【資料名稱】：An Effective Inter-cell Interference Coordination

【資料作者】：Qimei Cui, Shan Yang, Yueqiao Xu, Xiaofe

【資料日期】：2011

【資料語言】：英文

【資料格式】：PDF

【資料目錄和簡介】：

Abstract—Coordinated multi-point (CoMP) has been adopted
in 3GPP LTE-Advanced to improve the coverage of high data
rates. Downlink CoMP is mainly categorized into joint
transmission (JT) and coordinated beamforming (CB). Previous
research shows that JT does not benefit cell average throughput.
Moreover, traditional CB algorithms are based on iterative
evaluation, resulting in very high computational complexity. To
address these issues, in this paper, we propose an effective inter-cell
interference coordination scheme for downlink CoMP, which
includes two phases. Firstly, in order to improve the performance
of all user equipments (UEs), cell edge UEs employ JT, while CB is
adopted by both cell edge and cell center UEs. Secondly, we design
linear CB precoders by maximizing a signal to leakage and noise
ratio (SLNR) metric, so as to reduce processing complexity.
System-level simulations validate that, in contrast to non-CoMP,
the proposed scheme brings a cell average spectral efficiency (SE)
gain up to 21.50% and a cell edge SE gain up to 119.2%.