Turbo code encoder, decoder, encoding method and decoding method

Abstract

The invention discloses a Turbo code encoder and an encoding method. The Turbo code encoder comprises an interleaver and a component encoder. After the component encoder encodes the input information sequences, bits fed back by the component encoder are encoded and are distributed to the last place of information bit and the last place of check bit and the bits are output. Since the encoder adopts only one component encoder and the number of tail bits is reduced, the encoding processing delay is effectively reduced, the encoding complexity is simplified and the encoding speed and the rate matching speed are improved. The invention additionally discloses a decoder and a decoding method. By adopting the technical scheme, the invention has the advantages that the encoding and decoding complexity and the processing delay are reduced, and encoding speed and decoding speed are improved.

Description

technical field

[0001] The present invention relates to the field of digital communication, in particular, the present invention relates to a Turbo code encoder, a decoder and an encoding and decoding method. Background technique

[0002] During the transmission process of digital signals, errors will occur due to the influence of noise and interference. In the communication system, error correction coding technology is generally used to ensure reliable transmission. Turbo code is a coding scheme proposed by C.Berrou et al. in 1993. Because it has better performance than other codes in the application environment of low signal-to-noise ratio, Turbo code is used as a wireless channel in various mobile communication systems. One of the coding standards. Generally, a Turbo encoder consists of two systematic recursive convolutional (RSC) encoders, an interleaver and a deleter.

[0003] With the continuous development of mobile communication, Turbo coding and decoding technolog...

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