摘要
提出一种基于频率抽取算法的3780点IFFT处理器的设计方法。该处理器采用流水线结构,实现分级的频率抽取算法IFFT,同时根据频域交织,实现输入输出之间位置倒序。软硬件仿真表明该处理器具有节省交织模块、易于扩展和模块可复用等特点,适用于符合国家标准要求的调制与解调系统。
This paper introduces the design of a 3 780 points IFFT processor based on decimation in frequency （DIF） algorithm. This pipelined processor can realize muhi-stage DIF-IFFT. Meanwhile, the frequency interleaving requirement can also reverse orders of input and output positions. The simulation results of software and hardware indicate that this processor eliminates the independent frequency-interleaving module, and can be expanded and re-configured easily. It can be used in modulator and demodulator system that complies with the Chinese national standard.
出处
《电视技术》
北大核心
2007年第10期19-21,35,共4页
Video Engineering
基金
国家863项目(2006AA01Z279)
关键词
3
780点IFFT
频率抽取
旋转因子
频域交织
3 780-points IFFT
decimation in frequency
rotation factor
frequency interleaving
