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采用随机几何方法,分析了有扰的协作自组织网络的性能并给出中继的选择区域. 首先,假设随机网络中的节点服从泊松分布,得到最佳中继选择算法中断概率的闭式解; 其次,给出了此算法的网络容量; 最后,定义性能参数来衡量采用最佳中继选择算法带来的性能增益,并根据此参数得到中继选择区域以保证采用最佳中继选择算法时可以得到的性能增益. 分析和仿真结果表明: 最佳中继选择算法的性能不仅取决于源节点和中继节点的密度,还与路径损耗参数和解码门限等网络参数有关,在传输距离较远、干扰较多、解码门限较高等情况下比直接传输具有更大的优势.
The stochastic geometric method is used to analyze the performance of the disturbed cooperative self-organizing network and to give the choice of the relay region.Firstly, we assume that the nodes in the stochastic network follow the Poisson distribution, and the closed probability of the best relay selection algorithm is obtained Secondly, the network capacity of this algorithm is given. Finally, we define the performance parameters to measure the performance gains brought by the optimal relay selection algorithm and obtain the relay selection area based on this parameter to ensure the best relay selection The results of analysis and simulation show that the performance of the best relay selection algorithm depends not only on the density of the source node and the relay node but also on the network parameters such as the path loss parameter and the decoding threshold, More distant, more interference, higher decoding threshold than the direct transmission has a greater advantage.