HEBE Optimized Mob-LSTM for Channel Estimation in RIS-Assisted mmWave MIMO System

IF 1.7 4区 计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC International Journal of Communication Systems Pub Date : 2024-12-26 DOI:10.1002/dac.6071
N. Durga Naga Lakshmi, B. Vijaya Lakshmi
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Abstract

Channel acquisitions are one of the most significant challenges to implementing reconfigurable intelligent surface (RIS)–assisted wireless networks. Basically, the base station (BS) and the mobile station (MS) are connected to one another via the RIS. However, accurate channel state information for each individual channel is required for the RIS to perform at its highest level. Therefore, effective execution of superresolution channel estimation (CE) at the BS to RIS, RIS to MS, and composed channel is necessary. Hence, this research proposed the MobileNet–long short-term memory (Mob-LSTM) technique for the RIS-aided mmWave MIMO system in order to provide an accurate CE model. In this research, three types of channels were initially developed: BS to RIS, RIS to MS, and composed channel. After that, these three types of channel parameters are estimated with the aid of the proposed Mob-LSTM model. Additionally, this research utilized a sequential weighting method, namely, a hybrid extended bald eagle (HEBE) optimizer, for fine-tuning the hyperparameters of the Mob-LSTM. Furthermore, the proposed research is implemented and examined using the MATLAB tool. In the simulation scenario, the proposed method can outperform the various existing approaches in terms of normalized mean square error (NMSE) and mean square error (MSE). Additionally, four different scenarios have been used to assess the proposed approach's efficiency: path gain analysis and convergence analysis of Mob-LSTM, MSE, and NMSE measures. According to the simulation outcomes, the suggested method attains a lower NMSE value of −52.53 and exceeds the existing techniques with high-CE effectiveness.

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来源期刊
CiteScore
5.90
自引率
9.50%
发文量
323
审稿时长
7.9 months
期刊介绍: The International Journal of Communication Systems provides a forum for R&D, open to researchers from all types of institutions and organisations worldwide, aimed at the increasingly important area of communication technology. The Journal''s emphasis is particularly on the issues impacting behaviour at the system, service and management levels. Published twelve times a year, it provides coverage of advances that have a significant potential to impact the immense technical and commercial opportunities in the communications sector. The International Journal of Communication Systems strives to select a balance of contributions that promotes technical innovation allied to practical relevance across the range of system types and issues. The Journal addresses both public communication systems (Telecommunication, mobile, Internet, and Cable TV) and private systems (Intranets, enterprise networks, LANs, MANs, WANs). The following key areas and issues are regularly covered: -Transmission/Switching/Distribution technologies (ATM, SDH, TCP/IP, routers, DSL, cable modems, VoD, VoIP, WDM, etc.) -System control, network/service management -Network and Internet protocols and standards -Client-server, distributed and Web-based communication systems -Broadband and multimedia systems and applications, with a focus on increased service variety and interactivity -Trials of advanced systems and services; their implementation and evaluation -Novel concepts and improvements in technique; their theoretical basis and performance analysis using measurement/testing, modelling and simulation -Performance evaluation issues and methods.
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