한국통신학회논문지 (The Journal of Korean Institute of Communications and Information Sciences)

  • 제31권7C호
  • /
  • Pages.665-671
  • /
  • 2006
  • /
  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

MCS 레벨 선택 방식에 따른 AMC-MIMO 결합 시스템의 성능 비교

Perfonnance Analysis of the Combined AMC-MIMO Systems with MCS Level Selection Method

  • 황인태 (전남대학교 전자컴퓨터공학부) ;
  • 강민구 (한신대학교 정보통신학과)
  • 발행 : 2006.07.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 논문에서는 AMC-V-BLAST(Adaptive Modulation and Coding-Vertical-Bell-lab Layered Space-Time) 결합 시스템에 각 레이어 별로 독립적인 MCS(Modulation and Coding Scheme) 레벨을 적용한 경우의 시스템 구조를 제시후 성능을 관찰한다. 그리고 공통적인 MCS 레벨이 적용된 결합 시스템의 성능에 비하여 어느정도의 전송률 향상이 있는가를 살펴본다. 실험결과, 독립적인 MCS 레벨이 적용된 경우가 레이어 별로 각 채널상태에 따라 최대한의 전송률을 얻기 위한 변조 및 코딩 방식이 선택되므로 공통 MCS 레벨을 척용한 경우에 비하여 전송률 성 능이 우수함을 보였다 . 특히 독립적인 MCS 레벨을 적용한 AMC-V-BLAST 결합 시스템의 약 $7dB{\sim}9dB$ SNR 구간에서 700kbps 개선을 확인하였다.

In this paper, we propose and observe a system that adopts Independent-MCS (Modulation and Coding Scheme) level for each layer in the combined AMC-V-BLAST (Adaptive Modulation and Coding-Vertical-Bell-lab Layered Space-Time) system. Also, comparing with the combined system using Common-MCS level, we observe throughput performance improvement. As a result of simulation, Independent-MCS level case adapts modulation and coding scheme for maximum throughput to each channel condition in separate layer, resulting in improved throughput compared to Common-MCS level case. Especially, the results show that the combined AMC-V-BLAST system with Independent-MCS level achieves a gain of 700kbps in $7dB{\sim}9dB$ SNR (Signal-to-Noise Ratio) range.

키워드

참고문헌

  1. J. H. Winters, 'The Diversity Gain of Transmit Diversity in Wireless Systems with Rayleigh Fading,' IEEE Trans. on Veh. Tech. Vol.47, No.1, pp.119-123, February 1998 https://doi.org/10.1109/25.661038
  2. S. M. Alamouti, 'A Simple Diversity Technique for Wireless Communications,' IEEE Journal on select areas in communications, Vol.16, No.8, pp.1451-1458, October 1998 https://doi.org/10.1109/49.730453
  3. G.. J. Foschini, 'Layered Space-Time Architecture for Wireless Communication in a Fading Environment When Using Multi- Element Antennas,' Bell Labs Technical Journal, Autumn 1996
  4. P. Bender, P. Black, M. Grob, R. Padovani, N. Sindhushayana, and A. Viterbi, Qualcomm, Incorporated, 'CDMA/HDR : A BandwidthEfficient High-Speed Wireless Data Service for Nomadic Users,' IEEE Comm. Magazine, pp.70-77, July 2000
  5. A. J. Goldsmith, and S.G. Chua, 'Adaptive Coded Modulation for Fading Channels,' IEEE Trans. on Comm., Vol.46, No.5, pp.595-602, May 1998 https://doi.org/10.1109/26.668727
  6. F.R. Farrokhi, G. J. Foschini, A. Lozano, and R. A. Valenzuela, 'Link-Optimal BLAST Processing with Multiple-Access Interference,' VTC2000 Fall, Voll, pp.87-91, September 2000
  7. A. Bhargave; R.J.P. de Figueiredo, T. Eltoft, 'A Detection Algorithm for the V -BLAST System,' GLOBECOM '01. IEEE, Vol.1 , pp. 494 - 498, November 2001
  8. Z. W. Catherine, H. Sweatman, J. S. Thompson, B. Mulgrew, and P. M. Grant, 'Comparison of Detection Algorithm including BLAST for Wireless Communication using Multiple Antennas,' PIMRC'00, Vol.1, pp.698-703, 2000
  9. M. A. Beach, D. P. McNamara, P. N. Fletcher, and Karisson, 'MIMO-A solution for advanced wireless access?,' 11th international conference on Antennas. and Propagation, No.480, pp.231-235, April 2001
  10. P. W. Wolniansky, G. J. Foschini, G. D. Golden, and R. A. Valenzuela, 'V-BLAST: An Architecture for Realizing Very High Data Rates Over the Rich-Scattering Wireless Channel,' ISSSE'98, pp.295-300, 1998
  11. 3GPP2 C.P9010, 'Draft baseline text for the physical layer portion of the IX EV specification,' pp. 9-78, August 2000
  12. I. T. Hwang, J. Y. Son, S. K. Hahn, M. G. Kang, Y. H. You, and C. E. Kang, 'Improvement of AMC-MIMO multiplexing systems with selection transmit diversity techniques,' IEICE Trans. on Commun., Vol.E87-B, no.6, pp.1684-1687, June 2004