基于LS信道估计的研究与改进

Research and Improvement of LS Channel Estimation

信道估计在通信系统中占据着非常重要的位置,在此介绍和分析传统的LS估计准则,提出改进的LS信道估计准则,建立改进LS信道估计的数学模型,并对改进的LS信道进行了仿真。仿真结果表明改进的LS估计能够降低估计偏差的影响,有比LS准则较低的误码率。

Channel estimation plays a very important role in OFDM communication system. With the introduction and analysis of traditional LS estimation, the author recommends an ameliorated LS estimation criterion, on which a mathematical model is created and stimulated. The stimulation results demonstrate that with lower BER the improved LS estimation, compared with traditional LS, can decrease the effects of estimation error.