Blind adaptive joint suppression of MAI and ISI in dispersive CDMA channels

H. Vincent Poor, Xiaodong Wang

Research output: Contribution to journalConference articlepeer-review

4 Scopus citations


The problem of blind adaptive suppression of both multiple-access interference (MAI) and intersymbol interferenee (ISI) in a high-rate dispersive CDMA network is considered. The dispersive CDMA channel is first cast within a multiple-input multiple-output (MIMO) model. It is then shown that the linear MMSE receiver can be expressed in terms of the signal subspace components of an augmented received signal, the desired user's signature waveform and its channel response. The signal subspace components can be adaptively estimated using subspace tracking techniques. Moreover, it is shown that the desired user's dispersive channel can also be estimated using a constrained adaptive filtering method. The proposed adaptive receiver employs a subspace tracker and a channel estimator, and forms the linear MMSE detector in closed-form based on the estimated subspace components and the channel response.

Original languageEnglish (US)
Pages (from-to)1013-1017
Number of pages5
JournalConference Record of the Asilomar Conference on Signals, Systems and Computers
StatePublished - 1998
EventProceedings of the 1997 31st Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2) - Pacific Grove, CA, USA
Duration: Nov 2 1997Nov 5 1997

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Networks and Communications


Dive into the research topics of 'Blind adaptive joint suppression of MAI and ISI in dispersive CDMA channels'. Together they form a unique fingerprint.

Cite this