Utility-Based Joint Scheduling Approach Supporting Multiple Services for Co MP-SUMIMO in LTE-A System

In this paper, we study utilitybased resource allocation for users supporting multiple services in a LTEA system with coordinated multipoint transmission for singleuser multiinput multioutput （CoMPSUMIMO）. We designed Joint Transmission Power Control （JTPC） for the selected clusters for minimizing power consumption in LTEA systems. The objective of JTPC is to calculate the optimal transmission power for each scheduled user and subcarrier. Moreover, based on the convex optimization theory, we propose the dynamic sector selection method in which the average sector throughput and celledge users （UEs） rates are performed to achieve the optimal solution. Simulation results show that the system performance achieved by using the proposed suboptimal algorithm is close to that achieved by the dual decomposition method.

LTE-Advanced中的CoMP技术及其性能分析

CoMP技术是LTE-Advanced的关键技术之一，能够显著的提高小区吞吐量和边缘用户速率，能够有效的抑制小区间干扰。文章首先阐述了CoMP的技术原理和优势并对CoMP技术当前的研究状况进行了论述，之后通过搭建系统级仿真平台对CoMP—SU—MIMO技术的性能进行了分析，得出了不同模式下用户吞吐量的变化范围。