Multiple access interference resistant channel acquisition for wideband CDMA signals

Vinayak Tripathi, Ashok Mantravadi, Venugopal V. Veeravalli

Research output: Contribution to journalConference articlepeer-review


The problem of acquiring the channel parameters of a new user on the reverse link is considered for a wideband CDMA signal received in a frequency selective fading environment with multi-access interference. Following a minimum mean squared error (MMSE) strategy for suppressing the multi-access interference, the parameter estimation problem is posed in a maximum-likelihood framework. To reduce complexity, the solution is implemented in two stages: first the estimated tap delays are restricted to be at chip spacings, and then the number of taps is reduced by allowing for arbitrary spacing between them. The performance of the proposed techniques is studied through numerical simulations.

Original languageEnglish (US)
Pages (from-to)956-960
Number of pages5
JournalIEEE Vehicular Technology Conference
StatePublished - 2000
Externally publishedYes
EventVTC2000: 51st Vehicular Technology Conference 'Shaping History Through Mobile Technologies' - Tokyo, Jpn
Duration: May 15 2000May 18 2000

ASJC Scopus subject areas

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


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