Title :
Complex wavelet packets for multicarrier modulation
Author :
Adhikary, Tushar K. ; Reddy, Vellenki U.
Author_Institution :
Dept. of Electr. Commun. Eng., Indian Inst. of Sci., Bangalore, India
Abstract :
We first discuss two approaches for designing complex wavelet packets which can be used as orthogonal carriers for modulations like QAM and PM, and then compare the performance of the wavelet packet based modulation scheme with that of discrete multitone modulation using DFT bases. The results show that the wavelet packet based scheme yields a lower average bit error probability compared to the DFT based scheme. The improved performance of the wavelet packet based scheme is because of the spectrally contained nature of the wavelet packet bases which are under the control of the designer
Keywords :
band-pass filters; discrete Fourier transforms; error statistics; filtering theory; probability; quadrature amplitude modulation; signal synthesis; wavelet transforms; DFT bases; PM; QAM; average bit error probability; complex wavelet packets design; cosine modulated filter bank; discrete multitone modulation; multicarrier modulation; orthogonal carriers; wavelet packet based modulation; Attenuation; Band pass filters; Design engineering; Design methodology; Discrete wavelet transforms; Error probability; Filter bank; OFDM modulation; Quadrature amplitude modulation; Wavelet packets;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.681816
