CN105871505A - Multidimensional-code processing method and system, sending terminal and receiving terminal - Google Patents

Abstract

The present invention discloses a multidimensional-code processing method and system, a sending terminal and a receiving terminal. The method comprises: the sending forms multidimensional codes having dimensions of 2*N according to an input information sequence, wherein the N is the number of symbols included in each multidimensional code; each multidimensional code includes N*k-1 information bits and one odd-even checking bit; the sending terminal sends the multidimensional codes; the receiving terminal receives the multidimensional codes; and the receiving terminal demodulates the multidimensional codes to obtain the N*k-1 information bits in the multidimensional codes.

Description

Multidimensional code processing method, transmitting terminal, receiving terminal and system

Technical field

The present invention relates to the modulation-demodulation technique of the communications field, particularly relate to a kind of multidimensional code processing method, send out Sending end, receiving terminal and system.

Background technology

In coherent light communication, coherent optical heterodyne communicatio can detect the amplitude of light, phase place, polarization state, frequently All information entrained by rate, therefore coherent light communication has the modulation system of plurality of optional.

Traditional modulation format utilizes the amplitude of signal, phase place to may make up multiple one-dimensional, two-dimentional modulated signal Planisphere.For more high-dimensional modulation, existing method is on the basis of traditional one-dimensional or two-dimensional modulation On realized by the dimension utilizing the polarization state of light, signal pulse position etc. to further expand signal space.

As shown in Figure 1, each symbol carries a kind of existing multi-dimensional modulation method based on polarization state association K bit information, the symbol in X polarization state is directly by k bit effective information (b₁b₂…b_k) map obtain, In Y polarization state, each symbol only carries k-1 bit effective information (b₁’b₂’…b_k-1'), by the k in X polarization state Bit input carries out mould two with the k-1 bit input in Y polarization state and adds computing and obtain the symbol in Y polarization state Kth bit input, thus so that the symbol mapped in latter two polarization state is interrelated.By two After symbol in polarization state is associated, forms a branch of signal and be sent to receiving terminal.Obviously adopt in this way When carrying out signal modulation, X polarization state and Y polarization state are because of the kth bit of each symbol in Y polarization state With X polarization state, there is polarization state relevance.

First, the mode between this X polarization state and Y polarization state with polarization relevance is used to form multidimensional Symbol, when carrying out Multi-Dimensional Extension, modulation dimension change is only capable of becoming two dimension tune from single polarization state modulation dimension transformation System, lacks the flexibility of dimension extension.

Secondly, in the prior art, after receiving terminal receives the signal that above-mentioned transmitting terminal sends, according to existing Some coherent demodulation, it will because the polarization state association between X polarization state and Y polarization state, and cause one During bundle signal is divided into two polarization states, occur recovering and demodulation inefficacy.Obvious existing coherent demodulation The inapplicable above-mentioned multidimensional symbol utilizing polarization state modulation to be formed.

Summary of the invention

In view of this, embodiment of the present invention expectation provides a kind of multidimensional code processing method, transmitting terminal, receiving terminal And system, with the problem solving the dimension extension underaction of multidimensional code modulation.

For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:

Embodiment of the present invention first aspect provides a kind of multidimensional code processing method, and described method includes:

Transmitting terminal, according to input message sequence, forms the multidimensional code that dimension is 2*N；Wherein, described N is one The symbolic number that individual described multidimensional code includes；One described multidimensional code include N*k-1 information bit and 1 strange Even parity check bit；Described k is the bit number that each described symbol includes；

Transmitting terminal sends described multidimensional code；

Receiving terminal receives described multidimensional code；

Receiving terminal demodulates described multidimensional code, obtains N*k-1 information bit in described multidimensional code.

Preferably,

Described transmitting terminal, according to input message sequence, forms the multidimensional code that dimension is 2*N, including:

Obtain input message sequence；

Described input message sequence is grouped, obtains including continuous distributed in described input message sequence First packet of N*k-1 information bit；

First packet each described is carried out checksum coding, obtains including second point of N*k bit Group；Wherein, described N*k bit includes the Parity Check Bits of 1 bit；

Described second packet is mapped as N number of symbol successively.

Preferably,

Described receiving terminal demodulates described multidimensional code, obtains N*k-1 information bit in described multidimensional code, bag Include:

The reception signal including at least one multidimensional code is sampled, it is thus achieved that sample sequence；

Described sample sequence is grouped, forms the 3rd packet including N number of sample value；

The N number of sample value including the 3rd packet each described carries out demapping, obtains N*k bit；Its In, described in described 3rd packet, N*k bit includes the Parity Check Bits of 1 bit；Described k The bit number included for each described symbol；

Described N*k bit is carried out even-odd check, forms check results；

After utilizing described check results to make decisions, export the described N*k-1 information bit in described multidimensional code.

The embodiment of the present invention the one or two aspect provides a kind of multidimensional code processing method, and described method includes:

According to input message sequence, form the multidimensional code that dimension is 2*N；Wherein, described N is described in one The symbolic number that multidimensional code includes；One described multidimensional code includes N*k-1 information bit and 1 odd-even check Bit；Described k is the bit number that each described symbol includes；

Send described multidimensional code.

Preferably,

Described foundation input message sequence, forms the multidimensional code that dimension is 2*N, including:

Obtain input message sequence；

Described input message sequence is grouped, obtains including continuous distributed in described input message sequence First packet of N*k-1 information bit；

First packet each described is carried out checksum coding, obtains including second point of N*k bit Group；Wherein, described N*k bit includes the Parity Check Bits of 1 bit；

Described second packet is mapped as N number of symbol successively.

Preferably,

Described first packet each described is carried out checksum coding, obtain including the of N*k bit Two packets, including:

Each bit in described first packet is carried out mould two summation operation, obtains described Parity Check Bits；

Described Parity Check Bits is added in described first packet, form described second packet.

Preferably,

Described method also includes:

Close forming described multidimensional code in X polarization state with the described multidimensional code of formation in described Y polarization state Connection, forms a modulated signal；

Send described modulated signal.

Preferably,

Described modulated signal is optical signal；

The described modulated signal of described transmission includes:

Described optical signal is coupled in optical signal channels.

The embodiment of the present invention third aspect provides a kind of multidimensional code processing method, and described method includes:

Receiving terminal receives described multidimensional code；The dimension of described multidimensional code is 2*N；Described N be one described many The symbolic number that dimension code includes；One described multidimensional code includes N*k-1 information bit and 1 odd-even check ratio Special；Described k is the bit number that each described symbol includes；

Receiving terminal demodulates described multidimensional code, obtains described N*k-1 the information bit in described multidimensional code.

Preferably,

Described receiving terminal demodulates described multidimensional code, obtains described N*k-1 the information bit in described multidimensional code, Including:

The reception signal including at least one multidimensional code is sampled, it is thus achieved that sample sequence；

Described sample sequence is grouped, forms the 3rd packet including N number of sample value；

The N number of sample value including the 3rd packet each described carries out demapping, obtains N*k bit；Its In, described in described 3rd packet, N*k bit includes the Parity Check Bits of 1 bit；

Described N*k bit is carried out even-odd check, forms check results；

After utilizing described check results to make decisions, export the described N*k-1 information bit in described multidimensional code.

Preferably,

Described described N*k bit is carried out even-odd check, form check results, including:

Front N*k-1 bit in described N*k bit is carried out mould two and adds computing, obtain operation result；

When described operation result is consistent with described Parity Check Bits, confirms that verification is passed through, otherwise verify not Pass through.

Preferably,

Before the described N number of sample value including the 3rd packet each described carries out demapping, described method Also include:

The first Euclidean distance is used to make decisions the N number of sample value in each described 3rd packet described, shape Become court verdict；

The described N number of sample value including the 3rd packet each described carries out demapping, including:

Demapping is carried out according to described court verdict.

Preferably,

Described method also includes:

When verification is obstructed out-of-date, the N number of sample value in each described 3rd packet described is used second European Distance makes decisions；Wherein, described first Euclidean distance is less than described second Euclidean distance.

