بررسی عمل‌کرد فیلتر دو بعدی با پاسخ فرکانسی بی‌نهایت در شکل‌دهی رقمی پرتو

نویسندگان

1 دانشگاه علوم دریایی امام‌خمینی‌(ره) نوشهإ

2 دانشگاه علوم دریایی امام‌خمینی‌(ره) نوشهر

چکیده

برای انجام فیلتر باندگذر جهت‌دار بر سیگنال موج صفحه‌ای زمان- فضا باندپهن در فرکانس رادیویی از الگوریتم‌های شکل‌دهی پرتو رقمی باندپهن استفاده می‌شود. در این مقاله فیلتر دوبعدی با پاسخ ضربه بی‌نهایت پیشنهاد شده است و از شبیه‌سازی Monte Carlo برای آنتن 16 عنصری استفاده شده است تا فیلتر پیشنهادی را با شکل‌دهنده پرتو تغذیه آرایه فازی در عمل‌کرد نرخ خطای بیت در سیگنال با بهره متفاوت بررسی گردد. نتایج نشان دهنده عمل‌کرد مطلوب فیلتر پیشنهادی 2-D IIR می‌باشد و برتری آن، پیچیدگی مداری کمتر نسبت به نوع FIR (مرتبه 2 در برابر مرتبه 32) و پیچیدگی محاسباتی کمتر نسبت به شکل دهنده پرتو تغذیه آرایه فازی (تعداد ضرب کننده و جمع کننده کمتر برای پیاده سازی)، در عمل‌کرد یکسان می‌باشد که منجر به بلادرنگی و مصرف توان نسبتا کمتر می‌شود.     .

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Synthesis of 2-D IIR Filter Performance in Digital Beam Forming

نویسندگان [English]

  • M. Aghababaei 1
  • M. Abdollahi 2
چکیده [English]

Digital wideband beam forming algorithm has been used to directionally band pass filtering on wideband Space-Time Plane Wave signal in Radio Frequency. In this letter 2-D Infinite Impulse Response filter purposed and do Monte-Carlo simulation with 16 array antenna to compare bit error ratio between that and digital Phased Array Feed. Results are shown better performance for purposed 2-D IIR filter and that's benefits are lower circuitry complex to FIR filter (order 2 against to order 32) and lower computing complex to digital phased array feed (less number of adder and multiplier) in same result. So that has real time performance and low power consumption.      

کلیدواژه‌ها [English]

  • 2-D IIR Filter
  • Space-Time Plane Wave signal
  • digital Phased Array Feed (PAF)

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