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Kenta Umebayashi
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Year
On the selection of the best detection performance sensors for cognitive radio networks
Z Khan, J Lehtomaki, K Umebayashi, J Vartiainen
IEEE Signal Processing Letters 17 (4), 359-362, 2010
912010
Frequency and time domain channel models for nanonetworks in terahertz band
J Kokkoniemi, J Lehtomäki, K Umebayashi, M Juntti
IEEE Transactions on Antennas and Propagation 63 (2), 678-691, 2014
762014
On the measurement of duty cycle and channel occupancy rate
JJ Lehtomaki, R Vuohtoniemi, K Umebayashi
IEEE Journal on Selected Areas in Communications 31 (11), 2555-2565, 2013
692013
Efficient decision fusion for cooperative spectrum sensing based on OR-rule
K Umebayashi, JJ Lehtomaki, T Yazawa, Y Suzuki
IEEE transactions on wireless communications 11 (7), 2585-2595, 2012
542012
Study on soft decision based cooperative sensing for cognitive radio networks
H Uchiyama, K Umebayashi, T Fujii, F Ono, K Sakaguchi, Y Kamiya, ...
IEICE transactions on communications 91 (1), 95-101, 2008
492008
Energy detection based estimation of channel occupancy rate with adaptive noise estimation
JJ Lehtomaki, R Vuohtoniemi, K Umebayashi, JP Makela
IEICE Transactions on Communications 95 (4), 1076-1084, 2012
432012
Study on cooperative sensing in cognitive radio based ad-hoc network
H Uchiyama, K Umebayashi, Y Kamiya, Y Suzuki, T Fujii, F Ono, ...
2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio …, 2007
392007
Improved channel occupancy rate estimation
JJ Lehtomäki, M López-Benítez, K Umebayashi, M Juntti
IEEE Transactions on Communications 63 (3), 643-654, 2015
322015
Analysis of cognitive radio networks with imperfect sensing
I Suliman, J Lehtomäki, T Bräysy, K Umebayashi
2009 IEEE 20th international symposium on personal, indoor and mobile radio …, 2009
312009
Estimation of primary channel activity statistics in cognitive radio based on imperfect spectrum sensing
OH Toma, M Lopez-Benitez, DK Patel, K Umebayashi
IEEE Transactions on Communications 68 (4), 2016-2031, 2020
292020
Direct communication between terminals in infrastructure based networks
J Lehtomäki, I Suliman, J Vartiainen, M Bennis, A Taparugssanagorn, ...
Proc. ICT-MobileSummit, 1-8, 2008
292008
Threshold-setting for spectrum sensing based on statistical information
K Umebayashi, K Hayashi, JJ Lehtomäki
IEEE Communications Letters 21 (7), 1585-1588, 2017
282017
A causal channel model for the terahertz band
K Tsujimura, K Umebayashi, J Kokkoniemi, J Lehtomäki, Y Suzuki
IEEE Transactions on Terahertz Science and Technology 8 (1), 52-62, 2017
262017
Simple primary user signal area estimation for spectrum measurement
K Umebayashi, K Moriwaki, R Mizuchi, H Iwata, S Tiiro, JJ Lehtomäki, ...
IEICE Transactions on Communications 99 (2), 523-532, 2016
252016
Blind adaptive estimation of modulation scheme for software defined radio
K Umebayashi, S Ishii, R Kohno
11th IEEE International Symposium on Personal Indoor and Mobile Radio …, 2000
242000
Estimation of primary channel activity statistics in cognitive radio based on periodic spectrum sensing observations
M López-Benítez, A Al-Tahmeesschi, DK Patel, J Lehtomäki, ...
IEEE Transactions on Wireless Communications 18 (2), 983-996, 2018
232018
Smart spectrum for future wireless world
T Fujii, K Umebayashi
IEICE Transactions on Communications 100 (9), 1661-1673, 2017
212017
Duty cycle and noise floor estimation with Welch FFT for spectrum usage measurements
K Umebayashi, R Takagi, N Ioroi, Y Suzuki, JJ Lehtomäki
2014 9th International Conference on Cognitive Radio Oriented Wireless …, 2014
212014
Efficient time domain deterministic-stochastic model of spectrum usage
K Umebayashi, M Kobayashi, M Lopez-Benitez
IEEE Transactions on Wireless Communications 17 (3), 1518-1527, 2017
192017
Development of a measurement system for spectrum awareness
K Umebayashi, S Tiiro, JJ Lehtomäki
1st International Conference on 5G for Ubiquitous Connectivity, 234-239, 2014
192014
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Articles 1–20