Preferably,

Described method also includes:

Sample in the docking collection of letters number, it is thus achieved that before sample sequence, a branch of signal received is divided into two Receive signal；Wherein, a described reception signal is the reception signal corresponding to X polarization state；Another be Reception signal corresponding to Y polarization state.

Embodiment of the present invention fourth aspect provides a kind of multidimensional code processing system, and described system includes:

Transmitting terminal, for according to input message sequence, forming the multidimensional code that dimension is 2*N；Wherein, described N is the symbolic number that a described multidimensional code includes；One described multidimensional code include N*k-1 information bit and 1 parity bits；And send described multidimensional code；Described k is the bit that each described symbol includes Number；

Receiving terminal, is used for receiving described multidimensional code；And receiving terminal demodulates described multidimensional code, obtain described multidimensional N*k-1 information bit in Ma.

Preferably,

Described transmitting terminal, specifically for obtaining input message sequence；Described input message sequence is grouped, Obtain including the first packet of N*k-1 information bit of continuous distributed in described input message sequence；To often One described first packet carries out checksum coding, obtains including the second packet of N*k bit；Wherein, Described N*k bit includes the Parity Check Bits of 1 bit；And described second packet is mapped successively For N number of symbol.

Preferably,

Described receiving terminal, specifically for sampling to the reception signal including at least one multidimensional code, it is thus achieved that Sample sequence；Described sample sequence is grouped, forms the 3rd packet including N number of sample value；To each N number of sample value that individual described 3rd packet includes carries out demapping, obtains N*k bit；Wherein, described Described in three packets, N*k bit includes the Parity Check Bits of 1 bit；Described N*k bit is entered Row even-odd check, forms check results；After utilizing described check results to make decisions, export described multidimensional code In described N*k-1 information bit.

The embodiment of the present invention the 5th aspect provides a kind of transmitting terminal, and described transmitting terminal includes:

Modulating unit, for according to input message sequence, forming the multidimensional code that dimension is 2*N；Wherein, institute Stating N is the symbolic number that a described multidimensional code includes；One described multidimensional code includes N*k-1 information bit With 1 parity bits；Described k is the bit number that each described symbol includes；

Transmitting element, is used for sending described multidimensional code.

Preferably,

Described modulating unit, including:

Acquisition module, is used for obtaining input message sequence；

First grouping module, for being grouped described input message sequence, obtains including described input letter First packet of N*k-1 information bit of continuous distributed in breath sequence；

Check code module, for the first packet each described is carried out checksum coding, including Second packet of N*k bit；Wherein, described N*k bit includes the even-odd check ratio of 1 bit Special；

Mapping block, for being mapped as N number of symbol successively by described second packet.

Preferably,

Described check code module, sues for peace fortune specifically for each bit in described first packet is carried out mould two Calculate, obtain described Parity Check Bits；And described Parity Check Bits is added in described first packet, Form described second packet.

Preferably,

Described device also includes:

Associative cell, for forming described multidimensional code and the institute of formation in described Y polarization state in X polarization state State multidimensional code to be associated, form a modulated signal；

Transmitting element, specifically for sending described modulated signal.

The embodiment of the present invention the 6th aspect provides a kind of receiving terminal, and described receiving terminal includes:

Receive unit, be used for receiving described multidimensional code；Wherein, the dimension of described multidimensional code is 2*N；Described N is the symbolic number that a described multidimensional code includes；One described multidimensional code include N*k-1 information bit and 1 parity bits；Described k is the bit number that each described symbol includes；

Demodulating unit, is used for demodulating described multidimensional code, obtains N*k-1 information bit in described multidimensional code.

Preferably,

Described demodulating unit, including:

Sampling module, for sampling to the reception signal including at least one described multidimensional code, it is thus achieved that sample Value sequence；

Second grouping module, for being grouped described sample sequence, is formed and includes the 3rd of N number of sample value Packet；Wherein, the symbolic number of each multidimensional code that described N represents；

De-mapping module, carries out demapping for the N number of sample value including the 3rd packet each described, To N*k bit；Wherein, described in described 3rd packet, N*k bit includes the odd even of 1 bit Check bit；

Correction verification module, for carrying out even-odd check by described N*k bit；

Output module, after being used for utilizing described check results to make decisions, export in described multidimensional code is described N*k-1 information bit.

Preferably,

Described correction verification module, specifically for carrying out mould by the described N*k-1 information bit in described N*k bit Two add computing, obtain operation result；And when described operation result is consistent with described Parity Check Bits, really Recognize verification to pass through, otherwise verify and do not pass through.

Preferably,

Described receiving terminal also includes:

Judging module, for carrying out demapping in the described N number of sample value including the 3rd packet each described Before, the first Euclidean distance is used to make decisions the N number of sample value in each described 3rd packet described, Form court verdict；

Described De-mapping module, specifically for carrying out demapping according to described court verdict.

Preferably,

Described judging module, is additionally operable to when verification is obstructed out-of-date, by each described 3rd packet described N number of sample value uses the second Euclidean distance to make decisions；Wherein, described first Euclidean distance is less than described second Euclidean distance.

Preferably,

Described device also includes:

Separate units, for sampling in the docking collection of letters number, it is thus achieved that before sample sequence, will received Bundle signal is divided into two to receive signal；Wherein, a described reception signal is the reception corresponding to X polarization state Signal；Another is the reception signal corresponding to Y polarization state.

Multidimensional code processing method, transmitting terminal, receiving terminal and system described in the embodiment of the present invention, carry out many When tieing up the modulation of code, in each multidimensional code, all carry Parity Check Bits, thus relative to multidimensional code Between even-odd check, the dimension of multidimensional code is only decided by the symbolic number that multidimensional code includes, thus can be easy logical Cross and adjust symbolic number that each multidimensional code includes to realize being adjusted flexibly of multidimensional code dimension extension.Same with this Time, adopt modulation and the solution carrying out multidimensional code in this way, the multidimensional code being applied to dual-polarization state is modulated Cheng Zhong, forms the multidimensional code in dual-polarization state respectively, does not has incidence relation between the multidimensional code of two polarization states, Thus do not have polarization state association, thus receiving terminal can use prior art to be demodulated.

Accompanying drawing explanation

Fig. 1 is the schematic flow sheet of the four-dimensional code modulator approach of a kind of polarization state association；

Fig. 2 is the schematic flow sheet of the first the multidimensional code processing method described in the embodiment of the present invention；

Fig. 3 is the schematic flow sheet of the second multidimensional code processing method described in the embodiment of the present invention；

Fig. 4 is the schematic flow sheet of the third multidimensional code processing method described in the embodiment of the present invention；

Fig. 5 is the schematic flow sheet of the modulator approach of the multidimensional code described in the embodiment of the present invention；

Fig. 6 is the schematic flow sheet of the third multidimensional code processing method described in the embodiment of the present invention；

Fig. 7 is the schematic flow sheet of the multidimensional code demodulation method described in the embodiment of the present invention；

Fig. 8 is the structural representation of the multidimensional code processing system described in the embodiment of the present invention；

Fig. 9 is the structural representation of the transmitting terminal described in the embodiment of the present invention；

Figure 10 is the structural representation of the modulating unit described in the embodiment of the present invention；

Figure 11 is the structural representation of the receiving terminal described in the embodiment of the present invention；

Figure 12 is the structural representation of the demodulating unit described in the embodiment of the present invention；

Figure 13 is one of schematic flow diagram of multidimensional code modulation /demodulation described in example of the present invention；

Figure 14 is the two of the schematic flow diagram of the multidimensional code modulation /demodulation described in example of the present invention；

Figure 15 is the effect schematic diagram that the multidimensional code described in example of the present invention processes.

Detailed description of the invention

Below in conjunction with Figure of description and specific embodiment technical scheme done and further explain in detail State.

