Research Article
On Using Channel Prediction in Adaptive Beamforming Systems
@INPROCEEDINGS{10.1109/COMSWA.2007.382451, author={T.R. Ramya and Srikrishna Bhashyam}, title={On Using Channel Prediction in Adaptive Beamforming Systems}, proceedings={1st International IEEE Workshop on WIreless Systems: Advanced Research and Development}, publisher={IEEE}, proceedings_a={WISARD}, year={2007}, month={7}, keywords={Adaptive transmission channel prediction outage probability transmit beamforming}, doi={10.1109/COMSWA.2007.382451} }- T.R. Ramya
Srikrishna Bhashyam
Year: 2007
On Using Channel Prediction in Adaptive Beamforming Systems
WISARD
IEEE
DOI: 10.1109/COMSWA.2007.382451
Abstract
Adaptive transmission schemes based on channel state information at the transmitter have the potential to significantly improve the performance of a wireless system by matching the transmitted signal to the time varying wireless channel conditions. However, channel estimation errors and feedback delay can limit the performance gain. In this paper, the performance gain that can be obtained using channel prediction in an adaptive beamforming system with channel estimation error and feedback delay is evaluated. Channel prediction is shown to improve outage performance significantly by reducing the effect of feedback delay. Results also show that, for a given target outage performance, channel prediction allows the system to operate at much larger channel Doppler spread.