摘要
介绍基于最大似然准则的定时同步算法,通过仿真发现该算法应用于AWGN信道效果很好,但是应用于平坦衰落信道效果相对较差。为了解决信号在平坦衰落信道传输过程中遇到的一系列问题,对基于循环平稳特性的定时同步算法进行了研究和改进。仿真结果表明该算法可以很好地适应于衰落信道。
The timing synchronization algorithm based on maximum-likelihood（ML） method is introduced.Simulation shows that it can achieve good results when it is applied to AWGN channels,but can not get correct results in flat-fading channels.In order to resolve the problems existing in the signal transmission in flat fading channels,the research and improvement on timing synchronization algorithm are presented based on cyclostationary character.The results of simulation show that this algorithm can be applied to flat-fading channels.
出处
《现代电子技术》
2010年第7期33-34,38,共3页
Modern Electronics Technique
关键词
定时同步
最大似然
循环平稳
平坦衰落
timing synchronization
maximum-likelihood
cyclostationary
flat-fading
