摘要
Abstract
In view of the problem that traditional channel estimation algorithm based on Discrete Fourier Transform (DFT) does not eliminate the noise in the cyclic prefix length, the paper puts forward a new method of Orthogonal Frequency Division Multiplexing (OFDM) system channel estimation based on wavelet de-noising and DFT interpolation. In simulation on Matlab 2012b platform, compared with the traditional channel estimation al-gorithm based on DFT, under the conditions of the same Bit-Error-Rate (BER) or the same Mean-Square-Error (MSE) the Signal-to-Noise Rate (SNR) performance of the proposed algorithm improves a lot. The simulation re-sults show that the proposed algorithm can reduce the influence of the noise, improve the accuracy of channel esti-mation effectively, and has also have better performances than the channel estimation algorithm based on DFT.关键词
正交频分复用/信道估计/小波去噪/离散傅里叶变换Key words
OFDM/Channel Estimation/Wavelet De-Noising/DFT分类
信息技术与安全科学
