen
Spy is mapped to the multimode circle planisphere, obtains optical signals to be passed.
2. the method according to claim 1, wherein the basis is to raw after the progress subset segmentation of default planisphere
At each planisphere subset serial number, determine the initial data it is corresponding obey Optimal Distribution subset sequence number sequence, comprising:
Enable si=0, i=1,2,3 ..., n；Cyclic variable l=1；siRepresent the subset sequence in length as the obedience Optimal Distribution of L
In number sequence, the number of the subset of serial number i；
Judge whether to meet l < L, L is total the number of iterations；
If it is satisfied, then calculating j=min { argmin Δi(si+ 1) l=l+1 and s }, is updatedj=sj+ 1, and return to execution and sentence
Disconnected the step of whether meeting l < L；
If conditions are not met, then exporting of each subset serial number in the subset sequence number sequence for the obedience Optimal Distribution that length is L
Number, generates the subset sequence number sequence with all obedience Optimal Distributions of binary number representation, and by the original data bits
It does with the subset sequence number sequence of the obedience Optimal Distribution of generation corresponding, obtains that the initial data is corresponding to obey Optimal Distribution
Subset sequence number sequence.
3. the method according to claim 1, wherein carrying out subset segmentation to default planisphere generates each planisphere
The step of subset includes:
The square constellations of default constellation point number carry out geometrical figuration and obtain multimode circle planisphere；
For the multimode circle planisphere, it is oval to different moulds on constellation point according to the maximum principle pair of signaling point average distance
It is split, and obtains two original constellations, and the split path of each original constellation is determined according to preset rules；
The planisphere inner ring and outer rings for taking each original constellation respectively obtain each planisphere subset；
The serial number of each planisphere subset is determined according to the sequence of signaling point average distance from small to large in each planisphere subset,
And it is directed to each planisphere subset, it will be combined by the binary sequence of the split path on vertex to the planisphere subset, be determined as this
The binary label of planisphere subset.
4. the method according to claim 1, wherein it is described to the binary sequence carry out systematic code coding,
Information after being encoded, comprising:
Low density parity check code LDPC systematic code coding is carried out to the binary sequence, the information after being encoded.
5. a kind of optical signal generation device based on the forming of geometry-probability, which is characterized in that described device includes:
Module is obtained, for obtaining initial data to be sent；
Processing module is determined for the serial number according to each planisphere subset for generate after subset segmentation to default planisphere
The corresponding subset sequence number sequence for obeying Optimal Distribution of the initial data, and according to the binary system mark of each planisphere subset
Label determine the binary sequence of the corresponding subset sequence number sequence for obeying Optimal Distribution of the initial data；Wherein, each star
Seat figure subset is after obtaining multimode circle planisphere to the square constellations progress geometrical figuration of default constellation point number, to described more
Mould circle planisphere carries out what subset was divided；
Coding module, for carrying out systematic code coding to the binary sequence, the information after being encoded；
Mapping block, for successively choosing the first preset quantity information bit and second in advance for the information after the coding
If quantity redundant bit, it is mapped to the multimode circle planisphere, obtains optical signals to be passed.
6. device according to claim 5, which is characterized in that the processing module is specifically used for:
Enable si=0, i=1,2,3 ..., n；Cyclic variable l=1；siRepresent the subset sequence in length as the obedience Optimal Distribution of L
In number sequence, the number of the subset of serial number i；
Judge whether to meet l < L, L is total the number of iterations；
If it is satisfied, then calculating j=min { argmin Δi(si+ 1) l=l+1 and s }, is updatedj=sj+ 1, and return to execution and sentence
Disconnected the step of whether meeting l < L；
If conditions are not met, then exporting of each subset serial number in the subset sequence number sequence for the obedience Optimal Distribution that length is L
Number, generates the subset sequence number sequence with all obedience Optimal Distributions of binary number representation, and by the original data bits
It does with the subset sequence number sequence of the obedience Optimal Distribution of generation corresponding, obtains that the initial data is corresponding to obey Optimal Distribution
Subset sequence number sequence.
7. device according to claim 5, which is characterized in that described device further include: segmentation module, for default star
Seat figure carries out subset segmentation and generates each planisphere subset；
The segmentation module, is specifically used for:
The square constellations of default constellation point number carry out geometrical figuration and obtain multimode circle planisphere；
For the multimode circle planisphere, it is oval to different moulds on constellation point according to the maximum principle pair of signaling point average distance
It is split, and obtains two original constellations, and the split path of each original constellation is determined according to preset rules；
The planisphere inner ring and outer rings for taking each original constellation respectively obtain each planisphere subset；
The serial number of each planisphere subset is determined according to the sequence of signaling point average distance from small to large in each planisphere subset,
And it is directed to each planisphere subset, it will be combined by the binary sequence of the split path on vertex to the planisphere subset, be determined as this
The binary label of planisphere subset.
8. device according to claim 5, which is characterized in that the coding module is specifically used for:
Low density parity check code LDPC systematic code coding is carried out to the binary sequence, the information after being encoded.
9. a kind of electronic equipment, which is characterized in that including processor, communication interface, memory and communication bus, wherein described
Processor, the communication interface, the memory complete mutual communication by the communication bus；
The memory, for storing computer program；
The processor when for executing the program stored on the memory, realizes any side claim 1-4
Method step.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer in the computer readable storage medium
Program realizes method according to any of claims 1-4 step when the computer program is executed by processor.
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