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Volume 29 Issue 1
Jan.  2011
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Xiao Hai-yong, Bi Guang-guo, Jin Xiu-feng. Combined LSD and DFE Detection for V-BLAST[J]. Journal of Electronics & Information Technology, 2007, 29(1): 143-147. doi: 10.3724/SP.J.1146.2005.00571
Citation: Xiao Hai-yong, Bi Guang-guo, Jin Xiu-feng. Combined LSD and DFE Detection for V-BLAST[J]. Journal of Electronics & Information Technology, 2007, 29(1): 143-147. doi: 10.3724/SP.J.1146.2005.00571

Combined LSD and DFE Detection for V-BLAST

doi: 10.3724/SP.J.1146.2005.00571
  • Received Date: 2005-05-23
  • Rev Recd Date: 2005-10-08
  • Publish Date: 2007-01-19
  • BLAST can effectively increase information rate in multi-antenna system. The simplest space multiplex method is V-BLAST, which has simple detection algorithm such as ZF-DFE, MMSE-DFE, ML and ML-DFE etc. This paper discussed methods to improve the ML-DFE algorithm, proposed combined LSD and DFE detection algorithm based on ZF and MMSE criteria. Simulation results show that large performance improvement can be obtained when the LSD algorithm output only 3 detection results, and the algorithm based on MMSE criteria has better performance than based on ZF criteria.
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  • [1] Wolniansky P W, Foschini G J, and Golden G D, et al.. V-BLAST: An architecture for realizing very high data rates over the rich-scattering wireless channel[J].IEEE ISSSE98. Pisa, Italy, Sept.1998, 1:295-300 [2] Hassibi B. An efficient square-root algorithm for BLAST. in Proc. IEEE Intl. Conf. Acoustic, Speech, Signal Processing, Istanbul, Turkey, June 2000: 5-9. [3] Hochwald B M and ten Brink S. Achieving near-capacity on a multiple-antenna channel[J].IEEE Trans. Comm.2003, 51(3):389-399 [4] Foschini G J, Golden G D, and Valenzuela R A, et al.. Simplified processing for high spectral efficiency wireless communication employing multi-element arrays. IEEE J.SAC, 1999, 17(11): 1841-1852. [5] Choi W, Negi R, and Cioffi J M. Combined ML and DFE decoding for the V-BLAST system. in Proc. ICC 2000, New Orleans, LA, 2000: 1243-1248. [6] Golub G H and Van Loan C F. Matrix Computations, 3rd ed., Baltimore and London: The Johns Hopkins University Press. 1996, chapter 5. [7] Hassibi B and Vikalo H. On the expected complexity of sphere decoding. in Proc. Signals, Systems and Computers, Pacific Grove, CA, 2001: 1051-1055.
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