An Efficient Sum-Rate Maximization Algorithm for Fluid Antenna-Assisted ISAC System

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2024-12-03 DOI:10.1109/LCOMM.2024.3510334

Qian Zhang;Mingjie Shao;Tong Zhang;Gaojie Chen;Ju Liu;P. C. Ching

{"title":"An Efficient Sum-Rate Maximization Algorithm for Fluid Antenna-Assisted ISAC System","authors":"Qian Zhang;Mingjie Shao;Tong Zhang;Gaojie Chen;Ju Liu;P. C. Ching","doi":"10.1109/LCOMM.2024.3510334","DOIUrl":null,"url":null,"abstract":"This letter investigates a fluid antenna (FA)-assisted integrated sensing and communication (ISAC) system, with joint antenna position optimization and waveform design. We consider enhancing the sum-rate maximization (SRM) and sensing performance with the aid of FAs. Although the introduction of FAs brings more degrees of freedom for performance optimization, its position optimization poses a non-convex programming problem and brings great computational challenges. This letter contributes to building an efficient design algorithm by the block successive upper bound minimization and majorization-minimization principles, with each step admitting closed-form update for the ISAC waveform design. In addition, the extrapolation technique is exploited further to speed up the empirical convergence of FA position design. Simulation results show that the proposed design can achieve state-of-the-art sum-rate performance with at least 60% computation cutoff compared to existing works with successive convex approximation (SCA) and particle swarm optimization (PSO) algorithms.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"29 1","pages":"200-204"},"PeriodicalIF":3.7000,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10772590/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}

引用次数: 0

Abstract

This letter investigates a fluid antenna (FA)-assisted integrated sensing and communication (ISAC) system, with joint antenna position optimization and waveform design. We consider enhancing the sum-rate maximization (SRM) and sensing performance with the aid of FAs. Although the introduction of FAs brings more degrees of freedom for performance optimization, its position optimization poses a non-convex programming problem and brings great computational challenges. This letter contributes to building an efficient design algorithm by the block successive upper bound minimization and majorization-minimization principles, with each step admitting closed-form update for the ISAC waveform design. In addition, the extrapolation technique is exploited further to speed up the empirical convergence of FA position design. Simulation results show that the proposed design can achieve state-of-the-art sum-rate performance with at least 60% computation cutoff compared to existing works with successive convex approximation (SCA) and particle swarm optimization (PSO) algorithms.

查看原文本刊更多论文

流体天线辅助ISAC系统的有效和速率最大化算法

本文研究了一种流体天线（FA）辅助集成传感与通信（ISAC）系统，该系统具有联合天线位置优化和波形设计。我们考虑借助FAs来增强和速率最大化（SRM）和传感性能。FAs的引入虽然为性能优化带来了更大的自由度，但其位置优化是一个非凸规划问题，带来了巨大的计算挑战。本文通过块连续上界最小化和最大化最小化原则构建了一种高效的设计算法，每一步都允许ISAC波形设计的封闭形式更新。此外，进一步利用外推技术加快了FA位置设计的经验收敛速度。仿真结果表明，与现有的连续凸近似（SCA）和粒子群优化（PSO）算法相比，所提出的设计可以达到最先进的和速率性能，计算截断率至少为60%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. 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 communication systems.