Title :
Efficient algorithms of FFT butterfly for OFDM systems
Author :
Tian, Jifeng ; Xu, Youyun ; Jiang, Haining ; Luo, Hanwen ; Song, Wentao
Author_Institution :
Mobile Commun. Lab., Shanghai Jiao Tong Univ., China
fDate :
31 May-2 June 2004
Abstract :
In this article, the FPGA realization of FFT processor in OFDM systems is considered. After the analysis of conventional FFT architectures, parallel butterfly algorithm is proposed. And then, based on it, dual butterfly algorithm is put forward. The FFT architecture with these algorithms has higher throughput and requires relatively small areas.
Keywords :
OFDM modulation; fast Fourier transforms; field programmable gate arrays; parallel algorithms; parallel architectures; program processors; FFT processor; FPGA realization; OFDM systems; parallel-dual butterfly algorithm; Clocks; Digital audio broadcasting; Digital video broadcasting; Field programmable gate arrays; Hardware; OFDM modulation; Parallel architectures; Pipelines; Process design; Throughput;
Conference_Titel :
Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on
Print_ISBN :
0-7803-7938-1
DOI :
10.1109/CASSET.2004.1321923
