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

  • 제32권7C호
  • /
  • Pages.644-651
  • /
  • 2007
  • /
  • 1226-4717(pISSN)
  • /
  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

신호 공간 다이버시티 기법을 이용한 OFDM 기반의 부호화된 시공간 전송기법

Coded Layered Space-Time Transmission with Signal Space Diversity in OFDM Systems

  • 김지훈 (고려대학교 전기전자전파공학부 무선통신연구실) ;
  • 이인규 (고려대학교 전기전자전파공학부 무선통신연구실)
  • 발행 : 2007.07.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

V-BLAST (Vertical Bell Labs Layered Space-Time) 시스템은 다중 안테나를 사용하는 시스템에서 각각의 레이어를 간섭 무효화 및 제거기법을 통하여 추정하기 때문에 간단한 복잡도에 비해 높은 전송률을 가능하게 한다. 본 논문에서는 신호 공간 다이버시티 기법을 적용시킨 V-BLAST 시스템을 제안하고자 한다. 신호 공간 다이버시티 기법의 큰 장점은 신호좌표를 회전시키고 인페이즈 (inphase) 와 쿼드러쳐 (quadrature) 성분을 섞어줌으로서 추가적인 대역폭이나 전송 파워의 상승 없이도 다이버시티 이득을 얻을 수 있다. 모의실험을 통해서, 본 논문에서 제안하는 시스템의 성능이 이상적인 시스템 성능에 비해 0.5dB로 근접함을 보여주고자 한다.

In multiple antenna systems, vertical Bell Labs Layered Space-Time (V-BLAST) systems enable very high throughput by nulling and cancelling at each layer detection. In this paper, we propose a V-BLAST system which combines with signal space diversity technique. The benefit of the signal space diversity is that we can obtain an additional gain without extra bandwidth and power expansion by applying inphase/quadrature interleaving and the constellation rotation. Through simulation results, it is shown that the performance of the proposed system is less than 0.5dB away from the ideal upper bound.

키워드

참고문헌

  1. G. J. Foschini and M. Gans, 'On Limits of Wireless Communications in a Fading Environment when Using Multiple Antennas,' Wireless Personal Comuunications, vol.6, pp.311-335, March 1998 https://doi.org/10.1023/A:1008889222784
  2. P. A. Dighe, R. K. Malik and S. S. Jamuar, 'Analysis of Transmit-Receive Diversity in Rayleigh Fading,', IEEE Transactions on Communications, vol. 51, pp.694-703, April 2003 https://doi.org/10.1109/TCOMM.2003.810871
  3. E. Biglieri, G. Taricco and A. Tulino, 'Performance of Space-Time Codes for a Large Number of Antennas,' IEEE Transactions on Information Theory, pp.1794-1803, July 2002
  4. J. H. Winters, J. Salz and R. D. Gitlin, 'The Impact of Antenna Diversity on the Capacity of Wireless Communication Systems,' IEEE Transactions on Communications, vol. 42, pp.1740-1751, Feb/Mar/Apr 1994 https://doi.org/10.1109/TCOMM.1994.582882
  5. E. Viterbo and J. Boutros, 'A Universal Lattice Code Decoder for Fading Channels,' IEEE Transactions on Information Theory, vol. 45, pp.1639-1642, July 1999 https://doi.org/10.1109/18.771234
  6. A. M. Chan and I. Lee, 'A New Reduced-Complexity Sphere Decoder for Multiple Antenna Systems,' in Proceedings of IEEE International Conference on Communications (ICC'02), vol. 1, pp.460-464, Apr/May 2002
  7. 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,' in URSI International Symposium on Signals, Systems and Electronics, pp.295-300, September 1998
  8. S. L. Ariyavisitakul, 'Turbo Space-Time Processing to Improve Wireless Channel Capacity,' IEEE Transactions on Communications, vol. 48, pp.1347-1359, August 2000 https://doi.org/10.1109/26.864172
  9. C. Shen, H. Zhuang, L. Dai and S. Zhou, 'Detection Algorithm Improving V-BLAST Performance over Error Propagation,' Electronics Letters, vol. 39, pp.1007-1008, June 2003 https://doi.org/10.1049/el:20030605
  10. X. Li, H. Huang. G. Foschini and R. A. Valenzuela, 'Effects of Iterative Detection and Decoding on the Performance of BLAST,' in Proceedings of IEEE Global Telecommunications Conference (GLOBECOM'00), vol. 2, pp.1061-1066, December 2000
  11. H. Lee and I. Lee, 'New Approach for Error Compensation in Coded V-BLAST OFDM Systems,' IEEE Transactions on Communications, vol. 55, No. 2, pp.345-355, February 2007 https://doi.org/10.1109/TCOMM.2006.887500
  12. J. Boutros and E. Viterbo, 'Signal Sapce Diversity : A Power- and Bandwidth- Efficient Diversity Technique for the Rayleigh Fading Channel,' IEEE Transactions on Information Theory, vol. 44, pp.1453-1467, July 1998 https://doi.org/10.1109/18.681321
  13. J. M. Chioffi, 379A Class note: Signal Processing and Detection. Stanford University
  14. H. V. Poor and S. Verdu, 'Probability of Error in MMSE Multiuser Detection,' IEEE Transactions on Information Theory, vol. 43, pp.858-871, May 1997 https://doi.org/10.1109/18.568697
  15. M. Z. A. Khan, B. S. Rajan and M. H. Lee, 'Rectangular Coordinate Interleaved Orthogonal Design,' in Proceedings of IEEE Global Telecommunications Conference (GLOBECOM'03), vol. 4, pp.2004-2009, December 2003