Title :
Searching better wavelet packet tree for ISI and ICI reduction in WOFDM
Author :
Kumbasar, Volkan ; Kucur, Oguz
Author_Institution :
Electron. Eng. Dept., Gebze Inst. of Technol., Gebze
Abstract :
In this work, better wavelet packet tree structures are searched to reduce the sum of ISI and ICI powers (integrated power) in Daubechies wavelet-based OFDM system over a practical two path low-voltage powerline channel or two way multipath channel. Better wavelet tree structures are obtained by using a brute-force algorithm. Results show that better wavelet packet tree structures perform better than conventional Mallat structures for the same bandwidth occupancy.
Keywords :
OFDM modulation; multipath channels; trees (mathematics); wavelet transforms; Daubechies wavelet-based OFDM system; ICI reduction; ISI reduction; Mallat structures; WOFDM; bandwidth occupancy; brute-force algorithm; integrated power; low-voltage powerline channel; multipath channel; wavelet packet tree structures; wavelet tree structures; Bandwidth; Bit error rate; Discrete Fourier transforms; Discrete wavelet transforms; Filter bank; Intersymbol interference; OFDM modulation; Power system modeling; Tree data structures; Wavelet packets;
Conference_Titel :
Wireless Telecommunications Symposium, 2009. WTS 2009
Conference_Location :
Prague
Print_ISBN :
978-1-4244-2588-4
Electronic_ISBN :
1934-5070
DOI :
10.1109/WTS.2009.5068976
