CN107222293B

CN107222293B - Information transmission method and device, electronic equipment and storage medium

Info

Publication number: CN107222293B
Application number: CN201710344718.6A
Authority: CN
Inventors: 牛凯; 董超; 李燕; 戴金晟
Original assignee: Beijing University of Posts and Telecommunications
Current assignee: Beijing University of Posts and Telecommunications
Priority date: 2017-05-16
Filing date: 2017-05-16
Publication date: 2020-03-20
Anticipated expiration: 2037-05-16
Also published as: CN107222293A

Abstract

The embodiment of the invention provides an information transmission method, an information transmission device, electronic equipment and a storage medium, wherein the information transmission method comprises the following steps: determining at least one polarization code transmission channel of the generalized frequency division multiplexing GFDM system according to a two-step channel polarization transformation method; determining the reliability of each polarization code transmission channel; acquiring an information vector to be transmitted, encoding the information vector by an encoding method, and modulating the encoded information vector by a preset signal modulation method to obtain a transmitted information vector; selecting a target polarization code transmission channel with the same number of bits as the number of bits for sending the information vector and high reliability from at least one polarization code transmission channel; and transmitting the sending information vector to a receiving end through the target polarization code transmission channel. The embodiment of the invention can improve the information transmission performance of the GFDM system by utilizing the information transmission method of combining the polarization code and the GFDM system.

Description

Information transmission method and device, electronic equipment and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information transmission method and apparatus, an electronic device, and a storage medium.

Background

The GFDM (Generalized Frequency Division Multiplexing) system is a flexible non-orthogonal multi-carrier system. The carrier modulation is carried out based on a time-frequency two-dimensional data block structure, system parameters can be flexibly configured to meet the requirements of different application scenes, the out-of-band power leakage of the system can be effectively reduced, and the method is one of important support technologies of a future mobile communication system.

In the actual digital communication process, a channel for transmitting information needs to be encoded to improve the security and reliability of the transmitted information. The channel coding mode in the existing GFDM system is Turbo coding. The specific implementation process is as follows: after information to be transmitted is subjected to Cyclic Redundancy Check (CRC) coding at a transmitting end of the GFDM system, a plurality of transmission channels of the information are coded by Turbo coding, then the information is converted into codeword vectors by interleaving, and the codeword vectors are modulated by the quadrature amplitude modulation technique of the GFDM system, so as to obtain a plurality of symbol information in the codeword vectors. The symbol information is modulated by GFDM modulation technology, and the symbol information modulated by GFDM is superposed to obtain a modulated signal. And adding the cyclic prefix to the modulation signal to obtain a sending information vector. The transmission information vector is transmitted to the receiving end through a transmission channel of the GFDM system. In the modulation process, a corresponding filter carries out impulse forming on each symbol information, and the impulse forming ensures that all subcarriers are not orthogonal any more. All the filters are obtained by performing time-frequency domain cyclic shift on a unified prototype filter.

In the existing GFDM system, a filter exists in a transmission channel to perform information filtering on each symbol in a codeword vector, and filtering causes interference to exist between symbol information in transmitted information, and the interference between the symbol information appears as inter-carrier interference in a frequency domain, so that the performance of information transmission of the GFDM system is low.

Disclosure of Invention

The embodiment of the invention aims to provide an information transmission method, an information transmission device, electronic equipment and a storage medium, so as to improve the information transmission performance of a GFDM system.

In a first aspect, an embodiment of the present invention discloses an information transmission method, including:

determining at least one polarization code transmission channel of the generalized frequency division multiplexing GFDM system according to a two-step channel polarization transformation method;

determining the reliability of each polarization code transmission channel;

acquiring an information vector to be transmitted, encoding the information vector by an encoding method, and modulating the encoded information vector by a preset signal modulation method to obtain a transmitted information vector, wherein the encoding method at least comprises a polar code encoding method;

selecting a target polarization code transmission channel with the same number of bits as the number of bits of the sent information vector and high reliability from the at least one polarization code transmission channel;

and transmitting the sending information vector to a receiving end through the target polarization code transmission channel, so that the receiving end processes the sending information vector through a preset demodulation method and a decoding method to obtain the information vector.

Optionally, the determining at least one polarization code transmission channel of the GFDM system according to the two-step channel polarization transformation method includes:

in a GFDM system, at least one polarization code transmission channel of the GFDM system is determined by GFDM channel conversion and binary channel conversion.

Optionally, in the GFDM system, determining at least one polarization code transmission channel of the GFDM system through a GFDM channel transform and a binary channel transform includes:

in a GFDM system, a bit vector of a preset transmission information vector is modulated through Quadrature Amplitude Modulation (QAM) to obtain a symbol vector of the preset transmission information vector, each symbol of the symbol vector contains the number of bits corresponding to the modulation order of the QAM, and according to the number of all symbol bits in the symbol vector, a channel of the GFDM system is divided into at least one channel with the same number of all symbol bits in the symbol vector;

and obtaining at least one polarization code transmission channel of the GFDM system by a preset grid map mapping technology of preset binary channel transformation on the at least one channel.

Optionally, the determining the reliability of each polarization code transmission channel includes:

determining the capacity of each transmission channel through a Monte Carlo simulation algorithm, and determining the capacity of a preset binary additive white Gaussian noise channel model;

when the capacity of the preset binary additive white Gaussian noise channel model is equal to the capacity of each polarization code transmission channel, determining the equivalent noise variance of each polarization code transmission channel;

determining a mean value of log likelihood ratio Gaussian distribution of each polarization code transmission channel through a Gaussian approximation algorithm and an equivalent noise variance of each polarization code transmission channel;

and determining the mean value of the log-likelihood ratio of each polarization code transmission channel to be the reliability of the polarization code transmission channel.

Optionally, the obtaining an information vector to be transmitted, encoding the information vector to be transmitted by using an encoding method, and modulating the encoded information vector to be transmitted by using a preset signal modulation method to obtain a transmitted information vector includes:

acquiring an information vector to be transmitted, and coding the information vector to be transmitted through Cyclic Redundancy Check (CRC) coding to form an information vector to be transmitted with a check sequence;

coding the information vector to be sent with the check sequence in a polar code coding mode to form a polar code coding information vector;

interleaving the polar code coding information vectors to obtain polar code coding information vectors corresponding to QAM modulation;

modulating the polarization code coding information vector through the QAM and the GFDM to obtain a modulation signal;

and adding a cyclic prefix to the modulation signal to obtain the sending information vector.

