A Robust Detector Using SNR with Adaptive Threshold Scheme in Cognitive Radio Networks
نویسندگان
چکیده
منابع مشابه
Robust Adaptive Beamforming in Cognitive Radio Networks
In this paper, we propose an adaptive non-intrusive cognitive radio network based on smart antenna technologies. The cognitive transmitter (CT), which is equipped with antenna array, first estimates and tracks the composite steering vectors of each primary (licensed) user. In what follows, CT forms transmit beamforming to place nulls to primary receivers (PR) based on the estimated spatial sign...
متن کاملAdaptive relaying scheme for cognitive radio networks
Cognitive radio (CR) systems allow unlicensed secondary users to transmit on the licensed frequency bands without degrading the licensed primary transmissions. Combining CR with other emerging transmission techniques, such as user cooperation may have many benefits on both the primary and secondary transmissions. In this study, the authors propose and investigate an adaptive relay-based coopera...
متن کاملSnr-based Adaptive Spectrum Sensing for Cognitive Radio Networks
Cognitive radios are indispensable to shift paradigm from conventional exclusive spectrum assignment to dynamic spectrum access. They can boost up spectrum utilization significantly, by dynamically accessing unused primary spectrum while bringing no harm to primary users. The envisioned radio calls for fast and accurate spectrum sensing. Researchers are focusing on cooperative spectrum sensing ...
متن کاملAdaptive Double-Threshold Based Energy and Matched Filter Detector in Cognitive Radio Networks
In this paper we propose a new cooperative spectrum sensing method using adaptive double threshold energy and matched filter detector in cognitive radio networks. The energy detector (ED) performance is highly degraded under noise uncertainty condition. Also, ED cannot well differentiate between the signal and noise, if the detected observational value of the primary user (PU) lies in the confu...
متن کاملCooperative Adaptive Threshold Based Energy and Matched Filter Detector in Cognitive Radio Networks
CR (cognitive radio) is the key technology for unlicensed SUs (secondary users) to exploit the unused spectrum of PUs (primary users) via opportunistic spectrum access. In this paper, we propose a new spectrum sensing method using cooperative adaptive threshold based on energy and matched filter detector in cognitive radio networks. The ED (energy detector) is highly susceptible to noise uncert...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Signal Processing, Image Processing and Pattern Recognition
سال: 2013
ISSN: 2005-4254,2005-4254
DOI: 10.14257/ijsip.2016.9.5.15