In this paper planar circular Electromagnetic Band Gap (EBG) structures have been implemented in the Butler matrix fed antenna array system to improve the radiation performance of the system. Initially a conventional 4×4 Butler matrix fed antenna array system has been designed at 14.5 GHz. Asymmetricity in the gain values of major beams of the…
Omnet++ Simulator
CogCell: cognitive interplay between 60 GHz picocells and 2.4/5 GHz hotspots in the 5G era
The rapid proliferation of wireless communication devices and the emergence of a variety of new applications have triggered investigations into next-generation mobile broadband systems, i.e. 5G. Legacy 2G-4G systems covering large areas were envisioned to serve both indoor and outdoor environments. However, in the 5G era, 80 percent of all traffic is expected to be…
100 GHz reflectometer for sensitivity analysis of MEMS sensors comprising an intermediate frequency Six-port receiver
Due to the growing market for Micro Electro Mechanical Systems (MEMS), especially for the application in mobile electronic devices like cameras, phones or tablet computers, cost and time efficient test and evaluation systems are required for the production process. This work presents a novel measurement setup for MEMS microphones, that allows an inline, contactless evaluation of…
Inductive coupling effects in large TSV arrays
The effects of inductive coupling among TSVs within large TSV arrays are investigated in this paper. A comparison of the equivalent inductance of a paired TSV model and arrayed TSV macromodel is presented for three TSV distribution topologies, grouped, lined, and uniform, within the power network. Modified closed-form expressions are proposed to determine the equivalent inductance…
A Location-wise Predetermined Deployment for Optimizing Lifetime in Visual Sensor Networks
Visual sensor networks are receiving significant attention due to their potential applications ranging from surveillance to tracking domains. Nevertheless, due to the funneling effect, the unbalanced energy usage among visual sensor nodes (SNs) increases and leads to premature decrease in networklifetime. Firstly, considering Rayleigh fading channel and routing models, we analyze the optimization ofnetwork lifetime…
Minimizing resource protection in IP over WDM networks: Multi-layer shared backup router [invited]
Optical networks and Internet Protocol/Multi-Protocol Label Switching (IP/MPLS) based networks have been traditionally designed and operated by separate departments of network operators. Likewise, both layers have always represented different business areas for system providers, which maintain different product lines for each of them. However, network operators have an IP/ MPLS over WDM architecture. The main drivers for this unique transport network are the cost savings…
A symbolic system synthesis approach for hard real-time systems based on coordinated SMT-solving
We propose an SMT-based system synthesis approach where the logic solver performs static binding and routing while the background theory solver computes global time-triggered schedules. In contrast to previous work, we assign additional time to the logic solver in order to refine the binding and routing such that the background theory solver is more likely…
Perception of noise in global illumination algorithms based on spiking neural network
This paper proposes a reduced reference quality assessment model based on spiking neural network(SNN) in order to predict which image highlights perceptual noise in unbiased global illumination algorithms. These algorithms provide photo-realistic images by increasing the number of paths as proved by Monte Carlo theory. The objective is to find the number of paths that are…
Distributed control plane with spectral fragmentation-aware RMSA and flexible reservation for dynamic multidomain software-defined elastic optical networks
We propose a distributed control scheme utilizing spectral fragmentation-aware RMSA and flexible active/passive reservation mechanism for dynamic multi-domain software-defined elastic opticalnetworks. Our proposed scheme offers significant blocking probability reduction compared to conventional GMPLS/PCE architecture.
Towards 1 Tbit/s SOA-based 1310 nm transmission for local area network/data centre applications
The growing data traffic in the local area networks is driving development of the cost-effective transmission systems that can carry it effectively. In this study, firstly, we investigate the influence of a semiconductor optical amplifier (SOA) on the transmission quality in the 1310 nm wavelength-division-multiplexed system. We examine the differences in the channels gain and…