Maximization of sum-rate capacity in MU-MIMO Broadcast system with computationally efficient algorithms

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

Physical Communication Pub Date : 2025-03-13 DOI:10.1016/j.phycom.2025.102653

Swadhin Kumar Mishra , Lipsikha Padhy , Arunanshu Mahapatro , Prabina Pattanayak

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引用次数: 0

Abstract

The aim of this paper is to optimize the sum-rate in a wireless system with multiple users and multiple inputs and multiple outputs (MU-MIMO). The optimal value of the channel rate is achieved using the dirty paper coding (DPC) technique. But the DPC is accompanied by a large computational complexity and a requirement for complete channel state information (CSI) at the transmitter. The complexity of the system grows exponentially with the number of users. So, the DPC is practically prohibitive in networks with low latency and high data rate requirements. To achieve near-optimal channel capacity in a MU-MIMO broadcast (BC) system, we apply meta-heuristic optimization methods to select an optimal set of antennas from both the base station (BS) and receiver side. The selection process is accomplished by recently developed arithmetic optimization algorithm (AOA) and golden jackal optimization (GJO) algorithms, and it is seen that these optimization strategies provide almost the same throughput as DPC. Along with that, the computational and temporal complexity of the optimization algorithms is insignificant in comparison to the complexity of DPC. We propose modified versions of the GJO and AOA algorithms and utilize them in the MU-MIMO and also in massive MIMO systems. The results show that, in terms of throughput, the AOA algorithm outperforms the GJO algorithm in the MIMO BC system as well as in massive MIMO system.

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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.