Energy Efficient Switching between Data Transmission and Energy Harvesting for Cooperative Cognitive Relaying Systems
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Date
2016
Authors
Miridakis, Nikolaos I.
Tsiftsis, Theodoros A.
Alexandropoulos, George C.
Debbah, MĀ“erouane
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Journal ISSN
Volume Title
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Abstract
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 the wireless channel
for a primary network activity, and then convey their reports
to a secondary base station (SBS). Afterwards, the SBS, based
on these reports and its own estimation, decides cooperatively
the presence of primary transmission or not. In the former
scenario, all secondary relays start to harvest energy from the
transmission of one or more primary nodes. In the latter scenario,
the system initiates secondary communication via a best relay
selection policy. The performance of the proposed scheme is
thoroughly investigated by assuming realistic channel conditions,
i.e., non-identical link-distances and outdated channel estimation,
while its overall energy consumption is evaluated, indicating the
efficiency of the switching approach.
Description
Keywords
Cognitive relaying systems, cooperative spectrum sensing, detection probability, energy efficiency, energy harvesting
Citation
Nikolaos I. Miridakis, Theodoros A. Tsiftsis, George C. Alexandropoulos, and MĀ“erouane Debbah; 2016; Energy Efficient Switching between Data Transmission and Energy Harvesting for Cooperative Cognitive Relaying Systems; IEEE ICC 2016 - Green Communications Systems and Networks