Data storage method and device for Turbo decoding

Abstract

The invention relates to a data storage method and device for Turbo decoding. The method comprises the steps of: obtaining at least a piece of extrinsic information to be processed; caching the at least a piece of extrinsic information to be processed in a first-input first-output manner, so that the number of extrinsic information to be processed, which is output for one time after being cached,is equal to a pre-set threshold value; performing Turbo decoding on the extrinsic information to be processed, which is output after being cached, so that iterative update extrinsic information is obtained, wherein the number of extrinsic information, which is input by Turbo decoding for one time, is equal to the pre-set threshold value; and storing the iterative update extrinsic information according to the initial storage position of at least a piece of extrinsic information to be processed. By means of the technical scheme provided by the invention, on the basis that too much data buffers are not needed, the technical requirement that multiple pieces of interleaved and de-interleaved extrinsic information are accessed for one time can be realized; miniaturization design of a chip is facilitated; and the data processing capacity and the data processing speed of a Turbo decoder can be further improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a data storage method and device for Turbo decoding. Background technique [0002] When the existing turbo decoder decodes external information, it needs to involve decoding logic according to the specifications of Wideband Code Division Multiple Access (WCDMA). When the data in the turbo decoder When the transmission speed is slow, the soft input soft output (soft input soft output, SISO for short) decoder in the Turbo decoder only needs to process one piece of information at a time, and only needs to save one piece of data when the information is interleaved. Buffer (buffer), for example, Static Random Access Memory (Static Random Access Memory, referred to as SRAM), the Turbo decoder only needs to store one external information in a clock cycle (clock cycle, hereinafter referred to as cycle), at this time No data read conflicts will occur in the case of interleaving or deinterleavin...

AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is that the existing Turbo decoder can only avoid the data conflict problem that may occur when accessing multiple external information at the same time by increasing the number of data buffers, which is not conducive to the miniaturization design of the chip and limits The data processing ability of the Turbo decoder and the further improvement of the data processing speed

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