{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T20:38:15Z","timestamp":1769114295091,"version":"3.49.0"},"reference-count":33,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T00:00:00Z","timestamp":1768953600000},"content-version":"vor","delay-in-days":20,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Computer Networks and Communications"],"published-print":{"date-parts":[[2026,1]]},"abstract":"<jats:p>The sixth generation (6G) wireless networks are used to provide a large coverage, and also this generation needed to support different emerging applications in harsh areas with higher user equipment mobility. For the above case, a new modulation technique called orthogonal time\u2013frequency space (OTFS) modulation has emerged as a promising technique to mitigate the challenges in higher\u2010Doppler channels. It is a two\u2010dimensional modulation scheme in which information symbols are encoded in the delay\u2010Doppler domain. For this case, the channel is also implemented in the delay\u2010Doppler domain. In this study, we investigate channel estimation and signal detection of OTFS for the case of fractional Doppler channels with lower computational complexity using pilot\u2010based iterative path estimation and maximum ratio combining (MRC) signal detection. We simulate the error rate performance of the investigated channel estimation and signal detection in a fractional Doppler shift. And also, we simulate the average iteration performance, indicating the complexity in terms of the number of iterations needed to detect the signal.<\/jats:p>","DOI":"10.1155\/jcnc\/8837627","type":"journal-article","created":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T04:26:21Z","timestamp":1769055981000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Pilot\u2010Based Iterative Path Estimation and Maximum Ratio Combining (MRC)\u2013Based Signal Detection of Orthogonal Time\u2013Frequency Space (OTFS) Modulation for 6G in Fractional Doppler Channels"],"prefix":"10.1155","volume":"2026","author":[{"given":"Ephrem Gelamite","family":"Demere","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6096-3333","authenticated-orcid":false,"given":"Zelalem Hailu","family":"Gebeyehu","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2026,1,21]]},"reference":[{"key":"e_1_2_9_1_2","doi-asserted-by":"publisher","DOI":"10.1007\/s11432-017-9262-8"},{"key":"e_1_2_9_2_2","doi-asserted-by":"publisher","DOI":"10.1109\/comst.2018.2844322"},{"key":"e_1_2_9_3_2","doi-asserted-by":"crossref","unstructured":"HuY.et al. Massive Random Access in Cell-Free Massive MIMO Systems for High-Speed Mobility with OTFS Modulation 2024 https:\/\/arxiv.org\/html\/2409.01111v1.","DOI":"10.1109\/TMC.2025.3615587"},{"key":"e_1_2_9_4_2","first-page":"1","volume-title":"2017 Xxxiind General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)","author":"Zheng Q.","year":"2017"},{"key":"e_1_2_9_5_2","doi-asserted-by":"crossref","first-page":"1012","DOI":"10.1109\/PIMRC.2002.1045180","volume-title":"The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications","author":"Schafhuber D.","year":"2002"},{"key":"e_1_2_9_6_2","volume-title":"2017 IEEE Wireless Communications and Networking Conference (WCNC)","author":"Hadani R.","year":"2017"},{"key":"e_1_2_9_7_2","doi-asserted-by":"publisher","DOI":"10.1109\/tcomm.2021.3051386"},{"key":"e_1_2_9_8_2","doi-asserted-by":"publisher","DOI":"10.23919\/jcc.2022.03.008"},{"key":"e_1_2_9_9_2","doi-asserted-by":"publisher","DOI":"10.1109\/tvt.2018.2878891"},{"key":"e_1_2_9_10_2","doi-asserted-by":"publisher","DOI":"10.1109\/tvt.2019.2906357"},{"key":"e_1_2_9_11_2","doi-asserted-by":"publisher","DOI":"10.1109\/twc.2019.2909205"},{"key":"e_1_2_9_12_2","volume-title":"2018 Information Theory and Applications Workshop (ITA)","author":"Murali K. R.","year":"2018"},{"key":"e_1_2_9_13_2","doi-asserted-by":"crossref","unstructured":"GongZ. LiuS. andHuangY. Doppler Diversity Reception for OTFS Modulation 2022 IEEE 95th Vehicular Technology Conference 2022 VTC2022-Spring Helsinki 1\u20135 https:\/\/doi.org\/10.1109\/VTC2022-Spring54318.2022.9860675.","DOI":"10.1109\/VTC2022-Spring54318.2022.9860675"},{"key":"e_1_2_9_14_2","doi-asserted-by":"publisher","DOI":"10.1109\/VTC2022-Spring54318.2022.9860629"},{"key":"e_1_2_9_15_2","doi-asserted-by":"crossref","unstructured":"Zelalem HailuG.andEphrem GelamiteD. Pilot-Based Iterative Path Estimation and Maximum Ratio Combining (MRC)-Based Signal Detection of Orthogonal Time Frequency Space (OTFS) Modulation for 6G in Fractional Doppler Channels 2023 https:\/\/ssrn.com\/abstract=4607105 https:\/\/doi.org\/10.2139\/ssrn.4607105.","DOI":"10.2139\/ssrn.4607105"},{"key":"e_1_2_9_16_2","doi-asserted-by":"publisher","DOI":"10.1049\/el.2019.2503"},{"key":"e_1_2_9_17_2","doi-asserted-by":"crossref","first-page":"581","DOI":"10.1109\/LWC.2019.2960779","article-title":"Intelligent Reflecting Surfaces: Physics, Propagation, and Pathloss Modeling","volume":"9","author":"\u00d6zdogan \u00d6.","year":"2019","journal-title":"IEEE Wireless Communications Letters"},{"key":"e_1_2_9_18_2","doi-asserted-by":"publisher","DOI":"10.1109\/tvt.2021.3071942"},{"key":"e_1_2_9_19_2","doi-asserted-by":"publisher","DOI":"10.1049\/iet-com.2019.0376"},{"key":"e_1_2_9_20_2","doi-asserted-by":"publisher","DOI":"10.1109\/tsp.2019.2919411"},{"key":"e_1_2_9_21_2","doi-asserted-by":"publisher","DOI":"10.1109\/access.2020.3046487"},{"key":"e_1_2_9_22_2","doi-asserted-by":"crossref","unstructured":"RamachandranM. 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