Sparse beamforming in peer-to-peer relay networks
- https://doi.org/10.2991/icmmita-15.2015.77How to use a DOI?
- Relay network; beamforming; transmit power; semidefinite relaxation; SINR.
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.
- © 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/).
Cite this article
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 - https://doi.org/10.2991/icmmita-15.2015.77 ID - Hou2015/11 ER -