ofdm的VHDL实现，包括fft,ifft,串并变换等，附详细说明文档,ofdm realization of VHDL, including the fft, ifft, such as string and transform, with detailed descr iption of the document

OFDM系统，包含QPSK星座映射、串并转换、IFFT变换、加保护间隔、求峰均比等。-OFDM system with QPSK constellation mapping, a serial-to-parallel conversion, IFFT transform, plus guard interval requirements such as peak-to-average ratio.