Embodiment of the method one:

As in figure 2 it is shown, the present embodiment provides a kind of multidimensional code processing method, described method includes:

Step S101: transmitting terminal, according to input message sequence, forms the multidimensional code that dimension is 2*N；Wherein, Described N is the symbolic number that a described multidimensional code includes；One described multidimensional code includes N*k-1 information ratio Spy and 1 parity bits；Described k is the bit number that each described symbol includes；

Step S102: transmitting terminal sends described multidimensional code；

Step S103: receiving terminal receives described multidimensional code；

Step S104: receiving terminal demodulates described multidimensional code, obtains N*k-1 information ratio in described multidimensional code Special.

The multidimensional code that transmitting terminal is formed in the present embodiment, including N*k bit；Wherein, each multidimensional Code all includes a Parity Check Bits, and this bit can be used for the verification of this multidimensional code, thus need not be as existing In technology, the data in dual-polarization state verify.

Multidimensional code modulator approach described in the present embodiment can apply to single polarization state modulation, it is also possible to is applied to The multidimensional code of dual-polarization state as described in the prior art processes；Adopt that to carry out dual-polarization state in this way many When dimension code processes, polarization state association between the multidimensional code in each polarization state of formation, will not be produced, thus The demodulation of receipt of subsequent end can be facilitated, and can be realized by the size controlling described N in the present embodiment Being adjusted flexibly of the dimension of multidimensional code.

The dimension of a described multidimensional code is equal to 2*N in the present embodiment；Owing to described symbol is complex symbol； Each described complex symbol includes real part and imaginary part；And real part and imaginary part generally corresponds to different dimensions, from And the dimension of a described multidimensional code is 2*N.Obviously can be real by controlling the size of N in modulated process The flexible control of existing multidimensional code dimension.

Further, as it is shown on figure 3, described step S101 comprises the steps that

Step S310: obtain input message sequence；

Step S320: be grouped described input message sequence, obtains including in described input message sequence First packet of N*k-1 information bit of continuous distributed；

Step S330: the first packet each described is carried out checksum coding, obtains including that N*k is compared The second special packet；Wherein, described N*k bit includes the Parity Check Bits of 1 bit；Generally Can be using described parity bits as last bit in described second packet；

Step S340: described second packet is mapped as N number of symbol successively.

Described input message sequence usually represents 01 sequence specifying meaning；Concrete such as 0001010100. The most described input message sequence is grouped.If presently described input message sequence bag Include 16 bits；Each described first packet includes 4 bits；Then will form 4 first packets；Its In, the 1st first packet include be in described input message sequence the 0th bit to the 3rd bit；2nd Individual first packet include be in described input message sequence the 4th bit to the 7th bit.Herein, described defeated Enter in information sequence the counting of each bit from the beginning of 0.

Each described first packet in the present embodiment includes N*k-1 information bit；Wherein, N represents The symbolic number that includes of each multidimensional code；As when a multidimensional code includes two symbols, described N is equal to 2；K then illustrates the bit number that each symbol includes.

The most also include that step S330 may particularly include to be entered by each bit in described first packet Row mould two summation operation, obtains described Parity Check Bits；And described Parity Check Bits is added to described In first packet, form described second packet.Adopt carry out in this way checksum coding have realization letter Just advantage.

Mould two described in the present embodiment is summed to each bit in described first packet is carried out XOR behaviour Make.Such as $1\⊕0\⊕1\⊕0=\mathrm{0,1}\⊕0\⊕1\⊕1=1.$ DescribedAccord with for xor operation.

In step S340, the second packet is mapped as N number of symbol successively, herein, the most such as carries out constellation Figure mapping or gray mappings etc., obtain multidimensional code.Before in the multidimensional code being usually formed, N*k-1 bit is institute Stating information bit, the N*k bit is described Parity Check Bits；So can facilitate receipt of subsequent end pair Information bit and the differentiation of Parity Check Bits.

Present embodiments provide a kind of method specifically how performing step S101, have realize simple and easy to do Advantage.

As further improvement of this embodiment, as it is shown on figure 3, described step S104 comprises the steps that

Step S350: the reception signal including at least one multidimensional code is sampled, it is thus achieved that sample sequence；

Step S360: be grouped described sample sequence, forms the 3rd packet including N number of sample value；Its In, the symbolic number of each multidimensional code that described N represents；

Step S370: the N number of sample value including the 3rd packet each described carries out demapping, obtains N*k Individual bit；Wherein, described in described 3rd packet, N*k bit includes the even-odd check ratio of 1 bit Special；

Step S380: described N*k bit carries out even-odd check, forms check results；

Step S390: after utilizing described check results to make decisions, exports the described N*k-1 in described multidimensional code Information bit.Last ratio in described Parity Check Bits is described second packet and described multidimensional code Time special, then for exporting front N*k-1 the bit in multidimensional code in step S390, it is the described letter of output Breath bit.

In the present embodiment because each multidimensional code the most individually carries Parity Check Bits, therefore carrying out very During even parity check, it is that each multidimensional code is carried out even-odd check；According to even-odd check it is known that the 3rd is grouped Corresponding bit information is in transmitting procedure or in the signal processing of receiving terminal, if go wrong, And then take the raising of corresponding countermeasure to demodulate the probability of correct information bit carrying out symbol judgement.

To be received signal according to even-odd check result in step S390 is for 1 or be the judgement such as 0, sentences Certainly export described information bit afterwards.

When obviously carrying out signal demodulation in the present embodiment, have and realize easy advantage, and any two is many Bit in dimension code does not has relevance, thus is made without between multidimensional code internal bit relevance and processes, It is thus possible to directly utilize demodulation structure of the prior art to carry out above-mentioned demodulation.

First, embodiments provide the processing method of a kind of multidimensional code, this multidimensional code processing method shape The multidimensional code become, the most individually includes the Parity Check Bits of at least one bit, thus facilitates receiving terminal foundation The self-contained Parity Check Bits of multidimensional code carries out the verification of multidimensional code, thus is applied to the modulation of dual-polarization state Time, the problem being not result in needing that the multidimensional code in X polarization state and Y polarization state is combined verification, thus not The problem that the demodulation caused in coherent reception was lost efficacy can be caused because combining verification.

Embodiment of the method two:

As shown in Figure 4, the present embodiment provides a kind of the present embodiment to provide a kind of multidimensional code modulator approach, described Method includes:

Step S110: according to input message sequence, form the multidimensional code that dimension is 2*N；Wherein, described N It it is the symbolic number that includes of a described multidimensional code；One described multidimensional code includes N*k-1 information bit and 1 Individual parity bits；Described k is the bit number that each described symbol includes；

Step S120: send described multidimensional code.

A self-contained Parity Check Bits in the multidimensional code that the present embodiment is formed, so at receiving terminal energy Enough directly verify according to this Parity Check Bits that multidimensional code is self-contained, and need not be from other multidimensional Code or other information obtain check bit such that it is able to simplicity realizes the verification of multidimensional code.

As it is shown in figure 5, described step S110 specifically comprises the steps that

Step S111: obtain input message sequence；

Step S112: be grouped described input message sequence, obtains including in described input message sequence First packet of N*k-1 information bit of continuous distributed；

Step S113: the first packet each described is carried out checksum coding, obtains including that N*k is compared The second special packet；Wherein, described N*k bit includes the Parity Check Bits of 1 bit；

Step S114: described second packet is mapped as N number of symbol successively；

Described input message sequence usually represents 01 sequence specifying meaning；Concrete such as 0001010100.

Step S112 makes successively described input message sequence is grouped.If presently described input information Sequence includes 16 bits；Each described first packet includes 4 bits；Then will form 4 first point Group；Wherein, the 1st first packet include be in described input message sequence the 0th bit to the 3rd bit； 2nd first packet include be in described input message sequence the 4th bit to the 7th bit.Herein, institute State in input message sequence the counting of each bit from the beginning of 0.

Each described first packet in the present embodiment includes N*k-1 information bit；Wherein, N represents The symbolic number that includes of each multidimensional code；As when a multidimensional code includes two symbols, described N is equal to 2；K then illustrates the bit number that each symbol includes.

