Hybrid Beamforming for Terahertz Wireless Communications: Challenges, Architectures, and Open Problems

Digital beamforming in wireless communications

Digital beamformers are a means for separating a desired signal from interfering signals. This paper describes opportunities and constraints for application digital beamforming techniques and adaptive beamforming techniques in wireless communications.

Terahertz band: Next frontier for wireless communications

This paper provides an in-depth view of Terahertz Band (0.1–10 THz) communication, which is envisioned as a key technology to satisfy the increasing demand for higher speed wireless communication. THz Band communication will alleviate the spectrum scarcity and capacity limitations of current wireless systems, and enable new applications both in classical networking domains as well as in novel n...

Review of terahertz and subterahertz wireless communications

Terahertz wireless communications based on photonics technologies.

There has been an increasing interest in the application of terahertz (THz) waves to broadband wireless communications. In particular, use of frequencies above 275 GHz is one of the strong concerns among radio scientists and engineers, because these frequency bands have not yet been allocated at specific active services, and there is a possibility to employ extremely large bandwidths for ultra-...

Security in cognitive wireless sensor networks. Challenges and open problems

A cognitive wireless sensor network (CWSN) is an emerging technology with great potential to avoid traditional wireless problems such as reliability. One of the major challenges CWSNs face today is security. A CWSN is a special network which has many constraints compared to a traditional wireless network and many different features compared to a traditional wireless sensor network. While securi...