Subspace-based blind adaptive joint interference suppression and channel estimation in multipath CDMA channels

Xiaodong Wang, H. Vincent Poor

Research output: Contribution to conferencePaper

3 Scopus citations

Abstract

A blind adaptive technique for demodulating a user's signal in the multipath CDMA channel is proposed. This technique is based on signal subspace estimation. The receiver employs a linear filter-bank at the front end to mitigate the multiple-access interference and the multipath interference. A channel estimator is used to estimate the channel state for diversity combing. It is shown that, based on the signal subspace estimation, both the decorrelating filter-bank and the linear MMSE filter-bank can be obtained blindly, i.e., they can be estimated from the received data with the prior knowledge of only the signature waveform of the user of interest. A blind adaptive implementation based on a signal subspace tracking algorithm is developed. A blind adaptive technique for estimating the channel state is also developed, which produces the post-combining decision statistic as a by-product.

Original languageEnglish (US)
Pages460-464
Number of pages5
StatePublished - Dec 1 1997
EventProceedings of the 1997 IEEE 6th International Conference on Universal Personal Communications, ICUPC'97. Part 1 (of 2) - San Diego, CA, USA
Duration: Oct 12 1997Oct 16 1997

Other

OtherProceedings of the 1997 IEEE 6th International Conference on Universal Personal Communications, ICUPC'97. Part 1 (of 2)
CitySan Diego, CA, USA
Period10/12/9710/16/97

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture

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    Wang, X., & Poor, H. V. (1997). Subspace-based blind adaptive joint interference suppression and channel estimation in multipath CDMA channels. 460-464. Paper presented at Proceedings of the 1997 IEEE 6th International Conference on Universal Personal Communications, ICUPC'97. Part 1 (of 2), San Diego, CA, USA, .