摘要
在使用空时编码的OFDM系统中,接收端为正确解码需要精确的信道估计信息。本文给出了一种基于空时编码训练序列的信道估计算法,这种算法基于空时分组码的正交性。模拟实验证明该算法适用于慢变瑞利衰落信道和时不变频率选择性衰落信道,同时该算法优于基于LS的算法。
Accurate channel estimation is needed in space-time coded OFDM systems for decoding purposes. In this paper, a novel channel tracking algorithm based on the orthogonality of space-time block codes is presented. The algorithm is tested via Monto Carlo computer simulations and it shows that the algorithm outperforms LS-based approach without additional complexity.
出处
《信息工程大学学报》
2005年第3期79-81,共3页
Journal of Information Engineering University
关键词
OFDM
空时分组码
信道估计
OFDM
space-time block codes
tracking algorithm
