Rapidly configurable Turbo coder and coding method

Abstract

The invention discloses a rapidly configurable Turbo coder and relates to the field of wireless communication. The coder comprises an interleaving generation unit, a data processing unit, a data storage unit, a puncturing generation unit and a coding unit. The coder and the coding method mainly have three design key points that 1, the coding is rapid, an interleaving process is finished in data recombination, and the puncturing processing is finished in the coding unit; 2, the Turbo coder and coding method are flexible and configurable, and an intra-line conversion sequence, an inter-line conversion sequence, a puncturing sequence and a component coder can be externally configured by the coder; and 3, the resource cost is low, parallel-to-serial conversion does not need to be carried out on an interleaving sequence, two-way coding is controlled through a set of finite state machine, and punctured check sequences do not need to be stored in coding results. Through adoption of the Turbo coder provided by the invention, long term evolution and development of a system are facilitated.

Description

technical field [0001] The invention relates to a wireless communication system, in particular to a fast and configurable Turbo encoder supporting systems such as WCDMA, LTE and satellite mobile communication. Background technique [0002] As the code length increases, Turbo codes can approach the Shannon limit infinitely under additive white Gaussian noise (AWGN) channel conditions. Because of good bit error performance, Turbo codes are widely used in wireless communication systems. [0003] A conventional Turbo encoder consists of an interleaver and two RSC component encoders. The interleaver generates an interleaving table of code length, or configures an interleave table of code length externally, performs parallel-to-serial conversion on coded bits, and then interleaves The encoded bits and the interleaved bits pass through two component encoders respectively. The RSC component encoder outputs all check sequences, and then undergoes puncturing processing to obtain the ...

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Problems solved by technology

[0003] A conventional Turbo encoder consists of an interleaver and two RSC component encoders. The interleaver generates an interleaving table of code length, or configures an interleave table of code length externally, performs parallel-to-serial conversion on coded bits, and then interleaves The encoded bits and the interleaved bits pass through two component encoders respectively. The RSC component encoder outputs all check sequences, and then undergoes puncturing processing to obtain the encoding result. This process requires multiple accesses to data, which consumes both storage resources and processing. time

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