A kind of decoder and decoding method

Abstract

The embodiment of the invention provides a decoder and a decoding method, relates to the field of information processing, and provides a decoding mechanism capable of improving the throughput rate of the decoder, fully utilizing the processing space of the decoder and saving the bus control resources. The method comprises the following specific steps: after acquiring at least one decoding block, preprocessing each decoding code according to the characteristic parameter of each decoding block of the at least one decoding block, acquiring the decoding sequence of each decoding block, respectively inputting each decoding block into a decoding core, which is corresponding to the decoding sequence, in at least two decoding core according to the decoding sequence, respectively decoding the received decoding block by virtue of the decoding cores according to the decoding sequence, and outputting decoded data according to the decoding sequence. The embodiment of the invention is used for decoding Turbo codes.

Description

technical field [0001] The invention relates to the field of information processing, in particular to a decoder and a decoding method. Background technique [0002] Turbo code is a long code with pseudo-random characteristics constructed by concatenating two simple component codes in parallel through a pseudo-random interleaver, and decoded by two SISO (Soft Input Soft Output, soft input / soft output) Multiple iterations are performed between the devices to realize the coding method of pseudo-random decoding. At present, Turbo code is the main coding scheme of 3G / 4G data channel. With the rapid increase of wireless communication data volume, the processing capacity requirement of Turbo decoder is also doubled. When Turbo decoding, the code block is divided into n sub-blocks, and perform SISO processing on each sub-block at the same time, that is, use the Turbo decoding algorithm with a parallelism of n to further improve the processing capability. [0003] With the continuo...

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Problems solved by technology

[0005] However, when adopting the above-mentioned instantiation of N turbo decoders with a low degree of parallelism, the memory of the Turbo decoder will increase. Since multiple Turbo decoders are required to be connected to the bus at the same time, the number of bus interfaces will be increased, causing The expansion of bus resources will not only cause inconvenience in control but also increase the workload of scheduling. At the same time, a large amount of parallel input and output of data on the bus will also cause bus data to be blocked, and the throughput rate is low.

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