Finger assignment schemes for RAKE receivers with multi-way soft handover

Seyeong Choi*, Mohamed Slim Alouini, Khalid A. Qaraqe, Hong Chuan Yang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

We propose and analyze new finger assignment techniques that are applicable for RAKE receivers in the soft handover (SHO) region. More specifically, in the SHO region, the receiver uses by default only the strongest paths from the serving base station (BS) and only when the combined signal-to-noise ratio (SNR) falls below a certain pre-determined threshold, the receiver uses more resolvable paths from the target BSs to improve the performance. Relying on the previous results for the case of two-BS case, we consider the multi-BS situation by attacking the statistics of several correlated generalized selection combining (GSC) stages and provide closed-form expressions for the statistics of the output SNR. By investigating the tradeoff among the error performance, the path estimation load, and the SHO overhead, we show through numerical examples that the new schemes offer commensurate performance in comparison with more complicated GSC-based diversity systems while requiring a smaller estimation load and SHO overhead.

Original languageEnglish (US)
Title of host publication2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Pages474-478
Number of pages5
DOIs
StatePublished - 2007
Event2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 - Kowloon, China
Duration: Mar 11 2007Mar 15 2007

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Other

Other2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
CountryChina
CityKowloon
Period03/11/0703/15/07

Keywords

  • Diversity techniques
  • Fading channels
  • Generalized selection combining (GSC)
  • Performance analysis
  • RAKE receiver

ASJC Scopus subject areas

  • Engineering(all)

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