A kind of turbo decoder and decoding method

A decoder and decoding technology, applied in the field of turbo decoder and decoding, can solve the problems of long decoding delay and low throughput of turbo decoder, and achieve improved throughput and decoding delay, Reduce the effect of decoding delay

Active Publication Date: 2021-07-20
VERISILICON MICROELECTRONICS (CHENGDU) CO LTD +2
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Problems solved by technology

[0006] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of Turbo decoder and decoding method, be used to solve the throughput of Turbo decoder in the prior art is little, the problem such as decoding delay time is long

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  • A kind of turbo decoder and decoding method
  • A kind of turbo decoder and decoding method
  • A kind of turbo decoder and decoding method

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Embodiment Construction

[0066] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0067] see Figure 2 ~ Figure 3 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbi...

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Abstract

The present invention provides a turbo decoder and a decoding method, including: receiving address information and soft information through an input buffer circuit, a first multiplexing circuit, and a soft input buffer circuit, and dividing the soft information into multiple parallel signals ; Through each soft-input and soft-output decoding circuit, the multi-channel signal is decoded in parallel; the external signal obtained by decoding is delayed and read by the data buffer circuit and the external information buffer circuit, so as to avoid the parallel decoding process. The conflict of reading and writing to the memory is then decoded in parallel by each soft-input and soft-output decoding circuit again, so that the decoding is realized through multiple iterations. The present invention uses the parallel bidirectional iterative Max-Log-Map algorithm to effectively improve the throughput and decoding delay of Turbo decoding; simultaneously realizes the parallel decoding of WCMDA, greatly reduces the decoding delay of WCDMA, and makes Hardware resources are fully reused.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a Turbo decoder and a decoding method. Background technique [0002] Turbo code is also called Parallel Concatenated Convolutional Code (Parallel Concatenated Convolutional Code, PCCC). Code, and use soft output iterative decoding to approximate maximum likelihood decoding, so as to obtain decoding performance almost close to Shannon's theoretical limit. Turbo codes are widely used in the field of wireless communication, including communication satellites, digital image transmission, third-generation mobile phones, etc. [0003] figure 1 Shown is the commonly used convolutional turbo encoder used in LTE (Long Term Evolution, long-term evolution technology) and WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) field, and its specific structure is as follows: the first sub-encoder 11 and the second sub-encoder 12 have the same structure...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/27H03M13/00
CPCH03M13/2771H03M13/6525
Inventor 蒋祥顺曾毅
Owner VERISILICON MICROELECTRONICS (CHENGDU) CO LTD
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