Title :
On fuzzy-DFE-LMS and fuzzy-DFE-RLS algorithms to equalize power line channels
Author_Institution :
Campinas State Univ., Brazil
Abstract :
This paper presents the DFE-Fuzzy-LMS and DFE-Fuzzy-RLS algorithms for equalization of power line channels (PLC) and for the improvement on the data transmission rates. Both proposals are DFE (decision feedback equalizer) versions of the adaptative singleton type 1 fuzzy algorithms initially proposed by J.M. Mendel. One of the most important characteristics of the proposals are their inherent capability to equalizer minimum, non-minimum and maximum phase channels and deal with higher power impulsive noises. The impulsive noise is one of the major problems concerning PLC channels. The Fuzzy-DFE-LMS technique applied to minimize both influences of the intersymbol interferences and impulsive noises shows better results than the traditional adaptive and previous fuzzy equalizers when the OFDM is employed as a multicarrier transmission technique.
Keywords :
carrier transmission on power lines; decision feedback equalisers; fuzzy control; impulse noise; least mean squares methods; DFE-Fuzzy-LMS; DFE-Fuzzy-RLS algorithms; adaptative singleton; channel equalization; data transmission rates; decision feedback equalizer; intersymbol interferences; least mean square methods; power impulsive noises; power line channels; Adaptive equalizers; Context; Data communication; Decision feedback equalizers; Fuzzy systems; OFDM modulation; Phase noise; Programmable control; Proposals; Quadrature amplitude modulation;
Conference_Titel :
Industrial Electronics, 2003. ISIE '03. 2003 IEEE International Symposium on
Print_ISBN :
0-7803-7912-8
DOI :
10.1109/ISIE.2003.1267959