摘要
在802.16e系统中,接收端对同步精度有很高的要求,同步误差会导致系统性能的急剧下降。文章介绍了OFDMA的基本概念和体系结构,分析了同步误差对系统性能的影响,并对系统的同步估计算法进行了分析与研究。
In the system of 802.16e,the receiver has high requirements for synchronization accuracy and synchronization error will lead to a sharp decline in system performance.In this paper,the basic concepts and architecture of OFDM are introduced,and the effects of synchronization errors on system performance are also analyzed,at last,the system synchronization estimation algorithm is researched.
出处
《大众科技》
2012年第4期75-77,共3页
Popular Science & Technology
关键词
OFDMA
循环前缀
同步
最大似然估计
OFDMA
Cyclic prefix
Synchronization
Maximum likelihood estimation
