【摘要】 文中针对当前无线频谱政策和无线频谱技术局限所导致的频谱整体利用率低的问题,分析了能有效提高频谱利用率的动态频谱分配和共享技术的研究现状,包括相邻和分片动态频谱分配技术,共存和覆盖式频谱共享技术,感知无线电技术,以及频谱池技术,并讨论了其未来的研究方向,尤其是感知无线电和基于OFDM的频谱池方法。更多还原

【Abstract】 Due to the limit by spectrum policy and technology, the utilization efficiency of spectrum is low. This paper mainly analyzes the current state of dynamic spectrum allocation and spectrum sharing technologies, including contiguous and fragment DSA, underlay and overlay spectrum sharing, cognitive radio, and spectrum pooling, and with these technologies, the spectrum utilization rate can be improved efficiently. It also discusses the direction for future research, especially for the research of cognitive radio and spectrum pooling based on OFDM.更多还原