Title :
A 2K/8K mode small-area FFT processor for OFDM demodulation of DVB-T receivers
Author :
Wang, Chua-Chin ; Huang, Jim-Ming ; Cheng, Hsian-Chang
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
We present a novel implementation for 2K/8K dual-mode small-area FFT for the OFDM demodulator of DVB-T receivers. Besides pipelining the FFT to reduce the area and enhance the data throughput, SDF butterfly units for radix-2 and radix-4 processing are adopted to resolve the power consumption difficulty and the P&R (place and route) problem. SRAM is used in the butterfly units to relax the auto-refreshing requirement if DRAM is used.
Keywords :
OFDM modulation; demodulation; demodulators; digital video broadcasting; fast Fourier transforms; hypercube networks; pipeline processing; television receivers; video signal processing; DRAM; DVB-T receivers; FFT processor; OFDM demodulation; SDF butterfly units; SRAM; demodulator; pipelining; place and route problem; power consumption; radix processing; Consumer products; Delay; Demodulation; Digital TV; Digital video broadcasting; Energy consumption; OFDM modulation; Pipeline processing; Random access memory; Sun;
Conference_Titel :
Consumer Electronics, 2005. ICCE. 2005 Digest of Technical Papers. International Conference on
Print_ISBN :
0-7803-8838-0
DOI :
10.1109/ICCE.2005.1429769
