有限回程容量约束下多点协作接收技术综述

Coordinated Multi-Point Reception with Constrained Backhaul Capacity in Wireless Communication System

多点协作技术(coordinated multi-point,Co MP)通过在回程链路上交互信息实现多节点协同发送和接收,消除小区间干扰,提升小区边界用户的频谱效率。然而,回程链路容量有限这一非理想因素制约着多点协作增益。因此,通过对学术界的研究现状进行总结,将有限回程容量下的上行多点协作接收问题根据回程链路网络拓扑划分为集中式处理网络和分布式处理网络两大类,并对未来的研究趋势进行展望。

The coordinated multi-point technology realizes cooperative transmission and reception by exchanging information between access points via backhaul links, in order to mitigate inter-cell in- terference and improve cell-edge users＇ spectrum efficiency. However, the baekhaul capacity is lim- ited in practice, which restricts the multi-point cooperation gain. Therefore, this paper summarizes the current research and classifies the issue of uplink multi-point reception with limited backhaul ca- pacity into two categories： the centralized processing network and the distributed processing net- work. Finally, the paper gives the trend and prospects for future research.