【摘要】 技术的发展和个人通信量需求的增长,使得电磁频谱资源日益紧缺,成为当今无线通信技术发展的瓶颈。分析了在信道存在加性白噪声和多址干扰的条件下,频带细化对提高频谱利用率的作用。指出传统频分复用方式和扩频通信方式下频谱利用率不高的根本原因,提出了一种提高频谱利用率的多子频带/多子信道关联跳频通信技术。使用该技术可极大地提高通信频谱利用率,同时可提高通信的保密性。更多还原

【Abstract】 The development of technology and the communication demand leads to the lack of frequency bandwidth in wireless communication,which is a bottleneck of wireless communication technology.The effect of bandwidth division on the improvement of the frequency spectrum utilization is analyzed under the condition of the multi-access interference and Gaussian white noise.The basic reason why the frequency spectrum utilizatio is not high in the modes of the traditional frequency-division multiplexing(FDM) and spread spectrum communication(SSC) is pointed.A multi-sub-bandwidth/sub-channel correlative frequency hopping communication technology which can improve the frequency spectrum utilization and communication confidentialty is proposed.更多还原