基于导频的OFDM系统信道估计算法研究及实现

Investigation and Implementation of Pilot-Aided Channel Estimation Approach in OFDM System

介绍了基于导频的OFDM系统信道估计方法,对典型估计方法的算法复杂性进行了分析比较,并在此基础上给出了频域导频时域平均信道估计算法的硬件电路FPGA实现方案,对FPGA设计的主要模块进行了详细说明,以Altera的StratixII芯片为平台完成仿真和综合。系统分析和FPGA电路综合结果表明:相比传统的频域信道估计算法,该算法节省资源,更利于硬件实现。

Different pilot-aided approaches for OFDM channel estimation are investigated and compared. Based on this comparison, a scheme for FPGA implementation is proposed, and then we discuss the most significant modules of the system in depth. Finally, the device in Altera StratixⅡ family is selected for the implementation of the system. The synthesizing and timing simulation result shows that this channel estimation approach has some merits, such as simple implementation and less consumption of resources.