摘要
提出了利用循环前缀对信道进行估计的方法,即在梳状导频模式时,使用导频获得导频子信道频率响应后,对其在频域方向进行插值得到数据子信道响应,在以后没有导频的序列的数据周期内,使用循环前缀对信道进行估计.仿真结果表明:和两个一维的插值方法相比,在不降低系统性能的情况下,改善了系统的实时性能.
Channel estimation method based on cyclic prefix is proposed, that is interpolating for the estimated channel frequency response at the pilot subchannel and obtaining the frequency response at data subchannel during pilot frames, and then estimating channel frequency response by cyclic prefix during data frames. Simulation result shows that system performance and reality is improved comparing the two one dimension interpolation method.
出处
《兰州交通大学学报》
CAS
2006年第3期81-83,88,共4页
Journal of Lanzhou Jiaotong University
关键词
正交频分复用
循环前缀
信道估计
OFDM（Orthogonal Frequency Division Modulation）
cyclic prefix
channel estimation
