IEEE 802.11n WLAN을 위한 FFT 프로세서의 하드웨어 복잡도 최적화에 대한 연구
A Study on Optimization of Hardware Complexity of a FFT Processor for IEEE 802.11n WLAN
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초록
A FFT/IFFT processor is the key component for orthogonal frequency division multiplexing (OFDM) systems based IEEE 802.11n wireless local area network (WLAN). There exists many radix algorithms according to the structure of butterfly as FFT sub-module, each has the pros and cons on hardware complexity. Here, mixed radix algorithms for 64 and 128 FFT/IFFT processors are proposed, which reduce hardware complexity by using mixture of radix-23 and radix-4 algorithms. The proposed algorithm finish calculation within 3.2㎲ in order to meet IEEE 802.11n standard requirements and it has less hardware complexity compared with conventional algorithms.
Abstract
A FFT/IFFT processor is the key component for orthogonal frequency division multiplexing (OFDM) systems based IEEE 802.11n wireless local area network (WLAN). There exists many radix algorithms according to the structure of butterfly as FFT sub-module, each has the pros and cons on hardware complexity. Here, mixed radix algorithms for 64 and 128 FFT/IFFT processors are proposed, which reduce hardware complexity by using mixture of radix-23 and radix-4 algorithms. The proposed algorithm finish calculation within 3.2㎲ in order to meet IEEE 802.11n standard requirements and it has less hardware complexity compared with conventional algorithms.
참고문헌 (9)
- Bo Fu, "An area efficient FFT", IFFT processor for MIMO-OFDM WLAN 802.11n, 2009, pp.56, 59~68
- 조용수, "무선 멀티미디어 통신을 위한 OFDM 기초" (2001), 대영사
- 이홍원, "UWB-MIMO 시스템의 프리엠블 구조 설계", 대한임베디드공학회논문지, 2(1), pp.66~75 (2007), 대한임베디드공학회
- M.P.Chitra, "High Speed Mixed Radix FFT", IFFT Pipelined Architecture for MIMO OFDM WLAN 802.11n, 2009, pp.37(1), 153~159
- Chin-Teng Lin, "A low-power 64-point FFT", IFFT design for IEEE 802.11a WLAN application, 2006, 4523~4526
- Koushik Maharatna, "A 64-point fourier transform chip for high-speed wireless LAN application using OFDM", IEEE Journal of Solid-state Circuits, 39(3), pp.484~493 (2004)
- H. Shousheng, "Designing pipeline FFT processor for OFDM (de)Modulation", Signals, Systems, and Electronics, IEEE URSI Intenational Symposium, 29, pp.257~262 (1998)
- L. Yu-Wei, "Design of an FFT", IFFT processor for MIMO OFEM Systems, 2007, pp.54(4), 807~815
- Anthony T. Jacobson, "The design of a reconfigurable continuous-flow mixed-radix FFT processor", IEEE International Symposium Circuits and Systems (ISCAS), pp.1133~1136 (2009)