{"title":"On Optimal Power Control for Cognitive Satellite-Terrestrial Systems","authors":"Bohai Li;Jihong Park;Jinho Choi","doi":"10.1109/LWC.2024.3443101","DOIUrl":null,"url":null,"abstract":"In the next generation of terrestrial systems (e.g., 6th generation (6G)), the Ku- and Ka-bands are expected to be utilized, much like their usage in low Earth orbit (LEO) satellite communications (SATCOM). Consequently, cognitive LEO-terrestrial systems have emerged as a key focus of recent advancements to address the spectrum scarcity problem in future wireless communications. This letter focuses on power control for cognitive LEO-terrestrial systems. Specifically, we study an optimal power control scheme for LEO ground users (GUs) to maximize the LEO system throughput while limiting the harmful interference to terrestrial base stations (BSs). Unlike previous literature that studied this problem in a sub-optimal manner, our work provides an optimal solution while considering more realistic channel models. Numerical results demonstrate the performance disparities between our optimal scheme and the existing sub-optimal scheme.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"13 10","pages":"2737-2741"},"PeriodicalIF":5.5000,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Wireless Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10634876/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
In the next generation of terrestrial systems (e.g., 6th generation (6G)), the Ku- and Ka-bands are expected to be utilized, much like their usage in low Earth orbit (LEO) satellite communications (SATCOM). Consequently, cognitive LEO-terrestrial systems have emerged as a key focus of recent advancements to address the spectrum scarcity problem in future wireless communications. This letter focuses on power control for cognitive LEO-terrestrial systems. Specifically, we study an optimal power control scheme for LEO ground users (GUs) to maximize the LEO system throughput while limiting the harmful interference to terrestrial base stations (BSs). Unlike previous literature that studied this problem in a sub-optimal manner, our work provides an optimal solution while considering more realistic channel models. Numerical results demonstrate the performance disparities between our optimal scheme and the existing sub-optimal scheme.
在下一代地面系统（如第六代（6G））中，Ku 波段和 Ka 波段预计将得到使用，这与它们在低地球轨道（LEO）卫星通信（SATCOM）中的使用情况非常相似。因此，认知低地轨道-地面系统已成为近期解决未来无线通信频谱稀缺问题的重点。这封信的重点是认知低地轨道-地面系统的功率控制。具体来说，我们研究了低地轨道地面用户（GU）的最优功率控制方案，以最大限度地提高低地轨道系统的吞吐量，同时限制对地面基站（BS）的有害干扰。与以往以次优方式研究该问题的文献不同，我们的研究在考虑更现实的信道模型的同时，提供了一个最优解决方案。数值结果表明了我们的最优方案与现有次优方案之间的性能差异。
期刊介绍：
IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of wireless communication systems.
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