Results 31 to 40 of about 2,333,689 (240)
Broadband Cognitive Radio Enabled by Photonics
Journal of Lightwave Technology, 2020 Cognitive radio is considered as a possible disruptive force to improve the spectral resource efficiency through sensing and interacting with the environment.
Dan Zhu, S. Pan
semanticscholar +1 more source
EURASIP Journal on Wireless Communications and Networking, 2018 In this paper, we consider a massive MIMO-enabled multi-way amplify-and-forward relay network with channel aging, where multiple users mutually exchange information via an intermediate relay equipped with massive antennas.
Fangqing Tan +3 more
doaj +1 more source
Trends and Applications for Cognitive Radio [PDF]
Journal of Computer Networks and Communications, 2012 Editorial
DEL RE, ENRICO +2 more
openaire +3 more sources
Robust beamforming in cognitive radio [PDF]
IEEE Transactions on Wireless Communications, 2009 This letter considers the multi-antenna cognitive radio (CR) network, which has a single secondary user (SU) and coexists with a primary network of multiple users. Our objective is to maximize the service probability of the SU, subject to the interference constraints on the primary users (PUs) in the form of probability.
Wong, KK, Zheng, G, Ng, TS, Ma, S
openaire +6 more sources
Journal of Marine Science and Engineering, 2023 In recent years, underwater wireless optical communication (UWOC) has become a potential wireless carrier candidate for signal transmission in water mediums such as oceans.
Jielin Fu +3 more
doaj +1 more source
, 2011 In this chapter we present UWB communication as a potential candidate for cognitive radio technology. Cognitive radios are intelligent radios that could adopt itself by sensing and learning the radio environment and optimize its transmission strategies to maximize the utilization of the scarce radio resources such as the radio spectrum.
Radoslaw Piesiewicz +2 more
openaire +3 more sources
A reconfigurable platform for cognitive radio [PDF]
IEE Mobility Conference 2005. The Second International Conference on Mobile Technology, Applications and Systems, 2005 Today's rigid spectrum allocation scheme creates a spectrum scarcity problem for future wireless communications. Measurements show that a wide range of the allocated frequency bands are rarely used. Cognitive radio is a novel approach to improve the spectrum usage, which is able to sense the spectrum and adapt its transmission while coexisting with the
Andre B.J. Kokkeler +5 more
openaire +2 more sources
A KNN Learning Algorithm for Collusion-Resistant Spectrum Auction in Small Cell Networks
IEEE Access, 2018 Existing spectrum auction algorithms rarely consider the collusion-resistant, which decreases the spectrum allocation efficiency. In this paper, we propose a collusion-resistant spectrum auction algorithm based on K-Nearest Neighbor (KNN) learning in ...
Feng Zhao, Qingqing Tang
doaj +1 more source
IEEE Access, 2019 The quality of service (QoS) and lifetime of wireless sensor networks (WSNs) are severely degraded by coverage holes generated by random deployment or battery exhaustion of sensors. This work firstly introduces a novel confident information coverage CIC)
Jie Feng, Hongbin Chen
doaj +1 more source
Sensors, 2020 An important step in the design of receiver aperture and optimal spacing of the diversity scheme for an underwater laser communication system is to accurately characterize the two-dimensional (2D) spatial distribution of laser beam intensity.
Wei Wang +3 more
doaj +1 more source