Code-only dependent asynchronous CDMA receivers for MUI elimination and mitigation of unknown multipath

Anna Scaglione, Georgios B. Giannakis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

The use of CDMA communication systems over frequency selective channels requires channel estimation or complex receiver structures to mitigate multi-user interference (MUI). Different classes of codes such as Gold codes or wavelet packets have been adopted. But recently new codes, called Lagrange codes, have been designed which include OFDM and multi-carrier transmissions as special cases. With simple linear (so called Vandermonde) receivers, Lagrange codes offer complete MUI cancellation independent of the channels' impulse responses, by converting the effect of frequency selective channels into flat fading. In this work we analyze the performance of CDMA-Lagrange transmitters and Vandermonde receivers, when each user transmits differentially encoded binary symbols. With differential demodulation at the receiver, we circumvent residual flat fading effects, while deep channel fades are handled via a root hopping technique.

Original languageEnglish (US)
Title of host publicationConference Record of the Asilomar Conference on Signals, Systems and Computers
EditorsM.P. Farques, R.D. Hippenstiel
PublisherIEEE Comp Soc
Pages950-954
Number of pages5
Volume1
StatePublished - 1998
Externally publishedYes
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

Other

OtherProceedings of the 1997 31st Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2)
CityPacific Grove, CA, USA
Period11/2/9711/5/97

ASJC Scopus subject areas

  • Hardware and Architecture
  • Signal Processing
  • Electrical and Electronic Engineering

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  • Cite this

    Scaglione, A., & Giannakis, G. B. (1998). Code-only dependent asynchronous CDMA receivers for MUI elimination and mitigation of unknown multipath. In M. P. Farques, & R. D. Hippenstiel (Eds.), Conference Record of the Asilomar Conference on Signals, Systems and Computers (Vol. 1, pp. 950-954). IEEE Comp Soc.