{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T13:04:16Z","timestamp":1775912656886,"version":"3.50.1"},"reference-count":14,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2025,2,17]],"date-time":"2025-02-17T00:00:00Z","timestamp":1739750400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Sichuan Science and Technology Program","award":["2023NSFSC0450"],"award-info":[{"award-number":["2023NSFSC0450"]}]},{"name":"Sichuan Science and Technology Program","award":["B17008"],"award-info":[{"award-number":["B17008"]}]},{"name":"111 Project","award":["2023NSFSC0450"],"award-info":[{"award-number":["2023NSFSC0450"]}]},{"name":"111 Project","award":["B17008"],"award-info":[{"award-number":["B17008"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Entropy"],"abstract":"<jats:p>In this work, we consider the waveform design for radar systems based on orthogonal time\u2013frequency space (OTFS). The conditional mutual information (CMI), chosen as a promising metric for assessing the radar cognitive capability, serves as the criterion for OTFS waveform design. After formulating the OTFS waveform design problem based on maximizing CMI, we propose an equivalent waveform processing approach by minimizing the autocorrelation sidelobes and cross-correlations (ASaCC) of the OTFS transmitting matrix. Simulation results demonstrate that superior performance in target information extraction is achieved by the optimized OTFS waveforms compared to random waveforms.<\/jats:p>","DOI":"10.3390\/e27020211","type":"journal-article","created":{"date-parts":[[2025,2,17]],"date-time":"2025-02-17T07:48:22Z","timestamp":1739778502000},"page":"211","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["OTFS Radar Waveform Design Based on Information Theory"],"prefix":"10.3390","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1542-5533","authenticated-orcid":false,"given":"Qilong","family":"Miao","sequence":"first","affiliation":[{"name":"School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ling","family":"Kuang","sequence":"additional","affiliation":[{"name":"School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ge","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yu","family":"Shao","sequence":"additional","affiliation":[{"name":"School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,2,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"136","DOI":"10.1109\/MWC.001.2000408","article-title":"Orthogonal time-frequency space modulation: A promising next-generation waveform","volume":"28","author":"Wei","year":"2021","journal-title":"IEEE Wirel. Commun."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Hadani, R., Rakib, S., Tsatsanis, M., Monk, A., Goldsmith, A.J., Molisch, A.F., and Calderbank, R. (2017, January 19\u201322). Orthogonal time frequency space modulation. Proceedings of the 2017 IEEE Wireless Communications and Networking Conference (WCNC), San Francisco, CA, USA.","DOI":"10.1109\/WCNC.2017.7925924"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"6501","DOI":"10.1109\/TWC.2018.2860011","article-title":"Interference cancellation and iterative detection for orthogonal time frequency space modulation","volume":"17","author":"Raviteja","year":"2018","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Raviteja, P., Phan, K.T., Hong, Y., and Viterbo, E. (2019, January 22\u201326). Orthogonal time frequency space (otfs) modulation based radar system. Proceedings of the 2019 IEEE Radar Conference (RadarConf), Boston, MA, USA.","DOI":"10.1109\/RADAR.2019.8835764"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"5951","DOI":"10.1109\/TWC.2020.2998583","article-title":"On the effectiveness of otfs for joint radar parameter estimation and communication","volume":"19","author":"Gaudio","year":"2020","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Gaudio, L., Kobayashi, M., Bissinger, B., and Caire, G. (2019, January 20\u201324). Performance analysis of joint radar and communication using ofdm and otfs. Proceedings of the 2019 IEEE International Conference on Communications Workshops (ICC Workshops), Shanghai, China.","DOI":"10.1109\/ICCW.2019.8757044"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"2578","DOI":"10.1109\/LCOMM.2023.3303538","article-title":"An otfs-dfrc waveform design method based on phase perturbation","volume":"27","author":"Song","year":"2023","journal-title":"IEEE Commun. Lett."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Hossain, M.N., Sugiura, Y., Shimamura, T., and Ryu, H.-G. (2020, January 26\u201329). Waveform design of low complexity wr-otfs system for the oob power reduction. 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(In Chinese)."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"4072","DOI":"10.1109\/TWC.2021.3055585","article-title":"Receiver design for OTFS with a fractionally spaced sampling approach","volume":"20","author":"Ge","year":"2021","journal-title":"IEEE Trans. Wirel. Commun."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Ge, Y., Meng, L., Gonz\u00e1lez, D., Wen, M., YL, G., and Fan, P. (2024). Linear Precoding Design for OTFS Systems in Time\/Frequency Selective Fading Channels. IEEE Wirel. Commun. Lett.","DOI":"10.1109\/LWC.2024.3524459"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"4788","DOI":"10.1109\/TCOMM.2024.3381725","article-title":"STAR-RIS Aided Integrated Sensing and Communication over High Mobility Scenario","volume":"72","author":"Li","year":"2024","journal-title":"IEEE Trans. Commun."}],"container-title":["Entropy"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1099-4300\/27\/2\/211\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T16:36:08Z","timestamp":1760027768000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1099-4300\/27\/2\/211"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,2,17]]},"references-count":14,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2025,2]]}},"alternative-id":["e27020211"],"URL":"https:\/\/doi.org\/10.3390\/e27020211","relation":{},"ISSN":["1099-4300"],"issn-type":[{"value":"1099-4300","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,2,17]]}}}