Efficient UAV deployment and resource optimization for enhanced data rates in CDRT-NOMA

IF 2 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Physical Communication Pub Date : 2025-05-01 DOI:10.1016/j.phycom.2025.102696

Kota Nageswara Rao , Kalpana Naidu

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引用次数: 0

Abstract

This paper investigates the integration of unmanned aerial vehicle (UAV) relay-supported coordinated direct and relay transmission non-orthogonal multiple access (CDRT-NOMA) networks to enhance the offloading data rate for diverse user types. The proposed framework aims to improve connectivity for data-intensive users served by ground base stations (GBS) and edge users who lack direct GBS access due to obstacles. To achieve this, we introduce a low-complexity resource allocation algorithm for optimal power distribution at both GBS and UAV relay nodes, a heuristic-based optimization approach for UAV positioning with joint decoding strategy optimization, and a user pairing algorithm to enhance spectral efficiency while mitigating interference in CR-NOMA networks. Comprehensive performance evaluations against an exhaustive optimization benchmark demonstrate that the proposed methods significantly improve data rates and overall system efficiency, validating the effectiveness of UAV-assisted CDRT-NOMA in ensuring efficient resource utilization and seamless connectivity.

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CDRT-NOMA中提高数据速率的高效无人机部署和资源优化

本文研究了无人机中继支持的协调直传和中继传输非正交多址（CDRT-NOMA）网络的集成，以提高不同用户类型的数据卸载速率。提出的框架旨在改善由地面基站（GBS）服务的数据密集型用户和由于障碍而无法直接访问GBS的边缘用户的连通性。为了实现这一目标，我们引入了一种低复杂度的资源分配算法，用于GBS和无人机中继节点的最优功率分配，一种基于启发式的无人机定位优化方法与联合解码策略优化，以及一种用户配对算法，以提高频谱效率，同时减轻CR-NOMA网络中的干扰。针对详尽优化基准的综合性能评估表明，所提出的方法显着提高了数据速率和整体系统效率，验证了无人机辅助CDRT-NOMA在确保高效资源利用和无缝连接方面的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Communication ENGINEERING, ELECTRICAL & ELECTRONICTELECO-TELECOMMUNICATIONS

CiteScore

5.00

自引率

9.10%

发文量

212

审稿时长

55 days

期刊介绍： PHYCOM: Physical Communication is an international and archival journal providing complete coverage of all topics of interest to those involved in all aspects of physical layer communications. Theoretical research contributions presenting new techniques, concepts or analyses, applied contributions reporting on experiences and experiments, and tutorials are published. Topics of interest include but are not limited to: Physical layer issues of Wireless Local Area Networks, WiMAX, Wireless Mesh Networks, Sensor and Ad Hoc Networks, PCS Systems; Radio access protocols and algorithms for the physical layer; Spread Spectrum Communications; Channel Modeling; Detection and Estimation; Modulation and Coding; Multiplexing and Carrier Techniques; Broadband Wireless Communications; Wireless Personal Communications; Multi-user Detection; Signal Separation and Interference rejection: Multimedia Communications over Wireless; DSP Applications to Wireless Systems; Experimental and Prototype Results; Multiple Access Techniques; Space-time Processing; Synchronization Techniques; Error Control Techniques; Cryptography; Software Radios; Tracking; Resource Allocation and Inference Management; Multi-rate and Multi-carrier Communications; Cross layer Design and Optimization; Propagation and Channel Characterization; OFDM Systems; MIMO Systems; Ultra-Wideband Communications; Cognitive Radio System Architectures; Platforms and Hardware Implementations for the Support of Cognitive, Radio Systems; Cognitive Radio Resource Management and Dynamic Spectrum Sharing.