A Modified Levenberg-Marquardt Method for the Bidirectional Relay Channel

Authors

G. Dartmann, E. Zandi, G. Ascheid,

Abstract

        This paper presents an optimization approach for a system consisting of multiple bidirectional links over a two-way amplify-and-forward relay. Improvement to the fairness of the system is desired. All user pairs exchange information over one relay station (RS) with multiple antennas. Due to the joint transmission to all users, the users are subject to mutual interference. A mitigation of the interference can be achieved by max–min fair precoding optimization where the relay is subject to a sum power constraint. The resulting optimization problem is nonconvex. This paper proposes a novel iterative low-complexity approach based on a modified Levenberg–Marquardt (LM) method to find near optimal solutions. The presented method finds solutions close to the standard convex solver-based relaxation approach.

BibTEX Reference Entry 

@article{DaZaAs14,
	author = {Guido Dartmann and Ehsan Zandi and Gerd Ascheid},
	title = "A Modified Levenberg-Marquardt Method for the Bidirectional Relay Channel",
	pages = "4096-4101",
	journal = "Vehicular Technology, {IEEE} Transactions on",
	volume = "63",
	number = "8",
	doi = 10.1109/TVT.2014.2306204,
	month = Oct,
	year = 2014,
	hsb = hsb999910367568,
	}

Downloads

 Download paper  Download bibtex-file

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights there in are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.