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Volume 26 Issue 4
Apr.  2004
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Wang Bing, Zhao Yu-ping, Zou Li, Liang Qing-lin. Fast PDA Multiuser-Detection Algorithm in SDMA System[J]. Journal of Electronics & Information Technology, 2004, 26(4): 505-510.
Citation: Wang Bing, Zhao Yu-ping, Zou Li, Liang Qing-lin. Fast PDA Multiuser-Detection Algorithm in SDMA System[J]. Journal of Electronics & Information Technology, 2004, 26(4): 505-510.

Fast PDA Multiuser-Detection Algorithm in SDMA System

  • Received Date: 2002-10-07
  • Rev Recd Date: 2003-05-02
  • Publish Date: 2004-04-19
  • Compared with optimal maximum-likelihood multiuser detection algorithm (MUD) in Space Division Multiuser Access (SDMA) system, probabilistic data association (PDA) algorithm is a near-optimal MUD with low complexity. This paper analyzes the relation between error judging and estimated likely-probability in the 1st iteration of PDA, then proposed the fast PDA which correcting the judging output in the 1st iteration of PDA with Euclidean distance factor. Fast PDA reduces complexity of PDA through eliminating its iterations. Simulation results show that BER of fast PDA is very close to PDA with iterations.
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  • Foschini J G, Gans M J. On limits of wireless communications in a fading environment when using multiple antennas[J].Wireless Personal Communications.1998, 6(3):311-335[2]Verdu S. Multiuser Detection. Cambridge, UK: Cambridge University Press, 1998, 第四章.[3]X. Wang, Poor H V. Iterative (Turbo) soft interference cancellation and decoding for coded CDMA. IEEE Trans. on Communications, 1999, 47(7): 1046-1061.[4]Reynolds D, X. Wang. Turbo multiuser detection with unknown interferers. IEEE Trans. on Communications, 2002, 50(4): 616-622.[5]J. Luo, Pattipati K R, Willett P K, Hasegawa F. Near-optimal multiuser detection in synchronous CDMA using probabilistic data association. Electronics Letters, 2001, 5(9): 361-363.[6]陈江.衰落信道中的空分多址系统.[博士论文],北京:北京大学电子学系,2002-9-9.
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