By Topic

Orthogonalization techniques for single group multicasting in cooperative amplify-and-forward networks

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
A. Abdelkader ; Darmstadt University of Technology, D-64283, Germany ; M. Pesavento ; A. B. Gershman

We consider the problem of distributed beamforming in amplify-and-forward (AF) relay networks for single-group multicasting, where a single transmitter sends common information symbols to a group of users via cooperating relays. The objective is to design a computationally efficient beamforming scheme to minimize the total transmitted power at the relays subject to quality-of-service (QoS) constraints of all users. We extend the simple orthogonalization techniques, originally developed in the context of conventional broadcasting systems with instantaneous channel state information (CSI) to solve the present problem in the case when second-order statistics of the channel are available. Simulation results show that our technique outperforms the popular SDR-based technique and provides an excellent performance to complexity trade-off over a large range of QoS constraint thresholds.

Published in:

Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP), 2011 4th IEEE International Workshop on

Date of Conference:

13-16 Dec. 2011