An area-efficient FFT architecture for OFDM digital video broadcasting

作者：Jiang Richard A^*

来源：IEEE Transactions on Consumer Electronics, 2007, 53(4): 1322-1326.

DOI：10.1109/TCE.2007.4429219

• OFDM demodulation
• FFT
• DVB-T
• HDTV

In this paper, a novel high-performance 8k-point fast Fourier transform(DFT) processor architecture for OFDM digital video broadcasting(DVB) is proposed based on a novel radix-8 FFT architecture. Distributed arithmetic(DA) is used to implement the basic 8-point FFTs directly, where the hardware cost of complex multipliers and adders can be greatly reduced. The twiddle multiplications are performed by CORDIC-based twiddle multipliers. The results show that the proposed processor architecture can greatly save the area cost while keeping a high-speed processing speed, which may be attractive for many real-time DVB-T systems(1).

• 出版日期2007-11
• 单位北京大学