مقاوم سازی الگوریتم شکل دهی پرتو
الموضوعات :
سجاد دهقانی
1
,
ناصر پرهیزگار
2
1 - دانشگاه آزاد اسلامی واحد علوم و تحقیقات فارس
2 - دانشکده مهندسی برق- واحد شیراز، دانشگاه آزاد اسلامی، شیراز، ایران
الکلمات المفتاحية: عدم قطعیت, مقاوم سازی, Convex Optimization, شکل دهنده پرتو حداقل واریانس با پاسخ بدون اعوجاج,
ملخص المقالة :
عملکرد الگوریتم‌های شکل‌دهی پرتو در شرایط عدم قطعیت در بردار هدایت و یا در ماتریس کوواریانس داده، به شدت خراب می‌شوند. در این مقاله یک روش جدید برای مقاوم سازی الگوریتم شکل‌دهی پرتو وفقی حداقل واریانس ارائه می‌شود که هم نسبت به عدم قطعیت در بردار هدایت و هم نسبت به عدم قطعیت در ماتریس کوواریانس داده مقاوم می‌باشد. این روش شامل حداقل‌سازی یک مسأله بهینه سازی با تابع هزینه مرتبه دوم و قید غیر محدب است. در این مقاله نشان داده خواهد شد که مسأله بهینه سازی غیر محدب به یک مسأله محدب تبدیل شده و بردار وزن شکل دهنده پرتو مقاوم سازی شده به دست می‌آید.
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