The most also include step S113, the first packet each described is carried out even-odd check volume Code；To be formed than the described first the second packet being grouped many 1 bits；In second packet, ratio is in the first packet This bit additional is the Parity Check Bits that in the first packet, each bit carries out that even-odd check obtains.

In step S114, the second packet is mapped as N number of symbol successively, herein, the most such as carries out constellation Figure mapping or gray mappings etc., obtain multidimensional code.

Multidimensional code modulator approach described in the present embodiment can apply to single polarization state modulation, it is also possible to is applied to Dual-polarization state modulation as described in the prior art；Adopt carry out in this way dual-polarization state modulation time, formed Each polarization state on multidimensional code between will not produce polarization state association such that it is able to facilitate receipt of subsequent End directly uses existing method to be demodulated, thus has good advantage compatible with prior art.And at this Embodiment can be realized being adjusted flexibly of dimension of multidimensional code by the size controlling described N.

The dimension of a described multidimensional code is equal to 2*N in the present embodiment；Owing to described symbol is complex symbol； Each described complex symbol includes real part and imaginary part；And real part and imaginary part generally corresponds to different dimensions, from And the dimension of a described multidimensional code is 2*N.Obviously can be real by controlling the size of N in modulated process The flexible control of existing multidimensional code dimension.

Specifically, described step S113 comprises the steps that and each bit in described first packet is carried out mould two summation Computing, obtains described Parity Check Bits；And described Parity Check Bits is added in described first packet, Form described second packet.Adopt and carry out the advantage that checksum coding has realization simplicity in this way.

Mould two described in the present embodiment is summed to each bit in described first packet is carried out XOR behaviour Make.Such as $1\⊕0\⊕1\⊕0=\mathrm{0,1}\⊕0\⊕1\⊕1=1.$ DescribedAccord with for xor operation.

Method described in the present embodiment can apply to single polarization state coding, it is also possible to is applied to dual-polarization state and compiles Code；When being applied to dual-polarization state coding, described method also includes: will form described multidimensional in X polarization state Code is associated with the described multidimensional code of formation in described Y polarization state, forms a modulated signal；And send Described modulated signal.

Form the multidimensional code in X polarization state and the multidimensional code formed in Y polarization state all uses above-mentioned steps S110 To step S114；In order to realize polarization state combined modulation, the most also by many in two polarization states Dimension code is associated, and obtains a modulated signal, to improve efficiency of transmission.X is inclined the most in the present embodiment In polarization state and Y polarization state, the bit of concrete multidimensional code is constituted, and does not has incidence relation each other, i.e. X polarizes Do not polarize association between state and Y polarization state, therefore existing coherent reception structure can be used to enter at receiving terminal In row one signal to two polarization state, the separation of signal, has the strongest compatibility with prior art.

Further, described modulated signal is optical signal；The described modulated signal of described transmission includes: by described Optical signal is coupled in optical signal channels.The optical signal channels etc. that described optical signal channels is specifically formed such as optical fiber.

Multidimensional code modulator approach described in the present embodiment can be applicable to various types of communication, is particularly suited for light During fiber communication.

Embodiment of the method three:

As shown in Figure 6, the present embodiment provides a kind of multidimensional code demodulation method, and described method includes:

Step S210: receive described multidimensional code；The dimension of described multidimensional code is 2*N；Described N is an institute State the symbolic number that multidimensional code includes；One described multidimensional code includes N*k-1 information bit and 1 odd even inspection Test bit；Described k is the bit number that each described symbol includes；

Step S220: demodulate described multidimensional code, obtains described N*k-1 the information bit in described multidimensional code.

The multidimensional code of the present embodiment reception self writes the multidimensional code of parity check code, such multidimensional code time same Itself can be achieved with verification, thus there is the advantage that verification is easy.

The method is and the multidimensional code modulator approach in embodiment of the method two, it is common that paired or complete applicable.

As it is shown in fig. 7, described step S220 comprises the steps that

Step S221: the docking collection of letters number is sampled, it is thus achieved that sample sequence；

Step S222: be grouped described sample sequence, forms the 3rd packet including N number of sample value；

Step S223: the N number of sample value including the 3rd packet each described carries out demapping, obtains N*k Individual bit；Wherein, described in described 3rd packet, N*k bit includes the even-odd check ratio of 1 bit Special；Usual described Parity Check Bits is last bit in described N*k bit.

Step S224: described N*k bit carries out even-odd check, forms check results；

Step S225: after utilizing described check results to make decisions, exports the described N*k-1 in described multidimensional code Information bit.

How step S211 specifically samples, forms sample sequence and may refer to prior art, at this The most no longer describe in detail.

The 3rd packet formed in step S222 includes N number of sample value；And each sample value correspondence herein A symbol in embodiment of the method one；Each sample value includes k bit.

Demapping in step S223 is relevant to the symbol mapping mode in embodiment of the method two, it is common that connect That receiving end and transmitting terminal consult in advance or determine based on certain communication protocol, the most how to carry out demapping can To see the demapping of various modes in prior art, the most no longer it is discussed in detail at this.

In the present embodiment because each multidimensional code the most individually carries Parity Check Bits, therefore carrying out very During even parity check, it is that each multidimensional code is carried out even-odd check；According to even-odd check it is known that the 3rd is grouped Corresponding bit information is in transmitting procedure or in the signal processing of receiving terminal, if go wrong, Abnormality processing flow process will be entered if going wrong, concrete as a large amount of mistake occurs time, if request retransmission or Rewrite certain some signal transacting being received end.

Verify when being based on described Parity Check Bits, form check results；After described check results is The continuous symbol judgement that carries out provides foundation, to improve the probability demodulating correct information bit.

When obviously carrying out signal demodulation in the present embodiment, have and realize easy advantage, and any two is many Bit in dimension code does not has relevance, thus is made without between multidimensional code internal bit relevance and processes, It is thus possible to directly utilize demodulation structure of the prior art to carry out above-mentioned demodulation.

Further, described step S224 comprises the steps that the N*k-1 information bit in described N*k bit Carry out mould two and add computing, obtain operation result；And when described operation result is consistent with described Parity Check Bits Time, confirm that verification is passed through, otherwise verify and do not pass through.Usual described information bit be in N*k bit before N*k bit.

The mode carrying out checksum coding in embodiment of the method two has multiple, wherein by the first packet In the mould two of each bit to add fortune be one therein, therefore when the present embodiment verifies, be grouped the 3rd In N*k-1 information bit carry out mould two and add computing, and result and Parity Check Bits are compared to reality Existing odd-even check；This mode has the advantage realizing simplicity.

When implementing, before performing step S223, described method also includes:

The first Euclidean distance is used to make decisions the N number of sample value in each described 3rd packet described, shape Become court verdict；

The described N number of sample value including the 3rd packet each described carries out demapping, including:

Demapping is carried out according to described court verdict.

Here each sample value corresponding point on coordinate system；Ideal point is also included in coordinate system；First Calculate the Euclidean distance between sample value and ideal point；By calculated Euclidean distance and set in advance first Euclidean distance compares, and determines the sequence that each sample value is corresponding.

The first Euclidean distance is used to make decisions in the present embodiment；It is to enter according to court verdict when demapping Row demapping.Court verdict may be caused inaccurate because of problems such as signal fadeouts during judgement Problem, and then inconsistent by cause in follow-up even-odd check.

For the problems referred to above, the most described method also includes:

When verification is obstructed out-of-date, the N number of sample value in each described 3rd packet described is used second European Distance makes decisions；Wherein, described first Euclidean distance is less than described second Euclidean distance.

Second Euclidean distance is more than the first Euclidean distance, makes decisions with the second Euclidean distance, the judgement obtained Will likely differ from utilizing the first Euclidean distance to court verdict, the court verdict obtained according to second distance It is again introduced into step S224 and S225 is likely to be obtained correct demodulating information；Such processing mode is permissible Heighten demodulation accuracy and reduce the problems such as re-transmission.

