A Code-Aided Soft Frame Synchronization Algorithm for Quasi-Cyclic LDPC Coded System

被引：0
|
作者：
Chen, Zhixiong [1 ]
Yuan, Jinsha [1 ]
机构：
[1] N China Elect Power Univ, Sch Elect & Elect Engn, Baoding 071003, Hebei, Peoples R China
来源：
2009 5TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-8 | 2009年
关键词：
Quasi-Cyclic LDPC codes; code-aided; frame synchronization; soft information;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A LDPC code-aided frame synchronization algorithm based on Maximum-Likelihood rule is proposed. Firstly the probability presenting the satisfaction of all check restrictions in the Quasi-Cyclic LDPC parity-check matrix for soft information vectors with different frame offsets are computed respectively, and then the point corresponding to the maximum value is chosen as the final frame synchronization point. Because of the cyclic nature of Quasi-Cyclic LDPC codes, a PN sequence is used to overcome the inherent ramp of the probability computed in synchronization search process. Compared to other code-aided frame synchronization algorithms, simulation results show favorable synchronization performance of the new code-aided frame synchronization algorithm based on soft information.
引用
收藏
页码：755 / 758
页数：4
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