Research on Downlink Energy Efficiency of Multi-Cell Massive Distributed Antenna System

doi:10.13190/j.jbupt.2018-021

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2018, Vol. 41 ›› Issue (6): 26-33.doi: 10.13190/j.jbupt.2018-021

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Research on Downlink Energy Efficiency of Multi-Cell Massive Distributed Antenna System

LI Min-zheng^1,2,3, LI Yan-feng²

1. School of Computer Science and Information Security, Guilin University of Electronic Technology, Guangxi Guilin 541004, China;
2. School of Electronic Information Engineering, Shanghai Dianji University, Shanghai 201306, China;
3. Guangxi Information Science Research Centre, Guangxi Guilin 541004, China

Received:2018-01-17 Online:2018-12-28 Published:2018-12-24

Abstract

Abstract: In multi-cell massive distributed wireless communication system, the relationship between the optimal downlink energy efficiency (EE) and the number of remote access units (RAUs), the number of user antennas, the number of cells and the transmitting power of multiple cells is studied. First, according to the distance between RAU and user, the analytic formula of system throughput is derived. Then, the downlink EE optimization model is established based on the relationship between the actual power consumption parameters and the composite channel, which includes path loss, shadow fading and multipath fading. Finally, based on this, the relationship between the EE and some impact factors including the number of RAUs, the number of user antennas, the number of cells and the transmitting power is deduced, meanwhile the corresponding algorithm is proposed to maximize the EE. Theoretical analysis and simulation results verify that the correctness of the relationship between system EE and multiple related parameters, and the proposed system EE optimization algorithm also has the advantage of low iteration times.

Key words: massive distributed wireless communication system, downlink, energy efficiency, remote access unit, system throughput

CLC Number:

TN929.5

LI Min-zheng, LI Yan-feng. Research on Downlink Energy Efficiency of Multi-Cell Massive Distributed Antenna System[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2018, 41(6): 26-33.

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Research on Downlink Energy Efficiency of Multi-Cell Massive Distributed Antenna System

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