Wavelet packet modulation for orthogonally multiplexed communication

Author

Lindsey, A.R.

Author_Institution

Radio Commun. Branch, Rome Lab., NY

Volume

45

Issue

5

fYear

1997

fDate

5/1/1997 12:00:00 AM

Firstpage

1336

Lastpage

1339

Abstract

Utilizing multidimensional signaling techniques, a generalized multirate wavelet-based modulation format for orthogonally multiplexed communication systems is presented. Wavelet packet modulation (WPM) employs the basis functions from an arbitrary pruning of a dyadic tree structured filter bank as orthogonal pulse shapes for conventional quadrature amplitude modulation (QAM) symbols. This generalized framework affords an entire library of basis sets with increased flexibility in time-frequency (T-F) partitioning. The bandwidth efficiency and power spectral density figures of merit for the general signal are derived and shown to be that of standard QAM

Keywords

band-pass filters; filtering theory; multiplexing; quadrature amplitude modulation; telecommunication signalling; time-frequency analysis; wavelet transforms; QAM; arbitrary pruning; bandwidth efficiency; basis functions; dyadic tree structured filter bank; generalized multirate wavelet-based modulation; multidimensional signaling techniques; orthogonal pulse shapes; orthogonally multiplexed communication; power spectral density; quadrature amplitude modulation; time-frequency partitioning; wavelet packet modulation; Amplitude modulation; Filter bank; Libraries; Multidimensional systems; Pulse modulation; Pulse shaping methods; Quadrature amplitude modulation; Shape; Time frequency analysis; Wavelet packets;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.575704

Filename

575704