联合位置信息和中断概率的中继选择算法

The Relay Selection Algorithm Based on Location Information and Outage Probability

针对短距离通信中多个干扰源对信宿产生影响的问题,提出一种联合位置信息和中断概率的中继选择算法。基于节点位置信息对最佳中继位置的选择进行分析,从而构造满足一定条件的候选中继节点集合,进而形成中继节点协作域。基于中继节点协作域,分析研究多个干扰源情况时的中断概率,选择中断概率最小的中继节点作为信息转发节点。研究表明,所给出的算法可以有效控制参与中继的节点数以节省系统开销,进而降低中断概率,提升信息传输能力。

Taking into account the influence on destinations caused by multiple interference in short distance comnlunications, this paper proposes a relay selection algorithm based on the location intbrmation and outage probability. The best relay selection that satisfies certain condition will be constructed based on position information. Eventually, a cooperation domain is forlned. By analyzing the outage probability with multiple interference, the relay node which has a minimal outage probability from the cooperation domain is chosen as the forward node. Experiment results demonstrate that the proposed algorithm can effectively control the number of candidate relays with lower the system complexity, and reduce the outage probability to improve the transmission capacity.