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A tpc high-speed decoding method

A decoding and high-speed technology, applied in the field of digital communication, can solve the problems that TPC codes have not been widely used, and achieve the effect of improving TPC decoding rate and minimizing computing and storage resources

Active Publication Date: 2020-12-22
CHENGDU FOURIER ELECTRONICS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The TPC code was proposed by Elias in 1954. At first, due to limited hardware resources, the TPC code was not widely used.

Method used

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Embodiment Construction

[0032] See attached figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Figure 6 The present invention is further described as shown.

[0033] The present invention relates to a kind of TPC high-speed decoding method, by adding fixed judgment, avoid processing unnecessary bits, it is characterized in that, the steps are as follows:

[0034] Step 1): define R0 as a code word array,

[0035] Initialize R=R0, W=0,

[0036] iterate by row / column

[0037] R=R+W / 2

[0038] For the kth row / column

[0039] Perform sign judgment on R(k) to obtain C(k);

[0040] Step 2): update W(k) to the BPSK form of C(k),

[0041] Find p least reliable bits, and generate 2^p test patterns, corresponding to 2^p test branches,

[0042] For test branch i, follow these steps to implement:

[0043] Step ① Calculate the corresponding test sequence, with the formula S(i) and the check value P(i), if S(i) is not 0, then get the position of the error bit by looking up the table and corre...

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Abstract

The invention relates to a TPC high-speed decoding method. The number of operations and intermediate variables can be minimized by only processing the active bits are processed between twice iteration, thereby minimizing the computation and storage resources, and greatly improving the TPC decoding rate.

Description

technical field [0001] The invention relates to the technical field of digital communication, in particular to a TPC high-speed decoding method. Background technique [0002] The TPC code was proposed by Elias in 1954. At first, due to limited hardware resources, the TPC code was not widely used. Until Pyndiah improved the SISO decoding algorithm of TPC code based on the Chase algorithm, the research and application of TPC code had relatively great progress. Although SISO is not an optimal decoding algorithm, it can still achieve near-optimal performance at low bit error rates. Currently, TPC codes are widely used in various communication standards, such as IEEE 802.16. [0003] The minimum Hamming distance of the TPC code is equal to the product of the minimum Hamming distances of the component codes, regardless of the block size. Assuming that the complexity of the component codes is constant, the greater the number of component codes, the better the performance. There...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/29H04L1/00
CPCH03M13/2915H04L1/005
Inventor 史伟仁
Owner CHENGDU FOURIER ELECTRONICS TECH