D3.4 THz information theoretic results

The present deliverable “THz information theoretic results,” focuses on presenting novel
network information theoretic frameworks for assessing different THz systems. New research
tools for evaluating the THz network performance bounds are also proposed. In particular, in
this deliverable, the instantaneous and average SNR, the outage probability as well as the
ergodic capacity are used as key performance indicators of single- and multiple wireless THz
links scenarios. Moreover, insightful bounds with low-computational complexity are extracted.
Section 2 provides a brief literature review of the wireless THz channel models, which have been
presented in the open literature and presents a novel simplified channel model, which can
accommodate the wireless THz channel particularities and it was used for performance
assessment in this deliverable. Section 3 reports and discusses three single-link wireless THz
scenarios. The first one is mapped in the THz wireless fibre extender case and takes into account
the joint impact of misalignment fading and hardware imperfections. The second one discusses
the impact of hardware imperfections in indoor wireless THz scenarios, in which digital
beamforming is employed, while the third one addresses the impact of blockage in the indoor
cases. Moreover, Section 4 establishes a suitable system model, which uses stochastic
geometry, in order to present the impact of interference in wireless THz systems. For all the
above scenarios, novel closed-form expressions are extracted for the key performance
indicators, namely instantaneous and average signal-to-noise (SNR), signal-to-distribution-plusnoise
ratio (SDNR), and signal-to-interference-plus-noise-ratio (SINR), outage probability and
ergodic capacity. Simplified performance bounds are also reported that quantifies the systems’
performance constraints. Furthermore, respective simulation results are presented, which
reveal the limitations and characteristics of the corresponding wireless THz systems. Finally,
closing remarks and conclusions are presented in Section 5.
The main outcomes of the deliverables are:
 A brief literature survey on the fundamental wireless THz channels;
 A novel simplified channel model that accommodates the particularities of the wireless
THz systems;
 Novel system models for wireless THz systems are formulated, which accommodate
the characteristics of this type of links as well as the transceivers particularities for both
outdoor and indoor communication scenarios;
 Exact closed-form expressions for wireless THz systems KPIs, namely SNR, SDNR, SINR,
outage probability and ergodic capacity for the system models under consideration;
 Low-computational complexity performance bound for wireless THz systems;
 Novel expressions that describe the interference profile in multi-link systems; and
 Illustrative results that reveal important technical insights and THz systems limitations
that should be taken into account in the design of wireless THz systems.
You can find the PDF here: TERRANOVA D3.4