Title :
VLSI implementation of fast Fourier transformation for OFDM-based high-speed wireless applications
Author :
Jiang, Ming ; Yang, Bing ; Fu, Yiling ; Jiang, Anping ; Wang, Xin-An ; Gan, Xuewen ; Zhao, Bayijng ; Zhang, Tianyi
Author_Institution :
Sch. of Comput. Sci. & Electr. Eng., Peking Univ., Beijing, China
Abstract :
In this paper, we introduce a fixed-point 16-bit 64 point FFT processor architecture for OFDM-based wireless applications. The processor is based on the DIT (decimation-in-time) radix-2 butterfly FFT algorithm. A canonical signed digit is used to implement constant complex multiplications with a CSA tree for lower power and cost. The simulation shows the module can reach low cost/power and high speed for OFDM-based high-speed wireless applications.
Keywords :
OFDM modulation; VLSI; fast Fourier transforms; fixed point arithmetic; logic circuits; low-power electronics; 16 bit; CSA tree; DIT radix-2 butterfly algorithm; OFDM-based high-speed wireless; VLSI; canonical signed digits; constant complex multiplications; decimation-in-time; fast Fourier transformation; fixed-point FFT processor; low power module; Amplitude modulation; Application software; Computer architecture; Decoding; Energy consumption; Hardware; Phase modulation; Quadrature amplitude modulation; Very large scale integration; Viterbi algorithm;
Conference_Titel :
Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on
Print_ISBN :
0-7803-8511-X
DOI :
10.1109/ICSICT.2004.1435152
