Analysis of Power Lines Uncertain Parameter Influence on Power Line Communications

In this paper, we analyze the effects of power lines parameters' uncertainties on the efficiency of a powerline communication (PLC) system. An estimate of the upper and lower bounds' system response due to the uncertainties is given. The analyzed system is schematized as a connection of multiport devices described by their scattering parameter matrices and an adjoint method for sensitivity calculations, based on the use of a wavelet expansion, is used to determine the bounds. The wavelet based sensitivity analysis allows a direct determination of the time domain sensitivity avoiding computationally expensive convolution integral calculations; in addition a fast and accurate bounds calculation is obtained avoiding statistical Monte Carlo simulations. The bounds determination allows the estimate of noteworthy quantities for the tuning of currently used modulation schemes for PLC such as orthogonal frequency-division modulation.

[1]  Haifang Liao,et al.  Wave spreading evaluation of interconnect systems , 1995 .

[2]  Romano Fantacci,et al.  Comparison of CDMA and OFDM techniques for downstream power-line communications on low voltage grid , 2003 .

[3]  D. Sabolic,et al.  Signal propagation modeling in power-line communication networks , 2005, IEEE Transactions on Power Delivery.

[4]  E. Gunawan,et al.  Performance analysis of OFDM systems for broadband power line communications under impulsive noise and multipath effects , 2005, IEEE Transactions on Power Delivery.

[5]  Paolo Tiberio,et al.  Computer-Aided Analysis of Microwave Circuits , 1974 .

[6]  J. Nguimbis,et al.  A nonlinear equalization method based on multilayer perceptron for OFDM power-line communication , 2005, IEEE Transactions on Power Delivery.

[7]  J.W. Bandler,et al.  Adjoint techniques for sensitivity analysis in high-frequency structure CAD , 2004, IEEE Transactions on Microwave Theory and Techniques.

[8]  W. Cai,et al.  An adaptive wavelet method for nonlinear circuit simulation , 1999 .

[9]  Weng Cho Chew,et al.  A study of wavelets for the solution of electromagnetic integral equations , 1995 .

[10]  V. A. Monaco,et al.  Automatic Computation of Microwave Circuit Sensitivity Coefficients , 1971 .

[11]  T. Sarkar,et al.  Survey of numerical methods for solution of large systems of linear equations for electromagnetic field problems , 1981 .

[12]  D. Anastasiadou,et al.  Multipath characterization of indoor power-line networks , 2005, IEEE Transactions on Power Delivery.

[13]  I. Daubechies.  Ten Lectures on Wavelets , 1992 .

[14]  Yehuda Leviatan,et al.  Analysis of transient interaction of electromagnetic pulse with an air layer in a dielectric medium using wavelet-based implicit TDIE formulation , 2002 .

[15]  Klaus Dostert,et al.  A multipath model for the powerline channel , 2002, IEEE Trans. Commun..

[16]  S. Galli,et al.  A novel approach to the modeling of the indoor power line channel part I: circuit analysis and companion model , 2005, IEEE Transactions on Power Delivery.

[17]  M. Raugi,et al.  Transient numerical solutions of nonuniform MTL equations with nonlinear loads by wavelet expansion in time or space domain , 2000 .

[18]  V. A. Monaco,et al.  Network sensitivities in terms of scattering parameters , 1971 .

[19]  S. Barmada,et al.  Two-port equivalent of PCB discontinuities in the wavelet domain , 2005, IEEE Transactions on Microwave Theory and Techniques.

[20]  E. Gunawan,et al.  Modeling of transfer Characteristics for the broadband power line communication channel , 2004, IEEE Transactions on Power Delivery.

[21]  Andreas C. Cangellaris,et al.  S-parameter analysis of multiconductor, integrated circuit interconnect systems , 1992, IEEE Trans. Comput. Aided Des. Integr. Circuits Syst..

[22]  John W. Bandler,et al.  Wave Sensitivities of Networks , 1972 .

[23]  Stéphane Mallat,et al.  A Theory for Multiresolution Signal Decomposition: The Wavelet Representation , 1989, IEEE Trans. Pattern Anal. Mach. Intell..

[24]  Ronald A. Rohrer,et al.  Sensitivity computation in piecewise approximate circuit simulation , 1991, IEEE Trans. Comput. Aided Des. Integr. Circuits Syst..