Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2008, Vol. 31 ›› Issue (2): 104-107.doi: 10.13190/jbupt.200802.104.100

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Decorrelating Decision-Feedback Multiuser Detector
on the Decision Arrangement

ZHANG Dong-hong1,2 , LIAO Gui-sheng1   

  1. 1. Key Laboratory for Radar Signal Processing, Xidian University, Xi’an 710071,China; 2. Department of Applied Mathematics, Ankang University, An’kang 725000,China
  • Received:2007-04-05 Revised:1900-01-01 Online:2008-04-28 Published:2008-04-28
  • Contact: ZHANG Dong-hong

Abstract:

An iterative formula of the amplitude estimate is presented based on Cholesky decomposition for the signal power order. The decision arrangement in the order of decreasing amplitude is implemented by permutation matrix in decorrelating decision-feedback multiuser detector, it will make the strongest user get a very first decision. Performance analysis shows that the decision arrangement can improve the bit error rate (BER) performance of the detector. The simulation results accord with theoretical prediction which summarizes that the decision arrangement will enhance the BER performance of the weaker user and equalize that of the whole system.

Key words: amplitude estimate, decorrelating decision-feedback detector, decision arrangement, bit error rate

CLC Number: