Distributed power and resource allocation for weighted sum energy-efficiency maximization in OFDMA smallcell network

In this paper, we investigate the problem of maximizing the weighted sum energy efficiency (WS-EE) in downlink OFDMA smallcell network. To solve the problem in a distributed manner and reduce the complexity, we decompose the resource blocks (RBs) allocation and the power control into two subproblems. For the subproblem of RBs allocation, the optimal RBs allocation strategy is obtained based on rate maximization given any feasible network power profile. For the subproblem of power control, a novel distributed pricing based algorithm is developed with limited inter-smallcell coordination. Specifically, each smallcell base station (SBS) updates its current interference information and broadcasts it to the other SBSs. With this collected information, the optimal power control strategy of each SBS is derived. Simulation results show that the proposed algorithm outperforms the existing algorithms in terms of the WS-EE.

[1]  Daniel Pérez Palomar,et al.  Power Control By Geometric Programming , 2007, IEEE Transactions on Wireless Communications.

[2]  Mehul Motani,et al.  Price-Based Resource Allocation for Spectrum-Sharing Femtocell Networks: A Stackelberg Game Approach , 2012, 2011 IEEE Global Telecommunications Conference - GLOBECOM 2011.

[3]  Geoffrey Ye Li,et al.  Fundamental trade-offs on green wireless networks , 2011, IEEE Communications Magazine.

[4]  Luca Sanguinetti,et al.  Energy-Efficient Power Control: A Look at 5G Wireless Technologies , 2015, IEEE Transactions on Signal Processing.

[5]  H. Vincent Poor,et al.  Energy Efficient Communications in CDMA Networks: A Game Theoretic Analysis Considering Operating Costs , 2006, IEEE Transactions on Signal Processing.

[6]  Ming Chen,et al.  Distributed Energy-Efficient Power Optimization for CoMP Systems With Max-Min Fairness , 2014, IEEE Communications Letters.

[7]  Ming Chen,et al.  Pricing-based distributed power control for weighted sum energy-efficiency maximization in ad hoc networks , 2014, 2014 IEEE Global Communications Conference.

[8]  Hui Liu,et al.  Energy-efficient resource optimization in spectrum sharing two-tier femtocell networks , 2013, 2013 IEEE International Conference on Communications Workshops (ICC).

[9]  Rose Qingyang Hu,et al.  An energy efficient and spectrum efficient wireless heterogeneous network framework for 5G systems , 2014, IEEE Communications Magazine.

[10]  Nan Liu,et al.  Energy Efficiency Optimization for MIMO Distributed Antenna Systems , 2017, IEEE Transactions on Vehicular Technology.

[11]  Xiaohui Zhang,et al.  Energy efficiency optimization for MIMO cognitive radio network , 2015, 2015 IEEE International Conference on Communications (ICC).

[12]  Jeffrey G. Andrews,et al.  What Will 5G Be? , 2014, IEEE Journal on Selected Areas in Communications.

[13]  Geoffrey Ye Li,et al.  Distributed Interference-Aware Energy-Efficient Power Optimization , 2011, IEEE Transactions on Wireless Communications.

[14]  Ying-Chang Liang,et al.  Distributed Power Control for Spectrum-Sharing Femtocell Networks Using Stackelberg Game , 2011, 2011 IEEE International Conference on Communications (ICC).

[15]  Luca Venturino,et al.  Energy-Efficient Scheduling and Power Allocation in Downlink OFDMA Networks With Base Station Coordination , 2014, IEEE Transactions on Wireless Communications.