摘要
随着信息技术的高速发展和无线频率的资源变得越来越稀缺,在低功耗、远距离的数据传输率方面提出了更高要求,急需寻找一种新的高效率的调制方式显著提高频谱利用率。超窄带(UNB)通信技术是一种高频谱利用率通信技术,占用较少的频率资源,提供高速数据传输,能够提高通信系统数据传输的效率。根据香农定理,从理论方面解释了UNB通信技术的可行性,着重分析了UNB通信技术的EBPSK、VMSK、VWDK三种调制技术的优劣,并展望了通信系统采用UNB通信技术的研究前景。
With the rapid development of information technology and increasing scarce of wireless-frequencies resources and for an even higher requiremnet is put forward in the respect of low power-consumption and long-distance data-transfer rate, there is pressing need to find a high-efficient modulation mode and significantly improve the spectrum utilization. UNB（Ultra Narrow Band） communication technology, as a high spectrum-utilization communication technology, occupies fairly small frequency resource, while providing high-speed data transmission, and can improve the efficiency of data transmission. In accordance with Shannon＇s theorem, the feasibility of UNB communication technology is theoretically explained, the three modulations of UNB communication technology including EBPSK, VMSK and VWDK are discussed emphatically. In addition, the application prospects of UNB communication technology are forecasted.
出处
《通信技术》
2017年第8期1629-1632,共4页
Communications Technology
关键词
超窄带
频谱利用率
高速数据传输
调制技术
UNB（Ultra Narrow Band）
bandwidth efficiency
high-speed data transmission
modulation technique
