作者
Binbin Dai, Wei Yu
发表日期
2016/3/21
期刊
IEEE Journal on Selected Areas in Communications
卷号
34
期号
4
页码范围
1037-1050
出版商
IEEE
简介
This paper studies the energy efficiency of the cloud radio access network (C-RAN), specifically focusing on two fundamental and different downlink transmission strategies, namely the data-sharing strategy and the compression strategy. In the data-sharing strategy, the backhaul links connecting the central processor (CP) and the base-stations (BSs) are used to carry user messages-each user's messages are sent to multiple BSs; the BSs locally form the beamforming vectors then cooperatively transmit the messages to the user. In the compression strategy, the user messages are precoded centrally at the CP, which forwards a compressed version of the analog beamformed signals to the BSs for cooperative transmission. This paper compares the energy efficiencies of the two strategies by formulating an optimization problem of minimizing the total network power consumption subject to user target rate constraints …
学术搜索中的文章
B Dai, W Yu - IEEE Journal on Selected Areas in Communications, 2016