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بررسی تأثیر کانالهای فیدینگ صاف بر عملکرد حالت دائم شبکههای تطبیقی با مشارکت نفوذی | ||
پردازش سیگنال پیشرفته | ||
مقاله 3، دوره 1، شماره 1، اسفند 1395، صفحه 27-34 اصل مقاله (916.69 K) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22034/jasp.2017.5530 | ||
نویسندگان | ||
اعظم خلیلی* 1؛ امیر رستگارنیا1؛ وحید وحیدپور1؛ توحید یوسفی رضایی2 | ||
1دانشگاه ملایر - گروه مهندسی برق | ||
2دانشگاه تبریز - دانشکده مهندسی برق و کامپیوتر | ||
چکیده | ||
شبکههای تطبیقی نفوذی به عنوان روشی قدرتمند برای حل مسائل مربوط به تخمین توزیعشده شناخته میشوند. نتایج موجود بیانگر آن است که در صورت ایدهآل بودن ارتباط بین گرههای شبکه، الگوریتمهای مبتنی بر شبکه تطبیقی نفوذی برای حل مسئله تخمین یک راهحل کاملاً کارآمد میباشند. بااینحال، فرض ایدهآل بودن لینکهای بین گرههای شبکه در عمل چندان دقیق نیست. در این مقاله به بررسی تأثیر کانالهای فیدینگ صاف بر روی عملکرد حالت دائمی شبکههای تطبیقی با مشارکت نفوذی میپردازیم. بدین منظور از روش موسوم به بقای انرژی استفاده کرده و رفتار حالت دائم شبکه را برحسب معیارهای MSD و EMSE به دست میآوریم. همچنین محدوده پایداری شبکه برحسب بازه ضریب گام را به دست میآوریم. روابط بهدستآمده نشان میدهد که برخلاف شبکه ایدهآل، با کاهش مقدار ضریب گام، مقدار نهایی خطا (خطای حالت دائم) افزایش مییابد. همچنین صحت روابط تئوری بهدستآمده را با نتایج حاصل از شبیهسازی بررسی مینماییم. | ||
کلیدواژهها | ||
شبکههای تطبیقی نفوذی؛ تخمین توزیعشده؛ حالت دائم؛ کانال فیدینگ | ||
مراجع | ||
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