Energy-efficient Optimization Based User Schedule and Resource Allocation Algorithm
Hu Ying①② Huang Yong-ming①③ Yu Fei①③ Yang Lu-xi①③
①(School of Information Science and Engineering, Southeast University, Nanjing 210096, China) ②(Institute of Electronics and Information, Jiangsu University of Science and Technology, Zhenjiang 212003, China) ③(Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education, Southeast University, Nanjing 210096, China)
Abstract：An algorithm is proposed for energy-efficient user scheduling and resource allocation scheme in multi- user OFDMA mobile communication downlink system. A mathematical formulation of optimization issue is provided with the objective of maximizing system energy-efficient under QoS constraint. The proposed method can use system diversity to implement user selection and rate allocation with perfect Channel State Information (CSI) at the base station, it also enhanced the usage of energy effectively. Simulation results demonstrate that the performance of proposed algorithm is close to the optimum, it also has low complexity.
2012, Vol. 34 
