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Extended-list SQRD-based Decoder for Improving BER Performance in V-BLAST Systems  

PHAM Van-Su (한국정보통신대학교 공학부)
LE Minh-Tuan (한국정보통신대학교 공학부)
YOON Giwan (한국정보통신대학교 공학부)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.9, no.7, 2005 , pp. 1452-1457 More about this Journal
Abstract
In the QR Decomposition-based (QRD) decoding class, the system performance is sensitive to the error propagation. Thus, it is critical to correctly decode the previous layers. One apprach to desensitize the error propagation is to propose the optimal decoding order of layers. In this wort we propose a new extended-list Soled QRD-based (SQRD) decoding approach. In the proposed decoding scheme, the solution of the few first layers is extended as the list of promising possible solutions. By doing so, the diversity of the lowest layer is increased. As a result, the system performance is less sensitive to the error propagation than its counterparts. The proposed approach is verified by the computer simulation results.
Keywords
Space Time Codes (STCs); Multiple-Input Multiple-Output (MIMO) system; V-BLAST; Wireless Communication System;
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  • Reference
1 Branka Vucetic and Jinhong Yuan, Space-Time Coding, 2003 edition, Wiley
2 D. Wubben, R. Bohnke, J. Rinas, V. Kuhn and K.D. Kammeyer, 'Efficient algorithm for decoding layered space-time codes', Electronics Letters, Vol.37, No.22, Oct. 2001, pp. 1348-1350   DOI   ScienceOn
3 Ronald Buhnke, Dirk Wubben, Volker Kuhn and Karl-Dirk Kammeyer, 'Reduced Complexity MMSE Detection for BLAST Architecture', GLOBECOM 2003, pp. 2258-2262
4 Phillip Conder and Tadeusz Wysocki, 'Increasing performance of SQRD decoding for LST systems', On the link www.elec.uow.edu.au/staff/wysocki/publications/ ConderWysocki.pdf, last access on Sept. 02, 2005
5 V. Pammer, Y. Delignon, W. Sawaya and D. Boulinguez, 'A Low Complexity Suboptimal MIMO Receiver: The Combined ZF-MLD Algortihm', 14th IEEE 2003 International Symposium on Personal, Indoor and Mobile Communication, pp. 2271-2275
6 Won-Joon Choi, Rohit Negi and John M. Cioffi, 'Combined ML and DFE Decoding for the V-BLAST Systems', Communications, 2000. ICC 2000. 2000 IEEE International Conference on Volume 3, 18-22 June 2000 Page(s):1243-1248 vol.3
7 P.W. Wolniansky, G.J. Foschini, G.D. Golden and R.A. Valenzuela, 'VBLAST: An Architecture for Realizing Very High Data Rates Over the Rich-Scattering Wireless Channel', Signals, Systems, and Electronics, 1998. ISSSE 98. 1998 URSI International Symposium on 29 Sept.-2 Oct. 1998 Page(s):295-300
8 Dirk Wubben, Ronald Bohnke, Volker Kuhn and Karl-Dirk Kammeyer, 'MMSE Extension of V-BLAST based on Sorted QR Decompotion', Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th Volume 1,6-9 Oct. 2003 Page(s): 508-512 Vol.1