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LDPC encoding method and device for communication signal

A communication signal and coding method technology, applied in the application of error detection coding of multiple parity bits, error correction/detection using block codes, digital transmission systems, etc., can solve the problem of small scaling factors and high computational complexity, etc. problem, to achieve the effect of reducing complexity, improving communication quality, and avoiding square calculation

Active Publication Date: 2019-06-28
HUAWEI TECH CO LTD
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  • Description
  • Claims
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Problems solved by technology

The current LDPC encoding scheme has a large computational complexity and fewer supportable scaling factors

Method used

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  • LDPC encoding method and device for communication signal
  • LDPC encoding method and device for communication signal
  • LDPC encoding method and device for communication signal

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Embodiment Construction

[0023] The technical solution in this application will be described below in conjunction with the drawings.

[0024] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (Wideband) Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex, TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, the future 5th Generation (5G) system or new Wireless (New Radio, NR) etc. In a communication system, encoding the communication signal can improve the communication quality.

[0025] figure 1 It shows a schematic diagram of a scene of an LDPC encoding and d...

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Abstract

The invention provides an LDPC encoding method and device for a communication signal, which can reduce the coding complexity. The encoding method comprises the following steps: acquiring a (N-M) * 1 information bit vector I (x) according to information bits of a communication signal to be sent; obtaining a check set vector D (x) according to the I (x) and the M * (N-M) system partial matrix N (x),the D (x) satisfying the following conditions: D (x) = {N (x) I (x)} mod2; determining an M * M check part matrix M (x), the M (x) being a bidiagonal matrix, a polynomial matrix Q (x) corresponding to a first column vector of the M (x) being expressed as Q (x) = I + xah + xbh, and Q-1 (x)=x-2 *[beta]* hQ (x), a and b are constants different from each other, and h = 2j-1, wherein [beta] is a positive integer, and j is a positive integer; determining a check bit vector C (x) corresponding to the I (x) according to the D (x) and the M (x), the C (x) satisfying the following conditions: D (x) = {M (x) C (x)} mod2; and according to the I (x) and the C (x), generating a coding code word corresponding to the to-be-sent communication signal.

Description

Technical field [0001] This application relates to the field of coding and decoding, and in particular to LDPC coding methods and devices for communication signals. Background technique [0002] Codec is widely used in various communication technologies such as electronic computers, televisions, and remote control. As the requirements for communication rates are getting higher and higher, more stringent requirements are put forward on the encoding and decoding methods. Related technologies use low density parity check (LDPC) coding schemes. LDPC is a forward error correction coding scheme that can realize parallel decoding flexibly, and it can be applied to a variety of modern communication systems and fields. For example, deep space communications, optical fiber communications, satellite digital video and audio broadcasting and other fields. [0003] LDPC is a type of linear code defined by a check matrix. In order to simplify the LDPC encoding process, modern communication sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H03M13/11
CPCH03M13/11H04L1/00
Inventor 梁继业刘华斌孙宇佳
Owner HUAWEI TECH CO LTD
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