摘要
协作多点传输(CoMP)作为一种在LTE-Advanced中的关键技术,用来消除小区间干扰,显著提高用户吞吐量。但是在传统单门限协作用户划分中,信道状态的变化引起用户在传输模式上的频繁切换,产生过度系统回程。提出了一种新型双门限用户划分方法,用户能够根据判定门限的调整保持相对稳定的传输状态。仿真结果表明,该方法在提高用户吞吐量的同时能达到系统性能和回程开销的良好平衡。
Coordinated multi-point （CoMP） is regarded as a key technology in LTE-Advanced to eliminate the inter-cell interference and improve the user throughput. However, in traditional single-threshold coordinated user division, channel state variations lead to frequent user mode changes, placing undue constrains on the system backhaul consumption. A novel user division method based on double-threshold is proposed in this paper, in which user can maintain relatively stable transmission state according to the adjustment of threshold. The simulation results show that the proposed method can improve user throughput and achieve a good balance between system throughput and backhaul overhead.
出处
《无线电通信技术》
2015年第2期76-78,81,共4页
Radio Communications Technology
关键词
COMP
信道隔离度
双门限
回程开销
CoMP
channel isolation
double-threshold
backhaul overhead