Optionally, the interleaving the polar code encoded information vector by interleaving to obtain a polar code encoded information vector corresponding to the QAM modulation includes:

and carrying out equal-capacity segmentation on a channel corresponding to each orthogonal information vector in the polarization code coding information vectors to obtain the polarization code coding information vectors corresponding to QAM modulation.

In a second aspect, an embodiment of the present invention further discloses an information transmission apparatus, including:

the device comprises a polarization code transmission channel determining module, a polarization code transmission channel determining module and a polarization conversion module, wherein the polarization code transmission channel determining module is used for determining at least one polarization code transmission channel of the generalized frequency division multiplexing GFDM system according to a two-step channel polarization conversion method;

the reliability determining module is used for determining the reliability of each polarization code transmission channel;

the device comprises a sending information determining module, a receiving information determining module and a sending information determining module, wherein the sending information determining module is used for acquiring an information vector to be sent, encoding the information vector by an encoding method, and modulating the encoded information vector by a preset signal modulation method to obtain the sending information vector, and the encoding method at least comprises a polar code encoding method;

a selecting module, configured to select a target polar code transmission channel with the same number of bits as the number of bits of the sent information vector and high reliability from the at least one polar code transmission channel;

and the sending module is used for transmitting the sending information vector to a receiving end through the target polarization code transmission channel so that the receiving end processes the sending information vector through a preset demodulation method and a decoding method to obtain the information vector.

Optionally, the polar code transmission channel determining module is specifically configured to determine, in the GFDM system, at least one polar code transmission channel of the GFDM system through GFDM channel transformation and binary channel transformation.

Optionally, the polar code transmission channel determining module includes:

the channel division submodule is used for obtaining a symbol vector of a preset transmission information vector in a GFDM system by modulating the bit vector of the preset transmission information vector through Quadrature Amplitude Modulation (QAM), wherein each symbol of the symbol vector contains the number of bits corresponding to the modulation order of the QAM, and the channel of the GFDM system is divided into at least one channel with the same number of bits as all symbols in the symbol vector according to the number of bits of all symbols in the symbol vector;

and the polar code transmission channel determining submodule is used for obtaining at least one polar code transmission channel of the GFDM system through a preset grid map mapping technology of preset binary channel transformation on the at least one channel.

Optionally, the reliability determining module includes:

the capacity determining submodule is used for determining the capacity of each transmission channel through a Monte Carlo simulation algorithm and determining the capacity of a preset binary additive white Gaussian noise channel model;

the first calculation submodule is used for determining the equivalent noise variance of each polar code transmission channel when the capacity of the preset binary additive white Gaussian noise channel model is equal to the capacity of each polar code transmission channel;

the second calculation submodule is used for determining the mean value of the log-likelihood ratio of each polarization code transmission channel to the Gaussian distribution through a Gaussian approximation algorithm and the equivalent noise variance of each polarization code transmission channel;

and the reliability determining submodule is used for determining the mean value of the log-likelihood ratio of the polar code transmission channel to be the reliability of the polar code transmission channel aiming at each polar code transmission channel.

In a third aspect, an embodiment of the present invention further discloses an electronic device, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete mutual communication through the communication bus;

a memory for storing a computer program;

a processor for implementing the method steps according to the first aspect when executing a program stored in the memory.

In a fourth aspect, an embodiment of the present invention further discloses a computer-readable storage medium, in which a computer program is stored, and the computer program, when executed by a processor, implements the method steps as described in the first aspect.

The embodiment of the invention provides an information transmission method, an information transmission device, electronic equipment and a storage medium, wherein a polarization code implementation mode is utilized, a traditional GFDM system channel is divided through two-step channel polarization transformation to construct a polarization code transmission channel, at least one polarization code transmission channel with the same number of bits as that of information vectors to be sent and high reliability is selected from the polarization code transmission channel, and the at least one polarization code transmission channel is utilized to transmit information, so that the information vector is better adapted to a GFDM system when the information vector is transmitted by utilizing a polarization code coding mode, and the information transmission performance of the GFDM system is improved. In addition, polar codes are less complex to decode than Turbo codes.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flowchart of an information transmission method according to an embodiment of the present invention;

fig. 2 is a schematic diagram of two-step channel conversion of a GFDM system in an information transmission method according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a GFDM modulation process in an information transmission method according to an embodiment of the present invention;

fig. 4 is a channel capacity distribution diagram of at least one polar code transmission channel of an information transmission method according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a process of transmitting information vectors in a GFDM system by an information transmission method according to an embodiment of the present invention;

fig. 6(a) is a diagram showing a comparison result of block error rate performance simulation of different modulation orders under the conventional AWGN channel transmission in the GFDM system according to the embodiment of the present invention;

fig. 6(B) is a diagram illustrating a comparison result of block error rate performance simulation for different modulation orders under single-path rayleigh channel transmission according to an embodiment of the present invention;

fig. 6(C) is a diagram illustrating a comparison result of block error rate performance simulation with different configuration parameters under single-path rayleigh channel transmission according to the embodiment of the present invention;

fig. 7 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The present invention will be described in detail below with reference to specific examples.

To achieve the above object, an embodiment of the present invention discloses an information transmission method, as shown in fig. 1, where fig. 1 is a flowchart of an information transmission method according to an embodiment of the present invention, including:

s101, determining at least one polarization code transmission channel of the generalized frequency division multiplexing GFDM system according to a two-step channel polarization transformation method.

The polar code is a novel coding mode, which can realize the code construction of the capacity of a symmetric binary input discrete memoryless channel (such as a binary symmetric channel) and a binary erasure channel. In the embodiment of the invention, the polarization code which is well adapted to the channel of the GFDM system can be constructed by utilizing the inter-carrier interference characteristic of the GFDM system. When the polarization code is used for coding information, a polarization code transmission channel is firstly constructed, so that the channel of the GFDM system is more suitable for transmission of the polarization code coding information, the error performance of the GFDM system is reduced, and the information transmission performance of the GFDM system is improved.

In the embodiment of the invention, based on the principle of bit interleaving coding modulation, a plurality of channels suitable for polar code transmission are formed by separating the channels of a GFDM system through a two-step channel polarization change method, and at least one polar code transmission channel in the embodiment of the invention is correspondingly formed.

