Performance Evaluation of THz-Enabled Cloud-IoT Networks Using a Hybrid Multi-Criteria Decision-Making Framework
Duong Van Hieu
Signals and Telecommunication Journal, Vol. 15, No. 2, 2026.
DOI: https://doi.org/10.6025/stj/2026/15/2/88-110
Link: https://www.dline.info/stj/fulltext/v15n2/stjv15n2_3.pdf
Abstract:
The evolution of sixth generation (6G) networks relies heavily on Terahertz (THz) communications and
Cloud-IoT architectures, which introduce complex trade-offs between communication quality, network
stability, and security overhead. Evaluating these heterogeneous environments requires comprehensive
frameworks capable of handling multiple, often conflicting performance criteria. This study proposes a
novel hybrid Multi Criteria Decision-Making (MCDM) framework to evaluate THz enabled Cloud IoT networks.
Using a comprehensive dataset of 4,000 observations encompassing environmental, communication, and
blockchain-based security metrics, we integrate both subjective and objective weighting mechanisms.
Specifically, the Analytic Hierarchy Process (AHP), Entropy Weight Method (EWM), and CRITIC are utilized
to derive criterion weights, which are subsequently applied in TOPSIS and VIKOR ranking algorithms. The
results signal a high degree of concordance among the weighting schemes. AHP and CRITIC prioritize core
communication metrics like signal strength and bandwidth, while EWM highlights the critical statistical
variability of blockchain validation latency. Extensive sensitivity analyses confirm the frameworkâ€™s structural
robustness against weight perturbations. Furthermore, TOPSIS and VIKOR rankings consistently identify
optimal network configurations that effectively balance high capacity links with low latency and robust
trust scores. These findings emphasize that optimizing next generation systems requires a holistic approach
to dynamically adapt to multi dimensional constraints. Ultimately, this hybrid MCDM approach offers a
rigorous, multi perspective decision support tool for network architects, ensuring the optimal deployment of
intelligent, secure, and high performance 6G THz Cloud IoT environments.