基于压缩感知的高速移动环境中OFDM信道估计

Channel estimation of OFDM system in high-speed mobile environment based on compressed sensing

针对目前高速移动信道中通信质量较差,为降低高速移动环境中信道估计误差,建立了以Winner Ⅱ信道为基础的高速信道OFDM系统仿真模型,通过压缩感知技术对移动信道进行估计,并与传统的信道估计方法进行比较。仿真结果表明,压缩感知技术能大幅度提高高速移动环境中的OFDM系统信道估计精度。

As high-speed mobile channel communication quality deteriorates and in order to lower the error of channel estimation in high-speed mobile environment, a high-speed channel OFDM system based on Winner II channel model was constructed. Compared with the traditional channel estimation method, compressed sensing technology was used to estimate channel quality in this model. The simulation indicates that the compressed sensing technology can significantly increase the accuracy of channel estimation in high-speed mobile environment of OFDM system.