Energy Efficient Power Allocation for Heterogeneous Cloud Radio Access Network with Partial CSI
Abstract— In this paper, we consider power allocation for heterogeneous cloud radio access network (HCRAN). All the channels in HC-RAN are assumed to be block fading and only the statistical information of these channels can be acquired by the based band unit (BBU) instead of perfect channel state information (CSI). The power of the users is optimized via maximization of the averaged energy efficiency (EE) of HCRAN, under outage probability constraints and average transmit power constraint. First, the original nonconvex optimization problem is transformed into an equivalent optimization problem in subtractive form. Then, an efficient two loop iterative power allocation scheme is proposed. Simulation results demonstrate the improvements in terms of EE by using the proposed power allocation scheme compared with the traditional ergodic rate maximization algorithm.
Index Terms— power allocation, energy efficient, heterogeneous cloud radio access network, fractional programming.
College of Internet of Things, Nanjing University of Posts and Telecommunications, CHINA
College of Automation, Nanjing University of Aeronautics and Astronautics, CHINA
Cite: Jiakuo Zuo, Chao Zuo, "Energy Efficient Power Allocation for Heterogeneous Cloud Radio Access Network with Partial CSI," Proceedings of 2018 the 8th International Workshop on Computer Science and Engineering, pp. 461-469, Bangkok, 28-30 June, 2018.