Canonical Multipath-Doppler Coordinates in Wireless Communications (1998)
| Venue: | in Proceedings of the 36th Annual Allerton Conference on Communications, Control and Computing |
| Citations: | 5 - 4 self |
BibTeX
@INPROCEEDINGS{Sayeed98canonicalmultipath-doppler,
author = {Akbar M. Sayeed},
title = {Canonical Multipath-Doppler Coordinates in Wireless Communications},
booktitle = {in Proceedings of the 36th Annual Allerton Conference on Communications, Control and Computing},
year = {1998},
pages = {536--545}
}
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Abstract
Code division multiple access (CDMA) has emerged as a dominant technology for meeting the physical layer challenges of future wireless communication systems. Signal processing requirements in the physical layer are dictated by three major factors: multiaccess interference, multipath dispersion and fading, and transceiver complexity. Existing CDMA system designs reflect a piecemeal approach due to the lack of an effective framework for jointly addressing these issues. We propose signal processing in canonical multipath-Doppler coordinates for attacking physical layer impairments in an integrated fashion. The canonical coordinates are derived from a fundamental characterization of channel propagation dynamics in terms of discrete multipath-delayed and Doppler-shifted copies of the spread-spectrum signaling waveforms. The multipath-Doppler shifted waveforms constitute an approximately orthogonal basis and the corresponding signal representation naturally connects the various c...
