认知超宽带网络的容量分析  

Capacity analysis of cognitive UWB networks

作　　者：洪利[1] 马俊飞[1] 许方敏[2] 李树荣[3] 周正[2] 

机构地区：[1]中国石油大学(华东)计算机与通信工程学院,山东东营257061 [2]北京邮电大学电信工程学院,北京100876 [3]中国石油大学(华东)信息与控制工程学院,山东东营257061

出　　处：《通信学报》2009年第5期136-140,共5页Journal on Communications

基　　金：北京邮电大学泛网无线通信教育部重点实验室资助项目(2007102);国家自然科学基金资助项目(60432040,60572020);北京自然科学基金资助项目(4052021);教育部博士点基金项目(20060013008)~~

摘　　要：分析了认知超宽带网络的容量,考虑到传输功率限制和主系统接收端的干扰温度限制,通过半解析的方法计算出网络的中断概率和最大支持的用户数,并且通过仿真验证了对容量的分析。仿真表明如果增加主系统的干扰温度限,那么认知UWB网络的容量将极大下降,并且传输功率限制和干扰温度限制之间有一定的相关性。The problem of analyzing the capacity of cognitive UWB networks was investigated. Taking into account of several factors such as transmission power constraints, interference temperature constraint in the receiver of primary system, outage probability and maximum allowed users were calculated by semi-analytical approach. Simulations were provided to illustrate the analysis. It is also proved that the increase of interference temperature will deteriorate the capacity of cognitive UWB network; and the constraint of interference temperature is related to the constraint of transmission power.

关 键 词：认知无线电 超宽带 容量 干扰温度 传输功率 

分 类 号：TN929.5[电子电信—通信与信息系统]