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Decoding and checking device and method, decoding device and method, and receiving end

A verification device and decoding technology, which is applied in the field of communication, can solve the problems of high hardware power consumption, etc., and achieve the effects of improving throughput, saving power consumption, and avoiding invalid iterative calculations

Active Publication Date: 2017-03-15
SPREADTRUM COMM (TIANJIN) INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the technical solution of the present invention is that the existing CRC check is performed after component decoding, resulting in high hardware power consumption

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  • Decoding and checking device and method, decoding device and method, and receiving end
  • Decoding and checking device and method, decoding device and method, and receiving end
  • Decoding and checking device and method, decoding device and method, and receiving end

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Embodiment Construction

[0054] The inventor analyzed that the existing Turbo decoder can only perform CRC check based on the original bit sequence of the code block after the decoding bits of the entire code block are generated, so the CRC check cannot be calculated online in real time, which will lead to Turbo The waste of power consumption of the decoder is mainly reflected in:

[0055] For arbitrary component decoding, the decoding result is output to the sorting memory, and then read out according to the original order of the code blocks for CRC checking. If the verification fails, a read access to the sorting memory is wasted;

[0056] In order to improve the throughput rate of the decoder, the CRC check of one component decoding and the other component decoding need to be calculated in parallel. If the CRC check is successful, the calculation of the other component decoding is redundant, and the CRC check result The later it is generated, the more power consumption of the turbo decoder is waste...

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Abstract

A decoding and checking device and method, a decoding device and method, and a receiving end. The decoding and verifying device includes: an arithmetic unit, configured to perform a verification operation on the data output by the decoder in each clock cycle to obtain an operation result, and the execution of the verification operation is based on the following manner: The bit data is expressed as a polynomial and summed, and then a polynomial remainder is performed on the polynomial obtained by the summation; an output unit is used to output a check result, where the check result is the sum of the operation results of all clock cycles in the decoding stage. The technical scheme of the present invention realizes the real-time calculation of decoding and checking, thereby saving power consumption.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a decoding and checking device and method, a decoding device and method, and a receiving end. Background technique [0002] Due to the iterative decoding method, Turbo code has a decoding performance close to Shannon's theoretical limit. It has been adopted as one of the channel coding schemes of the next generation mobile communication system and has been widely used in the communication field. [0003] Taking the Long Term Evolution (LTE, Long Term Evolution) standard physical layer using a Turbo coder with a code rate of 1 / 3 as the channel coding standard as an example, two component coders are used at the sending end, and the input of the code is to add cyclic redundancy The code block S after checking (CRC, Cyclic Redundancy Check) information, in which the input of the component encoder 1 is the code block S in the normal order, and the output is the check bi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH03M13/091H03M13/2739H03M13/2957H03M13/3972H03M13/6525H03M13/09
Inventor 张桢睿章军
Owner SPREADTRUM COMM (TIANJIN) INC