Practical blind demodulators for high-order QAM signals

Author

Treichler, John R. ; Larimore, Michael G. ; Harp, Jeffrey C.

Author_Institution

Appl. Signal Technol. Inc., Sunnyvale, CA, USA

Volume

86

Issue

10

fYear

1998

fDate

10/1/1998 12:00:00 AM

Firstpage

1907

Lastpage

1926

Abstract

This paper examines the problem of demodulating time dispersed digitally modulated signals with particular emphasis on two aspects: the all-digital implementation of such demodulators and the use of “blind” algorithms for initializing the demodulator in the absence of explicit training by the transmitter. The factors impacting the architecture of blind demodulators are discussed, followed by a description of several practical implementations

Keywords

VLSI; adaptive equalisers; cable television; demodulators; digital radio; digital signal processing chips; microwave links; modems; quadrature amplitude modulation; DSP chip-based designs; VLSI; all-digital implementation; blind adaptive equalization; blind algorithms; digital cable television; digital microwave radio signals; digital signal processor; digital transmission systems; high-order QAM signals; modulator architecture; practical blind demodulators; receiver; time dispersed digitally modulated signals; very large scale integration; voiceband modems; Adaptive equalizers; Blind equalizers; Data communication; Demodulation; Digital modulation; Modems; Quadrature amplitude modulation; Radio transmitters; Signal design; Signal processing algorithms;

fLanguage

English

Journal_Title

Proceedings of the IEEE

Publisher

ieee

ISSN

0018-9219

Type

jour

DOI

10.1109/5.720245

Filename

720245