Optimization algorithm for energy efficiency in vehicular heterogeneous VLC/RF systems based on channel estimation

IF 3 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2025-03-27 DOI:10.1016/j.aeue.2025.155769

Hao Qin , RongRong Yin , MengFa Zhai , KuanKuan Jia , MingQi He , Chun Lang , ShaoYing Ma

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引用次数: 0

Abstract

Since Visible Light Communication (VLC) is significantly affected by dynamic channel variations and outdated Channel State Information (CSI), traditional resource allocation methods for heterogeneous VLC/RF systems face challenges in optimizing Energy Efficiency (EE) under such dynamic conditions. To address this issue, this paper proposes a channel estimation method combining Kalman filtering and Minimum Mean Squared Error (MMSE), enabling more accurate estimation of the VLC channel. Based on the channel estimation, we design a Distributed Iterative Joint Channel and Power Optimization (DIJCPO) algorithm for RF/VLC heterogeneous communication systems to maximize EE under dynamic channel conditions. Simulation results demonstrate that the EE performance of the proposed method significantly outperforms that of the comparison algorithms in both curved and straight road scenarios. Moreover, an optimal turning radius further enhances system EE, offering a novel solution for EE optimization in heterogeneous vehicular communication systems.

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基于信道估计的车载异构VLC/RF系统能效优化算法

由于可见光通信（VLC）受动态信道变化和过时的信道状态信息（CSI）的显著影响，传统的异构VLC/RF系统资源分配方法在这种动态条件下面临优化能效（EE）的挑战。针对这一问题，本文提出了一种结合卡尔曼滤波和最小均方误差（MMSE）的信道估计方法，可以更准确地估计VLC信道。在信道估计的基础上，针对RF/VLC异构通信系统，设计了一种分布式迭代联合信道与功率优化（DIJCPO）算法，以实现动态信道条件下的EE最大化。仿真结果表明，该方法在弯曲和直路场景下的EE性能都明显优于比较算法。此外，最优转弯半径进一步提高了系统能效，为异构车载通信系统能效优化提供了一种新的解决方案。

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

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.