基于FPGA的无线移动通信系统多普勒补偿算法

利用FPGA对一种移动无线通信系统中的多普勒补偿算法进行了实现与验证。首先,对这种基于正交频分复用(OFDM)帧结构的多普勒补偿算法进行了简要介绍,该算法具有计算复杂度低、延时小、便于硬件实现的特点;然后,详细说明了该算法在实际硬件实现中各个模块的逻辑结构和工作流程;最后,将本文所实现的多普勒补偿算法模块应用到了实际的OFDM接收机中,通过硬件测试对算法和硬件实现的有效性进行了验证,并分析了算法的资源开销以及相比原算法的性能增益。

A Doppler Compensation Algorithm in the Wireless Mobile Communication System Based on FPGA

Based on the FPGA, a Doppler compensation algorithm in the mobile wireless communication system is realized and verified. First, this Doppler compensation algorithm based on the orthogonal frequency division multiplexing (OFDM) frame structure is briefly introduced. This algorithm has low computational complexity and low latency, and it is easily implemented by the hardware. Then, the logical structure and process of each module of the algorithm in the hardware implementation is described in detail. Finally, the Doppler compensation module is applied to the actual OFDM receiver, and the validity of the algorithm hardware implementation is verified by hardware tests. The resource consumption and performance gain compared to the original algorithm are analyzed.