Low-density parity-check code decoding control system and method, wireless communication system

Abstract

The invention belongs to the technical field of wireless communication, and discloses a decoding control system and method of a low-density parity check code, and a wireless communication system; including: a parameter setting module, an input buffer module, an input control module, an external information storage module, and a data storage module. A transfer control module, a circular left shift module, a circular right shift module, a decoding master control module, a verification information calculation module, a verification information storage module, an output buffer module, and an output control module. The LDPC decoder of the present invention is compatible with all 51 kinds of Z, 2 kinds of base matrices, and a total of 101 kinds of LDPC codes; the base matrix BG1 is a matrix of 46*68, and the base matrix BG2 is a matrix of 42*52; it supports multiple code rates . For different code lengths, the decoder can be flexibly split into corresponding independent decoders, which greatly improves throughput without increasing resources; it has high compatibility and scalability, and has resource High multiplexing rate, low control complexity and high throughput.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a low-density parity-check code (LDPC) decoding control system and method, and a wireless communication system. Background technique [0002] At present, the existing technology commonly used in the industry is as follows: during the transmission of digital signals, the additive noise and interference in the channel will destroy the transmitted effective information symbols. In order to improve the reliability of information transmission and reduce the Error probability during transmission, channel coding techniques are widely used in communication systems. As a kind of error control coding, LDPC code is a good code close to the Shannon limit. LDPC code is a linear block code, and the decoding complexity increases linearly with the increase of the code length. It can be decoded in parallel and is suitable for hardware implementation. LDPC codes have b...

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Problems solved by technology

[0003] To sum up, the existing problems in the prior art are: the existing check matrix block method exists when Z is small, the resource utilization rate is not high, and the throughput is also small

[0004] The difficulty and significance of solving the above technical problems: In order to increase the throughput by increasing resource reuse when Z is small, it is necessary to split the decoder suitable for large Z into several independent ones while keeping resources constant. For the decoder of small Z, this brings great difficulty and complexity to the control and module design of the decoder

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