基于智能天线的多跳空分复用蜂窝网容量分析

Capacity analysis of uplink channel through spatial reuse and smart antenna in multi-hop cellular network

为了提高无线频谱效率,多跳蜂窝系统中多跳与蜂窝系统需要使用相同的频率资源。采用频率空分复用技术和智能天线技术降低节点间的干扰,通过设置不同的频率复用因子,并根据网络节点分布确定多跳节点的间距,为系统带来不同的容量增益。结果表明,空分复用和智能天线技术大大提高了多跳蜂窝系统的容量。

To improve the spectral efficiency, the same frequency resource is shared by both the cellular subsystem and multi-hop nodes in multi-hop cellular networks. A novel scheme making full use of the merits of frequency reuse and smart antennas to reduce interference efficiently in band is proposed. The frequency reuse factor and the multi-hop node intervals are adjusted according to the network topologies, thus the system capacity can be optimized to fit various applications. The analysis and simulation results show that capacity gain is highly improved by using the proposed scheme.