基于认知超宽带的频谱共享技术研究  

Spectrum Sharing Technology Research Based on Cognitive Ultra Wideband

作　　者：施圣[1] 徐昌彪[1] 

机构地区：[1]重庆邮电大学移动通信重点实验室,重庆400065

出　　处：《电视技术》2011年第9期75-78,81,共5页Video Engineering

基　　金：重庆邮电大学青年基金项目(A2008-28);重庆市教委项目(200904B1A0010306)

摘　　要：引入了认知无线电思想构成认知超宽带(CUWB),达到抑制窄带的通信目的。分析了高斯导函数组合脉冲波形叠加的方式以及脉冲形成因子的寻找算法,并且结合认知无线电频谱检测技术在干扰频点降低超宽带(UWB)能量。仿真结果证明了引入认知能够提高未受干扰频段功率,增大UWB通信距离,并改善与其他无线系统频谱共享。With the introduction of Cognitive Radio （CR）, it would constitute CUWB system, which could avoid the interference of narrow-band system. In this paper, the Gaussian derivative pulse superposition method alone with pulse forming factors algorithm is analyzed, and combined with spectrum detection technology in CR, the UWB frequency interference energy can be reduced in the middle of narrow-band. Simulation results prove that with the introduction of CR, it could improve the undisturbed band power, increase the UWB communication range, ameliorate sharing spectrum with other wireless systems.

关 键 词：认知超宽带 频谱共享 频谱检测 脉冲波形设计 

分 类 号：TN911[电子电信—通信与信息系统]