تحسين نسبة الإشارة إلى الضجيج في أنظمة الاتصالات ذات تجميع التقسيم الترددي البصري

Authors

  • مخائيل سليم مخول

Abstract

تتضمن مقالتنا تحليل التأثيرات الحرارية على أداء نُظم الاتصالات ذات تجميع التقسيم الترددي (OFDM) البصرية التقليدية، و تقدم تعريفاً و مخططاً صندوقياً لنظام اتصال OFDM مُقترح جديد.

من خلال دراستنا الرياضية، التحليلية و الحسابية، وجدنا أن:

  1. النظام FM/IM OFDM المُقترح الجديد أكثر حساسية بالإشارة المُستقبلة من مُستقبلات النظام التقليدي OFDM.
  2. عند عمل كلا النظامين FM/IM OFDM المُقترح الجديد و التقليدي عند ذات العوامل، كانت عموماً نسبة استطاعة الإشارة المُفيدة إلى الضجيج في النظام FM/IM OFDM المُقترح الجديد أفضل مما كانت علية في النظام التقليدي FM/IM OFDM.
  3. النظام FM/IM OFDM المُقترح الجديد قليل التأثر بالضجيج الحراري، و يعمل بأداء جيد عند درجات حرارة عالية مُقارنة بنظام الكشف التقليدي FM/IM OFDM.

Our paper contains analysis of the temperatures effects on the performance of the Traditional FM/IM OFDM Communication System, and offers a new definition of the block diagram to the new suggested FM/IM OFDM system. From mathematical analysis, and computation of the new and Traditional techniques, we found:

  1. 1. The new suggested System potentially offers improved receiver sensitivity more than Traditional Communication techniques.
  2. 2. When the new and Traditional FM/IM OFDM Communication techniques work at the same parameters, SNR in The new coherent FM/IM OFDM Communication System is usually better than Traditional Coherent FM/IM OFDM Communication techniques.
  3. 3. The new suggested System does not have effects by a thermal noise, and stability works at the high temperatures comparatively with Traditional FM/IM OFDM system.

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Published

2019-01-30

How to Cite

1.
مخول مس. تحسين نسبة الإشارة إلى الضجيج في أنظمة الاتصالات ذات تجميع التقسيم الترددي البصري. Tuj-eng [Internet]. 2019Jan.30 [cited 2025Apr.13];32(6). Available from: https://journal.tishreen.edu.sy/index.php/engscnc/article/view/7255

Issue

Vol. 32 No. 6 (2010): العلوم الهندسية

Section

Articles

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