Space-time-frequency multiuser detection over fast-fading multipath channels for synchronous DS-CDMA systems

Date

2001-05-09

Author

Ertug, O
Baykal, Buyurman

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

7
views

0
downloads

Cite This

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 spacetime-frequency multiuser detectors base on decorrelating and MMSE interference supression 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.

Subject Keywords

Wireless

URI

https://hdl.handle.net/11511/55176

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar