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The book cannot be previewed or downloaded in order to preserve the copyright of the author and publishing house
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| Author: | William C.Y. Lee |
| Category: | Computer Design [Edit] |
| Language: | Arabic |
| Publisher: | المركز العربي للتعريب والترجمة والتأليف والنشر |
| Release Date: | 01 Jan 1993 |
| Pages: | 480 |
| Rank: | 309,805 No 1 most popular |
| Short link: | Copy |
| More books like this book | |
يشرح هذا الكتاب الاشارات الراديوية و طرائق تمثيلها و مسبباتها و تصنيف القنوات و المصطلحات و استعمالاتها. و التنبؤ بخسارة الانتشار و فلسفته وكيفية الحصول على معطيات الانتشار المفيدة. و يعالج الخفوتات و حساباتها. و يعالج موضوع التداخل في الاتصالات الراديوية المتنقلة. و يشرح خطط الترددات و مخططاتها المرافقة و يبحث موضوع تعدد القنوات بالتقسيم الترددي و الزمني ونشر الطيف و القفز الترددي. و يبحث معلمات التصميم و عناصره الأساسية. و يعالج موضوع التشوير و بلوغ القناة. و يبحث تقنية تعدد المنافذ بالتقسيم المرمزفي النظام الخلوي. و يشرح أنظمة الخلايا الصغرية و أنواعها و سعاتها و جودة الصوت فيها. و يستعرض أخيراً نظم الاتصالات المختلفة ذات العلاقة كخدمة الاتصالات الشخصية و نظم الهاتف المحمول و الاتصالات من الجو الى الأرض و نظام الاتصالات المتنقلة الأرضية بواسطة السواتل.
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