Present and Future of Terahertz Communications
Present and Future of Terahertz Communications
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DOI：
10.1109/tthz.2011.2159552
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发表时间：
2011-09-01
影响因子：
3.2
通讯作者：
Nagatsuma, Tadao
中科院分区：
文献类型：
--
作者：
Song, Ho-Jin;Nagatsuma, Tadao
人们消费多媒体服务方式的最新变化正在导致移动的业务的爆炸性增长。随着越来越多的人使用无线网络，对超高速无线通信系统的需求也在增加。到目前为止，这种需求已经被先进的调制方案和微波频率的信号处理技术所满足。然而，在不增加载波频率以获得更多频谱资源的情况下，可能相当难以跟上用户的需求。尽管有几个替代频段，但由于太赫兹波的巨大带宽及其在无线通信中的应用潜力，太赫兹波（THz波）技术的最新进展引起了人们的关注。类似于3000 GHz的275 GHz的频带尚未被分配用于特定用途，其对于具有10 Gb/s或更高数据速率的未来无线系统特别感兴趣。虽然THz通信仍处于非常早期的发展阶段，但已有大量报道显示其潜力。在这篇综述中，我们将研究与通信应用相关的太赫兹波技术的当前进展，并讨论未来太赫兹通信需要考虑的一些问题。
Recent changes in how people consume multimedia services are causing an explosive increase in mobile traffic. With more and more people using wireless networks, the demand for the ultra-fast wireless communications systems is increasing. To date, this demand has been accommodated with advanced modulation schemes and signal-processing technologies at microwave frequencies. However, without increasing the carrier frequencies for more spectral resources, it may be quite difficult to keep up with the needs of users. Although there are several alternative bands, recent advances in terahertz-wave (THz-wave) technologies have attracted attention due to the huge bandwidth of THz waves and its potential for use in wireless communications. The frequency band of 275 similar to 3000 GHz, which has not been allocated for specific uses yet, is especially of interest for future wireless systems with data rates of 10 Gb/s or higher. Although THz communications is still in a very early stage of development, there have been lots of reports that show its potential. In this review, we will examine the current progress of THz-wave technologies related to communications applications and discuss some issues that need to be considered for the future of THz communications.