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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jen-Chih Kuo Ching-Hua Wen An-Yeu Wu |
| Copyright Year | 2003 |
| Description | Author affiliation: Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan (Jen-Chih Kuo; Ching-Hua Wen; An-Yeu Wu) |
| Abstract | Orthogonal Frequency Division Multiplexing (OFDM) system is famous for its robustness against frequency selective fading channel. The Fast Fourier Transform (FFT) and Inverse FFT (IFFT) processor ire used as the modulation/demodulation kernel in the OFDM systems. The sizes of FFT/IFFT processors are varied in the different applications of OFDM systems. In this paper, we design and implement a programmable 64/spl sim/2048-point FFT/IFFT processor to cover the different specifications of OFDM applications. The cached-memory architecture is our suggested VLSI system architecture. We implement the Processing Element (PE) by using CORDIC algorithm to replace the multiplier-based PE. We also proposed /spl pi//4-prerotation and modified EEAS-CORDIC VLSI architecture to reduce the iteration number and quantization noise. Finally, we implement the FFT processor with TSMC 0.35 /spl mu/m IP4M CMOS technology. The die area of the FFT/IFFT processor is 12.25 mm/sup 2/ including 2048/spl times/32 bits memory. The input/output wordlength is 16-bit wide. The chip can operate under 80 MHz and meet most standard requirements (64/spl sim/2048 points). |
| Sponsorship | IEEE Circuits & Syst. Soc Mahanakorn Univ. Technol |
| File Size | 246985 |
| File Format | |
| ISBN | 0780377613 |
| DOI | 10.1109/ISCAS.2003.1205908 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-05-25 |
| Publisher Place | Thailand |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Very large scale integration CMOS technology Robustness Fading Fast Fourier transforms OFDM modulation Demodulation Kernel Quantization Noise reduction |
| Content Type | Text |
| Resource Type | Article |
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