Specifically, the two-step channel polarization transformation method in the embodiment of the present invention adopts a GFDM channel transformation method and a binary channel transformation method, and separates channels at a sending end of a GFDM system to form at least one polarization code transmission channel.

S102, determining the reliability of each polarization code transmission channel.

After obtaining at least one polar code transmission channel of the GFDM system, the reliability of each polar code transmission channel can be calculated.

Specifically, a preset transmission information vector may be set,and correspondingly receiving a preset receiving information vector at a receiving end, wherein the preset sending information vector is a string of binary information vectors which are preset and known to contain 0 and 1. The preset sending information vector forms a preset receiving information vector at a receiving end correspondingly, and the preset receiving information vector obtains a symbol vector containing soft information after passing through an MMSE (Minimum mean square Error) receiver

Wherein the content of the first and second substances,

containing symbol information d in the preset transmission information vector of the corresponding transmitting terminal_nThe remaining symbol pairs d_nInterference and additive noise. Each bit in each symbol information occupies one channel to be transmitted in the transmission process, and the symbol information d_nIs denoted as b_n,jIts bit likelihood ratio is represented as Λ (b)_n,j)，b_n,jAnd Λ (b)_n,j) The corresponding random variables are respectively represented as B_n,jAnd L_n,j. And calculating the capacity of each transmission channel and the capacity of a preset binary additive white Gaussian noise channel model by a Monte Carlo simulation method. And then, determining the equivalent noise variance of each polarization code transmission channel by presetting that the capacity of a binary additive white Gaussian noise channel model is equal to the capacity of each polarization code transmission channel. And finally, determining the mean value of the log-likelihood ratio of each polarized code transmission channel to the Gaussian distribution through a Gaussian approximation algorithm and the equivalent noise variance of each polarized code transmission channel, and determining the mean value of each polarized code transmission channel as the reliability of each polarized code transmission channel.

S103, obtaining an information vector to be sent, coding the information vector by a coding method, and modulating the coded information vector by a preset signal modulation method to obtain the information vector to be sent, wherein the coding method at least comprises a polar code coding method.

After obtaining the reliability of each polarization code transmission channel, the sending end of the GFDM system can obtain the binary of v bitAnd preparing an information vector to be transmitted, and performing CRC on the information vector to be transmitted to obtain a signal vector containing V bits, wherein the signal vector contains original V information bits and a CRC check sequence of r bits, namely V is V + r. Obtaining a value containing V by a polarization code encoding method_cA coded information vector of bits. And modulating the coded information vector by a preset signal modulation method to obtain a sending information vector. The preset signal modulation method can be QAM, filtering data is formed through impulse forming of a filter after QAM, all the filtering data are overlapped to obtain a GFDM modulation signal, and a cyclic prefix is added to the GFDM modulation signal to obtain a sending information vector.

S104, selecting a target polarization code transmission channel with the same number of bits as the number of the bits for sending the information vector and high reliability from at least one polarization code transmission channel.

After the sending end of the GFDM system obtains the sending information vector, a plurality of high-reliability polarization code transmission channels with the same number of bits as the sending information vector can be further selected from at least one polarization code transmission channel of the GFDM system, and the selected plurality of polarization code transmission channels are used as target polarization code transmission channels for transmitting the polarization code information in the embodiment of the invention.

And S105, transmitting the sending information vector to a receiving end through a target polarization code transmission channel, so that the receiving end processes the sending information vector through a preset demodulation method and a decoding method to obtain the information vector.

The polarization code information passes through a target polarization code transmission channel of the GFDM system, residual polarization code transmission channels in at least one polarization code transmission channel of the GFDM system are filled with all 0 s or all 1 s, and the information is transmitted through at least one polarization code transmission channel of the GFDM system, so that a receiving end processes a transmitted information vector through a preset demodulation method and a decoding method, and an information vector is obtained.

The information transmission method provided by the embodiment of the invention utilizes a polarization code implementation mode, divides the traditional GFDM system channel into two steps of channel polarization transformation to construct a polarization code transmission channel, selects at least one polarization code transmission channel with the same number of bits as the information vector to be sent and high reliability from the polarization code transmission channel, and utilizes the at least one polarization code transmission channel to transmit information, so that the information vector is better adapted to the GFDM system when transmitted by utilizing a polarization code coding mode, and the information transmission performance of the GFDM system is improved.

Optionally, in an embodiment of the information transmission method according to the embodiment of the present invention, at least one polarization code transmission channel of the GFDM system is determined according to a two-step channel polarization transformation method, as shown in fig. 2. Fig. 2 is a schematic diagram of two-step channel conversion of a GFDM system in an information transmission method according to an embodiment of the present invention, including: in a GFDM system, at least one polarization code transmission channel of the GFDM system is determined by means of a GFDM channel conversion and a binary channel conversion.

First step, GFDM channel conversion: in the GFDM system, a bit vector of a preset transmission information vector is modulated through Quadrature Amplitude Modulation (QAM) to obtain a symbol vector of the preset transmission information vector, each symbol of the symbol vector contains the number of bits corresponding to the modulation order of the QAM, and according to the number of all symbol bits in the symbol vector, a channel of the GFDM system is divided into at least one channel with the same number of all symbol bits in the symbol vector.

In the embodiment of the invention, after the preset receiving information vector formed by the preset sending information vector is obtained through the sequential transmission of the sending end process of the GFDM system, the preset receiving information vector is obtained at the receiving end, the reliability of the polar code transmission channel is reversely deduced in sequence according to the preset receiving information vector, and finally, the target polar code transmission channel with high reliability is selected at the sending end for polar code information transmission.

Specifically, the sending-end information source generates a preset information vector b to be sent, which includes JN bits, and the preset information vector b to be sent may adopt all 0 or all 1 information vectors. G represents the cyclic shift relation of the impulse shaping filter in the time domain, and W represents the shift relation of the impulse shaping filter in the frequency domain, wherein W_1,1...W_N,1...W_I,J...W_N,JRepresenting that each bit of information in information vector to be sent correspondingly enters constellationA modulated transmission channel. J represents 2^JModulation order of QAM. The predetermined information vector b to be transmitted includes a complex data block d of N symbol information, and the data block may be decomposed into M sub-symbols, where each sub-symbol includes K sub-carriers, so that N ═ KM. By d_1,1...d_1,M...d_K,1...d_K,MRepresenting the subcarrier data transmitted on each symbol in the complex-valued data block d. g_1,1...g_1,M...g_K,1...g_K,MRepresenting the impulse shaping filter passed during GFDM modulation. The preset transmission information vector obtained by superimposing all the modulated information modulated by the GFDM may be set to x ═ x (x)₁,x₂,…,x_N). The obtained preset sending information vector is transmitted to a receiving end through a GFDM system channel, and a preset receiving information vector formed by the receiving end receiving the preset sending information vector can be set as y ═ y (y)₁,y₂,…,y_N). At this time, the channel capacity can be represented by the average mutual information I (x; y), and then the GFDM channel is transformed as follows:

because x is (x)₁,x₂,…,x_N) Containing N symbol information, the GFDM system channel capacity can first be split to the symbol level, i.e.