The signal that the present embodiment receiving terminal receives is probably single polarization state signal, it is also possible to dual-polarization state signal, Therefore in the present embodiment, described method also includes:

Sample in the docking collection of letters number, it is thus achieved that before sample sequence, a branch of signal received is divided into two Individual reception signal；Wherein, a described reception signal is the reception signal corresponding to X polarization state；Another For the reception signal corresponding to Y polarization state.

Generally X polarization state and Y polarization state are two orthogonal polarization states, are holding in an embodiment Row step S210 can use the methods such as coherent reception to receive signal by one before step S250, point Become two reception signals in X polarization state and Y polarization state, the most individually use step S210 to step S250 receives signal to each and is demodulated, it is clear that do not have polarization state between the signal of two polarization states Association, thus the problem not havinging inefficacy.

Apparatus embodiments one:

As shown in Figure 8, the present embodiment provides a kind of multidimensional code processing system, and described system includes:

Transmitting terminal 101, for according to input message sequence, forming the multidimensional code that dimension is 2*N；Wherein, Described N is the symbolic number that a described multidimensional code includes；One described multidimensional code includes N*k-1 information ratio Spy and 1 parity bits；And send described multidimensional code；Described k is that each described symbol includes Bit number；

Receiving terminal 102, is used for receiving described multidimensional code；And receiving terminal demodulates described multidimensional code, obtain described N*k-1 information bit in multidimensional code.

The described multidimensional code that system described in the present embodiment may be used in embodiment of the method one processes offer Hardware configuration, it is possible to technical scheme arbitrarily described in implementation method embodiment one, thus have can basis The advantage that multidimensional code is verified by the self-contained Parity Check Bits of multidimensional code, and it is being applied to dual-polarization During state, it is not result in X polarization state and Y polarization state interfering the problem causing demodulation to be lost efficacy；And multidimensional Code dimension be only dependent upon the symbolic number that multidimensional code includes, it is clear that the device described in the present embodiment be one can Control the system of multidimensional code dimension flexibly.

Described transmitting terminal 101, specifically for obtaining input message sequence；Described input message sequence is carried out Packet, obtains including the first packet of N*k-1 information bit of continuous distributed in described input message sequence； First packet each described is carried out checksum coding, obtains including the second packet of N*k bit； Wherein, described N*k bit includes the Parity Check Bits of 1 bit；And described second packet is depended on Secondary it is mapped as N number of symbol.

Described receiving terminal 102, specifically for the reception signal including at least one multidimensional code is sampled, Obtain sample sequence；Described sample sequence is grouped, forms the 3rd packet including N number of sample value；Right N number of sample value that each described 3rd packet includes carries out demapping, obtains N*k bit；Wherein, institute State N*k bit described in the 3rd packet and include the Parity Check Bits of 1 bit；By described N*k ratio Spy carries out even-odd check, forms check results；After utilizing described check results to make decisions, export described many Described N*k-1 information bit in dimension code.

The most described multidimensional code can be applied in light signal transmission system, the most described receiving terminal Connected by photoconduction between 101 and receiving terminal 102, concrete as connected by kilomega optic fiber.

Transmitting terminal 101 described in the present embodiment includes at least one multidimensional code for forming described multidimensional code and transmission The device of signal, concrete such as optical signal transmitter.Described receiving terminal 102 can be to receive described multidimensional code, And demodulate the device of described multidimensional code, concrete such as structures such as optical signal receivers.

Apparatus embodiments two:

As it is shown in figure 9, the present embodiment provides transmitting terminal, described device includes:

Modulating unit 110, for according to input message sequence, forming the multidimensional code that dimension is 2*N；Wherein, Described N is the symbolic number that a described multidimensional code includes；One described multidimensional code includes N*k-1 information ratio Spy and 1 parity bits；Described k is the bit number that each described symbol includes；

Transmitting element 120, is used for sending described multidimensional code.

Described modulating unit 110 can include processor or process chip and storage medium；Described processor or place Connected by bus between reason chip and storage medium.On described storage medium, storage has executable code；Institute State processor or process chip by reading and running described executable code, it is possible to achieve including information bit Modulation with the multidimensional code of Parity Check Bits.

Described transmitting element 120 can include communication interface, for sending the signal including described multidimensional code.Tool Body send signal be based on as described in the signal that formed of multidimensional code.

Modulating unit described in the described transmitting terminal of the present embodiment, can be modulation chip in prior art, described Transmitting element can be optical signal communications interface；Provide for the multidimensional code processing method described in embodiment of the method two Realize hardware.

Further, as shown in Figure 10, described modulating unit includes:

Acquisition module 111, is used for obtaining input message sequence；

First grouping module 112, for being grouped described input message sequence, obtains including described defeated Enter the first packet of N*k-1 information bit of continuous distributed in information sequence；

Check code module 113, for the first packet each described is carried out checksum coding, obtains The second packet including N*k bit；Wherein, described N*k bit includes the odd even school of 1 bit Test bit；

Mapping block 114, for being mapped as N number of symbol successively by described second packet；

The concrete structure of described acquisition module 111 can include information receiving interface, specifically such as receiving interface, as Information is received from peripheral hardware；Concrete such as wired or wireless receiving interface；Wireless receiving interface can include reception antenna； Described cable network reception interface can include cable interface or fiber optic cable interface.Described acquisition module 111 may also include people Machine interactive interface, touch screen or the mode such as keyboard, mouse input user's instruction so that as described in being converted into defeated Enter information sequence.Described input message sequence specifically can include 01 sequence.

The concrete structure of described first grouping module 112, check code module 113 and mapping block 114 can Including processor and storage medium；Connected by bus between described processor and storage medium.Described storage On medium, storage has executable code；Described processor can be held by reading and running described executable code Above-mentioned first grouping module 112 of row, check code module 113 and the function of mapping block 114 correspondence.Institute Stating the first grouping module 112, check code module 113 and mapping block 114 can be individually corresponding different Processor, it is also possible to integrated corresponding to same processor.When integrated corresponding to same processor time, described place Reason device uses the mode of time division multiplex or concurrent thread to perform the first grouping module 112, check code module 113 And the function of mapping block 114.Described processor can be application processor AP, digital signal processor DSP, programmable array PLC, Micro-processor MCV or sincere advice processor CUP etc. have signal capabilities Process structure.

Transmitting terminal described in the present embodiment, when carrying out multidimensional code modulation, each multidimensional code includes very the most voluntarily Even parity check bit, and the even-odd check between multidimensional code need not be carried out, thus it is applied to the multidimensional of dual-polarization state In code modulated process, the association between multidimensional code will not be produced and i.e. produce the association of polarization state such that it is able to profit Carry out the demodulation of the multidimensional code of this device generation by structures such as existing coherent demodulations, thus have and existing skill The compatible strong advantage of art.

Obviously the dimension of multidimensional code described in the present embodiment is equal to 2*N, it is clear that only determine that multidimensional code includes symbolic number； Obviously the dimension of multidimensional code can be controlled flexibly by adjusting symbolic number.

Further, described check code module 113, specifically for by each bit in described first packet Carry out mould two summation operation, obtain described Parity Check Bits；And add described Parity Check Bits to institute State in the first packet, form described second packet.

Parity Check Bits module 113 described in the present embodiment specifically can include various forms of logic gates group The process chip become, can carry out described mould two summation operation.The present embodiment has further refined described school Test the structure of coding module 113, the advantage with simple in construction.

Described device also includes:

Associative cell, for forming described multidimensional code and the institute of formation in described Y polarization state in X polarization state State multidimensional code to be associated, form a modulated signal；

Transmitting element, specifically for sending described modulated signal.

Described associative cell is the function knot that the multidimensional code in different polarization states is merged into a modulation symbol Structure, the association the most how realized between multidimensional code may refer to prior art, the most no longer expands at this.

Transmitting terminal described in the present embodiment, can apply to the modulation of the signal of telecommunication, it is also possible to be applied to optical signal Modulation, be chosen as the modulation of optical signal in the present embodiment, the described modulated signal the most now formed is light Signal；Send described modulated signal to include being coupled in optical signal channels optical signal, concrete as in optical fiber. Therefore at this moment, described transmitting element can include fiber coupler, for the optical signal of modulation number is coupled to light In signaling channel.

