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

한국통신학회 (The Korean Institute of Commucations and Information Sciences)
권호 표지

실내 환경의 채널에서 MIMO 안테나로 구성된 UWB 시스템의 성능 분석

Performance Analysis of a UWB System with MIMO Antennas in Indoor Channel Environments

  • 김수남 (국민대학교 전자정보통신공학부) ;
  • 강동욱 (국민대학교 전자정보통신공학부) ;
  • 김기두 (국민대학교 전자정보통신공학부)
  • 발행 : 2004.11.01
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초록

WPAN의 통신방식으로 표준화 작업이 진행 중에 있는 U(Ultra Wide Band)는 기존 시스템과 간섭으로 인하여 전송 전력에 큰 제약이 따른다. 본 논문에서는 이러한 문제점을 극복하기 위한 방안으로 여러 개의 송수신 안테나 구성에 의한 MIMO(Multi-Input Multi-Output) 채널을 형성하고 이에 따른 성능을 분석한다. 또한 MIMO 채널 형성 시 발생되는 안테나 사이의 간섭을 시뮬레이션을 통하여 획득하고 이것이 시스템에 미치는 영향을 분석한다. 본 논문에서 제안하는 UWB 시스템은 다중경로로 인한 신호간의 간섭 및 다중 사용자로 인한 간섭을 상쇄시키는 최소제곱(least square) 방식과 ML 검출기(Maximum Likelihood Detector) 구조를 갖는다.

UWB(Ultra Wide Band) under standardization for WPAN has a restriction in transmitting power because of interference with existing systems. To overcome the restriction, in this paper, we construct the MIMO(Multi-input-Multi-Output) channel using multi-transmit/receiver antennas and analyze the performance of the proposed system. In addition, through numerical simulation, we obtain the interference property among these antennas and analyze the effect of an interference to the system. The proposed UWB system has a ML detector and the least square method will be used to cancel the multi-user interference and the inter symbol interference caused by multipath.

키워드

참고문헌

  1. Federal Communications Commission (FCC). Revision of Part 15 of the commissions rules regarding ultra-wideband transmission systems. First Report and Order, ET Docket 98-153, FCC 02-48, adopted on february 14, 2002, released on April 22, 2002. [Online] Available: http://www.fcc.gov
  2. E. Baccarelli, M. Biagi, C. Pelizzoni, and P. Bellotti, 'A novel multi-antenna impulse radio UWB transceiver for broadband high-throughput 4G WLAN,' IEEE Communication Letters, vol. 8, pp. 419-421, July 2004 https://doi.org/10.1109/LCOMM.2004.832747
  3. M. Weisenhorn and W. Hirt, 'Performance of binary antipodal signaling over the indoor UWB MIMO channel,' IEEE International Conf. on Communications, vol. 4, pp. 2872-2878, May 2003
  4. W. Siriwongpairat, M. Olfat, and K. J. R. Liu, 'On the performance evaluation of TH and DS UWB MIMO system,' IEEE Wireless Communications and Networking Conf. vol. 3, pp. 1800-1805, March 2004
  5. B. M Hochwald and T. L. Marzetta, 'Unitary space-time modulation for multiple-antenna communications in Rayleigh flat fading,' IEEE Trans. on Information Theory, vol. 40, no. 2, pp. 543-564, March 2000
  6. C. J. Le Martret and G. B. Giannakis, 'All-digital impulse radio with multiuser detections for wireless cellular systems,' IEEE Trans. on Communications, vol. 50, no. 9, pp. 1440-1450, September 2002 https://doi.org/10.1109/TCOMM.2002.802559
  7. J. Proakis, Digital Communications, New York: McGraw -HiIl, 1995
  8. M. Z. Win, X. Qiu, R. A. Scholtz, and V. O. K. Li, 'ATM-based TH-SSMA network for multimedia PCS,' IEEE J, Select. Areas Communications, vol. 17, pp. 824-836, May 1999 https://doi.org/10.1109/49.768198
  9. J. Kunisch and J. Pamp. (2002, June) Radio channel model for indoor UWB WPAN environments. 022881r0P802-15_SGa-IMST- Response-Call-Contributions-UWB-Channel Model.pdf. Proposal for IEEE P802.15.3a channel model. [Online] Available: http://grouper.ieee.org/groups/802/15/pub(2002/Ju102/
  10. J. Kunisch and J. Pamp, ,' IEEE Conf. on UWB systems and Technologies, pp. 290-294, November 2003