The GFDM system channel is decomposed into N channels and each symbol x because the QAM modulation order is J_nAll correspond to J bits and are set as b_n＝(b_n,1,b_n,2,…,b_n,J) N is 1,2, …, N, so the channel capacity can be further split to the bit level, i.e. bit level

The GFDM system channel is decomposed into JN subchannels, i.e., the first step of GFDM channel transformation is completed.

Second, binary channel conversion: and obtaining at least one polarization code transmission channel of the GFDM system by a preset grid map mapping technology of preset binary channel transformation on at least one channel.

After the JN GFDM channels are obtained, the JN GFDM channels are subjected to parallel binary channel polarization transformation, that is, the GFDM channels are subjected to a preset trellis mapping technique for preset binary channel transformation to obtain JN bit polarization channels, and the second binary channel transformation is completed to form at least one polarization code transmission channel of the GFDM system according to the embodiment of the present invention.

Therefore, the channel of the GFDM system can be divided into at least one polarization code transmission channel suitable for polarization code transmission through two-step channel transformation, so that the GFDM system and the polarization codes are better combined, the error rate of a transmission channel obtained by using the polarization code coding is reduced, and the transmission performance of the GFDM system is improved.

In an embodiment of the information transmission method according to the embodiment of the present invention, a preset signal modulation method modulation process of the GFDM system in the information transmission method may be as shown in fig. 3. Fig. 3 is a schematic diagram of a GFDM modulation process in an information transmission method according to an embodiment of the present invention.

The sending end information source of the GFDM system generates an information vector to be sent containing V bits, and the information vector to be sent containing V is obtained through CRC, channel coding and interleaving_cA codeword vector of bits. The codeword vector is modulated by a preset signal modulation method, which may be QAM and GFDM. The modulation process using QAM and GFDM can be as shown in fig. 3.

For example, when QAM modulation is adopted, a complex-valued data block d containing N symbol information is obtained by QAM modulation on a codeword vector, which is d in fig. 3₁...d_N. The data block can be decomposed into M sub-symbols, each sub-symbol comprising K sub-carriers, with d_k,mWhich represents the data transmitted on the mth sub-symbol and the kth sub-carrier in any complex-valued data block d, K is 1,2, …, K, M is 1,2, …, M. g_1,1...g_1,M...g_K,1...g_K,MRepresenting each d in the modulation process_k,mCorresponding to the passing impulse shaping filter, δ n]...δ[n-(M-1)K]Is represented by any one of d_k,mShift in the symbol time domain corresponding to the symbol data, g n mod n]Representation and any symbol data d_nThe corresponding prototype filter is used to filter out the original filter,

is represented by any one of d_k,mShift, x 1, in frequency domain corresponding to symbol data],...,x[N]Is represented by₁...d_NCorresponding filtered data. g_k,mRepresenting any one of the impulse-shaping filters, the g_k,mAll of which are all the same prototype filter g ═ g [1],g[2],…,g[N])^TObtained by time-frequency domain cyclic shift. g_k,mThe calculation formula is as follows:

wherein K is 1,2, …, K, M is 1,2, …, M, N is 1,2, …, N. Any data d_k,mFiltering with corresponding impulse shaping filter to obtain filtered data, and superposing all the filtered data to obtain GFDM modulated signal x [1 ]],...,x[N]The modulated signal x [1 ]],...,x[N]Any modulation signal x [ n ] in]The calculation formula is as follows:

the modulated signal vector formed by GFDM modulation is represented as x: and x is Ad.

Wherein d ═ d [1 ]],d[2],…,d[N])^TRepresenting a complex-valued data signal, x ═ x [1 ]],x[2],…,x[N])^TRepresenting a GFDM modulated signal vector, a represents an N × N GFDM modulation matrix, consisting of all impulse shaping filter permutations. Namely, it is

A＝(g_1,1,g_2,1…,g_K,1,g_1,2,g_2,2,…,g_K,2,…,g_1,M,g_2,M,…,g_K,M)，

g_1,1＝g＝(g[1],g[2],…,g[N])^T，

g_1,2＝(g[(1-K)modN],g[(2-K)modN],…,g[(N-K)modN])^T

The a matrix can actually be expressed as a dot product of two matrices (multiplication of elements at the same position), i.e., a ═ G ⊙ W, and the G matrix represents the impulse shaping filter G_k,mThe cyclic shift relationship in the time domain, W matrix, represents the filter g_k,mA shift relationship in the frequency domain.

Optionally, in an embodiment of the information transmission method according to the embodiment of the present invention, determining the reliability of each polarization code transmission channel may include:

the capacity of each transmission channel is determined through a Monte Carlo simulation algorithm, and the capacity of a preset binary additive white Gaussian noise channel model is determined.

Specifically, a receiving end of the GFDM system receives a received signal y, and the received signal y passes through a minimum mean square error receiver to obtain a symbol vector containing soft information

Wherein the content of the first and second substances,

a covariance matrix representing the noise. A denotes the N × N GFDM modulation matrix and H denotes the N × N cyclic convolution matrix, where HA can be considered as a whole and channel equalization HAs been performed during signal detection.

In the presence of interference between symbol information, actually

Containing corresponding sender-side symbol information d_nThe remaining symbol pairs d_nInterference and additive noise, symbol vector

The formula is as follows:

wherein C ═ B_MMSEA，

Indicating other symbols to corresponding transmit-end modulation symbols d_nThe interference of (a) with the other,

representing noise. Therefore, the SINR (Signal to interference plus noise power) can be expressed as follows:

wherein E is_sRepresenting the average power, N, of the symbol information at the transmitting end₀To representThe noise power.

