Results 21 to 30 of about 2,288 (244)
IEEE Access, 2021 Most of the compressive wideband spectrum sensing algorithms need to recover the spectrum, which require high computational complexity. Recently, a novel algorithm for compressive wideband sensing without spectrum recovery (NoR) was proposed.
Shiyu Ren +3 more
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Spectrum Sensing in Wideband OFDM Cognitive Radios [PDF]
IEEE Transactions on Signal Processing, 2010 In this paper, spectrum sensing of an orthogonal frequency division multiplexing (OFDM) based cognitive radio (CR) is addressed. The goal is to identify the portions of the spectrum that are unused by primary user systems and other CR systems, called existing user (EU) systems altogether, with the emphasis on conquering the challenge imposed by ...
Chien-Hwa Hwang +2 more
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Wideband Sequential Spectrum Sensing with Varying Thresholds [PDF]
2010 IEEE Global Telecommunications Conference GLOBECOM 2010, 2010 In this contribution, time varying threshold sequential detectors are employed for energy detection-based spectrum sensing in low- SNR regimes. Sequential detection is proven to be faster (on average) than any other multi-sample detector for a set of given probabilities of detection and false-alarm.
Kasra Haghighi +2 more
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Wideband Spectrum Sensing For Cognitive Radio
, 2014 Publication in the conference proceedings of EUSIPCO, Lisbon, Portugal ...
José M. N. Vieira +2 more
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Cooperative Wideband Spectrum Sensing Over Fading Channels [PDF]
IEEE Transactions on Vehicular Technology, 2016 In cognitive radio (CR) systems, it is crucial for secondary users to reliably detect spectral opportunities across a wide frequency range. This paper studies a novel multirate sub-Nyquist spectrum sensing (MS3) system capable of performing wideband spectrum sensing in a cooperative CR network over fading channels.
Hongjian Sun 0001 +3 more
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A Recursive Algorithm for Wideband Temporal Spectrum Sensing
IEEE Transactions on Communications, 2018 Wideband spectrum sensing techniques determine which portions of a given spectrum band are occupied or idle in the frequency domain. The idle portions represent spectrum holes that can potentially be exploited by secondary or unlicensed users. Existing methods for wideband sensing, however, do not take into account the temporal activity of the primary ...
Joseph M. Bruno, Brian L. Mark
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Compressed Wideband Spectrum Sensing: Concept, Challenges, and Enablers [PDF]
IEEE Communications Magazine, 2018 6 pages, 5 figures, and 1 ...
Bechir Hamdaoui +2 more
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A wideband spectrum sensing approach based on sub-band matching selection
Dianxin kexue, 2016 Wideband spectrum sensing technology based on compressed sensing can effectively reduce the high sampling rate and the complexity of spectrum sensing.During the sensing process,in order to enhance the reconstruction performance of the spectrum signal,a ...
Yuzhi YAN +4 more
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Wideband Spectrum Sensing Based on Reconfigurable Filter Bank in Cognitive Radio
Future Internet, 2019 In order to ease the conflict between the bandwidth demand of high-rate wireless communication and the shortage of spectrum resources, a wideband spectrum sensing method based on reconfigurable filter bank (RFB) with adjustable resolution is presented ...
Huan Wang +3 more
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Distributed wideband spectrum sensing for cognitive radio networks [PDF]
2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2014 Wideband spectrum sensing improves the agility of spectrum sensing and spectrum hand-off in cognitive radio systems. In this paper, a distributed wideband spectrum sensing technique over adaptive diffusion networks is proposed. Considering unknown and different channels between the primary and the cognitive users, an averaged received power spectrum ...
Rocio Arroyo-Valles +2 more
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