6G With TeraHertz Communications

Abstract

The terahertz band is the next frontier in wireless communications for its ability to unlock significantly wider segments of unused bandwidth. It offers the enhanced transmission bandwidth when compared to mmwave band in 5G networks. Terahertz communication reduces the problem of mmWave bands where the propagation loss is more due to molecule absorption of electromagnetic waves. The development of Reconfigurable MIMO techniques, subwavelength guiding structures, nanoantennas, superlenses, hyperlenses and light concentrators, communication distance can be increased in THz systems. 6G wireless networks will consist of a multitude of small radio cells with shorter communication distances. Base stations of radio cells in the 6G network need to be connected with high-speed wireless, enhanced data rate, minimum energy consumption, and low electromagnetic emission links. These broad band links can be implemented by terahertz waves in 6G networks. Terahertz bands are inevitably going to be the next in line. THz communication will contribute to enabling interesting and needed applications.