Wideband Spectrum Sensing by Multistep Frequency Domain Energy Detection in GNU Radio
نویسندگان
چکیده
Wideband spectrum sensing capability can be enabled in GNU Radio, which is an open source software radio platform. In order to improve the detection performance of GNU Radio in practice, we studied its approach of wideband spectrum sensing, i.e., multistep frequency-domain energy detection. We first gave a detailed analysis of the functions and implementation details in its wideband spectrum sensing procedure. Then, we simulated the whole procedure of the wideband spectrum sensing by using MATLAB. With the simulation results, we discussed the factors influencing the decision threshold of energy detection and proposed a method to determine the decision threshold for each step in the multistep detection. The results presented in this paper can be used for setting parameters of GNU Radio to achieve more precise spectrum sensing. Key-Words: Spectrum sensing, energy detection, GNU Radio
منابع مشابه
Experimental Implementation of Spectrum Sensing Using Cognitive Radio
Cognitive radio (CR) is designed to detect available frequency bands/channels. Spectrum sensing plays a critical role in CR with energy detection being the most common method. In our paper, we implement energy detection using GNU Radio and USRP boards as a test-bed. Specifically, energy detection is performed by using blocks in GNU Radio Companion (GRC) to calculate the energy of a present sign...
متن کاملInvestigation of Always Present and Spectrum Sensing based Incumbent Emulators
Cognitive radio (CR) technology has been suggested for effective use of spectral resources. Spectrum sensing is one of the main operations of CR users to identify the vacant frequency bands. Cooperative spectrum sensing (CSS) is used to increase the performance of CR networks by providing spatial diversity. The accuracy of spectrum sensing is the most important challenge in the CSS process sinc...
متن کاملBER Analysis of Energy Detection Spectrum Sensing in Cognitive Radio Using GNU Radio
Abstract—Cognitive Radio is a turning out technology that empowers viable usage of the spectrum. Energy Detector-based Sensing is the most broadly utilized spectrum sensing strategy. Besides, it's a lot of generic as receivers doesn't would like any information on the primary user's signals, channel data, of even the sort of modulation. This paper puts forth the execution of energy detection se...
متن کاملStudy and Analysis of Spectrum Sensing Techniques and Implementation of Matched Filters in Cognitive Radio Systems
Spectrum sensing is an essential enabling functionality for cognitive radio networks to detect spectrum holes and opportunistically use the under-utilized frequency bands without causing harmful interference to legacy networks. This paper introduces a novel wideband spectrum sensing technique, called multiband joint detection, which jointly detects the signal energy levels over multiple frequen...
متن کاملWideband Spectrum Sensing and Signal Classification for Autonomous Self-Learning Cognitive Radios
In this dissertation, we develop a novel cognitive radio (CR) architecture, referred to as the Radiobot [1], whose goals go beyond dynamic spectrum access (DSA) to achieve the main features of cognition, notably, self-learning and self-reconfiguration. The proposed CR architecture is based on a sequence of signal processing and machine learning techniques that enable the Radiobot to sense a wid...
متن کامل