With SINR, accurate soft symbols can be obtained to calculate d_nLog-likelihoodoratio ratio (Log-likelihoodoratio), the Log-likelihood ratio LLR formula is as follows:

wherein, b_n,jIndicating symbol information d_nIs represented by a (b) bit LLR_n,j)，b_n,jAnd Λ (b)_n,j) The corresponding random variables are respectively represented as B_n,jAnd L_n,j。

Estimating to obtain a probability density function p (L) by a Monte Carlo simulation algorithm_n,j|b_n,j) And further obtain b_n,jThe specific formula of the channel capacity I (n, j) is as follows:

according to the calculation mode, the symbol vector of the received signal y is calculated

Each bit of each symbol corresponds to the channel capacity of the used polar code transmission channel.

Calculating to obtain the channel capacity of a preset BIAWGN (Binary Input Additive White Gaussian Noise channel) model and the channel capacity I (sigma) of the BIAWGN model²) The calculation formula is as follows:

wherein, epsilon is 1-2b,

exp (·) represents an exponential operation with a natural constant e ═ 2.71828 …, v ═ 1-2b) + z, b ∈ {0,1},

denotes a mean of 0 and a variance of σ²A gaussian distribution of (a).

And step two, when the capacity of the preset binary additive white Gaussian noise channel model is equal to the capacity of each polarization code transmission channel, determining the equivalent noise variance of each polarization code transmission channel.

Specifically, the channel capacity of the preset binary additive white gaussian noise channel model is equal to the capacity of each polar code transmission channel, that is, the following equation is solved:

I(n,j)＝I(σ²)

according to the equation, the equivalent noise variance sigma of each polarization code transmission channel can be obtained²。

And step three, determining the mean value of the log-likelihood ratio of each polarization code transmission channel to the Gaussian distribution through a Gaussian approximation algorithm and the equivalent noise variance of each polarization code transmission channel.

And step four, aiming at each polarization code transmission channel, determining the mean value of the log-likelihood ratio of the polarization code transmission channel to be the reliability of the polarization code transmission channel.

Specifically, a gaussian approximation algorithm is used to calculate a mean value of log likelihood ratios of the respective polarization code transmission channels to a gaussian distribution, and the mean value of the log likelihood ratios of the polarization code transmission channels is used as the reliability of the bit polarization channel, i.e., the larger the mean value of the gaussian distribution of the log likelihood ratios is, the higher the reliability of the polarization code transmission channels is. And finally, selecting a polarization code transmission channel with high reliability for signal transmission.

Therefore, after the reliability of each polarization code transmission channel is determined, the polarization code transmission channel with high reliability can be selected to transmit the polarization code coding information, so that the reliability of the GFDM system for transmitting the polarization code coding information is improved, and the performance of the GFDM system is improved.

In an embodiment of the information transmission method according to the embodiment of the present invention, the capacity of each transmission channel is determined by using a monte carlo simulation algorithm, which may be as shown in fig. 4. Fig. 4 is a channel capacity distribution diagram of at least one polar code transmission channel of an information transmission method according to an embodiment of the present invention. The circles in fig. 4 represent channels formed by the first step of GFDM channel conversion, the dots represent channels formed by the binary channel conversion, and 16-ary QAM modulation is used in fig. 4. As can be seen from fig. 4, the channel capacities of the channels corresponding to the 1 st and 3 rd bits are equal to each other, and the channel capacities of the channels corresponding to the 2 nd and 4 th bits are equal to each other.

Optionally, in an embodiment of the information transmission method according to the embodiment of the present invention, acquiring an information vector to be transmitted, encoding the information vector to be transmitted by using an encoding method, and modulating the encoded information vector to be transmitted by using a preset signal modulation method to obtain a transmission information vector, where the method includes:

and acquiring an information vector to be transmitted, and coding the information vector to be transmitted through Cyclic Redundancy Check (CRC) coding to form the information vector to be transmitted with a check sequence.

After the GFDM system channel is divided into at least one polar code channel, when information is transmitted, an information vector to be transmitted can be obtained at the information source of the GFDM system, and the information vector to be transmitted is encoded by the CRC of the GFDM system to form the information vector to be transmitted with the check sequence in the embodiment of the present invention.

And coding the information vector to be transmitted with the check sequence by a polar code coding mode to form a polar code coding information vector.

After the information vector to be transmitted is CRC-encoded, the information vector to be transmitted with the check sequence is obtained, and the information vector to be transmitted with the check sequence is encoded in a polar code encoding mode to form the polar code encoded information vector in the embodiment of the invention.

And interleaving the polar code coding information vectors through interleaving to obtain the polar code coding information vectors corresponding to QAM modulation.

During the transmission of the transmitted information vector through the channel, the actual channel often has a fading characteristic, and a deep fading valley point with a long duration may affect the occurrence of errors in bits of symbol information in a consecutive series of transmitted information. Interleaving is to disperse a string of bits of a burst error into random independent errors.

Specifically, after the coding is completed to form the polar code coded information vector, the polar code coded information vector is obtained, and the polar code coded information vector is interleaved based on the conclusion that the channel capacities of the polar code transmission channels corresponding to the same position bits in different symbol information are very close, so as to form the polar code coded information vector corresponding to QAM modulation.

And modulating the polarization code coding information vector through QAM and GFDM to obtain a modulation signal.

In the embodiment of the invention, the polar code coding information vector can be modulated through QAM and GFDM to obtain a modulation signal. It should be noted that the preset modulation method of an information transmission method according to the embodiment of the present invention is not limited to QAM and GFDM, and other modulation methods are also preferable.

By adding a cyclic prefix to the modulation signal, a transmission information vector is obtained.

After the polar code coded information vector is modulated to obtain a modulation signal, a cyclic prefix is added in front of the modulation signal to obtain a transmission information vector formed by polar code coding.

Therefore, the method and the device can form the polar code coded information by using the polar code coding method for the information vector to be sent, modulate the coded information by a preset modulation mode, and finally form the polar code coded sending information vector.

Optionally, in an embodiment of the information transmission method according to the embodiment of the present invention, interleaving the polar code encoded information vectors to obtain polar code encoded information vectors corresponding to QAM modulation includes:

and carrying out equal-capacity segmentation on the channel corresponding to each orthogonal information vector in the polarization code coding information vector to obtain the polarization code coding information vector corresponding to QAM modulation.

