The Effects of Multipath on OFDM Systems for Broadband Power-Line Communications a Case of Medium Voltage Channel
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Date
2009
Journal Title
Journal ISSN
Volume Title
Publisher
World Academy of Science, Engineering and Technology
Abstract
Power-line networks are widely used today for
broadband data transmission. However, due to multipaths within the
broadband power line communication (BPLC) systems owing to
stochastic changes in the network load impedances, branches, etc.,
network or channel capacity performances are affected. This paper
attempts to investigate the performance of typical medium voltage
channels that uses Orthogonal Frequency Division Multiplexing
(OFDM) techniques with Quadrature Amplitude Modulation (QAM)
sub carriers. It has been observed that when the load impedances are
different from line characteristic impedance channel performance
decreases. Also as the number of branches in the link between the
transmitter and receiver increases a loss of 4dB/branch is found in the
signal to noise ratio (SNR). The information presented in the paper
could be useful for an appropriate design of the BPLC systems.
Description
http://waset.org/publications/2909/the-effects-of-multipath-on-ofdm-systems-for-broadband-power-line-communications-a-case-of-medium-voltage-channel
Keywords
Communication channel model, Power-line communication, Transfer function, Multipath, Branched network, OFDM, QAM, performance evaluation
Citation
Anatory, J. ; Theethayi, N. ; Thottappillil, R. ; Mwase, C. ; Mvungi, N. (2009), 'The Effects of Multipath on OFDM Systems for Broadband Power-Line Communications a Case of Medium Voltage Channel', World Academy of Science, Engineering and Technology, International Science Index 30, International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering, 3(6), 1272 - 1275.