Channel estimation scheme for a RAKE receiver with fractional sampling in IEEE802.11b WLAN system

Yu Imaoka, Hiroshi Obata, Yohei Suzuki, Yukitoshi Sanada

Research output: Contribution to journalArticlepeer-review

Abstract

The IEEE802.11b WLAN standard employs directsequence/spread-spectrum (DS/SS) modulation. With a fractional sampling RAKE receiver, it is possible to achieve diversity and reduce the BER in DS/SS communication. In order to realize the diversity through fractional sampling, the impulse response of the channel must be estimated. In this paper, a channel estimation scheme for a RAKE receiver with fractional sampling in IEEE802.11b WLAN system is investigated through a computer simulation and an experiment. In order to estimate the impulse response of the channel, a pseudo-inverse matrix with a threshold is employed. Numerical results indicate that the channel can be estimated with an optimum threshold in both the simulation and the experiment.

Original languageEnglish
Pages (from-to)946-953
Number of pages8
JournalIEICE Transactions on Communications
VolumeE92-B
Issue number3
DOIs
Publication statusPublished - 2009 Mar

Keywords

  • Channel estimation
  • DS/SS
  • Fractional sampling
  • IEEE802.11b
  • Pseudo-inverse matrix

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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