Characterization of Time Variation of the Powerline Channel Frequency Response Simultaneously with Impulsive Noise

Avril, Gautier; Gauthier, F.; Moulin, F.; Zeddam, A.; Nouvel, Fabienne

doi:10.1109/isplc.2007.371146

Cited by 8 publications

(4 citation statements)

References 7 publications

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“…By changing the integration variable, v = s + w, the so-far used expression of the input autocorrelation is obtained (24) which lead to a valuable intermediate result that connects the autocorrelation of the output and input signals. Taking into account the CS nature of X (t), function R X (s, s + w) can be expanded in a FS by means of (7) to yield (25), where a change in the integration variable r = t − s has been made.…”

Section: Cyclostationary Signals and Lti Systemsmentioning

confidence: 99%

“…The expression in (25) has the form of a FS of the output signal autocorrelation, R Y (s, s + w), whose coefficients are…”

Section: Cyclostationary Signals and Lti Systemsmentioning

confidence: 99%

“…PLC channels exhibit also other kind of time variations due to the usage of appliances leading to relevant changes in the channel characteristics [24]. In [25], the relation between these long-term channel variations and the appearance of strong impulsive noise events is studied. Those are attributed to load changes in the power network, due to the connection and disconnection of appliances.…”

Section: Introductionmentioning

confidence: 99%

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Cyclic Signals and Systems in Power Line Communications

et al. 2019

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This paper provides a comprehensive discussion about the characteristics of power line communication (PLC) channels related to its synchronization with the mains period. This fact constitutes an interesting and distinguishing feature of these kind of channels. Under the mains voltage presence, the behavior of some loads connected to the power network allows representing the transmission medium as a linear periodically time varying (LPTV) system. Some components in the received noise exhibit periodicity as well, in terms of impulsive waveforms synchronized with the mains period and other cyclostationary (CS) signals. This fact has been taken into account in the design of PLC systems, for instance by defining medium access control (MAC) frames synchronized with the mains period and by adapting the modulation to the cyclic signal-to-noise ratio (SNR) to improve the system performance. Hence, in PLC, it is of particular interest to describe the general relations of LPTV systems and CS signals when both have a common period, which is the purpose of this work. It is not aimed at providing new mathematical tools for the analysis of these cyclic signals and systems, which have been extensively developed over the last five decades, but to serve the readers of the PLC community more accessible mathematical relations that can be applied to the practical problems they have to face. A review of recent works dealing with the cyclic properties of PLC channels and transmission techniques aware of these strategies is included as well.INDEX TERMS Cyclostationary random signals, time-varying systems, LPTV, power line communications.

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Section: Cyclostationary Signals and Lti Systemsmentioning

confidence: 99%

“…The expression in (25) has the form of a FS of the output signal autocorrelation, R Y (s, s + w), whose coefficients are…”

Section: Cyclostationary Signals and Lti Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Cyclic Signals and Systems in Power Line Communications

et al. 2019

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“…An encoder of a parallel concatenation (PCCC) of typically two systematic is used [Moreira 06]. Which consists of recursive convolutional codes ("constituent codes") separated by an interleaver that randomizes the order of presentation of information bits to the second constituent encoder with respect to the first constituent encoder, see Figure (7). The two encoders are identical and built based on the RSC encoder of Figure (8).…”

Section: Encoding Operation Layer Designmentioning

confidence: 99%

Broadband cable access networks for triple play services : source-destenation

Khamiss¹

2012

AJER

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This paper evaluates the performance of sending Triple play Services over hybrid networks. The network performance factors will be considered by observing the network`s availability, packet loss, delay and throughput. These evaluations will be tested over different network scenario, where the last mile media services suggested to be delivered over telephone twisted pair by means of using ADSL. The attention will be concerned for services over cable, where a proposal of using bandwidth efficient turbo trellis coded modulation (TTCM) in ADSL DMT systems instead of the multidimensional 16-state Trellis Coded Modulation (MTCM) that is given as an option in Asymmetric Digital Subscriber Lines (ADSL) standard based on discrete multitone (DMT) techniques. The results show that by using turbo codes, it can obtain 6 dB coding gain for a bit error rate (BER) of 10-6 in AWGN channels and more than 6.8 dB coding gain for a BER of 10-7 using a concatenated coding scheme.

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Improvement of indoor power line channel response

Roblot

Zeddam

2008

2008 IEEE International Symposium on Power Line Communications and Its Applications

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Characterization of Time Variation of the Powerline Channel Frequency Response Simultaneously with Impulsive Noise

Cited by 8 publications

References 7 publications

Cyclic Signals and Systems in Power Line Communications

Cyclic Signals and Systems in Power Line Communications

Broadband cable access networks for triple play services : source-destenation

Improvement of indoor power line channel response

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