Transmitting terminal described in summary the present embodiment is that the multidimensional code modulator approach described in embodiment of the method two carries Having supplied to realize hardware, same to have the extension flexibility of multidimensional code dimension good and compatible with prior art strong Advantage.

Apparatus embodiments three:

As shown in figure 11, the present embodiment provides a kind of receiving terminal, and described receiving terminal includes:

Receive unit 210, be used for receiving described multidimensional code；Wherein, the dimension of described multidimensional code is 2*N； Described N is the symbolic number that a described multidimensional code includes；One described multidimensional code includes N*k-1 information ratio Spy and 1 parity bits；Described k is the bit number that each described symbol includes；

Demodulating unit 220, is used for demodulating described multidimensional code, obtains N*k-1 information in described multidimensional code Bit.

The unit 210 that receives described in the present embodiment is the communication interface receiving and including described multidimensional code, described logical Letter interface is concretely such as fiber optic cable interface etc..

Described demodulating unit 220 can include processor or process chip and storage medium；Described processor or place Connected by bus between reason chip and storage medium.On described storage medium, storage has executable code；Institute State processor or process chip by reading and running described executable code, it is possible to achieve including information bit Demodulation with the multidimensional code of Parity Check Bits.

As shown in figure 12, described demodulating unit, including:

Sampling module 211, is used for docking the collection of letters number and samples, it is thus achieved that sample sequence；

Second grouping module 222, for being grouped described sample sequence, is formed and includes N number of sample value 3rd packet；

De-mapping module 233, carries out demapping for the N number of sample value including the 3rd packet each described, Obtain N*k bit；Wherein, described in described 3rd packet, N*k bit includes the strange of 1 bit Even parity check bit；

Correction verification module 224, for carrying out even-odd check by described N*k bit；

Output module 225, after being used for utilizing described check results to make decisions, exports in described multidimensional code Described N*k-1 information bit.

Described sampling module the 211, second grouping module 222, De-mapping module 223, correction verification module 224 and The concrete structure of output module 225 can include processor and storage medium；Described processor and storage medium it Between connected by bus.On described storage medium, storage has executable code；Described processor is by reading also Run described executable code and can perform above-mentioned sampling module the 211, second grouping module 222, demapping mould Block 223, correction verification module 224 and the function of output module 225 correspondence.

Described sampling module the 211, second grouping module 222, De-mapping module 223, correction verification module 224 and Output module 225 can independent corresponding different processor, it is also possible to integrated corresponding to same processor.When Integrated corresponding to same processor time, described processor uses the mode of time division multiplex or concurrent thread to perform institute State sampling module the 211, second grouping module 222, De-mapping module 223, correction verification module 224 and output mould The function of block 225.Described processor can be application processor AP, digital signal processor DSP, can Programmed array PLC, Micro-processor MCV or sincere advice processor CUP etc. have the process structure of signal capabilities.

Receiving terminal described in the present embodiment carry out multidimensional code demodulation time can continue to use the most of the prior art Demodulation structure, is verified based on the self-contained parity bits of multidimensional code by described correction verification module, nothing The association verification between the multidimensional code of X and Y polarization state need to be carried out, thus do not have the problem that demodulation was lost efficacy； And the dimension of described multidimensional code determines the symbolic number that this multidimensional code is carried, can be flexible by the control of symbolic number Regulate and control described multidimensional code temperature.

Further, described correction verification module 224, specifically for by the described N*k-1 in described N*k bit Information bit carries out mould two and adds computing, obtains operation result；And when described operation result and described even-odd check When bit is consistent, confirms that verification is passed through, otherwise verify and do not pass through.Front N*k-1 in usual described N*k bit Bit is described information bit, and last bit is described Parity Check Bits.

The specifically including of the present embodiment correction verification module 224 has mould two and adds the calculator of computing or have mould two and add The structures such as the processor of calculation function.The present embodiment embodies described verification on the basis of above-mentioned further The structure of module 224.

Described receiving terminal also includes:

Judging module, for carrying out demapping in the described N number of sample value including the 3rd packet each described Before, the first Euclidean distance is used to make decisions the N number of sample value in each described 3rd packet described, Form court verdict；

Described De-mapping module, specifically for carrying out demapping according to described court verdict.

Judging module described in the present embodiment can include calculator or have computing function processor, described calculating Device for calculating the actual Euclidean distance between sample value and ideal value, may also include comparator by European for reality away from Compare from the first Euclidean distance, and form court verdict according to comparative result.

The structure of described De-mapping module may refer to the preceding sections of the present embodiment, is just not repeated at this.

Described judging module, is additionally operable to when verification is obstructed out-of-date, by each described 3rd packet described N number of sample value uses the second Euclidean distance to make decisions；Wherein, described first Euclidean distance is less than described second Euclidean distance.

Judging module, according to being currently which time judgement, selectes the Euclidean distance forming court verdict；In this reality Execute the second Euclidean distance in example and be more than the first Euclidean distance.Obvious described judging module can use different European Distance determines court verdict, it is possible to increase the accuracy of demodulation.

Device described in the present embodiment can be used for the demodulation of the multidimensional code of single polarization state, it is also possible to is applied to double inclined The demodulation of the multidimensional code of polarization state；When the multidimensional code being applied to dual-polarization state demodulates, described receiving terminal also includes:

Separate units, for sampling in the docking collection of letters number, it is thus achieved that before sample sequence, will received Bundle signal is divided into two to receive signal；Wherein, a described reception signal is the reception corresponding to X polarization state Signal；Another is the reception signal corresponding to Y polarization state.

The concrete structure of described separate units may correspond to processor equally；Described processor is held by code Row be capable of being divided into a branch of signal have certain polarization angle difference correspond respectively to X polarization state and Multiple reception signals of Y polarization state.The structure of described processor can be found in the preceding sections of the present embodiment, Just it is not repeated at this.

Demodulating equipment described in the present embodiment can be used for signal of telecommunication demodulation and can also be used for the demodulation of optical signal, The present embodiment is chosen as optical signal demodulation device.

Below in conjunction with any of the above-described embodiment several concrete examples of offer:

Example one:

As shown in figure 13, based on palarization multiplexing QPSK (PM-QPSK), at two In polarization state, each via introducing two sign checks, (herein, described two sign checks represent a multidimensional code Including 2 symbols), make the QPSK modulation of two dimension expand to four-dimensional modulation, its spectrum efficiency and light letter Make an uproar than OSNR properties equivalent in existing PS-QPSK.Specific implementation process comprises the following steps:

Step 301 and step 302: input, with the random binary sequence that 3 bits are a group, will every time 3 bits of input carry out mould two summation and obtain check bit, and add this check bit of acquisition to input 3 bits after form 4 bit groupings, complete checksum coding.Herein, described random binary sequence Row are equivalent to include the first packet of 3 bits.The second packet that described 4 bit groupings are the most above-mentioned.

Step 303 and step 304: 4 bit groupings binary signals of input are advised according to gray mappings Rule is mapped as two continuous print QPSK symbols successively, and each QPSK symbol contains 2 bit informations.

Step 305: using step 303,304 output as two of PM-QPSK modulator just Handing over the modulation data in polarization state, the optical signal in two polarization states is input to optical fiber letter after polarization coupling In road.

Step 306: receive optical signal from fiber channel and be demodulated, believing through coherent reception numeral Number process respectively obtains the QPSK symbol sample sequence in two polarization states.

Step 307 and step 308: the QPSK symbol sample sequence of input is grouped, the completeest Become the judgement of 2 symbol sample values；Specifically, two symbols are obtained respectively according to minimum Eustachian distance criterion Maximum likelihood decision constellation point, two judgement bits corresponding to symbol are verified.If verification is passed through, Then think that judgement is correct；If verification is not inconsistent, then it is assumed that in the two symbol, deviation judgement constellation point distance is more Big symbol judgement mistake, changes the original sentence to this symbol as secondary little Euclidean distance constellation point.

