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Now showing items 81-90 of 173
Nematic opto-mechanical actuators for the fabrication of refreshable tactile systems
(2013 , Conference Paper)
Nematic elastomers are promising materials for the fabrication of actuators due to their ability to reversibly contract and expand during phase transitions triggered by external stimuli. We present a refreshable tactile ...
Detection of perinatal hypoxia using time-frequency analysis of heart rate variability signals
(2013 , Conference Paper)
This paper presents a time-frequency approach to detect perinatal hypoxia by characterizing the nonstationary nature of heart rate variability (HRV) signals. Quadratic time-frequency distributions (TFDs) are used to represent ...
Principles of excellence in Engineering education applied to GCC/MENA Engineering Colleges and comparison with Australia and France: A thesis with analysis, results, observations
(2013 , Conference Paper)
This invited paper aims at reviewing the current status of Engineering education in the GCC countries and proposing a few guidelines for reform and improvement. The principles applied to this process have been developed ...
Applying statistical antenna approach in jet engine electromagnetic field analysis
(2013 , Conference Paper)
In this paper, statistical antenna approach is applied to develop an equivalent model for the fields generated by a fixed excitation inside a jet engine with dynamic rotating blade. The equivalent model is represented by ...
Energy-aware joint power, packet and topology optimization by simulated annealing for WSNs
(2013 , Conference Paper)
Energy-aware connectivity in wireless sensor networks (WSNs) can increase their network lifetime. This can be achieved by optimizing the power control, a particular communication mechanism and the topology control. To this ...
A hybrid spectrum sensing technique with multiple antenna based on GLRT
(2013 , Conference Paper)
Spectrum sensing is the core for any cognitive radio network. Quick detection of the primary user signal allows for higher spectrum efficiency. In this paper, we introduce and implement a new hybrid spectrum sensing technique ...
Adaptive hierarchical cooperative communication using energy harvesting relay
(2013 , Conference Paper)
In this paper, we present an adaptive wireless communication system with energy harvesting relay where, two sources wish to send data to a destination via an energy harvesting relay that utilizes hierarchical constellation. ...
Distributed spectrum sensing of correlated observations in cognitive radio networks
(2013 , Conference Paper)
In this paper, Collaborative Spectrum Sensing (CSS) as one of the most efficient sensing approaches in Cognitive Radio Networks (CRNs) is investigated when the Secondary Users (SUs) observations are assumed to be correlated. ...
Adaptive modulation in multi-user cognitive radio networks over fading channels
(
IEEE Computer Society
, 2013 , Conference Paper)
In this paper, the performance of adaptive modulation in multi-user cognitive radio networks over fading channels is analyzed. Multi-user diversity is considered for opportunistic user selection among multiple secondary ...
Efficient FPGA-based implementation of a novel dual mode spectrum sensing technique
(2013 , Conference Paper)
Cognitive radio networks require an efficient and reliable method of sensing the spectrum. In this paper, we introduce and implement a new dual mode spectrum sensing technique that is based on combining Quickest Detection ...