OFDM系统中频域同步技术及FPGA实现

Frequency Synchronization and FPGA Implementations in OFDM Systems

针对OFDM系统频域中的整数倍频率偏移、小数倍频率偏移、采样钟频率偏移和定时偏移等问题,本文提出了相应的解决方案,并采用FPGA对各方法进行硬件电路实现。这些硬件实现方法巧妙,估计精确,能节省大量硬件资源。通过实际的电路时序波形仿真验证,证明了这些方法的实用性。

An efficient, accurate, hardware-based method realized via FPGA was proposed to dissolve the problems of integer frequency offset, fraction frequency offset, sample frequency offset and timing offset in OFDM system, etc. Practicalities of these methods were proved by the time wave simulation test.