Herein, described minimum euclidean distance is equivalent to the first Euclidean distance in above-described embodiment；Described time Little Euclidean distance is equivalent to the second Euclidean distance in above-described embodiment.

Example two:

As shown in figure 14, based on palarization multiplexing QPSK (PM-QPSK), at two Each via introducing four sign checks in polarization state, the QPSK modulation of two dimension is made to expand to octuple modulation. Specific implementation process comprises the following steps:

Step 401 and step 402: input, with the random binary sequence that 7 bits are a group, will every time 7 bits of input carry out mould two summation and obtain check bit, and check bit is added to 7 bits of input Rear formation 8 bit groupings, completes checksum coding.

Step 403 and step 404: 8 bit groupings binary signals of input are advised according to gray mappings Rule is mapped as four continuous print QPSK symbols successively, and each QPSK symbol contains 2 bit informations.

Step 405: using step 403,404 output as two of PM-QPSK modulator just Handing over the modulation data in polarization state, the optical signal in two polarization states is input to optical fiber letter after polarization coupling In road.

Step 406: receive optical signal from fiber channel and be demodulated, believing through coherent reception numeral Number process respectively obtains the QPSK symbol sample sequence in two polarization states.

Step 407 and step 408: the QPSK symbol sample sequence of input is grouped, the completeest Become the judgement of four symbol sample values；Specifically, four symbols are obtained respectively according to minimum Eustachian distance criterion Maximum likelihood decision constellation point, four judgement whole bit informations corresponding to symbol are carried out odd even school Test.If verification is passed through, then it is assumed that judgement is correct；If verification is not inconsistent, then it is assumed that these four symbols deviate The symbol judgement mistake that judgement constellation point distance is bigger, changes the original sentence to this symbol as secondary little Euclidean distance constellation Point.

The simulated effect to the received signal quality of receiving terminal for example one and example two shown in Figure 15 Figure.

Imitate back-to-back with the PM-QPSK system of 30GBaud character rate (120Gbps bit rate) True performance is frame of reference, and investigating the bit error rate is 10^-3Time system needed for OSNR (OSNR) condition, Can be seen that the improvement of the spectrum efficiency of multi-dimensional modulation system and OSNR performance is specific as follows:

1) two sign check QPSK systems of 30Gbaud character rate are wanted relative to the OSNR of frame of reference Ask and reduce about 2.2dB；

2) two sign check QPSK systems of 40Gbaud character rate (120Gbps significant bit speed) The OSNR of relative frame of reference of uniting requires to reduce about 0.9dB；

3) four sign check QPSK systems of 30Gbaud character rate are relative to the OSNR of frame of reference Requirement reduces about 1.55dB；

4) four sign check QPSK of 34.285Gbaud character rate (120Gbps significant bit speed) System requires to reduce about 1dB relative to the OSNR of frame of reference.

Multidimensional code modulation-demo-demodulation method described in the present embodiment, it is also possible to set based on PM-16QAM Meter, such as two sign check 16QAM are that four-dimensional modulation, spectrum efficiency and OSNR properties equivalent are in existing Some 128-SP-QAM；Three sign check 16QAM are sextuple modulation, optimize system further Spectrum efficiency and OSNR performance.

In several embodiments provided herein, it should be understood that disclosed equipment and method, Can realize by another way.Apparatus embodiments described above is only schematically, such as, The division of described unit, is only a kind of logic function and divides, and actual can have other division when realizing Mode, such as: multiple unit or assembly can be in conjunction with, or are desirably integrated into another system, or some are special Levy and can ignore, or do not perform.It addition, the coupling each other of shown or discussed each part, Or direct-coupling or communication connection can be the INDIRECT COUPLING by some interfaces, equipment or unit or logical Letter connect, can be electrical, machinery or other form.

The above-mentioned unit illustrated as separating component can be or may not be physically separate, makees The parts shown for unit can be or may not be physical location, i.e. may be located at a place, Can also be distributed on multiple NE；Can select according to the actual needs therein partly or entirely Unit realizes the purpose of the present embodiment scheme.

It addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing module In, it is also possible to it is that each unit is individually as a unit, it is also possible to two or more unit collection Become in a unit；Above-mentioned integrated unit both can realize to use the form of hardware, it would however also be possible to employ Hardware adds the form of SFU software functional unit and realizes.

One of ordinary skill in the art will appreciate that: realize all or part of step of said method embodiment Can be completed by the hardware that programmed instruction is relevant, aforesaid program can be stored in a computer-readable Taking in storage medium, this program upon execution, performs to include the step of said method embodiment；And it is aforementioned Storage medium include: movable storage device, read-only storage (ROM, Read-Only Memory), Random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various The medium of program code can be stored.

The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited to In this, any those familiar with the art, can be easily in the technical scope that the invention discloses Expect change or replace, all should contain within protection scope of the present invention.Therefore, the protection of the present invention Scope should be as the criterion with described scope of the claims.

Claims (27)

1. a multidimensional code processing method, it is characterised in that described method includes:

Transmitting terminal, according to input message sequence, forms the multidimensional code that dimension is 2*N；Wherein, described N is one The symbolic number that individual described multidimensional code includes；One described multidimensional code include N*k-1 information bit and 1 strange Even parity check bit；Described k is the bit number that each described symbol includes；

Transmitting terminal sends described multidimensional code；

Receiving terminal receives described multidimensional code；

Receiving terminal demodulates described multidimensional code, obtains N*k-1 information bit in described multidimensional code.

Method the most according to claim 1, it is characterised in that

Described transmitting terminal, according to input message sequence, forms the multidimensional code that dimension is 2*N, including:

Obtain input message sequence；

Described input message sequence is grouped, obtains including continuous distributed in described input message sequence First packet of N*k-1 information bit；

First packet each described is carried out checksum coding, obtains including second point of N*k bit Group；Wherein, described N*k bit includes the Parity Check Bits of 1 bit；

Described second packet is mapped as N number of symbol successively.

Method the most according to claim 1, it is characterised in that

Described receiving terminal demodulates described multidimensional code, obtains N*k-1 information bit in described multidimensional code, bag Include:

The reception signal including at least one multidimensional code is sampled, it is thus achieved that sample sequence；

Described sample sequence is grouped, forms the 3rd packet including N number of sample value；

The N number of sample value including the 3rd packet each described carries out demapping, obtains N*k bit；Its In, described in described 3rd packet, N*k bit includes the Parity Check Bits of 1 bit；Described k The bit number included for each described symbol；

Described N*k bit is carried out even-odd check, forms check results；

After utilizing described check results to make decisions, export the described N*k-1 information bit in described multidimensional code.

4. a multidimensional code processing method, it is characterised in that described method includes:

According to input message sequence, form the multidimensional code that dimension is 2*N；Wherein, described N is described in one The symbolic number that multidimensional code includes；One described multidimensional code includes N*k-1 information bit and 1 odd-even check Bit；Described k is the bit number that each described symbol includes；

Send described multidimensional code.

Method the most according to claim 5, it is characterised in that

Described foundation input message sequence, forms the multidimensional code that dimension is 2*N, including:

Obtain input message sequence；

Described input message sequence is grouped, obtains including continuous distributed in described input message sequence First packet of N*k-1 information bit；

First packet each described is carried out checksum coding, obtains including second point of N*k bit Group；Wherein, described N*k bit includes the Parity Check Bits of 1 bit；

Described second packet is mapped as N number of symbol successively.

Method the most according to claim 4, it is characterised in that

Described first packet each described is carried out checksum coding, obtain including the of N*k bit Two packets, including:

Each bit in described first packet is carried out mould two summation operation, obtains described Parity Check Bits；

Described Parity Check Bits is added in described first packet, form described second packet.

Method the most according to claim 4, it is characterised in that

Described method also includes:

Close forming described multidimensional code in X polarization state with the described multidimensional code of formation in described Y polarization state Connection, forms a modulated signal；

Send described modulated signal.

