Dynamic Characterization and Equalization of a Power Line Communication Channel

Light Emitting Diode (LED) lamps are used as a replacement of "old-fashioned" or incandescent lighting sources, as they reduce the amount of energy consumed. As a sideeffect of more efficient energy usage they produce electrical noise. This noise reduces the efficiency of information signal transfer when Power Line Communications (PLC) are used. This study focuses on the noise signatures of LED lamps which have a direct impact on the information transfer of the PLC channel. The contribution of this study is that two categories of noise characterisations are given. First is equations describing the maximum and minimum bounds of the lamp noise current. This is useful in calculating channel throughput where an equation for the noise is required. For example, the Shannon-Hartley theorem. Second is a methodology to determine individual frequencies in the spectrum of harmonics emanating from the lamp. Both these characterisations will aid in designing communication schemes for PLC. An unexpected result of this study was to find LED lamps which had inadequate or no Electromagnetic Interference (EMI) filters. These lamps produce noise in orders of magnitude higher than properly filtered LED lamps.

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“…It has carrier frequencies typically up to 30 MHz [8]. For further investigation, readers are referred to [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

LED Lighting and the Impact on the PLC Channel

Emleh¹,

Ferreira²,

Vinck³

2021

Adv. sci. technol. eng. syst. j.

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Femtocell base station clustering and logistic smooth transition autoregressive‐based predicted signal‐to‐interference‐plus‐noise ratio for performance improvement of two‐tier macro/femtocell networks

Lotfollahzadeh¹,

Kabiri²,

Kalbkhani³

et al. 2016

IET signal process.

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The aim of this study is to improve the performance of two-tier macro/femtocell networks using a power control approach. In wireless networks, power control plays an important role in improving a number of performance parameters such as co-channel interference and outage probability reduction, throughput increasing, and power saving. This study explores the evolution of centralised power control algorithm based on femtocell base station (FBS) clustering and predicted signal-to-interference-plus-noise ratio (SINR) of users. To reduce the computational complexity of centralised algorithm, dense deployed femtocells are considered in different clusters. In this case, femtocells inside one cluster make considerable interference to each other, while the interferences from femtocells of other clusters are negligible. Moreover, because of the non-linearity of SINR samples, non-linear logistic smooth transition autoregressive (LSTAR) model is used to model the SINR data, and then the next SINR samples are predicted from the previous samples. A c c o r d i n gt ot h ec l u s t e r e dF B S sa n dp r e d i c t e dS I N R ,t h e proposed power control scheme is applied to femtocell network in the downlink. The results demonstrate that the introduced method improves the outage probability and throughput and outperforms previous methods significantly.

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Diagnostics subspace identification method of linear state‐space model with observation outliers

AlMutawa

2017

IET signal process.

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The authors propose a diagnostic technique for the state‐space model fitting of time series by deleting some observations and measuring the change in the parameter estimates. They consider this approach in order to distinguish an observational outlier from an innovational one. Thus, they present a robust subspace identification algorithm that is less sensitive to outliers. A Monte Carlo simulation for a vibrating structure model demonstrates the effectiveness of the proposed algorithm and its ability to detect outliers in the measurements as well as the dynamical state.

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Dynamic Characterization and Equalization of a Power Line Communication Channel

Cited by 4 publications

References 9 publications

LED Lighting and the Impact on the PLC Channel

LED Lighting and the Impact on the PLC Channel

Femtocell base station clustering and logistic smooth transition autoregressive‐based predicted signal‐to‐interference‐plus‐noise ratio for performance improvement of two‐tier macro/femtocell networks

Diagnostics subspace identification method of linear state‐space model with observation outliers

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