{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T16:43:39Z","timestamp":1783701819636,"version":"3.55.0"},"reference-count":38,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2021,9,2]],"date-time":"2021-09-02T00:00:00Z","timestamp":1630540800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The environment of underground coal mines has challenging properties that makes this zone inadaptable for a stable communication system. Additionally, various deteriorating physical parameters strongly affect the performance of wireless networks, which leads to limited network coverage and poor quality of data communication. This study investigates the communication capability in underground coal mines by optimizing the wireless link to develop a stable network for an underground hazardous environment. A hybrid channel-modeling scheme is proposed to characterize the environment of underground mines for wireless communication by classifying the area of a mine into the main gallery and sub-galleries. The complex segments of mine are evaluated by categorizing the wireless links for the line-of-sight (LOS) zones and hybrid modeling is employed to examine the characteristics of electromagnetic signal propagation. For hybrid channel modeling, the multimode waveguide model and geometrical optic (GO) model are used for developing an optimal framework that improves the accessibility of the network in the critical time-varying environment of mines. Moreover, the influence of various deteriorating factors is analyzed using 2.4 GHz to 5 GHz frequency band to study its relationship with the vital constraints of an underground mine. The critical factors such as path loss, roughness loss, delay spread, and shadow fading are examined under detailed analysis with variation in link structure for the mine.<\/jats:p>","DOI":"10.3390\/s21175905","type":"journal-article","created":{"date-parts":[[2021,9,2]],"date-time":"2021-09-02T23:05:12Z","timestamp":1630623912000},"page":"5905","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["An Optimized Approach to Channel Modeling and Impact of Deteriorating Factors on Wireless Communication in Underground Mines"],"prefix":"10.3390","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8804-8348","authenticated-orcid":false,"given":"Fawad","family":"Javaid","sequence":"first","affiliation":[{"name":"College of Communication and Information Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anyi","family":"Wang","sequence":"additional","affiliation":[{"name":"College of Communication and Information Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3768-0989","authenticated-orcid":false,"given":"Muhammad Usman","family":"Sana","sequence":"additional","affiliation":[{"name":"College of Computer Science Technology, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Asif","family":"Husain","sequence":"additional","affiliation":[{"name":"College of Communication and Information Engineering, Xi\u2019an University of Science and Technology, Xi\u2019an 710054, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8271-6496","authenticated-orcid":false,"given":"Imran","family":"Ashraf","sequence":"additional","affiliation":[{"name":"Department of Information and Communication Engineering, Yeungnam University, Gyeongsan 38544, Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2021,9,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bandyopadhyay, L., Chaulya, S., and Mishra, P. (2010). Wireless communication in underground mines. RFID-Based Sensor Networking, Springer.","DOI":"10.1007\/978-0-387-98165-9"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"11","DOI":"10.1109\/MAP.2007.376637","article-title":"Wireless propagation in tunnels","volume":"49","author":"Dudley","year":"2007","journal-title":"IEEE Antennas Propag. Mag."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Barkand, T.D., Damiano, N.W., and Shumaker, W.A. (2006, January 8\u201312). Through-the-earth, two-way, mine emergency, voice communication systems. Proceedings of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting, Tampa, FL, USA.","DOI":"10.1109\/IAS.2006.256640"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Chehri, A., Fortier, P., and Tardif, P.M. (2007, January 14\u201317). Security monitoring using wireless sensor networks. Proceedings of the Fifth Annual Conference on Communication Networks and Services Research (CNSR\u201907), Frederlcton, NB, Canada.","DOI":"10.1109\/CNSR.2007.58"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"669","DOI":"10.1016\/j.adhoc.2006.04.003","article-title":"Wireless underground sensor networks: Research challenges","volume":"4","author":"Akyildiz","year":"2006","journal-title":"Ad Hoc Netw."