分布式网络中进度密度的研究

Study of Density of Progress for Distributed Networks

基于分布式网络中目的接收机位于有限远处这一假设,重新定义了有效传输距离,从理论上推导了有效传输距离期望值和进度密度的上下界,研究了网络参数对进度密度的影响,为分布式网络建设最大化网络容量提供了重要的参考依据.数值分析和仿真结果表明:有效传输距离期望值的仿真值介于理论推导的上、下界之间,并且随着中继接收机选择区域角度的增加而减小;进度密度的仿真值介于理论推导的上下界之间,且更趋近于上界,进度密度主要由有效传输距离期望值和最大中断概率决定.

Based on the assumption that the distance between the source transmitter and the final receiver is not infinite in distributed network, the effective transmission distance is redefined, the upper and lower bounds of the expectation of effective transmission distance and the density of progress are derived, and how the network parameters affect the density of progress is studied. Numerical and simulation results show that： the sim ulation value for the expectation of effective transmission distance is between its upper and lower bounds, and decreases with the angle of the region for the selection of relay; the simulation value for the density of progress, which is between its upper and lower bounds, is closer to its upper bound, and the density of progress is determined by the expectation of effective transmission distance and the maximum probability of outage.