بهبود امنیت در شبکه‌های ارتباطی خطوط انتقال قدرت با استفاده از تکنیک دسترسی چندگانه تقسیم فرکانسی متعامد در حضور چند کاربر و شنودگر

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار دانشکده مهندسی فناوری های نوین، دانشگاه تخصصی فناوریهای نوین آمل، آمل، ایران.

2 کارشناسی ارشد شبکه های مخابراتی، دانشکده مهندسی فناوری های نوین، دانشگاه تخصصی فناوری های نوین آمل، آمل، ایران

10.22091/jemsc.2025.11503.1212

چکیده

در عصر حاضر، با توجه به رشد سریع فناوری‌های ارتباطی و نیاز به شبکه‌های هوشمند، تکنیک‌های نوینی مانند ارتباط از طریق خطوط برق و تقسیم فرکانسی متعامد به ‌عنوان راهکارهای مؤثری برای بهبود امنیت انتقال داده‌ها و کاهش هزینه‌های زیرساختی معرفی شده‌اند. این مقاله به بررسی سیستم‌های ارتباطی مبتنی بر خطوط برق با استفاده از تکنیک‌های دسترسی چندگانه تقسیم فرکانسی متعامد که در مدیریت شبکه نقش حیاتی دارند، پرداخته و هدف آن افزایش امنیت انتقال داده‌ها و کاهش تأثیرات تداخل است. به منظور ارزیابی مدل سیستم پیشنهادی یک مسئله بهینه‌ساز پیشنهاد داده و با استفاده از مدل‌های بهینه‌سازی ریاضی و ابزارهای NOMAD و CVX در متلب، به تحلیل و ارزیابی پارامترهای مؤثر بر عملکرد سیستم از جمله تعداد زیرحامل‌ها و کاربران، فاصله، محدودیت‌های نرخ داده، توان کل و نویز پرداخته شده‌است. علاوه‌براین، برای بررسی جامع سیستم پیشنهادی، حداقل نرخ امن مورد نیاز کاربران را نیز در حضور شنودگر مورد بررسی قرار می‌دهیم.

کلیدواژه‌ها

عنوان مقاله [English]

Improving Security in Power Line Communication Networks Using OFDMA Technique in the Presence of Multiple Users and Eavesdroppers

نویسندگان [English]

  • Moslem Forouzesh 1
  • Reza Aghaei 2
  • Arshia Rangamiz 2
1 Assistant Professor, Electrical Engineering Department, Faculty of Modern Technologies Engineering, Amol University of Special Modern Technologies, Amol, Iran
2 MSc. Student of Telecommunication Network Engineering, Faculty of Modern Technologies Engineering, Amol University of Special Modern Technologies, Amol, Iran
چکیده [English]

In the present era, given the rapid growth of communication technologies and the need for smart networks, novel techniques such as Power Line Communication (PLC) and Orthogonal Frequency Division Multiplexing (OFDM) have been introduced as effective solutions for improving data transmission security and reducing infrastructure costs. This paper examines communication systems based on power lines using Orthogonal Frequency Division Multiple Access (OFDMA) techniques, which play a crucial role in network management, with the aim of enhancing data transmission security and minimizing interference effects. To evaluate the proposed system model, an optimization problem is formulated and analyzed using mathematical optimization models and the NOMAD and CVX tools in MATLAB. The analysis focuses on key performance parameters, including the number of subcarriers and users, distance, data rate constraints, total power, and noise. Therefore, to analyze the proposed system model, comprehensively, we investigate the minimum required secrecy rate for users in the presence of eavesdroppers. The optimization results demonstrate a significant improvement in the performance of PLC-based communication systems and an increase in data transmission rates.

کلیدواژه‌ها [English]

  • Convex optimization
  • Orthogonal frequency division multiple access
  • power line communication
  • Data transmission rates
  • Secrecy rate

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