舰船电子工程2017，Vol.37Issue(4)：28-31,4.DOI:10.3969/j.issn.1672-9730.2017.04.008
码辅助迭代载波同步算法的实现
Code-aided Iteration Carrier Synchronization Algorithm
杨光辉 1张曙霞 1蒋宇中1
作者信息
- 1. 海军工程大学电子工程学院 武汉 430033
- 折叠
摘要
Abstract
At low signal-to-noise ratio, the carrier frequency offset and phase offset will have a significant impact on the LDPC code system, requiring the receiver to estimate the frequency offset and phase offset before decoding.In order to solve the above problems, a code-aided iterative carrier estimation is proposed based on statistics of soft information from LDPC iterative decoder.The basic idea is to use the soft information output by the decoder to assist the estimation of the synchronization parameters, which is to use the soft information for the coarse synchronization of the carrier based on the cost function and the carrier synchronization based on the maximum likelihood iteration respectively.The better carrier synchronization is achieved by conducting the joint iteration of synchronizer, demodulator and decoder.关键词
LDPC码/码辅助/译码软信息/迭代载波同步Key words
LDPC Codes/code-aided/soft decoding information/iterative carrier synchronization 分类
信息技术与安全科学引用本文复制引用
杨光辉,张曙霞,蒋宇中..码辅助迭代载波同步算法的实现[J].舰船电子工程,2017,37(4):28-31,4.
