On distributed power control in full duplex wireless networks

• Main Authors: Yu Wang, Shiwen Mao
• Format: Article
• Language: English
• Published: KeAi Communications Co., Ltd. 2017-02-01
• Series: Digital Communications and Networks
• Subjects: Dual decomposition; Distributed algorithm; Full duplex transmission; Power control
• Online Access: http://www.sciencedirect.com/science/article/pii/S2352864816300529

In this paper, we first consider the problem of distributed power control in a Full Duplex (FD) wireless network consisting of multiple pairs of nodes, within which each node needs to communicate with its corresponding node. We aim to find the optimal transmition power for the FD transmitters such that the network-wide capacity is maximized. Based on the high Signal-to-Interference-Plus-Noise Ratio (SINR) approximation and a more general approximation method for logarithm functions, we develop effective distributed power control algorithms with the dual decomposition approach. We also extend the work to the general FD network scenario, which can be decomposed into subproblems of isolated nodes, paths, and cycles. The corresponding power control problem is then be solved with the distributed algorithm. The proposed algorithms are validated with simulation studies.