The Effects of Multipath on OFDM Systems for Broadband Power-Line Communications a Case of Medium Voltage Channel
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.
[1] J. Anatory, N. Theethayi, R. Thottappillil, M. M. Kissaka, and N. H.
Mvungi, "The influence of load impedance, line length and branches on
underground cable power-line communications (PLC) systems," IEEE
Trans. Power Del., vol. 23, no. 1, pp. 180-187, Jan. 2008.
[2] J. Anatory, N. Theethayi, R. Thottappillil, M. M. Kissaka, and N. H.
Mvungi, "The effects of load impedance, line length and branches in the
BPLC-transmission lines analysis for medium voltage channel," IEEE
Trans. Power Del., vol. 22, no. 4, pp. 2156-2162, Oct. 2007.
[3] J. Anatory, N. Theethayi, R. Thottappillil, M. M. Kissaka, and N. H.
Mvungi, "The effects of load impedance, line length and branches in the
BPLC-transmission lines analysis for indoor voltage channel," IEEE
Trans. Power Del., vol. 22, no. 4, pp. 2150-2155, Oct. 2007.
[4] R. Prasad, OFDM for Wireless Communications Systems, Boston, MA,
Artech House, 2004.
[5] P. Amirshahi, and M. Kavehrad, "High-Frequency Characteristics of
Overhead Multiconductor Power Lines for Broadband
Communications", IEEEE Journal on Selected Areas in
Communications, Vol. 24, No. 7, July 2006, pp. 1292-1303.
[6] M. Babic, J. Baush, T. Kistner and K. Dostert, "Performance Analysis of
Coded OFDM Systems at Statistically Representative PLC Channels,
IEEE-ISPLC 2006, , pp 104-109, Orlando, FL, 2006.
[7] J. Anatory, M.M. Kissaka and N.H. Mvungi, "Channel Model for
Broadband Powerline Communication", IEEE Trans. On Power
Delivery, Vol. 22, no. 1, January 2007, pp. 135-141.
[8] J. Anatory, N. Theethayi, R. Thottappillil, M.M. Kissaka and N.H.
Mvungi, "An Experimental Validation for Broadband Power-Line
Communication (BPLC) Model", IEEE Transactions on Power Delivery,
Vol. 23, no. 3, July 2008, pp. 1380-1383.
[9] T. Fukami, D. Umehara, M. Kawai, and Y. Morihiro, "Noncoherent PSK
Optimum Receiver over Impulsive Noise Channels", International
Sympoium of Information Theory and Its Applications 2002, Xi-an,
PRC, pp. 235-238, Oct. 2002.
[10] D. Middleton, .Statistical-physical model of electromagnetic
interference, IEEE Trans. Electromagnetic Compat., vol. EMC-19, no. 3,
pp. 106.126, August 1977.
[11] J. G. Proakis, "Digital Communications" McGraw-Hill International
Edition, Fourth Edition, 2001.
[12] P. Amirshashi, S. M. Navidpour and M. Kavehrad, "Performance
Analysis of Uncoded and Coded OFDM Broadband Transmission Over
Low Voltage Power-Line Channels with Impulsive Noise, IEEE
Transactions on Power Delivery, Vol. 21, No. 4, October, 2006.
[13] L. Ahlin, J. Zander and B. Slimane, Principles of Wireless
Communications", Denmark Narayana Press, 2006.
[14] L. Litwin and M, Pugel, "The Principles of OFDM", www.
Rfdesign.com, 2001.
[15] A. Goldsmith, Wireless Communications, Cambridge University Press,
2005.
[1] J. Anatory, N. Theethayi, R. Thottappillil, M. M. Kissaka, and N. H.
Mvungi, "The influence of load impedance, line length and branches on
underground cable power-line communications (PLC) systems," IEEE
Trans. Power Del., vol. 23, no. 1, pp. 180-187, Jan. 2008.
[2] J. Anatory, N. Theethayi, R. Thottappillil, M. M. Kissaka, and N. H.
Mvungi, "The effects of load impedance, line length and branches in the
BPLC-transmission lines analysis for medium voltage channel," IEEE
Trans. Power Del., vol. 22, no. 4, pp. 2156-2162, Oct. 2007.
[3] J. Anatory, N. Theethayi, R. Thottappillil, M. M. Kissaka, and N. H.
Mvungi, "The effects of load impedance, line length and branches in the
BPLC-transmission lines analysis for indoor voltage channel," IEEE
Trans. Power Del., vol. 22, no. 4, pp. 2150-2155, Oct. 2007.
[4] R. Prasad, OFDM for Wireless Communications Systems, Boston, MA,
Artech House, 2004.
[5] P. Amirshahi, and M. Kavehrad, "High-Frequency Characteristics of
Overhead Multiconductor Power Lines for Broadband
Communications", IEEEE Journal on Selected Areas in
Communications, Vol. 24, No. 7, July 2006, pp. 1292-1303.
[6] M. Babic, J. Baush, T. Kistner and K. Dostert, "Performance Analysis of
Coded OFDM Systems at Statistically Representative PLC Channels,
IEEE-ISPLC 2006, , pp 104-109, Orlando, FL, 2006.
[7] J. Anatory, M.M. Kissaka and N.H. Mvungi, "Channel Model for
Broadband Powerline Communication", IEEE Trans. On Power
Delivery, Vol. 22, no. 1, January 2007, pp. 135-141.
[8] J. Anatory, N. Theethayi, R. Thottappillil, M.M. Kissaka and N.H.
Mvungi, "An Experimental Validation for Broadband Power-Line
Communication (BPLC) Model", IEEE Transactions on Power Delivery,
Vol. 23, no. 3, July 2008, pp. 1380-1383.
[9] T. Fukami, D. Umehara, M. Kawai, and Y. Morihiro, "Noncoherent PSK
Optimum Receiver over Impulsive Noise Channels", International
Sympoium of Information Theory and Its Applications 2002, Xi-an,
PRC, pp. 235-238, Oct. 2002.
[10] D. Middleton, .Statistical-physical model of electromagnetic
interference, IEEE Trans. Electromagnetic Compat., vol. EMC-19, no. 3,
pp. 106.126, August 1977.
[11] J. G. Proakis, "Digital Communications" McGraw-Hill International
Edition, Fourth Edition, 2001.
[12] P. Amirshashi, S. M. Navidpour and M. Kavehrad, "Performance
Analysis of Uncoded and Coded OFDM Broadband Transmission Over
Low Voltage Power-Line Channels with Impulsive Noise, IEEE
Transactions on Power Delivery, Vol. 21, No. 4, October, 2006.
[13] L. Ahlin, J. Zander and B. Slimane, Principles of Wireless
Communications", Denmark Narayana Press, 2006.
[14] L. Litwin and M, Pugel, "The Principles of OFDM", www.
Rfdesign.com, 2001.
[15] A. Goldsmith, Wireless Communications, Cambridge University Press,
2005.
@article{"International Journal of Electrical, Electronic and Communication Sciences:52035", author = "Justinian Anatory and N. Theethayi and R. Thottappillil and C. Mwase and N.H. Mvungi", title = "The Effects of Multipath on OFDM Systems for Broadband Power-Line Communications a Case of Medium Voltage Channel", 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.
", keywords = "Communication channel model, Power-line communication, Transfer function, Multipath, Branched network, OFDM, QAM, performance evaluation", volume = "3", number = "6", pages = "1275-4", }
