Random Beamforming in Spatially Correlated Multiuser MISO Channels

In this paper, we propose a new beamforming scheme that generates beams by exploiting the spatial correlation in multiuser environments. The proposed scheme generates random beams using eigenvectors corresponding to dominant eigenvalues of the channel covariance matrix, increasing the multiuser dive...

Full description

Saved in:
Bibliographic Details
Main Authors: Jae-Yun Ko, Yong-Hwan Lee
Format: Conference Proceeding
Language:English
Subjects:
Array signal processing
Correlation
Covariance matrix
Eigenvalues and eigenfunctions
Gain
Random variables
Signal to noise ratio
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, we propose a new beamforming scheme that generates beams by exploiting the spatial correlation in multiuser environments. The proposed scheme generates random beams using eigenvectors corresponding to dominant eigenvalues of the channel covariance matrix, increasing the multiuser diversity gain. Moreover, it can obtain an additional SNR gain by transmitting the signal with a beam weight coherent to the effective channel corresponding to dominant eigenvectors of the channel covariance matrix of a selected user. Simulation results show that the proposed scheme is quite effective in correlated channel environments.
ISSN:1090-3038
2577-2465
DOI:10.1109/VETECF.2008.90