TY - GEN
T1 - Power Allocation for CoMP in LTE-Advanced system
AU - Liu, Yuqi
AU - Li, Zhuoming
AU - Zhang, Yu
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016/6/22
Y1 - 2016/6/22
N2 - CoMP is one of key technologies in LTE-Advanced system to eliminate inter-cell interference, enhance system throughput and cell-edge spectrum efficiency. CS/CB (Coordinated Scheduling / Coordinated Beamforming) and JT (Joint Transmission) are two main technologies of CoMP. In this paper, cell-edge users transmit data by JT scheme, and cell-center users adopt CB scheme to eliminate interference. Precoding algorithm based on SLNR (Signal to Leakage and Noise Ratio) is adopted to improve quality of desired signal and restrain interference from adjacent cells. The proposed CoMP system gets more than 80% gain on both throughput and spectrum efficiency than single-point transmission. Based on the proposed coordinated system above, CoPA (Convex Optimization Power Allocation) power allocation scheme is proposed to maximize cell total data rates, subjected to maximum transmit power of each eNodeB. The proposed power allocation scheme achieves 2.3% gain on both throughput and spectrum efficiency compared with EPA (Equal Power Allocation).
AB - CoMP is one of key technologies in LTE-Advanced system to eliminate inter-cell interference, enhance system throughput and cell-edge spectrum efficiency. CS/CB (Coordinated Scheduling / Coordinated Beamforming) and JT (Joint Transmission) are two main technologies of CoMP. In this paper, cell-edge users transmit data by JT scheme, and cell-center users adopt CB scheme to eliminate interference. Precoding algorithm based on SLNR (Signal to Leakage and Noise Ratio) is adopted to improve quality of desired signal and restrain interference from adjacent cells. The proposed CoMP system gets more than 80% gain on both throughput and spectrum efficiency than single-point transmission. Based on the proposed coordinated system above, CoPA (Convex Optimization Power Allocation) power allocation scheme is proposed to maximize cell total data rates, subjected to maximum transmit power of each eNodeB. The proposed power allocation scheme achieves 2.3% gain on both throughput and spectrum efficiency compared with EPA (Equal Power Allocation).
KW - coordinated beamforming
KW - joint transmission
KW - power allocation
KW - precoding based on SLNR
UR - https://www.scopus.com/pages/publications/84980319736
U2 - 10.1109/CHINACOM.2015.7497971
DO - 10.1109/CHINACOM.2015.7497971
M3 - 会议稿件
AN - SCOPUS:84980319736
T3 - Proceedings of the 2015 10th International Conference on Communications and Networking in China, CHINACOM 2015
SP - 387
EP - 392
BT - Proceedings of the 2015 10th International Conference on Communications and Networking in China, CHINACOM 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 10th International Conference on Communications and Networking in China, CHINACOM 2015
Y2 - 15 August 2015 through 17 August 2015
ER -