电讯技术2017，Vol.57Issue(4)：402-406,5.DOI:10.3969/j.issn.1001-893x.2017.04.006
一种基于分类搜索的Gold误码修正算法
An Error Correction Algorithm for Gold Codes Based on Classification Search
张希会1
作者信息
- 1. 中国西南电子技术研究所,成都 610036
- 折叠
摘要
Abstract
In the countermeasuring of blind processing spread spectrum system with a very low signal-to-noise ratio(SNR),the estimated spreading codes always contain error codes,which can affect the quality of despreading and demodulating the spreading codes.A strict classification scheme is presented according to cross-correlation function and the basic characteristics of the preferred pair of m sequence.And an error correction algorithm based on classification search is proposed,which can quickly search and locate the corresponding code by comparing the three-valued distribution of the cross-correlation function between the test code and the sample Gold codes of each category.Simulations illustrate that the proposed algorithm can completely correct the error codes when the bit error rate(BER) is lower than 11% and also effectively reduce the SNR threshold for the blind processing of spread spectrum signals.关键词
扩频信号/盲处理/低信噪比/Gold误码修正/三值分布性/分类搜索Key words
spread spectrum signal/blind processing/low signal-to-noise ratio/error Gold codes correction/three-valued distribution/classification search分类
信息技术与安全科学引用本文复制引用
张希会..一种基于分类搜索的Gold误码修正算法[J].电讯技术,2017,57(4):402-406,5.
