کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
465797 697694 2015 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Design and implementation of spectrum sensing for cognitive radios with a frequency-hopping primary system
ترجمه فارسی عنوان
طراحی و پیاده سازی حسگر طیف برای رادیوهای شناختی با یک سیستم اولیه فرکانس بالا
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
چکیده انگلیسی

In this work, spectrum sensing for cognitive radios is considered in the presence of multiple Primary Users (PU) using frequency-hopping communication over a set of frequency bands. The detection performance of the Fast Fourier Transform (FFT) Average Ratio (FAR) algorithm is obtained in closed-form, for a given FFT size and number of PUs. The effective throughput of the Secondary Users (SU) is formulated as an optimization problem with a constraint on the maximum allowable interference on the primary network. Given the hopping period of the PUs, the sensing duration that maximizes the SU throughput is derived. The results are validated using Monte Carlo simulations. Further, an implementation of the FAR algorithm on the Lyrtech (now, Nutaq) small form factor software defined radio development platform is presented, and the performance recorded through the hardware is observed to corroborate well with that obtained through simulations, allowing for implementation losses.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physical Communication - Volume 17, December 2015, Pages 172–184
نویسندگان
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