Fuzzy equalized integrated system of visible free space optic (VFSO) and BPLC

A new integrated system of visible free space optic (VFSO) and broadband powerline communication (BPLC) that applies the concepts of fuzzy logic for channel equalization is proposed. Having used already installed powerline cables and white LEDs as a communication channel this system has the advantage of low cost and easy implementation for data transmission. In this system the created intersymbol interference (ISI) due to nonlinear distortions over the equivalent channel of VFSO and PLC is a considerable issue hindering further increase in the attainable data rate. In this work, the equivalent channel model for integrated system is developed and in order to mitigate the influences of high power impulsive noises and multipath distortion of BPLC channel, which are the main causes of ISI, besides channel coding and choosing discrete multitone (DMT) as a robust modulation schemes in case of ISI we designed adaptive fuzzy equalizer system. Then the performance of fuzzy equalized integrated system was compared by decision feedback (DF) equalized system in case of steady state BER and convergence speed of channel equalization. The attained results have shown that by incorporating appropriate linguistic rules which can be derived from training symbols the system performance would be improved.

[1]  H. Vincent Poor,et al.  Advanced signal processing for power line communications , 2003, IEEE Commun. Mag..

[2]  S. Randel,et al.  Broadband Information Broadcasting Using LED-Based Interior Lighting , 2008, Journal of Lightwave Technology.

[3]  H L Lutz,et al.  BANDWIDTH EFFICIENT POWER LINE COMMUNICATIONS BASED ON OFDM , 2000 .

[4]  M. Nakagawa,et al.  Performance evaluation of narrowband OFDM on integrated system of power line communication and visible light wireless communication , 2006, 2006 1st International Symposium on Wireless Pervasive Computing.

[5]  T. Taguchi,et al.  Technological innovation of high-brightness light emitting diodes (LEDs) and a view of white LED lighting system , 2000 .

[6]  Sayed Ehsan Alavi,et al.  Integrated system of visible free space optic with PLC , 2009, 2009 IEEE 9th Malaysia International Conference on Communications (MICC).

[7]  Jerry M. Mendel,et al.  Fuzzy adaptive filters, with application to nonlinear channel equalization , 1993, IEEE Trans. Fuzzy Syst..

[8]  Masao Nakagawa,et al.  Integrated system of white LED visible-light communication and power-line communication , 2002, The 13th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications.

[9]  Stefano Galli,et al.  Recent Developments in the Standardization of Power Line Communications within the IEEE , 2008, IEEE Communications Magazine.

[10]  Manfred Zimmermann,et al.  An Analysis of the Broadband Noise Scenario in Powerline Networks , 2006 .

[11]  M Zimmermann,et al.  A MULTI-PATH SIGNAL PROPAGATION MODEL FOR THE POWERLINE CHANNEL IN THE HIGH FREQUENCY RANGE , 1999 .

[12]  Ramjee Prasad,et al.  OFDM for Wireless Multimedia Communications , 1999 .

[13]  Masao Nakagawa,et al.  Indoor Visible Light Data Transmission System Utilizing White LED Lights , 2003 .

[14]  M. Kavehrad,et al.  Energy-efficient broadband data communications using white LEDs on aircraft powerlines , 2008, 2008 Integrated Communications, Navigation and Surveillance Conference.