Method and device for decoding convolution code

A decoding device and convolutional code technology, applied in the field of convolutional code decoding methods and convolutional code decoding devices, can solve the problems of increased calculation and decoding delay, so as to improve speed and performance and reduce decoding Delay and reduce the effect of computational complexity

Active Publication Date: 2011-03-30
SANECHIPS TECH CO LTD
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Problems solved by technology

This method increases the amount of calculation and decoding delay

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  • Method and device for decoding convolution code
  • Method and device for decoding convolution code
  • Method and device for decoding convolution code

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0056] refer to figure 1 , shows a schematic structural diagram of a first embodiment of a convolutional code decoding device according to the present invention. The convolutional code decoding device 100 includes a branch metric calculation unit 110, an accumulated metric storage unit 120, an addition and selection calculation unit 130, an overflow processing unit 140, a survivor path storage unit 150, a maximum path selection unit 160, and a backtracking control ...

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Abstract

The invention discloses a method and device for decoding a convolution code. The device comprises a branch measure calculating unit, an accumulated measure storage unit, an add-compare-select calculating unit, an overflow processing unit, a survival path storage unit and a backtracking control unit, wherein the branch measure calculating unit is used for calculating a branch measure value; the accumulated measure storage unit is used for storing an accumulated survival path measure value; the add-compare-select calculating unit is used for carrying out adding-comparison-selection operation; the overflow processing unit is used for generating a subtraction enabling signal according to the state change of the highest order of the accumulated measure value in the accumulating process and controlling the add-compare-select calculating unit to carry out subtraction operation on the accumulated survival path measure value; the survival path storage unit is used for storing a survival path; and the backtracking control unit is used for backtracking the survival path and outputting a decoding result. The method and the device can solve the overflow problem of the survival path measure value in the accumulating process.

Description

technical field [0001] The invention mainly relates to the technical field of mobile communication, in particular to a convolutional code decoding method and a convolutional code decoding device with an overflow prevention design. Background technique [0002] In a wireless communication system, in order to improve communication performance, channel coding technology needs to be adopted. In this way, the transmission signal can better resist the influence of various channel noise, interference and fading, and reduces the bit error rate of the communication system with a certain degree of redundancy. Convolutional codes have high performance, moderate implementation complexity, and good real-time performance, so they are widely used in digital video broadcasting (DVB), digital audio broadcasting (DAB), satellite communications, wireless local area network (WLAN), ultra-wideband (UWB), 3G , LTE and other technical fields. The encoding implementation of convolutional codes is...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/23
Inventor 刘念陈晓华孙耀辉
Owner SANECHIPS TECH CO LTD
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