تحلیل خاموشی و گذردهی شبکه‌های رله تقویت و ارسال رادیو شناختی دوجهتی با انتقال توان بی‌سیم
الموضوعات :
1 - عضو هیئت علمی دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان، ایران
الکلمات المفتاحية: رله تقويت و ارسال, شبكه راديو شناختي, برداشت انرژي, انتقال توان بي‌سيم, رله دو جهته,
ملخص المقالة :
رادیو شناختی فناوری امیدبخشی است که هدف آن دست‌یابی به بهره‌برداری بهتر از طیف فرکانسی است. از طرف دیگر، برداشت انرژی بی‌سیم می‌تواند ملزومات انرژی بسیار زیاد گره‌ها را تامین کند. در این مقاله، دو سناریو در یک شبکه دوراهه فرض شده‌اند که در اولی رله انرژی مورد نیازش را از دو منبع شبکه ثانویه و در دومی هر دوی منابع، انرژی را از رله شبکه ثانویه برداشت می‌کنند. هر دوی محوشدگی ناکاگامی ناشی از انتشار سیگنال و تداخل روی رله ناشی از کاربران اولیه شبکه رادیو شناختی در نظر گرفته می‌شوند. روابط به فرم بسته‌ای برای احتمال خاموشی و گذردهی شبکه رله تقویت و ارسال رادیو شناختی با بکارگیری روش‌های برداشت انرژی و انتقال توان بی‌سیم روی کانال‌های محوشدگی مستقل و ناهمسان ناکاگامی ارائه شده است. روابط تحلیلی با شبیه سازی مونت كارلو صحت سنجي شده‌اند و نشان داده شده است كه سناريوي اول همواره نسبت به دومي عملكرد بهتري دارد و هر دو سناريو عملكرد بهتري را نسبت به حالت بدون برداشت انرژي دارند.
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