Referenced Items are not available for this document.
RAKE receivers suffer degradation in performance under fast fading due to errors in channel state estimation. The wide-sense stationary uncorrelated scatterer channel model lends itself to time-frequency canonical representation, and provides additional diversity in the frequency axis. Using the joint spatial-multipath-Doppler diversity model based on this canonical representation with multiple antennas, we first develop linear space-time-frequency multiuser detectors based on decorrelating and MMSE interference suppression techniques and further present nonlinear space-time-frequency decision-driven multiuser detectors based on interference cancellation ideas to operate over the fast-fading multipath synchronous CDMA channels. Simulation results based on realistic fast-fading assumptions demonstrate that the nonlinear detectors present improved bit-error-rate performance over the linear detectors and all proposed detectors exhibit significant resistance to the near-far effect
Published in:
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
(Volume:2
)
Date of Conference: 2001
- Page(s):
- 1503 - 1507 vol.2
- Meeting Date :
- 06 May 2001-09 May 2001
- ISSN :
- 1090-3038
- Print ISBN:
- 0-7803-6728-6
- INSPEC Accession Number:
- 7174531
- Conference Location :
- Rhodes
- Digital Object Identifier :
- 10.1109/VETECS.2001.944638
- Product Type:
- Conference Publications
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