A Random Matrix Approach to Wide Band Spectrum Sensing: Unknown Noise Variance Case
محل انتشار: بیست و یکمین کنفرانس مهندسی برق ایران
سال انتشار: 1392
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,222
فایل این مقاله در 5 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
ICEE21_311
تاریخ نمایه سازی: 27 مرداد 1392
چکیده مقاله:
In this paper three different scenarios in wide band spectrum sensing have been studied. While the signal and noise statistics are supposed to be unspecified, random matrixes havebeen utilized in order to estimate the noise variance. These scenarios are: 1- Number of subbands is specified and there isenough information regarding being used or being unused for each of them. 2- Number of subbands is known but there is no information about usage distribution among them. 3- Number of subbands is unknown. Simulation results showed the superior performance of the proposed scheme. Regarding the number ofsamples, the proposed method requires less number of samples compared to the cyclo-stationary spectrum sensing algorithmsand more samples compared to the energy detection based methods. But, regarding the detection probability, the proposedmethod is superior compared to both other spectrum sensing methods.
کلیدواژه ها:
wide band spectrum sensing ، cognitive radio ، spectrum allocation ، noise estimation ، detection probability
نویسندگان
Sajjad Imani
ECE. Dept., University of Tehran, Tehran, Iran
Amin Banitalebi-Dehkordi
ECE. Dept., University of British Columbia, Vancouver, BC
Mehdi Cheraghi
ECE. Dept., Shahed University, Tehran, Iran