TY - GEN
T1 - Energy efficiency of relay aided D2D communications underlaying cellular networks
AU - Zhang, Rui
AU - Li, Yongzhao
AU - Wang, Cheng-Xiang
AU - Ruan, Yuhan
AU - Zhang, Hailin
PY - 2018/2/15
Y1 - 2018/2/15
N2 - Given the fact that the relay contributes to higher data rate or more reliable transmission at the expense of extra power consumption, we investigate the performance of relay aided Device-to-Device (D2D) communications from the perspective of energy efficiency (EE). Firstly, a closed-form expression for the EE of the considered network over Nakagami-m fading channels is derived. Then, taking into account the effects of practical modulation and coding schemes, we propose a channel quality indicator (CQI) based power control approach to maximize the EE of relay aided D2D communications while guaranteeing the interference limitation. The proposed scheme could avoid unnecessary power increment and is applicable in real time resource allocation. Simulation results demonstrate the validity of the theoretical analysis and illustrate that the CQI based scheme can improve EE.
AB - Given the fact that the relay contributes to higher data rate or more reliable transmission at the expense of extra power consumption, we investigate the performance of relay aided Device-to-Device (D2D) communications from the perspective of energy efficiency (EE). Firstly, a closed-form expression for the EE of the considered network over Nakagami-m fading channels is derived. Then, taking into account the effects of practical modulation and coding schemes, we propose a channel quality indicator (CQI) based power control approach to maximize the EE of relay aided D2D communications while guaranteeing the interference limitation. The proposed scheme could avoid unnecessary power increment and is applicable in real time resource allocation. Simulation results demonstrate the validity of the theoretical analysis and illustrate that the CQI based scheme can improve EE.
UR - http://www.scopus.com/inward/record.url?scp=85045266342&partnerID=8YFLogxK
U2 - 10.1109/PIMRC.2017.8292545
DO - 10.1109/PIMRC.2017.8292545
M3 - Conference contribution
AN - SCOPUS:85045266342
SN - 9781538635292
T3 - IEEE Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
BT - 2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)
PB - IEEE
ER -