},{"key":"ref_6","first-page":"23","article-title":"Communications Challenges in Underground Mines","volume":"5","author":"Ranjan","year":"2014","journal-title":"Communications"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1524","DOI":"10.1109\/SURV.2013.031413.00130","article-title":"A survey of wireless communications and propagation modeling in underground mines","volume":"15","author":"Forooshani","year":"2013","journal-title":"IEEE Commun. Surv. Tutor."},{"key":"ref_8","unstructured":"Taylor, C., and Reid, W. (2021, March 24). Improved Mining Safety, Communications and Productivity Through the Use of Fiber Optics. Available online: https:\/\/citeseerx.ist.psu.edu\/viewdoc\/download?doi=10.1.1.119.4389&rep=rep1&type=pdf."},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Chehri, A., and Mouftah, H. (2010, January 26\u201329). Radio channel characterization through leaky feeder for different frequency bands. Proceedings of the 21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Istanbul, Turkey.","DOI":"10.1109\/PIMRC.2010.5671859"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1016\/j.phycom.2009.03.004","article-title":"Signal propagation techniques for wireless underground communication networks","volume":"2","author":"Akyildiz","year":"2009","journal-title":"Phys. Commun."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Shaydurov, G., Kudinov, D., Kokhonkova, E., and Shchitnikov, A. (2016, January 12\u201314). Through-the-earth communication in underground mines by electromagnetic waves. Proceedings of the 2016 International Siberian Conference on Control and Communications (SIBCON), Moscow, Russia.","DOI":"10.1109\/SIBCON.2016.7491771"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Tao, J. (2011, January 24\u201325). Research on electromagnetic wave through-the-earth wireless communication for coal mine disaster. Proceedings of the International Conference on Web Information Systems and Mining, Taiyuan, China.","DOI":"10.1007\/978-3-642-23971-7_1"},{"key":"ref_13","unstructured":"Cerasoli, C. (November, January 31). RF propagation in tunnel environments. Proceedings of the Military Communications Conference, Monterey, CA, USA."},{"key":"ref_14","unstructured":"Ndoh, M., and Delisle, G.Y. (2004, January 26\u201329). Underground mines wireless propagation modeling. Proceedings of the 60th Vehicular Technology Conference, Los Angeles, CA, USA."},{"key":"ref_15","unstructured":"Bandyopadhyay, L., Mishra, P., Kumar, S., and Narayan, A. (2005, January 23\u201329). Radio frequency communication systems in underground mines. Proceedings of the International Seminar on 28th General Assembly of International Union of Radio Science, New Delhi, India."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"84","DOI":"10.1016\/j.phycom.2017.03.002","article-title":"Effect of tunnel geometry and antenna parameters on through-the-air communication systems in underground mines: Survey and open research areas","volume":"23","author":"Hussain","year":"2017","journal-title":"Phys. Commun."},{"key":"ref_17","unstructured":"Chehri, A., Fortier, P., Aniss, H., and Tardif, P.M. (June, January 29). UWB spatial fading and small scale characterization in underground mines. Proceedings of the 23rd Biennial Symposium on Communications, Kingston, ON, Canada."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"434","DOI":"10.1016\/j.ijheatmasstransfer.2016.12.043","article-title":"Time-varying characteristics of electromagnetic radiation during the coal-heating process","volume":"108","author":"Kong","year":"2017","journal-title":"Int. J. Heat Mass Transf."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Zhang, X., and Sarris, C.D. (2018, January 8\u201313). Rigorous statistical modeling of propagation in tunnels with rough surface walls. Proceedings of the 2018 IEEE International Symposium on Antennas and Propagation & USNC\/URSI National Radio Science Meeting, Boston, MA, USA.","DOI":"10.1109\/APUSNCURSINRSM.2018.8608649"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Kanda, M. (1975). Time and amplitude statistics for electromagnetic noise in mines. IEEE Trans. Electromagn. Compat., 122\u2013129.","DOI":"10.1109\/TEMC.1975.303397"},{"key":"ref_21","doi-asserted-by":"crossref","unstructured":"Nath, S., Dey, A., Pachal, P., Sing, J.K., and Sarkar, S.K. (2019). Performance analysis of gas sensing device and corresponding IoT framework in mines. Microsyst. Technol., 1\u20139.","DOI":"10.1007\/s00542-019-04621-x"},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Chehri, A., Fortier, P., and Tardif, P.M. (December, January 