正交频分复用系统信道估计技术研究

Channel estimation in orthogonal frequency division multiplexing system

在OFDM系统中,为了能达到系统需要的解码要求,必须进行准确的信道估计。首先介绍了OFDM系统基本原理,对基于叠加训练序列的OFDM系统信道估计算法进行了仿真分析,并比较了在不同ρ值情况下的性能,从而存在一个最优的ρ值取得最好的估计性能。

In order to achieve the requirements of decoding in the OFDM system, it is necessary to accurately estimate the channel. The paper first introduces the basic principles of OFDM systems, simulation analysis of the OFDM system based on superimposed training sequence channel estimation algorithm, and compares the performance in the case of different ρvalues, and thus an optimal pvalue to obtain the best estimation performance is obtained.