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Browsing Conference papers by Author "Tsiftsis, Theodoros A."
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Liu, Huidong; Chen, Jin; Ding, Guoru; Tsiftsis, Theodoros A.; Rowell, Corbett
(2016)
In this paper, a cooperative cognitive radio network
(CRN) with energy harvesting capabilities of its secondary users
is considered. Specifically, cooperative spectrum sensing and
multi-antenna beamforming are employed ...
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Bagheri, Alireza; Sofotasios, Paschalis C.; Tsiftsis, Theodoros A.; Ho-Van, Khuong; Loupis, Michael I.; Freear, Steven; Valkama, Mikko
(2016)
Energy detection has been for long constituting the
most popular sensing method in RADAR and cognitive radio
systems. The present paper investigates the sensing behaviour of
an energy detector over Hoyt fading channels, ...
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Miridakis, Nikolaos I.; Tsiftsis, Theodoros A.; Alexandropoulos, George C.; Debbah, M´erouane
(2016)
A dual-hop cognitive (secondary) relaying system
incorporating collaborative spectrum sensing to opportunistically
switch between data transmission and energy harvesting is
introduced. The secondary relays, first scan ...
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Qi, Nan; Xiao, Ming; Tsiftsis, Theodoros A.; Cao, Phuong L.; Skoglund, Mikael; Li, Lixin
(2016)
In this paper, the energy efficiency (EE) of a
cooperative diversity system with maximum diversity network
coding (MDNC) is studied. In the considered system, channel
state information (CSI) is only available at the ...
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Tsinos, Christos G.; Foukalas, Fotis; Tsiftsis, Theodoros A.
(2016)
In this paper a novel Carrier Aggregation (CA)
scheme is proposed for downlink MIMO LTE-A Systems. The
proposed approach achieves increased transmission rates by
establishing the communication links via both licensed ...
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Miridakis, Nikolaos I.; Tsiftsis, Theodoros A.; Alexandropoulos, George C.; Debbah, M´erouane
(2016)
We present a multi-user multiple-input multipleoutput
(MIMO) cognitive radio system consisting of a secondary
receiver that deploys spatial multiplexing to decode signals from
multiple secondary transmitters, under the ...