By Topic

Downlink Precoder Design for Coordinated Regenerative Multi-User Relaying

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

4 Author(s)
Jarkko Kaleva ; Centre for Wireless Communications, University of Oulu, Oulu, Finland ; Antti Tolli ; Ganesh Venkatraman ; Markku Juntti

Relays are used in the current wireless standards to enhance the cell throughput and coverage. In this paper, we evaluate the system performance by considering the duplexing loss with over-the-air transmission for relay with decode-and-forward as the relaying protocol. The overhead involved in providing the relay with the data prior to the transmission is often neglected. We demonstrate that the impact of relays can be even detrimental if the in-band signaling needs are not properly accounted for. Both precoder design and user allocation between the base station and the relay are considered. The precoder design objectives are transmit power minimization and throughput maximization each of which two different precoding approaches are considered. Zero-forcing precoder design is proposed to achieve reduced computation complexity and low signaling overhead. For higher efficiency and performance, we provide coordinated solutions, which allow more flexible interference control. We also consider user allocation by providing heuristic allocation methods.

Published in:

IEEE Transactions on Signal Processing  (Volume:61 ,  Issue: 5 )