Power control for multipoint cooperative communication with high-to-low sinr scenario
1 State Key Laboratory of Networking and Switching Technology (Beijing University of Posts and Telecommunications), Beijing, China
2 Wireless Communication Lab, College of Information Technical Science, Nankai University, 94 Weijin Road, Nankai District, Tianjin, China
3 School of Physics and Electronics Engineering, Shanxi University, Taiyuan, Shanxi, China
EURASIP Journal on Wireless Communications and Networking 2012, 2012:276 doi:10.1186/1687-1499-2012-276Published: 30 August 2012
In order to solve the power control problem for multipoint cooperative communication with high-to-low SINR scenario, the cooperative SINR receiving model is established. Moreover, considering its non-convex property, a novel power control algorithm is proposed, which is based on the geometric programming and a series of convex approximations are taken to achieve the global optimization in high-to-low SINR scenario. The numerical results show the power of cellular users can be brought into a global optimization range whether users in high-SINR area or low-SINR area compared with the existing algorithm, also the CDF of users’ SINR is optimized, and its SINR coverage distribution could be balanced in varying degrees, which improve the fairness and mitigate the inter-cell interference effectively.