Results 51 to 60 of about 138,567 (160)
Resource Allocation for Two-Way Relay Network Based on Cognitive Radio
Dianxin kexue, 2015 The resource allocation issue for sensing-based spectrum opportunistic access and sensing-based spectrum sharing access in two-way relay cognitive network with imperfect spectrum sensing was discussed.Different from the traditional resource allocation ...
Shuang Liang, Shouyi Yang, Wanming Hao
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A Sequential Compressed Spectrum Sensing Algorithm against SSDH Attack in Cognitive Radio Networks
Journal of Electrical and Computer Engineering, 2018 Spectrum sensing is one of the key technologies in wireless wideband communication. There are still challenges in respect of how to realize fast and robust wideband spectrum sensing technology.
Zhuhua Hu +4 more
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Distributed Wideband Spectrum Sensing
, 2015 6 pages, 6 figures, submitted to ieee Globecom ...
Kealy, Thomas +2 more
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Wavelet Transform-Spectrum Sensing
, 2022 Spectrum sensing is a vital cognitive radio function that protects licensed users from dangerous interference and finds accessible spectrum for better spectrum use. In practice, however, multipath fading, shadowing, and receiver uncertainty frequently degrade detection performance.
Himanshu, Monga, +2 more
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Secure Cooperative Spectrum Sensing and Allocation in Distributed Cognitive Radio Networks
International Journal of Distributed Sensor Networks, 2015 Cognitive radio networks (CRNs) are an emerging wireless communications technique for resolving the significant spectrum scarcity problem. Despite their promising characteristics, CRNs also introduce new security threats, especially the internal attacks ...
Hui Lin +4 more
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, 2016 Spectrum sensing is a fundamental operation in cognitive radio environment. It gives information about spectrum availability by scanning the bands. Usually a fixed amount of time is given to scan individual bands. Most of the times, historical information about the traffic in the spectrum bands is not used. But this information gives the idea, how busy
Murthy, Garimella Rama +3 more
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Wideband Spectrum Sensing Based on Single-Channel Sub-Nyquist Sampling for Cognitive Radio
Sensors, 2018 Spectrum sensing is an important task in cognitive radio. However, currently available Analog-to-Digital Converters (ADC) can hardly satisfy the sampling rate requirement for wideband signals. Even with such an ADC, the cost is extremely high in terms of
Changjian Liu +3 more
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1 bit Compressive Spectrum Sensing Algoritbm Based on Distributed Model
Dianxin kexue, 2014 Since the actual sparsity of spectrum is unknown and time-varying, information transmit frequently between nodes in the distributed spectrum sensing network consumes communication bandwidth.
Zhijin Zhao, Weikang Hu, Junwei Hu
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Cross-Layer Dynamic Spectrum Map Management Framework for White Space Applications
EURASIP Journal on Wireless Communications and Networking, 2010 White space, unused TV spectrum, will be allowed for unlicensed use by wireless communication devices "the so called white space applications (WSAs)." WSAs retrieve a location-based spectrum map, a list of open white space channels, from a spectrum map ...
Kim Jongman, Yoon Seungil, Lim Kyutae
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