THz and Photonic Seamless Communications
THz and Photonic Seamless Communications
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DOI：
10.1109/jlt.2019.2897042
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发表时间：
2019-04-01
影响因子：
4.7
通讯作者：
Kawanishi, Tetsuya
中科院分区：
文献类型：
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作者：
Kawanishi, Tetsuya
太赫兹(THz)波利用宽带可以提供超过100 GB/S的无线传输。由于高频波的特性，例如光波，太赫兹可以具有很高的方向性。为了缓解无线电频谱的拥塞，先进的调制格式将在太赫兹频段以及传统的毫米波或微波手中发挥重要作用。本文将对太赫兹波系统的频谱效率和传输容量进行综述。无线电链路的功率消耗也将是降低网络运营支出的一个重要问题。对短距离无线系统功耗的调查表明，使用太赫兹频段的高速无线电传输将提供低功耗传输。然而，由于空气中的衰减，太赫兹的传输距离将被限制在几公里以内。由太赫兹链路和光纤组成的无缝网络将提供高速、低延迟和低功耗的数据传输。为光纤传输开发的设备和信号处理功能可以应用于高速太赫兹通信。
Terahertz (THz) wave can offer over 100-Gb/s wireless transmission by the use of wide spectrum. Due to features of high-frequency waves such as lightwaves, THz can have high directivity. To mitigate congestion of radio spectrum, advanced modulation formats will play significant roles in THz bands as well as in conventional millimeter-wave or microwave hands. This paper will provide overviews on spectral efficiency and transmission capacity of THz wave systems. Power consumption of radio links would be also an important issue to reduce OPEX of networks. Survey on power consumption of short-distance wireless systems implies that high-speed radio transmission using THz bands would provide low power consumption transmission. However, THz transmission distance will be limited in shorter than a few kilometers due to attenuation in the air. Seamless networks consisting of THz links and optical fibers would provide high-speed, low-latency, and low power consumption data transmission. Devices and signal processing functions developed for optical fiber transmission can be applied to high-speed THz communications.