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Communication over Multipath Fading Channels: A Time-Frequency Perspective

  • Akbar M. Sayeed
  • Behnaam Aazhang
Chapter

Abstract

Dynamics of multipath fading have a major effect on the performance of mobile wireless communication systems. The inherently time-varying nature of the mobile wireless channel makes nonstationary signal processing techniques particularly attractive for system design. Time-frequency representations are powerful tools for time-varying signal processing, and in this paper, we present a time-frequency view of wireless communication over multipath channels. Our discussion is anchored on a fundamental finite-dimensional time-frequency representation of the wireless channel that facilitates diversity signaling by exploiting multipath and Doppler shifts. The substantially higher level of diversity afforded by time-frequency processing over conventional techniques translates into significant gains in virtually all aspects of system performance. We illustrate the utility of the time-frequency framework via novel signaling and receiver structures, and multiuser acquisition and interference-suppression algorithms.

Keywords

Receiver Structure Multiuser Detection Multipath Channel Channel Coefficient CDMA System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1997

Authors and Affiliations

  • Akbar M. Sayeed
  • Behnaam Aazhang

There are no affiliations available

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