Finger replacement method for rake receivers in the soft handover region

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We propose and analyze a new finger replacement technique that is applicable for RAKE receivers in the soft handover (SHO) region. More specifically, the receiver uses in the SHO region by default the strongest paths from the serving base station (BS) and only when the combined signal-to-noise ratio falls below a certain pre-determined threshold, the receiver uses more resolvable paths from the target BS to improve the performance. Instead of changing the configuration for all fingers, the receiver just compares the sum of the weakest paths out of the currently connected paths from the serving BS with the sum of the strongest paths from the target BS and selects the better group. Using accurate statistical analysis, we investigate in this letter the tradeoff between error performance, average number of required path comparisons, and SHO overhead offered by this newly proposed scheme.

Original languageEnglish (US)
Article number4489738
Pages (from-to)1152-1156
Number of pages5
JournalIEEE Transactions on Wireless Communications
Volume7
Issue number4
DOIs
StatePublished - Apr 1 2008

Keywords

  • Diversity techniques
  • Fading channels
  • Handover
  • Performance analysis
  • RAKE receivers

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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