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Efficient encoding modulation and decoding method based on lattice-type code of B-type construction

A high-efficiency encoding and trellis code technology, applied in the field of trellis code encoding and decoding, can solve problems such as inability to efficiently improve transmission coding efficiency, complex trellis structure, etc., to reduce time complexity, efficient decoding, and speed up translation The effect of code speed

Active Publication Date: 2018-01-19
湖南万般上品信息技术有限公司
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Problems solved by technology

[0003] The purpose of the present invention is: the purpose of the present invention is to provide a kind of high-efficiency coding modulation and decoding method based on Class B structured trellis codes, which solves the problem that existing Class B construction methods cannot efficiently implement improved transmission coding due to the complexity of the lattice structure. efficiency problem

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  • Efficient encoding modulation and decoding method based on lattice-type code of B-type construction
  • Efficient encoding modulation and decoding method based on lattice-type code of B-type construction

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Embodiment 1

[0036] A high-efficiency coding modulation and decoding method based on class B constructed trellis codes, comprising the steps of:

[0037] Step 1: At the coding and modulation end, build a message space based on the B-type trellis code, and in the message space, the given n+k-1-dimensional q-element original message m=(m 1 ,m 2 ,...,m n+k-1 ) division, respectively multiplied by the (n, k) error-correcting code C to obtain the k×n-dimensional generator matrix G and the (n-1)×n-dimensional generator matrix M obtained according to the definition of the B-type construction lattice, and then multiplied by A Senstein prime β gets the corresponding vector, and maps the vector to the message space to get the corresponding q n+k-1 coset representatives, and q n+k-1 The coset representative is transmitted to the decoding end as an n-dimensional complex signal x to obtain an n-dimensional complex signal y to be processed;

[0038] Step 1 includes the following steps:

[0039] Ste...

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Abstract

The invention discloses an efficient encoding modulation and decoding method based on a lattice-type code of a B-type construction, and relates to the technical field of coding and decoding of lattice-type codes. The method includes the following steps of (1) at a coding modulation terminal, constructing a message space based on the lattice-type code of the B-type construction, after the message space divides a set n+k-1-dimension-q-ary original message, conducting coding modulation to obtain a n-dimension complex signal x, transmitting the n-dimension complex signal x to a decoding terminal to obtain a n-dimension complex signal y to be processed; (2) at the decoding terminal, conducting quantization on the n-dimension complex signal y bite by bite to achieve block partition and then conducting classification decoding on the partitioned blocks to obtain a k-dimension-q-ary vector and a n-1-dimension-q-ary vector; (3) splicing the k-dimension-q-ary vector with the n-1-dimension-q-ary vector to obtain a n+k-1-dimension-q-ary message, and finishing the decoding process. The method solves the problems that the existing lattice-type codes of the B-type construction cannot achieve efficient implementation or improve the coding efficiency, and achieves the effects of efficiently achieving message transmission of the message space based on the lattice-type code of the B-type construction.

Description

technical field [0001] The invention relates to the technical field of coding and decoding of trellis codes, in particular to a high-efficiency coding modulation and decoding method based on class B structured trellis codes. Background technique [0002] Trellis code is a kind of coding structure that can infinitely approach the theoretical capacity of Gaussian channel log2(1+SNR), and has a good algebraic structure; trellis code can be applied in physical layer network coding, especially two-way relay system and multi-user Relay transmission system, etc., the transmitted message can be modulated and mapped to an element in the lattice space, and the user transmits the modulated n-dimensional complex signal to the relay node at the same time, and the relay node passes the received information from multiple users The mixed signal formed by the natural linear superposition of the transmission signal directly calculates a set of new messages formed by the linear combination of ...

Claims

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Application Information

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IPC IPC(8): H04L1/00
Inventor 孙奇福谢林衡阳小龙
Owner 湖南万般上品信息技术有限公司
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