基于认知无线电的MB-UWB频带冲突研究

On Cognitive Radio Multiband UWB:Spectrum

Multiband UWB由于其工作带宽极宽,可以达到很高的通信传输速率,但不可避免的与其他现存的无线设备发生频带冲突。Multiband UWB使用正交频分复用(OFDM)技术,可以实现动态频谱分配和生成传输频谱。本文探讨了Multiband UWB系统动态频谱分配和传输频谱生成的实现方案,同时也介绍了一种易于实现的干扰信号检测方案。

Muhiband Uhra-Wideband systems are able to achieve high data rates and, inevitably, colliding with many existing wireless services because they deal with an excessive wide range of spectrum. Muhiband UWB uses orthogonal frequency division modulation （OFDM） to allocate or shape its transmitting spectrum as cognitive radios do. In this paper, the solutions for avoiding interferences in UWB systems are proposed. And a convenient way of detecting interfering signals is introduced.