(Signal-to-Noise Ratio,SNR)估计的改进DFT信道估计算法.在最小二乘(Least Square,LS)算法的基础上,经过频域加窗处理后利用导频序列估计系统信噪比,将其转化为循环前缀内的降噪阈值门限,并进行两次降噪操作.仿真结果表明,改进后的算法不但可以有效地消除循环前缀内的噪声,而且在非整数倍时延信道下能够抑制能量泄露的...
In order to improve the channel estimation performance under the orthogonal frequency division multiplexing(OFDM) technology in current wireless communication systems, the defects of the channel estimation algorithm based on discrete Fourier transform(DFT) are studied. In view o...