A data storage method and device for turbo decoding

Abstract

A data storage method and device for Turbo decoding, the method comprising the following steps: acquiring at least one external information to be processed; caching the at least one external information to be processed in a first-in-first-out manner, so that after caching The quantity of the external information to be processed in a single output is equal to the preset threshold value; Turbo decoding is performed on the external information to be processed outputted after the cache to obtain iteratively updated external information, and the quantity of external information input by a single Turbo decoding is equal to The preset threshold; storing the iteratively updated extrinsic information according to the initial storage location of the at least one to-be-processed extrinsic information. Through the technical solution provided by the present invention, the technical requirement of accessing multiple pieces of interleaved and deinterleaved external information at one time can be realized on the basis of not requiring an excessive number of data buffers, which is beneficial to the miniaturization design of the chip and can Further improve the data processing capability and data processing speed of the Turbo decoder.

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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