Title :
A Two-Tiered Cognitive Radio System for Interference Identification in 2.4 GHz ISM Band
Author :
Rele, Kunal ; Roberson, Dennis ; Zhang, Bingjian ; Li, Li ; Yap, Ying Bing ; Taher, Tanim ; Ucci, Donald ; Zdunek, Kenneth
Author_Institution :
Dept. of Comput. Sci., Illinois Inst. of Technol., Chicago, IL, USA
Abstract :
A detection module has been prototyped for cognitive radio usage in the industrial, scientific and medical (ISM) band using time domain as well as frequency domain detection. Duty cycle and pulse width characteristics are used for detection in the time domain. Fast Fourier transform (FFT) signatures and spectral occupancy information is used to confirm the detection in the frequency domain. The detection module is designed to behave dynamically. Varying the input parameters to the detector module adjusts the detection overhead. The overhead varies depending on the relative usage of a fast detection algorithm versus a slower but more accurate scheme; the number of device types to be detected; and whether frequency-selective scanning or wide-band detection is needed. The prototype is built on a software radio platform and is targeted for future software defined radios (SDR), and can be adapted to current and future orthogonal frequency division multiplexed (OFDM) systems.
Keywords :
OFDM modulation; cognitive radio; fast Fourier transforms; frequency-domain analysis; radiofrequency interference; software radio; spectral analysis; time-domain analysis; ISM band; cognitive radio system; cognitive radio usage; detection module; detection overhead; detector module; duty cycle; fast Fourier transform signatures; frequency 2.4 GHz; frequency domain detection; frequency-selective scanning; industrial, scientific and medical band; interference identification; orthogonal frequency division multiplexed systems; pulse width characteristics; software defined radios; software radio platform; spectral occupancy information; time domain detection; wide-band detection; Cognitive radio; Detection algorithms; Detectors; Fast Fourier transforms; Frequency domain analysis; Interference; Prototypes; Radiofrequency identification; Software radio; Space vector pulse width modulation;
Conference_Titel :
Consumer Communications and Networking Conference (CCNC), 2010 7th IEEE
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4244-5175-3
Electronic_ISBN :
978-1-4244-5176-0
DOI :
10.1109/CCNC.2010.5421612
