Securing Image Transmission Over AWGN Channels Using OFDM Techniques and Hybrid Chaotic Based Cryptography.
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| Title: | Securing Image Transmission Over AWGN Channels Using OFDM Techniques and Hybrid Chaotic Based Cryptography. |
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| Authors: | Radhi, Hussein Y.1 ali.j.abboud@gmail.com, Abboud, Ali J.1, Yousif, Sura F.2 |
| Source: | Iraqi Journal for Electrical & Electronic Engineering. Jun2026, Vol. 22 Issue 1, p183-198. 16p. |
| Subjects: | Image transmission, Data encryption, Additive white Gaussian noise channels, Bit error rate, Orthogonal frequency division multiplexing, Signal-to-noise ratio, Cryptography, Information technology security |
| Abstract (English): | The security of communications in various transmitted information’s forms such as video, audio, image, and even text and preserving them from attackers has become of great importance in the age of the Internet and cellular networks. Perhaps one of the most important media used to transmit information is digital images. They are distinguished from video and audio by their lack of complexity, and at the same time they are distinguished from text by the possibility of containing more information. Due to the necessity of transmitting huge amounts of information via digital images through additive white Gaussian noise (AWGN) channels for various applications. This transmission of images over unsecured channels is vulnerable to many attacks that must be protected by information security tools. In this research, a hybrid chaos-based system was developed to encrypt and secure images and send them via an orthogonal frequency division multiplexing (OFDM) channel, which leads to transferring large amounts of transmitted information in a short time, with very little interference between the data, and maintaining the transfer rate. Two chaotic techniques, Rossler and Modified Chau system, are used together to create a secret encryption key. This combination of chaotic systems provides highly random sensitive keys with amplitude of 10252 that are difficult to predict by the attacker and which makes restoring the original image very difficult in the event of a very small change in the chaotic parameters. Many tests were conducted to determine the strength of the proposed system, including statistical and differential analysis and entropy to verify the strength of the image security approach, in addition to applying some types of attacks to the encrypted image, such as noise and cropping different parts of the image. It is clear that the proposed scheme has strong immunity to these attacks. This was proven by the comparative experimental results. The entropy ratio was very excellent compared to the rest of the results obtained in the rest of the research. This was also the case with the values of (NPCR), (UACI), (NPCR), and Mean Square Error (MSE) was also very good as compared with other researches in the literature. The proposed security approach for OFDM gave a low link and a low bit error rate. And a higher signal-to-noise ratio (PSNR). [ABSTRACT FROM AUTHOR] |
| Abstract (Arabic): | يركز المقال على طريقة تشفير هجينة تعتمد على الفوضى (الكايُوس) مدمجة مع تقنيات تقسيم التردد المتعامد (OFDM) لتأمين نقل الصور الرقمية عبر قنوات الضوضاء البيضاء الغاوسية المضافة (AWGN). يستخدم النظام المقترح نظامين فوضويين، وهما نظام روسلر (Rossler) ونظام تشاو المعدل (Chau المعدل)، لتوليد مفاتيح تشفير حساسة وكبيرة الحجم، مما يعزز الأمان ويجعل استرجاع الصور بدون تصريح أمراً صعباً. تُظهر النتائج التجريبية مقاومة قوية ضد الهجمات الإحصائية، والهجمات التفاضلية، والهجمات القائمة على الضوضاء، مع مؤشرات أداء إيجابية مثل الإنتروبيا، ومعدل تغير عدد البكسلات (NPCR)، ومتوسط شدة التغير الموحد (UACI)، ومتوسط الخطأ التربيعي (MSE)، ونسبة الذروة إلى الضوضاء (PSNR)، ومعدل خطأ البت المنخفض (BER). يساهم دمج تقنية OFDM في تحسين جودة الإرسال من خلال تقليل التداخل والحفاظ على معدلات بيانات عالية. بشكل عام، تقدم هذه الطريقة حلاً قوياً وفعالاً لنقل الصور بشكل آمن في بيئات الاتصالات المليئة بالضوضاء. [Extracted from the article] |
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| Database: | Engineering Source |
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