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The LTE system that traditionally uses the licensed band have added the new technology, licensed assisted access (LAA), that enables to use 5 GHz unlicensed band with existing licensed band. Coexistence with Wi-Fi is major part of the LAA technology and regulations relating to coexistence has been revised after LAA technology emerged in Europe. Channel occupancy time (COT) is a critical parameter...
This paper presents the design scheme of a passive intermodulation distortion (PIMD) finder in order to find out the birthplace of PIMD which is introduced by sharing a feeder cable in in-building wireless multi-band networks. To this end, a frequency-modulated continuous-wave (FMCW) signal generation module and a fast Fourier transform (FFT)-based signal processing module are implemented to figure...
Cognitive Radio (CR) technology is one of the promising technology to efficiently utilize the unused radio spectrum. Recently, the Federal Communications Commission (FCC) allowed TV white space (TVWS) to be used for data communications provided the licensed user operations should be protected. The FCC made the rules and regulation for using the TVWS. Till now there is no real deployment of any communication...
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