Title :
Discrete wavelet packet based multitone modulation for transmitting complex symbols
Author :
Adhikary, T.K. ; Reddy, V.U.
Author_Institution :
Dept. of Electr. Commun. Eng., Indian Inst. of Sci., Bangalore, India
Abstract :
Multicarrier modulation (MCM) methods have been attracting considerable attention lately. In this paper, we address MCM techniques based on wavelet packets for QAM (quadrature amplitude modulation) and PM (phase modulation) symbol constellations. We first discuss the design of complex wavelet packets, which serve as orthonormal carriers for MCM, and then describe a DWMT (discrete wavelet multitone) scheme for transmitting QAM and PM symbols. We consider both blind and non-blind schemes for retrieving the symbols at the receiver. Simulations have been carried out to study the performance with both the schemes.
Keywords :
discrete wavelet transforms; phase modulation; quadrature amplitude modulation; DWMT scheme; MCM methods; PM symbols; QAM; complex symbols transmission; complex wavelet packets; discrete wavelet multitone scheme; discrete wavelet packet; multicarrier modulation methods; multitone modulation; nonblind schemes; phase modulation symbol constellations; quadrature amplitude modulation; Blind equalizers; Frequency modulation; Noise; Quadrature amplitude modulation; Wavelet packets;
Conference_Titel :
Signal Processing Conference (EUSIPCO 1998), 9th European
Conference_Location :
Rhodes
Print_ISBN :
978-960-7620-06-4
