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Broadband power-line communications: The channel capacity analysis
University of Dar es Salaam, Tanzania.
Uppsala University.
Uppsala University.ORCID iD: 0000-0002-1607-2493
University of Dar es Salaam, Dar es Salaam, Tanzania.
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2008 (English)In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 0885-8877, Vol. 23, no 1, 164-170 p.Article in journal (Refereed) Published
Abstract [en]

The power line has been proposed as a solution to deliver broadband services to end users. Various studies in the recent past have reported a decrease in channel capacity with an increase-in the number of branches for a given channel type whether it is an indoor or low-voltage (LV) or medium-voltage (MV) channel. Those studies, however, did not provide a clear insight as to how the channel capacity is related to the number of distributed branches along the line. This paper attempts to quantify and characterize the effects of channel capacity in relation to the number of branches and with different terminal loads for a given type of channel. It is shown that for a power spectral density (PSD) between -90 dBm/Hz to - 30 dBm/Hz, the channel capacity decreases by a 20-30 Mb/s/branch, 14-24 Mb/s/branch, and a 20-25 Mb/s/branch for an MV channel, LV channel, and indoor channel, respectively. It is also shown that the channel capacity is minimum when the load impedance is terminated in characteristic impedances for any type of channel treated here. It is shown that there could be a significant loss in channel capacity if a ground return was used instead of a conventional adjacent conductor return. The analysis presented in this paper would help in designing appropriate power-line communication equipment for better and efficient data transfer.

Place, publisher, year, edition, pages
2008. Vol. 23, no 1, 164-170 p.
Keyword [en]
branched network, broadband power line, channel capacity, frequency response, indoor channel, low-voltage (LV) channel, medium-voltage (MV) channel, multipath, power-line channel, transfer function
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-62547DOI: 10.1109/TPWRD.2007.911001ISI: 000252059100020OAI: diva2:480885
QC 20120201Available from: 2012-01-20 Created: 2012-01-19 Last updated: 2012-02-01Bibliographically approved

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Thottappillil, Rajeev
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