Browse > Article
http://dx.doi.org/10.5207/JIEIE.2002.16.5.066

The implementation of a low-power-consumptive OFDM LSI for the high speed indoor wireless LAN  

차재상 (서경대학교 정보통신공학과)
김성권 (일본 동북대학교 대학원 전자공학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.16, no.5, 2002 , pp. 66-74 More about this Journal
Abstract
OFDM(Orthogonal Frequency Division Multiplexing)is a one of the nst promising digital modulation techniques adapted for Digital audio broadcasting or Digital TV since it is very robust against multipath fading channels. From 1997, since the OFDM technique was considered as the physical layer standard for the high data rate wireless LAN systems in the 5㎓ band, related studies have been studied actively. The key element to implement high data rate wireless LAN system using OFDM technique are IFFT and FFT modules. In this paper, new IFFT and FFT module are designed and implemented using current cut circuit based on the matrix-rounding process for the low-power consumptive operation and high-speed data processing. In addition to, we certify the available operation of the rounded IFFT/FFT module in the AWGN channel by using the BER performance simulation of IEEE 802.11TGa based OFDM modem with rounded IFFT/FFT module.
Keywords
OFDM; IFFT; FFT; rounding; IEEE 802.11TGa LAN;
Citations & Related Records
연도 인용수 순위
  • Reference
1 IEEE802.11 TGa Standards
2 K. Togura, H. Nakase, K. Kubota, K. Masu, and K. Tsubouchi, "Low Power Current-Cut Switched-Current Matched Filter for CDMA", IEICE Trans., Electron, Vol. E84-C, No.2, pp. 212-219, Feb., 2001.
3 M. Song, Y. Lee and W. Kim, "A clock feedthrough reduction circuit for switched-current systems", IEEE Journal of Solid-State Circuits, Vol.28, pp. 133-137, Feb., 1993.   DOI   ScienceOn
4 M. Morikura, and H.Matsue, "Trends of IEEE802.11 based Wireless LAN", IEICE Journal B, Vol.J84-B, No.11, pp.1918-1927, Nov.2001.
5 K. Togura, K. Kubota, H. Nakase, K. Masu and K. Tsubouchi, "Novel low-power switched current matched filter for direct-sequence code-division-multiple-access wireless communication", Jpn. J. Appl. Phys. 39 Part 1, No. 4B, 2000.
6 B.M. Baas, "A low-power, high-performance, 1024-point FFT processor", IEEE Journal of Solid-State Circuits, Vol.34, pp. 380-387, Mar., 1999.   DOI   ScienceOn