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THz Communications for Mobile Heterogeneous Networks

Feature Topic


What will a beyond 5G network look like in the paradigm of mobile heterogeneous networks (MHN)? It is too early to define this with any certainty. However, it is widely agreed that in contrast to 5G networks, beyond 5G network should achieve greater system capacity (>1000 times) than the 5G network. It is widely accepted that there are three major ways to obtain several orders of this magnitude in throughput gain, those being: extreme densification of infrastructure, large quantities of new bandwidth, and many more antennas, allowing a throughput gain in the “spatial” dimension. In reality, these processes are complementary in many respects. For example, in the search for more bandwidth, we are moving toward higher frequencies, especially in the promising THz frequency spectrum. Among other approaches, opportunist access to certain frequency bands, cognitive radio, co-primary usage in shared bands, and massive and distributed MIMO are already under deployment. At the other end, systems at 60 GHz and above, even up to 400 GHz, are currently under consideration as a natural way of providing wireless terabit-per-second (Tbps) links. The Tbps links are expected to become a reality within the next five to ten years. Advanced multi-layer solutions, and, more importantly, new spectral bands will be required to support these extremely high data rates. Terahertz band communication is envisioned as a key wireless technology to satisfy real-time traffic demand for MHN systems, by reducing the spectrum scarcity and capacity limitations of current wireless systems. The THz band is the spectral band that spans the frequencies between 0.1 THz and 10 THz. Although the frequency regions immediately above and below this band (the microwaves and the far-infrared, respectively) have been considerably investigated, this is still one of the least explored frequency bands for mobile heterogeneous networks.

This Feature Topic (FT), motivated by the latest advances in THz bands towards beyond 5G research initiative, expects significant contributions including various aspects, ranging from the physical layer signal processing techniques, and the medium access control design, to the networking protocols, of mobile heterogeneous networks. This FT will bring together academic and industrial researchers to identify and address technical challenges and recent results related to THz communications for mobile heterogeneous networks. Specific topics include, but are not limited to:

  • THz band transceivers for mobile heterogeneous networks
  • Massive MIMO antenna arrays for THz mobile heterogeneous networks
  • Information theoretic issues of THz band communication in
  • The novel waveform for THz-band communication in MHNs
  • 3D models for THz networks.
  • Channel estimation techniques for THz-band communications
  • Modulation and channel coding for THz-band MHNs.
  • MAC layer design for THz MHNs
  • Interference management for THz communications
  • Random matrix theory and THz-wave massive MIMO analysis of MHNs
  • Beamforming, precoding, and space-time coding schemes
  • Backhaul transmissions of THz-band communications for MHNs
  • Delay latency issues in MHN THZ communications.
  • Impact of THz communication vehicular networks
  • System-level modeling in for MHN THz communications
  • Architectural experimental demonstrations, tests and performance characterization of THz systems
  • Resource allocation aspects for MHN THz communication system.
  • Health and safety issues in THz band
  • Energy efficient mechanisms for the THz systems.
  • Standardization and business models for THz networks in MHN paradigm


Kazi Mohammed Saidul Huq
Instituto de Telecomunicações, Portugal

Josep Jornet
University of Buffalo, USA

Wolfgang Gerstacker
Universität Erlangen-Nürnberg, Germany

Jocelyn Aulin
Huawei, Sweden

Anwer Al-Dulaimi
EXFO, Canada

Zhenyu Zhou
North China Electric Power University, China