Threshold optimization of a finite sample-based cognitive radio network using energy detector
نویسندگان
چکیده
منابع مشابه
Threshold optimization of a finite sample-based cognitive radio network using energy detector
In this paper, we consider a cognitive radio network containing two cognitive radios (CRs) and one primary user. The CRs utilize finite number of received data samples for estimating the energy of the primary signals and forward these energy estimates to a fusion center (FC). The FC combines the energy estimates and utilizes a global threshold based on the exact knowledge of local thresholds of...
متن کاملOptimization of Sensing Time in Energy Detector Based Sensing of Cognitive Radio Network
In cognitive radio network, spectrum sensing methods detect the existence of primary users to utilize spectrum holes for secondary users. When it is found that there are no busy primary users then secondary users are allowed to transmit through the spectrum. During the transmission process of secondary users, there may be collision between secondary users. This leads to decrease in the throughp...
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 کاملOptimized Cooperative Spectrum Sensing in Cognitive Radio Networks Based on Dynamic Threshold Energy Detector
Cognitive radio is a seemly hopeful technology for future. Spectrum sensing is the most important function of cognitive radio. Most of the spectrums sensing techniques proposed become dysfunctional at lower signal to noise ratio environments. This paper proposes a reliable spectrum sensing algorithm for cooperative cognitive network. A dynamic threshold updating method is developed for which th...
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: EURASIP Journal on Wireless Communications and Networking
سال: 2013
ISSN: 1687-1499
DOI: 10.1186/1687-1499-2013-165