Method the most according to claim 7, it is characterised in that

Described modulated signal is optical signal；

The described modulated signal of described transmission includes:

Described optical signal is coupled in optical signal channels.

9. a multidimensional code processing method, it is characterised in that described method includes:

Receiving terminal receives described multidimensional code；The dimension of described multidimensional code is 2*N；Described N be one described many The symbolic number that dimension code includes；One described multidimensional code includes N*k-1 information bit and 1 odd-even check ratio Special；Described k is the bit number that each described symbol includes；

Receiving terminal demodulates described multidimensional code, obtains described N*k-1 the information bit in described multidimensional code.

Method the most according to claim 9, its spy is characterised by,

Described receiving terminal demodulates described multidimensional code, obtains described N*k-1 the information bit in described multidimensional code, Including:

The reception signal including at least one multidimensional code is sampled, it is thus achieved that sample sequence；

Described sample sequence is grouped, forms the 3rd packet including N number of sample value；

The N number of sample value including the 3rd packet each described carries out demapping, obtains N*k bit；Its In, described in described 3rd packet, N*k bit includes the Parity Check Bits of 1 bit；

Described N*k bit is carried out even-odd check, forms check results；

After utilizing described check results to make decisions, export the described N*k-1 information bit in described multidimensional code.

11. methods according to claim 9, it is characterised in that

Described described N*k bit is carried out even-odd check, form check results, including:

Front N*k-1 bit in described N*k bit is carried out mould two and adds computing, obtain operation result；

When described operation result is consistent with described Parity Check Bits, confirms that verification is passed through, otherwise verify not Pass through.

12. methods according to claim 10, it is characterised in that

Before the described N number of sample value including the 3rd packet each described carries out demapping, described method Also include:

The first Euclidean distance is used to make decisions the N number of sample value in each described 3rd packet described, shape Become court verdict；

The described N number of sample value including the 3rd packet each described carries out demapping, including:

Demapping is carried out according to described court verdict.

13. methods according to claim 12, it is characterised in that

Described method also includes:

When verification is obstructed out-of-date, the N number of sample value in each described 3rd packet described is used second European Distance makes decisions；Wherein, described first Euclidean distance is less than described second Euclidean distance.

14. methods according to claim 13, it is characterised in that

Described method also includes:

Sample in the docking collection of letters number, it is thus achieved that before sample sequence, a branch of signal received is divided into two Receive signal；Wherein, a described reception signal is the reception signal corresponding to X polarization state；Another be Reception signal corresponding to Y polarization state.

15. 1 kinds of multidimensional code processing systems, it is characterised in that described system includes:

Transmitting terminal, for according to input message sequence, forming the multidimensional code that dimension is 2*N；Wherein, described N is the symbolic number that a described multidimensional code includes；One described multidimensional code include N*k-1 information bit and 1 parity bits；And send described multidimensional code；Described k is the bit that each described symbol includes Number；

Receiving terminal, is used for receiving described multidimensional code；And receiving terminal demodulates described multidimensional code, obtain described multidimensional N*k-1 information bit in Ma.

16. systems according to claim 15, it is characterised in that

Described transmitting terminal, specifically for obtaining input message sequence；Described input message sequence is grouped, Obtain including the first packet of N*k-1 information bit of continuous distributed in described input message sequence；To often One described first packet carries out checksum coding, obtains including the second packet of N*k bit；Wherein, Described N*k bit includes the Parity Check Bits of 1 bit；And described second packet is mapped successively For N number of symbol.

17. systems according to claim 15, it is characterised in that

Described receiving terminal, specifically for sampling to the reception signal including at least one multidimensional code, it is thus achieved that Sample sequence；Described sample sequence is grouped, forms the 3rd packet including N number of sample value；To each N number of sample value that individual described 3rd packet includes carries out demapping, obtains N*k bit；Wherein, described Described in three packets, N*k bit includes the Parity Check Bits of 1 bit；Described N*k bit is entered Row even-odd check, forms check results；After utilizing described check results to make decisions, export described multidimensional code In described N*k-1 information bit.

18. 1 kinds of transmitting terminals, it is characterised in that described transmitting terminal includes:

Modulating unit, for according to input message sequence, forming the multidimensional code that dimension is 2*N；Wherein, institute Stating N is the symbolic number that a described multidimensional code includes；One described multidimensional code includes N*k-1 information bit With 1 parity bits；Described k is the bit number that each described symbol includes；

Transmitting element, is used for sending described multidimensional code.

19. transmitting terminals according to claim 18, it is characterised in that

Described modulating unit, including:

Acquisition module, is used for obtaining input message sequence；

First grouping module, for being grouped described input message sequence, obtains including described input letter First packet of N*k-1 information bit of continuous distributed in breath sequence；

Check code module, for the first packet each described is carried out checksum coding, including Second packet of N*k bit；Wherein, described N*k bit includes the even-odd check ratio of 1 bit Special；

Mapping block, for being mapped as N number of symbol successively by described second packet.

20. transmitting terminals according to claim 19, it is characterised in that

Described check code module, sues for peace fortune specifically for each bit in described first packet is carried out mould two Calculate, obtain described Parity Check Bits；And described Parity Check Bits is added in described first packet, Form described second packet.

21. transmitting terminals according to claim 18, it is characterised in that

Described device also includes:

Associative cell, for forming described multidimensional code and the institute of formation in described Y polarization state in X polarization state State multidimensional code to be associated, form a modulated signal；

Transmitting element, specifically for sending described modulated signal.

22. 1 kinds of receiving terminals, it is characterised in that described receiving terminal includes:

Receive unit, be used for receiving described multidimensional code；Wherein, the dimension of described multidimensional code is 2*N；Described N is the symbolic number that a described multidimensional code includes；One described multidimensional code include N*k-1 information bit and 1 parity bits；Described k is the bit number that each described symbol includes；

Demodulating unit, is used for demodulating described multidimensional code, obtains N*k-1 information bit in described multidimensional code.

23. receiving terminals according to claim 22, it is characterised in that

Described demodulating unit, including:

Sampling module, for sampling to the reception signal including at least one described multidimensional code, it is thus achieved that sample Value sequence；

Second grouping module, for being grouped described sample sequence, is formed and includes the 3rd of N number of sample value Packet；Wherein, the symbolic number of each multidimensional code that described N represents；

De-mapping module, carries out demapping for the N number of sample value including the 3rd packet each described, To N*k bit；Wherein, described in described 3rd packet, N*k bit includes the odd even of 1 bit Check bit；

Correction verification module, for carrying out even-odd check by described N*k bit；

Output module, after being used for utilizing described check results to make decisions, export in described multidimensional code is described N*k-1 information bit.

24. receiving terminals according to claim 23, it is characterised in that

Described correction verification module, specifically for carrying out mould by the described N*k-1 information bit in described N*k bit Two add computing, obtain operation result；And when described operation result is consistent with described Parity Check Bits, really Recognize verification to pass through, otherwise verify and do not pass through.

25. receiving terminals according to claim 23, it is characterised in that

Described receiving terminal also includes:

Judging module, for carrying out demapping in the described N number of sample value including the 3rd packet each described Before, the first Euclidean distance is used to make decisions the N number of sample value in each described 3rd packet described, Form court verdict；

Described De-mapping module, specifically for carrying out demapping according to described court verdict.

26. receiving terminals according to claim 25, it is characterised in that

Described judging module, is additionally operable to when verification is obstructed out-of-date, by each described 3rd packet described N number of sample value uses the second Euclidean distance to make decisions；Wherein, described first Euclidean distance is less than described second Euclidean distance.

27. receiving terminals according to claim 22, it is characterised in that

Described device also includes:

Separate units, for sampling in the docking collection of letters number, it is thus achieved that before sample sequence, will received Bundle signal is divided into two to receive signal；Wherein, a described reception signal is the reception corresponding to X polarization state Signal；Another is the reception signal corresponding to Y polarization state.