Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2006, Vol. 29 ›› Issue (2): 98-101.doi: 10.13190/jbupt.200602.98.129

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Optimal Path Selection and Algorithm for S-Rake in Dense Multipath Channels

WANG De-qiang, LIU Dan-pu, YUE Guang-xin   

  1. School of Telecommunication Engineering, Beijing University of Posts and Telecommunications
  • Online:2006-04-28 Published:2006-04-28

Abstract: The path selection issue for S-Rake (selective Rake) in quasi-static dense multipath channels with inter-path interference is investigated. The bit error probability is taken as the objective cost function. After some theoretic derivation, the path selection issue is converted into a constrained optimization problem conditioned on the number of path employed in S-Rake. The optimal path selection criterion is presented and a suboptimal algorithm is proposed. The numerical simulations indicate that, in quasi-static dense multi-path channels with inter-path interference, the proposed path selection algorithm outperforms the conventional algorithm based on instantaneous signal to noise ratio ordering.

Key words: selective Rake, dense multipath channel, ultra-wideband