Joint Power Allocation and Mode Selection for D2D Communications with Imperfect CSI  

作　　者：MA Bei ZHANG Hailin ZHANG Zhaowei 

机构地区：[1]Broadband Wireless Communications Laboratory,Information Science Institute,State Key Laboratory of Integrated Service Networks,Xidian University

出　　处：《China Communications》2015年第7期73-81,共9页中国通信（英文版）

基　　金：supported in part by Important National Science and Technology Specific Projects (Grants Nos. 2011 ZX 0300300104, 2012ZX03003012);Fundamental Research Funds for Central Universities (Grant Nos. 72125377)

摘　　要：Device-to-device(D2D) communications can be underlaid with a cellular infrastructure to increase resource utilization, improve user throughput and save battery energy. In such networks, power allocation and mode selection are crucial problems. To address the joint optimization of power and mode selection under imperfect CSI, we propose an optimal, energy-aware joint power allocation and mode selection(JPAMS) scheme. First, we derive the closed-form solution for the power minimization for both D2 D and cellular links while satisfying different quality of service(Qo S) constraints. Second, we address the mode selection problem in presence of imperfect CSI, based on the derived power allocation. Moreover, the theoretical analysis and simulation results are presented to evaluate the proposed scheme for the D2 D communications.Device-to-device（D2D） communications can be underlaid with a cellular infrastructure to increase resource utilization, improve user throughput and save battery energy. In such networks, power allocation and mode selection are crucial problems. To address the joint optimization of power and mode selection under imperfect CSI, we propose an optimal, energy-aware joint power allocation and mode selection（JPAMS） scheme. First, we derive the closed-form solution for the power minimization for both D2 D and cellular links while satisfying different quality of service（Qo S） constraints. Second, we address the mode selection problem in presence of imperfect CSI, based on the derived power allocation. Moreover, the theoretical analysis and simulation results are presented to evaluate the proposed scheme for the D2 D communications.

关 键 词：power allocation mode selection D2D communications imperfect CSI ENERGY-AWARE 

分 类 号：TN929.5[电子电信—通信与信息系统]