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A Computationally Efficient Signal Detection Method for Spatially Multiplexed MIMO Systems  

Im, Tae-Ho (중앙대학교 전자전기공학부 디저털통신연구실)
Kim, Jae-Kwon (연세대학교 원주캠퍼스 컴퓨터정보통신공학부)
Yi, Joo-Hyun (삼성전자 정보통신연구소)
Yun, Sang-Boh (삼성전자 정보통신연구소)
Cho, Yong-Soo (중앙대학교 전자전기공학부 디저털통신연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.7C, 2007 , pp. 616-626 More about this Journal
Abstract
In spatially multiplexed MIMO systems that enable high data rate transmission over wireless communication channels, the spatial demultiplexing at the receiver is a challenging task, and various demultiplexing methods have been developed recently by many researchers. Among the previous methods, maximum likelihood detection with QR decomposition and M-algorithm (QRM-MM)), and sphere decoding (SD) schemes have been reported to achieve a (near) maximum likelihood (ML) performance. In this paper, we propose a novel signal detection method that achieves a near ML performance in a computationally efficient manner. The proposed method is demonstrated via a set of computer simulations that the proposed method achieves a near ML performance while requiring a complexity that is comparable to that of the conventional MMSE-OSIC. We also show that the log likelihood ratio (LLR) values for all bits are obtained without additional calculation but as byproduct in the proposed detection method, while in the previous QRM-MLD, SD, additional computation is necessary after the hard decision for LLR calculation.
Keywords
MIMO Detection; Spatially Multiplexing; MMSE-OSIC; QRM-MID; Sphere Decoding;
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1 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,' Proc. USRI ISSSE, pp. 295-300, Sept. 1998
2 J. B. Anderson and S. Mohan, 'Sequential coding algorithm - A survey and cost analysis,' IEEE Trans. Commun., vol. COM-32, pp. 169-176, Feb. 1984
3 S. M. Alamouti, 'A simple transmit diversity technique for wireless communications,' IEEE J. Sel. Alreas Commun., vol. 16, no. 10, pp.1451-1458, Oct. 1998   DOI   ScienceOn
4 S. Sanhdu and A. Paulraj, 'Space-time block codes: a capacity perspective', IEEE Commun. Letters, vol. 4, no. 12, pp.384-386, Dec. 2000   DOI   ScienceOn
5 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
6 D. W. Waters and J. R. Barry, 'Noisepredictive decision feedback detection for multiple-input multiple-output channels,' Proc. IEEE Int. Symp. Advances Wireless Commun., Victoria, Canada. Sept. 2002
7 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 multuplexing in multipath fading channel,' IEICE Trans, Commun., vol. E88-B, no. 1, pp.57-57, Jan. 2005
8 D. Yongmei, S. Sumei, and L. Zhongding, 'A comparative study of QRD-M detection and sphere decoding for MIMO-OFDM systems,' Proc. PIMRC, Berlin, pp.11-14, Sept. 2005
9 M. O. Damen, A. Chkeif, and J. C. Belfiore, 'Lattice code decoder for space-time codes,' IEEE Commun. Lett., pp.161-163 May 2000
10 A. F. Naguib, N. Seshadri, and A. R. Calderbank, 'Increasing data rate over wireless channel,' IEEE Signal Process. Mag., vol. 17, no. 2, pp. 744-765, Mar. 1998
11 B. M. Hochwald and S. Brink, 'Achieving near-capacity on a multiple-antennas channel,' IEEE Trans. Commun., vol. 51, no. 3, pp. 389-399, Mar. 2003   DOI   ScienceOn
12 J. Kim, Y. Kim, K. Kim, 'Computationally efficient signal detection method for next generation mobile communications using multiple antennas,' SK Telecommun. Review, vol. 17, no 1C, pp.183-191, Feb. 2007
13 K. J. Kim and J. Yue, 'Joint channel estimation and data detection algorithms for MIMO-OFDM systems,' Proc. 36th Asilomar Conf. Signals, Syst., Comput., pp.295-300, 2002
14 G. J. Foschini, 'Layered space-time architecture for wireless communication in a fading environment when using multiple antennas,' Bell Lab. Techinical Journal, vol. 1, no. 2, pp.41-59, Aug. 1996   DOI   ScienceOn
15 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