In the embodiment of the invention, more simplified interleaving is adopted, namely, equal-capacity segmentation is carried out on the channel corresponding to each orthogonal information vector in the polarization code coding information vector to obtain the polarization code coding information vector corresponding to QAM modulation. The method comprises the following specific steps:

in the embodiment of the invention, a GFDM system channel is decomposed into JN polarized code transmission channels according to transmission parameters, and the optimal interleaving method is to directly divide all the JN polarized code transmission channels into two groups, wherein each group has JN/2 polarized code transmission channels. The grouping principle is to ensure that the sum of the respective channel capacities of the two groups of channels is equal, so that the grouping operation is equal capacity division. Then, the two groups of channels are respectively divided by equal capacity, and so on, and the channels are grouped according to the criterion of equal capacity until finally, only two polarization code transmission channels exist in each group, and the algorithm is terminated.

Although the optimal interleaving performance is good, when the value of JN is large, the complexity of interleaving is very high.

In the embodiment of the invention, based on the conclusion that the channel capacities of the polar code transmission channels corresponding to the same position bits in different symbol information are very close, the equal capacity division operation is only performed in the channel corresponding to each quadrature amplitude modulation symbol. The method comprises the steps of firstly decomposing the polar code transmission channels of the JN GFDM systems into 2N groups (because N is the number of quadrature amplitude modulation QAM symbols and the equivalence of the real part and the imaginary part of each QAM symbol is considered), enabling each group to comprise J/2 polar code transmission channels, then simultaneously performing equal-capacity segmentation on the 2N polar code transmission channel groups in parallel, namely completing the dispersion of a string of bits of burst errors in sub-channels, completing the interleaving process, and obtaining the polar code coding information vector corresponding to QAM modulation.

Therefore, in the embodiment of the invention, the channel corresponding to each orthogonal information vector in the polarization code coding information vector is subjected to equal-capacity segmentation by interleaving to obtain the polarization code coding information vector corresponding to QAM modulation, so that the interleaving complexity can be simplified, and the interleaving efficiency can be improved.

In one embodiment of the information transmission method according to the embodiment of the present invention, the transmission process of the GFDM system in which information is sent may be as shown in fig. 5. Fig. 5 is a schematic diagram of a process of transmitting an information vector in a GFDM system by an information transmission method according to an embodiment of the present invention.

In fig. 5, a source at a transmitting end of a GFDM system generates an information vector b to be transmitted, which includes V bits, and performs CRC coding to obtain a signal vector including V bits, which includes original V bits of information to be transmitted and a CRC check sequence of r bits, that is, V ═ V + r. Obtaining a signal containing V through channel coding_cA code word vector of bits, the coding rate being defined as R ═ V/V_c. In the embodiment of the present invention, QAM may be adopted, and the modulation order is J, to obtain a complex-valued data block d including N symbols, and the data block may be decomposed into M sub-symbols, where each sub-symbol includes K subcarriers, so that N equals to KM. By d_k,mDenotes data transmitted on the mth sub-symbol, the kth sub-carrier, K is 1,2, …, K, M is 1,2, …, M, d_k,mPassing impulse shaping filter g_k,mDenotes all g_k,mAnd forming a GFDM modulation matrix A with the size of NxN, and superposing all filtering data to obtain a GFDM modulation signal x which is Ad. Adding a length of N to the modulated signal_CPObtaining the sending information vector after the cyclic prefix

The wireless channel is represented as

Wherein N is_chFor the length of the channel, it is,

after transmission through the channel, the resulting signal at the receiving end is

Wherein the content of the first and second substances,

denotes a channel convolution matrix of size (N + N) formed from the channel impulse response h_CP+N_ch-1)×(N+N_CP) The band diagonal matrix of (a) is,

representing additive white gaussian noise, wherein,

representing the variance of the noise.

Assuming that the receiving end is ideally synchronized, the signal is received

For the signal

And removing the cyclic prefix to obtain a signal y, wherein y is Hx + z, and H is an N multiplied by N cyclic convolution matrix. The MMSE receiver at the receiving end obtains the symbol vector in the signal y

Wherein the content of the first and second substances,

containing corresponding sender-side symbol information d_nThe remaining symbol pairs d_nInterference and additive noise. Decoding the symbol vector of the signal y by a preset constellation demodulation technology, a de-interleaving technology and a preset channel decoding technology of a receiving end, and finally obtaining a binary signal vector of a transmitting end with interference through CRC decoding

Thus, the whole information transmission process is completed.

In an embodiment of the information transmission method according to the embodiment of the present invention, in order to better implement the performance of the GFDM system according to the embodiment of the present invention, the following description is made by using a specific simulation result.

The performance simulation comparison result of the information transmission method according to the embodiment of the present invention includes fig. 6(a), fig. 6(B), and fig. 6 (C).

In the GFDM system, the number of transmission symbols included in a data block of each transmission information vector is set to N-128, and the impulse shaping filter is a raised cosine roll-off filter. The original GFDM system of Turbo coding adopts 3GPP LTE standard Turbo coding and rate adaptation algorithm, decoding adopts logarithm maximum posterior probability algorithm, and the maximum iteration number is 8. The decoding scheme of the GFDM system of the polar code coding of the embodiment of the invention adopts an aCA-SCL (aid CRC Adaptive successive cancellation List) algorithm, and the maximum List length is 32. In both schemes, the coding rate is 0.5 and CRC-24 codes are adopted.

Fig. 6(a) is a graph showing a comparison result of block error rate performance simulation of different modulation orders under traditional AWGN (Additive White Gaussian Noise) channel transmission of the GFDM system according to the embodiment of the present invention, in fig. 6(a), the subcarrier number K is 16, the subcarrier number M is 8, the roll-off factor α of the filter is 0.1, curve 1 Polar QPSK shows a graph of the GFDM system encoded by the Polar code modulated by the quadrature phase shift keying, curve 2 LTE Turbo QPSK shows a graph of the GFDM system encoded by the Turbo coding by the quadrature phase shift keying, curve 3Polar 16QAM shows a graph of the GFDM system encoded by the Polar code modulated by the 16QAM, curve 4 LTE 16QAM shows a graph of the GFDM system encoded by the Turbo coding by the 16QAM modulation, curve 5 LTE 64QAM shows a graph of the GFDM system encoded by the Polar code modulated by the 64QAM, curve 6QAM represents 64QAM of the GFDM system encoded by the 64QAM, and the performance of the GFDM system encoded by the 64QAM system according to the embodiment of the present invention increases with the gain ratio of the GFDM system.

