SWENET, the Network Community for Software engineering Education, is an NSF funded project to produce and organize high-quality materials supporting software engineering education. The project supports faculty members...
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The problem Min-Power k-Connectivity seeks a power assignment to the nodes in a given wireless ad hoc network such that the produced network topology is k-connected and the total power is the lowest In this paper, we ...
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In this paper, an efficient technique is proposed to optimize the geometie and arrangements of the slots of the CARLSAs. Moment method in carried out to obtain the unknown excitation coefficients after spliting the sl...
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In this paper, a new technique is proposed to analyse the mutual admittance between the slots of the radial line slot antennas (RLSA). No Green's functions are required since the mutual and self admittance of the ...
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In wireless sensor networks, energy and communication bandwidth are precious resources. Traditionally, layering has been used as a design principle for network stacks;hence routing protocols assume no knowledge of the...
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A numerical model has been developed to analyze and optimize the run-time performance of a disk drive spindle motor. A field-circuit coupled time-stepping finite element method is used for the analysis of the motor op...
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A numerical model has been developed to analyze and optimize the run-time performance of a disk drive spindle motor. A field-circuit coupled time-stepping finite element method is used for the analysis of the motor optimal performances with limits of supply voltage, current and power consumption during the spin-up time of the drive. Results of investigations with one and two disks are presented
In recent times, an increasing, worldwide effort has been devoted to the development of automatic personal identification systems that can be effective in a wide variety of security contexts. Palmprints have a number ...
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We propose a new random beamforming technique in forward link multiuser MIMO systems that exploits efficient multiuser diversity and spatial multiplexing gain. The common channels are allocated to more than one user s...
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We propose a new random beamforming technique in forward link multiuser MIMO systems that exploits efficient multiuser diversity and spatial multiplexing gain. The common channels are allocated to more than one user simultaneously and multiple antennas at the receivers are used for interference nulling, resulting in higher throughput and reduced average waiting time. We show that the throughput of the proposed scheme outperforms the upper bound of the conventional scheme.
In this paper, we study the problem of determining the optimal number of traffic and control channels in a packet based cellular system. We only consider systems where a given (total) number of available channels are ...
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In this paper, we study the problem of determining the optimal number of traffic and control channels in a packet based cellular system. We only consider systems where a given (total) number of available channels are divided into traffic and control channels. We first show how to compute the ratio of required traffic and control channels based on the parameters of the system. However, it may be difficult to determine the parameters for a practical system, particularly, when the traffic is non-stationary. We observe that the maximum utilization of channels can be achieved when we split the total number of channels such that a data transfer request that passes the availability test of one of them does not get rejected at the other. Based on this observation, we propose a dynamic algorithm for splitting the available channels among data and control channels. The algorithm does not require any system parameters and does not assume any traffic characterization. Irrespective of the number of mobile stations, it gives best-effort utilization of the available resources by dynamically distributing channels among traffic and control channels. We study the performance of the algorithm using a simulation model. We consider non-stationary traffic patterns based on 'time of day' behavior.
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