宽带OFDM系统定时同步的硬件实现

Hardware realization of timing synchronization in broadband OFDM system

针对宽带OFDM系统中的定时同步问题,提出了一种基于DSP和FPGA混合结构的硬件实现方案。相对于全FPGA的实现方案,该方案具有资源消耗少,定时精度高等一系列特点,并且具有灵活的可扩展性,可以满足多种通信协议的定时同步实现。在无线环境下的实验结果验证了该方案在实际系统中的可行性,以及优良的定时和调整能力。

A hardware- based solution of mixing DSP and FPGA is proposed in this paper as to the timing synchronization of broadband OFDM system. Compared with full FPGA sohion, the proposed one has less resource consumption, high timing accuracy and flexible extensibility. In can meet the needs of timing synchronization of many kinds of communication protocols. Supreme capability of timing and adjustment has been proved for this solution by experiment under wireless environments.