Fig. 6(B) is a diagram illustrating a comparison result of block error rate performance simulation for different modulation orders under single-path rayleigh channel transmission according to an embodiment of the present invention. In fig. 6(B), the other configuration is not changed, and the channel becomes a single-path rayleigh channel. Curve a Polar QPSK represents the GFDM system curve of the Polar code coding using quadrature phase shift keying modulation, curve b LTE Turbo QPSK represents the GFDM system curve of the Turbo code coding using quadrature phase shift keying modulation, curve c Polar 16QAM represents the GFDM system curve of the Polar code coding using 16QAM modulation, curve d LTE Turbo 16QAM represents the GFDM system curve of the Turbo code coding using 16QAM modulation, curve e Polar 64QAM represents the GFDM system curve of the Polar code coding using 64QAM modulation, and curve f LTE Turbo 64QAM represents the GFDM system curve of the Turbo code coding using 64QAM modulation. The simulation result at this time is similar to that in fig. 6(a), the performance of the GFDM system encoded by the polar code according to the embodiment of the present invention is better than that of the GFDM system encoded by the Turbo code, and the performance gain increases with the increase of the modulation order J.

Fig. 6(C) is a graph of comparison results of block error rate performance simulation for different configuration parameters in single-path rayleigh channel transmission according to an embodiment of the present invention, where the number of subcarriers K, the number of sub-symbols M, and the filter roll-off factor α are flexibly configured, the modulation scheme is 16QAM, and the curve g indicates a GFDM system graph of polar code coding in an environment where α equals 0.1K equals 16M equals 8, curve h indicates a GFDM system graph of polar code coding in an environment where α equals 0.9K equals 16M equals 8, curve i indicates a GFDM system graph of polar code coding in an environment where α equals 0.1K equals 32M equals 4, curve j indicates a GFDM system graph of Turbo coding in an environment where α equals 0.1K equals 16M equals 8, curve K indicates a GFDM system graph of Turbo coding in an environment where K equals 0.9K equals 16M equals 8, curve K indicates a Turbo coding system graph in an environment where K indicates 0.25M equals 0.

As can be seen from fig. 6(C), when the roll-off factor is constant, the different subcarrier numbers and the configuration of the number of subsymbols have a significant effect on the system performance, when the subcarrier number K is 16 and the number of subsymbols M is 8, the performance of the GFDM system encoded by the polar code of the embodiment of the present invention is about 1dB better than that of the subcarrier number K is 32 and when the number of subsymbols M is 4, and the performance of the GFDM system encoded by the Turbo code even has 1.6 dB.

Finally, theThe embodiment of the invention also compares the decoding complexity of the GFDM system of the polarization code coding and the GFDM system of the Turbo coding. In the GFDM system of the polarization code coding, an aCA-SCL polarization decoding algorithm is adopted. The decoding complexity includes two parts: complexity of calculation

And path selection complexity

Wherein the content of the first and second substances,

denotes the average list length and V denotes the length of the information bits. When the block error rate BLER is 10^-3When the temperature of the water is higher than the set temperature,

approximately equal to 2 and a maximum list length of 32. In the GFDM system of Turbo code coding, because there are two component codes and there are 4 metric values to update for each grid time node, the decoding complexity is 2.4.2^γVI_tWhere γ represents the memory length of the component code, e.g. Turbo code, 3, I_tFor maximum number of iterations, here I_t8. When N is 128, J is 4, R is 0.5, and V is JN · R is 256, the decoding complexity of the Turbo code obtained by calculation is 1.31 × 10⁵And the decoding complexity of the polar code is 1.02 x 10⁴The decoding complexity of the polar code encoding is significantly less than that of the Turbo code.

Therefore, the complexity of the polar code coding adopted by the embodiment of the invention is lower than that of the Turbo code in decoding.

To achieve the above object, an embodiment of the present invention further discloses an information transmission apparatus, as shown in fig. 7, fig. 7 is a schematic diagram of an information transmission apparatus according to an embodiment of the present invention, including:

a polarization code transmission channel determining module 701, configured to determine at least one polarization code transmission channel of the GFDM system according to a two-step channel polarization transformation method;

a reliability determining module 702, configured to determine reliability of each polarization code transmission channel;

a transmission information determining module 703, configured to obtain an information vector to be transmitted, encode the information vector by using a coding method, and modulate the encoded information vector by using a preset signal modulation method to obtain a transmission information vector, where the coding method at least includes a polar code coding method;

a selecting module 704, configured to select a target polar code transmission channel with the same number of bits as the number of bits used for sending the information vector and high reliability from the at least one polar code transmission channel;

the sending module 705 is configured to transmit a sending information vector to a receiving end through a target polar code transmission channel, so that the receiving end processes the sending information vector through a preset demodulation method and a preset decoding method to obtain the information vector.

The information transmission device provided by the embodiment of the invention divides the traditional GFDM system channel into two steps of channel polarization transformation by utilizing the implementation mode of the polarization code to construct the polarization code transmission channel, selects at least one polarization code transmission channel with the same number of bits as the information vector to be sent and high reliability from the polarization code transmission channel, and transmits information by utilizing the at least one polarization code transmission channel, so that the GFDM system is better adapted to when the information vector is transmitted by utilizing the coding mode of the polarization code, and the information transmission performance of the GFDM system is improved. In addition, polar codes are less complex to decode than Turbo codes.

It should be noted that, the apparatus according to the embodiment of the present invention is an apparatus applied to the above-mentioned information transmission method, and all embodiments of the above-mentioned information transmission method are applicable to the apparatus and can achieve the same or similar beneficial effects.

Optionally, in an embodiment of the information transmission apparatus according to the embodiment of the present invention, the polar code transmission channel determining module 701 is specifically configured to determine, in the GFDM system, at least one polar code transmission channel of the GFDM system through the GFDM channel transformation and the binary channel transformation.

Optionally, in an embodiment of the information transmission apparatus in the embodiment of the present invention, the polarization code transmission channel determining module 701 includes:

the channel division submodule is used for carrying out Quadrature Amplitude Modulation (QAM) modulation on a bit vector of a preset transmission information vector in a GFDM system to obtain a symbol vector of the preset transmission information vector, wherein each symbol of the symbol vector contains the number of bits corresponding to the modulation order of the QAM modulation, and the channel of the GFDM system is divided into at least one channel with the same number of bits as all the symbols in the symbol vector according to the number of bits of all the symbols in the symbol vector;

and the polar code transmission channel determining submodule is used for obtaining at least one polar code transmission channel of the GFDM system by a preset grid map mapping technology of preset binary channel transformation on at least one channel.

