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This paper presents an application of statistical mechanics for analysis of critical phenomena in complex networks. Using the simulation model of a wired communication grid, the nature of phase transition is characterized and the corresponding critical exponent is computed. Network analogs of thermodynamic quantities such as order parameter, temperature, pressure, and composition are defined and the...
This paper presents CARP, an integrated program and storage replication solution. CARP extends program replication systems which do not currently address storage errors, builds upon a record-and-replay scheme that handles nondeterminism in program execution, and uses a scheme based on recorded program state and I/O logs to enable efficient detection of silent data errors and efficient recovery from...
Efficacy of proliferation of commercial wireless networks can be substantially enhanced through large scale cooperation among different providers. If a group of providers cooperate by allowing customers to be served by the resources of the whole group rather than just those of their own providers, they have the potential to utilize their resources more efficiently and enhance the quality of service...
Stimulated Raman Scattering crosstalk in intensity modulated WDM system is analyzed, including an exact probability density function (pdf) of the power depletion. Bit error rate due to SRS crosstalk in a WDM receiver have been calculated and the effects of the channel number (N) and the receiver noise have been studied. The choise of detection threshold for the improved performance of the receiver...
In this paper, bit error rate and power penalty in a WDM receiver system in the presence of component crosstalk with finite interferers are studied using a simplified analysis and some optimum detection thresholds are suggested for minimum bit error rate. Error probabilities are calculated considering a unipolar bit stream of optical signals at the receiver input. Probability density function in the...
In industries such as banking, retail, transportation, and telecommunications, large software systems support numerous work processes and develop over many years. Throughout their evolution, such systems are subject to repeated debugging and feature enhancements. Consequently, they gradually deviate from the intended architecture and deteriorate into unmanageable monoliths. To contend with this, practitioners...
In this paper, the development of a temperature-dependent large signal model, with scalable device sizes at millimeter-wave frequencies, for 90 nm CMOS has been described. The method of incorporating parasitics and internal model parameters as polynomial functions of temperature and device size has been demonstrated and validated for the first time. Extensive model validation was performed by implementing...
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