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 |