University of Oulu

Y. Wu, J. Kokkoniemi, C. Han and M. Juntti, "Interference and Coverage Analysis for Terahertz Networks With Indoor Blockage Effects and Line-of-Sight Access Point Association," in IEEE Transactions on Wireless Communications, vol. 20, no. 3, pp. 1472-1486, March 2021, doi: 10.1109/TWC.2020.3033825

Interference and coverage analysis for terahertz networks with indoor blockage effects and line-of-sight access point association

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Author: Wu, Yongzhi1; Kokkoniemi, Joonas2; Han, Chong1;
Organizations: 1Terahertz Wireless Communications (TWC) Laboratory, Shanghai Jiao Tong University, Shanghai 200240, China
2Centre for Wireless Communications, University of Oulu, 90570 Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 4.5 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-03-16


Providing high-bandwidth and fast-speed links, wireless local area networks (WLANs) in the Terahertz (THz) band have huge potential for various bandwidth-intensive indoor applications. However, due to the specific phenomena in the THz band, including severe reflection loss, indoor blockage effects, multi-path fading, the analysis on the interference and coverage probability at a downlink is challenging. In this paper, indoor blockage effects caused by the walls and human bodies are analyzed. Next, a statistical THz channel model is proposed to characterize the THz indoor propagation. In light of these, the moment generating functions of the aggregated interference and theoretical expressions for the mean interference power are derived. As a result, the approximated coverage probability and average network throughput are derived. Extensive numerical results show that for the nearest access point (nearest-AP) user association scheme, the optimal AP density is 0.15/m 2, which results in the coverage probability reaches 93% and the average network throughput is 30 Gbps/m 2. In addition, by adopting a novel line-of-sight access point (LoS-AP) user association mechanism, the coverage probability and the average network throughput can be further improved by 3 percent and 2 Gbps/m 2, respectively.

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Series: IEEE transactions on wireless communications
ISSN: 1536-1276
ISSN-E: 1558-2248
ISSN-L: 1536-1276
Volume: 20
Issue: 3
Pages: 1472 - 1486
DOI: 10.1109/TWC.2020.3033825
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This paper was presented in part at the IEEE Globecom workshop, HI, US, December 2019 [1]. Chong Han acknowledges the in-part support by Ministry of Education of China Joint Research Fund under Grant No. 6141A02033350, and National Natural Science Foundation of China (NSFC) under Grant No. 61701300.
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