Browse > Article

A Reduced Complexity QRM-MLD for Spatially Multiplexed MIMO Systems  

Im, Tae-Ho (중앙대학교 전자전기공학부 디지털통신연구실)
Kim, Jae-Kwon (연세대학교 원주캠퍼스 컴퓨터정보통신공학부)
Cho, Yong-Soo (중앙대학교 전자전기공학부 디지털통신연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.1C, 2007 , pp. 43-50 More about this Journal
Abstract
In the paper, we address QRM-MLD (Maximum Likelihood Detection with QR Decomposition and M-algorithm) signal detection method for spatially multiplexed MIMO (Multiple Input Multiple Output) systems. Recently, the QRM-MLD signal detection method which can achieve 1Gbps transmission speed for next generation mobile communication was implemented in a MIMO testbed for the mobile moving at a pedestrian speed. In the paper, we propose a novel signal detection method 'reduced complexity QRM-MLD' that achieves identical error performance as the QRM-MLD while reducing the computational complexity significantly. We rigorously compare the two detection methods in terms of computational complexity to show the complexity reduction of the proposed method. We also perform a set of computer simulations to demonstrate that two detection methods achieve identical error performance.
Keywords
MIMO; QRM-MID; QR Decomposition;
Citations & Related Records
연도 인용수 순위
  • Reference
1 W.Choi, R. Negi, and J.M.Cioffi, 'Combined ML and DFE decoding for the V-BLAST system,' in Proc. IEEE ICC, pp. 1243-1248, June 2000
2 김재권, 김영수, 김기호, '공간다중화 방식을 사용하는 다중 안테나 시스템을 위한 효율적 신호검출기법 및 하드웨어 구현,' 통신정보합동학술대회 2006
3 David Gesbert, Luc Haumonte, Helmut Bolcskei, Rajeev Krishnamoorthy, Arogyaswami J. Paulraj, 'Technologies and Performance for Non-Line-of-Sight Broadband Wireless Access Network,' IEEE Commun. Mag., Apr. 2002
4 R. Narashimhan, 'Error propagation analysis of V-BLAST with channel estimation errors,' IEEE Trans. Commun., vol. 53, no. 1, pp. 27-31, Jan. 2005   DOI   ScienceOn
5 H. Kawai, K. Higuichi, N. Maeda, M. Sawahashi, T. Ito, Y. Kakura, A. Ushirokawa, and H. Seki, 'Likelihood Function for QRM-MLD suitable for soft-decision turbo decoding and its performance for OFCDM MIMO multiplexing in multipath fading channel,' IEICE Trans. Commun., vol. E88-B, no. 1, pp. 47-57, Jan. 2005   DOI
6 G.J. Foschini, 'Layered Space-Time Architecture for Wireless Communication in a Fading Environment When Using Multiple Antennas,' Bell Lab. Technical Journal, vol. 1, no. 2, pp. 41-59, Aug. 1996   DOI   ScienceOn
7 G.D Golden, C.J.Foschini, R.A.Valenzuela and P.W. Wolniansky, 'Detection algorithm and initial laboratory result using V-BLAST space time communication architecture,' IEE Electronics Letters, vol. 35, Jan, 1999
8 J. Yue, K.J. Kim, J.D. Gibson, and R.A. Iltis, 'Channel Estimation and Data Detection for MIMO-OFDM Systems,' in Proc. GLOBECOM 2003, pp. 581-585, 2003