基于检测与躲避(DAA)的超宽带(UWB)无线通信技术将认知无线电与超宽带技术相结合,是解决UWB通信系统与现有无线通信系统之间的相互干扰问题的最有效方案.针对DAA技术的关键问题——如何实现UWB抗干扰发送波形的频谱整形,综述了近年来在UWB适配波形的频谱整形研究领域的最新进展,并对未来研究发展方向进行了分析与探讨.
Incorporating cognitive radio (CR) mechanism into ultra wideband (UWB), the detect and avoid (DAA) based UWB wireless communication technique is capable of solving the interference between UWB communication systems and existing wireless communications systems. According to the key problem in DAA, spectrum shaping for UWB transmitted waveform, the state of arts on the research work is reviewed, and the development trend is analyzed.