TY - JOUR
T1 - Bidirectional dynamic networks with massive MIMO
T2 - Performance analysis
AU - Xin, Yuanxue
AU - Yang, Liuqing
AU - Wang, Dongming
AU - Zhang, Rongqing
AU - You, Xiaohu
N1 - Publisher Copyright:
© The Institution of Engineering and Technology 2017.
PY - 2017/3/9
Y1 - 2017/3/9
N2 - To cope with the growing trend of asymmetric data traffic, the bidirectional dynamic networks (BDNs) wdynamically allocate the number of uplink and downlink remote radio heads (RRHs), which facilitates simultaneous uplink and downlink communications. In this study, the authors derive the asymptotic approximations of the achievable uplink and downlink rates using maximum ratio transmission precoder and maximum ratio combination receiver, as the RRH antenna number (M) approaches infinity. Considering an optical fibre connected backhaul network, a practical power consumption model is presented to study the system energy efficiency (EE). Based on the asymptotic analysis, they exploit the power scaling laws that both the uplink and downlink powers should scale down to 1/M to maintain a desirable uplink or downlink rate. Numerical results verify that when M is large, the BDN system outperforms the dynamic time division duplex system in both the spectral efficiency and EE.
AB - To cope with the growing trend of asymmetric data traffic, the bidirectional dynamic networks (BDNs) wdynamically allocate the number of uplink and downlink remote radio heads (RRHs), which facilitates simultaneous uplink and downlink communications. In this study, the authors derive the asymptotic approximations of the achievable uplink and downlink rates using maximum ratio transmission precoder and maximum ratio combination receiver, as the RRH antenna number (M) approaches infinity. Considering an optical fibre connected backhaul network, a practical power consumption model is presented to study the system energy efficiency (EE). Based on the asymptotic analysis, they exploit the power scaling laws that both the uplink and downlink powers should scale down to 1/M to maintain a desirable uplink or downlink rate. Numerical results verify that when M is large, the BDN system outperforms the dynamic time division duplex system in both the spectral efficiency and EE.
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U2 - 10.1049/iet-com.2016.0272
DO - 10.1049/iet-com.2016.0272
M3 - Article
AN - SCOPUS:85014799949
SN - 1751-8628
VL - 11
SP - 468
EP - 476
JO - IET Communications
JF - IET Communications
IS - 4
ER -