In wireless sensor networks, in-network aggregation is the process of compressing locally the data gathered by the sensor nodes, so that only the compressed data travel across several hops to their destination. We address the problem of aggregating data generated by sporadic events in random locations of the monitored area. The sensor nodes keep their transceivers off most of the time in order ...

Gigabit per second and higher bandwidths imply greater challenge to perform lossless packet capturing on generic PC architectures. This is because of software based capture solutions, which did not improve as fast as network bandwidth and they still heavily rely on the OS's packet processing mechanism. There are hardware and operating system factors that primarily affect capture performance. Th...

Abstract The microstatistic multi-user receiver (MSF-MUD) belongs to non–linear single–stage multi-user receivers' family (NSS–MUD) [1-3]. The output of the MSF-MUD is taken as the sign of the multi-channel nonlinear transformation of the output of a bank of the matched filters (BMF). The non-linear transformation is made by multi-channel conventional microstatistic filter (M-CMF) [2]. The M-CM...

Abstract— Orthogonal frequency division multiplexing (OFDM) has been attracting much attention as the next generation wireless transmission technique. In a cellular network, the same carrier frequency is reused at different base stations and therefore, cochannel interference (CCI) limits the transmission performance. By suppressing the CCI, the uplink transmission performance can be improved an...

I. INTRODUCTION Critical real-time systems such as those deployed in space, aerospace, transport, and medical applications require guarantees that the probability of the system failing to meet its timing constraints is below an acceptable threshold (e.g. a failure rate of less than 10

In this paper, we propose an algorithm for adaptation layer in order to improve fairness in bandwidth allocation among different traffic classes in IP/MPLS networks under heavy traffic load. We propose a definition of the blocking frequency of traffic flows at the entry of autonomous network domain and proportional-priority coefficient per traffic class and use them as the input parameters of t...

A JFET-based circuit for realizing a precision and linear floating voltage-controlled resistance (VCR) is presented for use in analog multipliers and programmable analog circuits and as a resistance mirror. It uses a matched JFET pair along with an op amp based negative feedback for realizing a precision resistance and a feedback of the source and drain voltages to the gate for realizing a line...

To enhance the optimization ability of quantumbehaved particle swarm optimization algorithm, some improvement measures are proposed. First, we propose a encoding approach based on qubits described on Bloch sphere. This approach makes each particle contain three groups of Bloch coordinates of qubits, and all three groups of coordinates are regarded as approximate solutions describing optimizatio...

Compressive Sensing (CS) has demonstrated to be particularly adapt for dealing with the directions-of-arrival (DoAs) estimation of electromagnetic signals impinging on an array of sensors. Unlike deterministic CS methods, the Bayesian CS (BCS) allows to overcome some theoretical limitations of the CS, such to enable a reliable and versatile DoAs estimation tool able to work with different array...

In this paper, for the first time, an analytic model is built to derive broadcast packet reception ratios (PRRs) in IEEE 802.11 based general two-dimensional (2-D) mobile ad-hoc networks (MANETs). First, the reception probability that a node within transmission range of a sending node receives the broadcast message successfully is computed. Then, the PRRs are derived through integration of the ...