27). CTHp1-8: Measurements and modeling of line-of-sight UWB channel in underground mines. Proceedings of the IEEE Globecom 2006, San Francisco, CA, USA.","DOI":"10.1109\/GLOCOM.2006.142"},{"key":"ref_23","doi-asserted-by":"crossref","unstructured":"Zhang, X., and Sarris, C.D. (2018, January 8\u201313). Extending waveguide mode theory based propagation models to arched rough wall tunnels. Proceedings of the 2018 IEEE International Symposium on Antennas and Propagation & USNC\/URSI National Radio Science Meeting, Boston, MA, USA.","DOI":"10.1109\/APUSNCURSINRSM.2018.8608991"},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Ranjany, A., Misraz, P., Dwivediz, B., and Sahuy, H. (2016, January 5\u201310). Channel modeling of wireless communication in underground coal mines. Proceedings of the 2016 8th International Conference on Communication Systems and Networks (COMSNETS), Bangalore, India.","DOI":"10.1109\/COMSNETS.2016.7440023"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"1431","DOI":"10.1109\/LAWP.2016.2561903","article-title":"Modeling and measurement of radio propagation in tunnel environments","volume":"16","author":"Zhou","year":"2016","journal-title":"IEEE Antennas Wirel. Propag. Lett."},{"key":"ref_26","unstructured":"Liu, Y., Wang, C.X., Ghazal, A., Wu, S., and Zhang, W. (2015, January 13\u201317). A multi-mode waveguide tunnel channel model for high-speed train wireless communication systems. Proceedings of the 2015 9th European Conference on Antennas and Propagation (EuCAP), Lisbon, Portugal."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"859","DOI":"10.1007\/s11277-010-0097-2","article-title":"Characterization of the ultra-wideband channel in confined environments with diffracting rough surfaces","volume":"62","author":"Chehri","year":"2012","journal-title":"Wirel. Pers. Commun."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"621","DOI":"10.1007\/s11770-016-0582-9","article-title":"Numerical simulations of full-wave fields and analysis of channel wave characteristics in 3-D coal mine roadway models","volume":"13","author":"Yang","year":"2016","journal-title":"Appl. Geophys."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"1758","DOI":"10.1109\/TCOMM.2010.06.080353","article-title":"Channel modeling and analysis for wireless networks in underground mines and road tunnels","volume":"58","author":"Sun","year":"2010","journal-title":"IEEE Trans. Commun."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"1326","DOI":"10.1109\/8.898765","article-title":"Natural wave propagation in mine environments","volume":"48","author":"Degauque","year":"2000","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"1334","DOI":"10.1364\/AO.15.001334","article-title":"Waveguides: Characteristic modes of hollow rectangular dielectric waveguides","volume":"15","author":"Laakmann","year":"1976","journal-title":"Appl. Opt."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Collin, R. (1991). Field Theory of Guided Waves, Wiley-IEEE Press.","DOI":"10.1109\/9780470544648"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"268","DOI":"10.1137\/0116023","article-title":"Ray theory of reflection from the open end of a waveguide","volume":"16","author":"Yee","year":"1968","journal-title":"SIAM J. Appl. Math."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"790","DOI":"10.1109\/LAWP.2009.2026591","article-title":"Path-loss and time-dispersion parameters of UWB signals in a military airplane","volume":"8","author":"Spiliotopoulos","year":"2009","journal-title":"IEEE Antennas Wirel. Propag. Lett."},{"key":"ref_35","doi-asserted-by":"crossref","unstructured":"Michelson, D.G., and Ghassemzadeh, S.S. (2009). Measurement and modeling of wireless channels. New Directions in Wireless Communications Research, Springer.","DOI":"10.1007\/978-1-4419-0673-1_1"},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"540","DOI":"10.1109\/TAP.2007.913144","article-title":"Radio wave characterization and modeling in underground mine tunnels","volume":"56","author":"Boutin","year":"2008","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"192","DOI":"10.1109\/TAP.1975.1141041","article-title":"Theory of the propagation of UHF radio waves in coal mine tunnels","volume":"23","author":"Emslie","year":"1975","journal-title":"IEEE Trans. Antennas Propag."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"111","DOI":"10.2528\/PIERC16062113","article-title":"MIMO Propagation Measurements in Underground Mine Using Beamforming Butler Matrix Networks","volume":"70","author":"Ghaddar","year":"2016","journal-title":"Prog. Electromagn. 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