標題: Low-Cost Parallel FFT Processors with Conflict-Free ROM-Based Twiddle Factor Generator for DVB-T2 Applications1
作者: Jui, Ping-Chang
Wey, Chin-Long
Shiue, Muh-Tian
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Fast Fourier transform (FFT);orthogonal;Butterfly Processing Element (PE);Twiddle Factors;ROM;Conflict-free ROM Addressing Scheme
公開日期: 2013
摘要: This paper presents a conflict-free ROM addressing scheme for generating the TF tables. Basically, the conventional (N/2)-words ROM table for the Radix-2 Memory-Based FFT (MBFFT) processor with single process element (PE) is equally partitioned into 2(p) sub-tables allowing all 2(p) PEs to simultaneously access the twiddle factors without causing any conflict. This study presents the use of MBFFT processor with 4 parallel PEs. Result show that the proposed scheme can reduce the chip area of DVB-T2 applications by 18.85%. The hardware reduction is of significance.
URI: http://hdl.handle.net/11536/135384
ISBN: 978-1-4799-0066-4
ISSN: 1548-3746
期刊: 2013 IEEE 56TH INTERNATIONAL MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS (MWSCAS)
起始頁: 1003
結束頁: 1006
顯示於類別:會議論文