Optionally, the reliability determining module 702 includes:

the capacity determination submodule is used for determining the capacity of each transmission channel through a Monte Carlo simulation algorithm and determining the capacity of a preset binary additive white Gaussian noise channel model;

the first calculation submodule is used for determining the equivalent noise variance of each polar code transmission channel when the capacity of a preset binary additive white Gaussian noise channel model is equal to the capacity of each polar code transmission channel;

Optionally, in an embodiment of the information transmission apparatus in the embodiment of the present invention, the sending information determining module 703 includes:

the first coding submodule is used for obtaining an information vector to be sent, coding the information vector to be sent through Cyclic Redundancy Check (CRC) coding, and forming the information vector to be sent with a check sequence;

the second coding submodule is used for coding the information vector to be sent with the check sequence in a polarization code coding mode to form a polarization code coding information vector;

the interleaving submodule is used for interleaving the polar code coding information vectors to obtain the polar code coding information vectors corresponding to QAM modulation;

the modulation submodule is used for modulating the polarization code coding information vector through QAM and GFDM to obtain a modulation signal;

and the adding submodule is used for adding a cyclic prefix to the modulation signal to obtain a sending information vector.

Optionally, in an embodiment of the information transmission apparatus according to the embodiment of the present invention, the interleaving sub-module is specifically configured to perform equal-capacity segmentation on a channel corresponding to each orthogonal information vector in the polarization code encoded information vector, so as to obtain a polarization code encoded information vector corresponding to QAM modulation.

An embodiment of the present invention further provides an electronic device, as shown in fig. 8. Fig. 8 is a schematic diagram of an electronic device according to an embodiment of the present invention, which includes a processor 801, a communication interface 802, a memory 803, and a communication bus 804, where the processor 801, the communication interface 802, and the memory 803 communicate with each other via the communication bus 804,

a memory 803 for storing a computer program;

the processor 801 is configured to implement the following steps when executing the program stored in the memory 803:

determining the reliability of each polarization code transmission channel;

acquiring an information vector to be transmitted, encoding the information vector by an encoding method, and modulating the encoded information vector by a preset signal modulation method to obtain the transmitted information vector, wherein the encoding method at least comprises a polar code encoding method;

selecting a target polarization code transmission channel with the same number of bits as the number of bits for sending the information vector and high reliability from at least one polarization code transmission channel;

and transmitting the sending information vector to a receiving end through a target polarization code transmission channel, so that the receiving end processes the sending information vector through a preset demodulation method and a decoding method to obtain the information vector.

The communication bus 804 mentioned in the above electronic device may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus 804 may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.

The communication interface 802 is used for communication between the above-described electronic apparatus and other apparatuses.

The Memory 803 may include a Random Access Memory (RAM) or a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. Optionally, the memory 803 may also be at least one storage device located remotely from the aforementioned processor.

The Processor 801 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component.

The electronic equipment provided by the embodiment of the invention divides the traditional GFDM system channel into two steps of channel polarization transformation by utilizing the implementation mode of the polarization code to construct the polarization code transmission channel, selects at least one polarization code transmission channel with the same number of bits as the information vector to be sent and high reliability from the polarization code transmission channel, and transmits information by utilizing the at least one polarization code transmission channel, so that the electronic equipment can better adapt to the GFDM system when the information vector is transmitted by utilizing the coding mode of the polarization code, and the information transmission performance of the GFDM system is improved. In addition, polar codes are less complex to decode than Turbo codes.

The embodiment of the invention also discloses a computer readable storage medium, a computer program is stored in the computer readable storage medium, and when the computer program is executed by the processor 801, the following steps are realized:

determining the reliability of each polarization code transmission channel;

The computer-readable storage medium provided by the embodiment of the invention utilizes a polarization code implementation mode, divides the channels of the traditional GFDM system into two steps of channel polarization transformation to construct polarization code transmission channels, selects at least one polarization code transmission channel with the same number of bits as the information vector to be sent and high reliability from the polarization code transmission channels, and utilizes the at least one polarization code transmission channel to transmit information, so that the GFDM system can be better adapted to when the information vector is transmitted by utilizing a polarization code coding mode, and the information transmission performance of the GFDM system is improved. In addition, polar codes are less complex to decode than Turbo codes.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. An information transmission method, comprising:

determining the reliability of each polarization code transmission channel;

transmitting the sending information vector to a receiving end through the target polarization code transmission channel, so that the receiving end processes the sending information vector through a preset demodulation method and a decoding method to obtain the information vector;

the determining at least one polarization code transmission channel of the generalized frequency division multiplexing GFDM system according to the two-step channel polarization transformation method comprises the following steps:

obtaining at least one polarization code transmission channel of the GFDM system by a preset grid map mapping technology of preset binary channel transformation on the at least one channel;

the determining the reliability of each polarization code transmission channel includes:

determining the capacity of each transmission channel through a Monte Carlo simulation algorithm, and determining the channel capacity of a preset binary additive white Gaussian noise channel model;

2. The method according to claim 1, wherein the obtaining an information vector to be transmitted, encoding the information vector to be transmitted by an encoding method, and modulating the encoded information vector to be transmitted by a preset signal modulation method to obtain a transmitted information vector comprises:

3. The method of claim 2, wherein said interleaving the polar-code-encoded information vectors to obtain polar-code-encoded information vectors corresponding to the QAM modulation comprises:

4. An information transmission apparatus, comprising:

the transmitting module is used for transmitting the transmitting information vector to a receiving end through the target polarization code transmission channel so that the receiving end processes the transmitting information vector through a preset demodulation method and a decoding method to obtain the information vector;

the polar code transmission channel determining module includes:

the polar code transmission channel determining submodule is used for obtaining at least one polar code transmission channel of the GFDM system by a preset grid map mapping technology of preset binary channel transformation on at least one channel;

a reliability determination module comprising:

5. An electronic device, comprising a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory complete communication with each other through the communication bus;

the memory is used for storing a computer program;

the processor, when executing the program stored in the memory, implementing the method steps of any of claims 1-3.

6. A computer-readable storage medium, characterized in that a computer program is stored in the computer-readable storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of the claims 1-3.