Sparse beamforming in peer-to-peer relay networks

DOI

10.2991/icmmita-15.2015.77How to use a DOI?

Keywords

Relay network; beamforming; transmit power; semidefinite relaxation; SINR.

Abstract

To reduce active relays in peer-to-peer relay networks, a sparsity promoting penalty term is introduced into the objective function to obtain beamforming weights through minimization of the total relay transmit power while the signal-to-interference-plus-noise ratio (SINR) at the destinations are guaranteed to be above certain thresholds. To deal with the non-convexity of the problem, we use semidefinite relaxation to turn this problem into a semidefinite programming (SDP) problem. Then we can efficiently solve the SDP problem using interior point method based software tools. Simulation results show that the proposed method can efficiently conduct relay selection with a mild increase in minimum total transmit power of the relays compared with the traditional full cooperative relay network.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yunshan Hou
AU  - Zhijuan Qi
AU  - Jianhua Chen
PY  - 2015/11
DA  - 2015/11
TI  - Sparse beamforming in peer-to-peer relay networks
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 396
EP  - 401
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.77
DO  - 10.2991/icmmita-15.2015.77
ID  - Hou2015/11
ER  -