基于IEEE802.11a的OFDM帧检测算法研究与FPGA实现

The frame detection algorithm of OFDM and FPGA implementation based on IEEE 802.11a

通过对传统基于能量值的帧检测算法的研究,采用了一种延时相关算法,克服了传统算法中能量值变化大的缺点,使阈值的选取较为简便,并基于FPGA硬件平台实现了该算法。硬件仿真结果表明,该算法达到了低运算量,具有可实现性的要求,是一种比较理想的帧检测算法。

This paper analyses the traditonal frame detection algorithm based on the energy value,and uses a algorithm of delay correlation.It overcomes the shortcoming of variable energy value in the traditonal algorithm,making the selection of the threshold more convenient,and accomplishes the algorithm in the FPGA-based hardware platform.The hardware simulation results show that, the algorithm achieves a low complexity and it can be accomplished. So the delay correlation is an ideal frame detection algorithm.