Performance evaluation of THz wireless systems under the joint impact of misalignment fading and phase noise

Alexandros-Apostolos A. Boulogeorgos; Angeliki Alexiou; Evangelos N. Papsotiriou

arxiv: 1907.08494 · v1 · pith:NXFPPWFWnew · submitted 2019-07-19 · 💻 cs.IT · eess.SP· math.IT

Performance evaluation of THz wireless systems under the joint impact of misalignment fading and phase noise

Evangelos N. Papsotiriou , Alexandros-Apostolos A. Boulogeorgos , Angeliki Alexiou This is my paper

Pith reviewed 2026-05-24 18:51 UTC · model grok-4.3

classification 💻 cs.IT eess.SPmath.IT

keywords THz wireless systemsmisalignment fadingphase noiseSINRoutage probabilitymulti-carrierperformance evaluation

0 comments

The pith

Misalignment fading and local oscillator phase noise jointly reduce average SINR and raise outage probability in multi-carrier THz systems.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper builds a system model for multi-carrier THz links that includes the channel properties and transceiver features. Simulations then measure how misalignment fading and phase noise together affect average signal-to-interference-plus-noise ratio and outage probability. A sympathetic reader would care because these effects are native to THz frequencies and can determine whether such links meet reliability targets in practice.

Core claim

After establishing a suitable system model that takes into account the particularities of the THz channel, as well as the transceivers characteristics, simulation results quantify the joint impact of misalignment fading and PHN in terms of average SINR and OP.

What carries the argument

The system model that incorporates THz channel particularities and transceiver characteristics to capture the joint statistical behavior of misalignment fading and phase noise.

Load-bearing premise

The system model accurately captures the joint statistical behavior of misalignment fading and local-oscillator phase noise for the multi-carrier THz scenario under study.

What would settle it

Real-world measurements from a multi-carrier THz link that show average SINR and outage probability values differing substantially from the simulated results under the same misalignment and phase noise conditions.

read the original abstract

In this paper, we investigate the joint impact of misalignment fading and local oscillator (LO) phase noise (PHN) in multi-carrier terahertz (THz) wireless systems. In more detail, after establishing a suitable system model that takes into account the particularities of the THz channel, as well as the transceivers characteristics, we present simulation results that quantify the joint impact of misalignment fading and PHN in terms of average signal-to-interference-plus-noise-ratio (SINR) and outage probability (OP).

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Desk Editor's Note private letter to a colleague

Simulation study applying known models to quantify joint misalignment and phase noise effects on THz SINR and outage, but incremental with no new derivations.

read the letter

This paper runs simulations to quantify how misalignment fading and local oscillator phase noise together affect average SINR and outage probability in multi-carrier THz systems. The abstract frames it as establishing a system model that accounts for THz channel and transceiver details, then showing the joint impact numerically. That is the core output. It gives concrete performance curves under combined impairments, which could feed into link budget work in this band. The approach is straightforward simulation of established fading and phase noise models applied to THz. No closed-form results or new phenomena are claimed. The main value is the joint quantification rather than separate treatment of each impairment. Soft spots stand out because only the abstract is available here. Without the full equations or simulation setup, it is impossible to verify if the model captures the joint statistics accurately or if parameter choices drive the reported curves. The work is explicitly positioned as performance evaluation, not a theoretical advance, so the contribution stays incremental. The citation pattern and any comparisons to prior separate-impairment studies are not visible. This is aimed at THz communications researchers who need impairment data for system design. A reader seeking new math or fundamental insights will not find it. If the full paper includes transparent modeling, reproducible simulation parameters, and clear baselines, it could be worth a look for the numbers. I would send it to peer review. The topic is timely for THz hardware considerations, and simulation studies of this type can be useful even when incremental, provided the setup is solid and the assumptions are stated plainly.

Referee Report

0 major / 2 minor

Summary. The manuscript develops a system model for multi-carrier THz wireless links that incorporates THz-specific propagation effects together with transceiver impairments, then uses Monte-Carlo simulation to quantify the combined influence of misalignment fading and local-oscillator phase noise on average SINR and outage probability.

Significance. If the reported simulation outcomes are reproducible, the work supplies concrete numerical evidence of the performance penalty incurred when both impairments act simultaneously, which is useful for link-budget design and waveform selection in the THz band. The simulation framework itself constitutes a reusable testbed for exploring additional THz impairments.

minor comments (2)

[Abstract] The abstract states that simulation results are presented but does not indicate the number of Monte-Carlo realizations, the range of misalignment variances, or the PHN 3 dB bandwidths employed; adding these details would improve reproducibility.
[System Model] Notation for the combined channel gain (misalignment fading multiplied by the PHN-induced phase term) should be introduced once in the system-model section and used consistently thereafter to avoid repeated inline definitions.

Simulated Author's Rebuttal

0 responses · 0 unresolved

We thank the referee for the positive review and the recommendation to accept the manuscript.

Circularity Check

0 steps flagged

No significant circularity in simulation-based evaluation

full rationale

The paper positions its contribution as establishing an explicit system model for THz channels (including misalignment fading and LO phase noise) followed by Monte Carlo simulation to quantify average SINR and outage probability. No algebraic derivation, closed-form prediction, or first-principles claim is advanced that could reduce to fitted parameters, self-citations, or input definitions by construction. The central results are obtained by direct simulation of the stated model; therefore none of the enumerated circularity patterns apply. The work is self-contained against external benchmarks in the sense that its outputs are generated from the model rather than asserted as independent predictions.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

Abstract supplies no equations, parameters, or new entities; ledger is therefore empty.

pith-pipeline@v0.9.0 · 5628 in / 1025 out tokens · 20238 ms · 2026-05-24T18:51:49.402997+00:00 · methodology

Performance evaluation of THz wireless systems under the joint impact of misalignment fading and phase noise

Core claim

What carries the argument

Load-bearing premise

What would settle it

discussion (0)