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http://dx.doi.org/10.7840/kics.2013.38C.11.1051

Low Complexity LSD Scheme for Joint Iterative MIMO Detection  

Ahmed, Saleem (전북대학교 전자공학부 IT융합연구센터)
Kim, Sooyoung (전북대학교 전자공학부 IT융합연구센터)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38C, no.11, 2013 , pp. 1051-1059 More about this Journal
Abstract
This paper proposes a complexity reduced list sphere decoding (LSD) scheme for joint iterative soft detection scheme for coded MIMO system. The conventional LSD scheme is based on searching the candidates with a fixed radius. However, once the candidate list is full, it is highly probable that the radius can be reduced. By reducing the radius, the complexity can be also reduced. We propose a simple and efficient radius update method for complexity reduction of list version sphere decoding and its application to iterative soft MIMO detection. We evaluate the performance of the proposed scheme with a joint soft-input-soft-ouput iterative MIMO detection in combination with turbo codes. Simulation results show that the proposed methods provide substantial complexity reduction while achieving similar bit error rate (BER) performance as the conventional LSD scheme.
Keywords
List sphere decoding (LSD); MIMO; Coded MIMO;
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1 C. Berrou and A. Glavieux,. "Near optimum error correcting coding and decoding: turbo-codes," IEEE Trans. Commun., vol. 44, no. 10, pp. 1261-1271, Oct. 1996.   DOI   ScienceOn
2 B. M. Hochwald and S. Ten Brink, "Achieving near capacity on a multiple antenna channel," IEEE Trans. Commun., vol. 51, no. 3, pp. 389-399, Mar. 2003.   DOI   ScienceOn
3 J. G. Foshini, "Layered space-time architecture for wireless communication in a fading environment when using multi element antennas," Bell labs Tech. J., vol. 2, pp. 41-59, Autumn 1996.
4 W. Ping and T. Le-Ngoc. "A list sphere decoding algorithm with improved radius setting strategies," J. Wireless Personal Commun., vol. 61, no. 1, pp. 189-200, Nov. 2011.   DOI
5 J. Lee, B. Shim, and I. kang. "Soft-input soft-output list sphere detection with a probabilistic radius tightening," IEEE Trans. Wireless Commun., vol. 11, no. 8, pp. 2848-2857, Aug. 2012.
6 S. Ahmed and S. Kim, "Complexity reduced LSD scheme for joint iterative MIMO detection," in Proc. KICS Summer Conf. 2013, pp. 1082-1083, Jeju Island, Korea, June 2013.
7 Y. L. C. de Jong and T. J. Willink, "Iterative tree search detection for MIMO wireless systems," in Proc. IEEE VTC, vol. 2, pp. 1041-1045, Vancouver, Canada, Sep. 2002.
8 C. Studer, A. Burg, and H. Bolcskei, "Soft-output sphere decoding: Algorithms and VLSI implementation," IEEE J. Select. Areas Commun., vol. 26, no. 2, pp. 290-300, Feb. 2008.   DOI   ScienceOn