Computability constraints in space-time delta-sigma arrays

Author

Scholnik, Dan P. ; Coleman, Jeffrey O.

Author_Institution

Naval Res. Lab., Washington, DC, USA

Volume

2

fYear

2001

fDate

4-7 Nov. 2001

Firstpage

1283

Abstract

Modern array-based RF systems require linear amplification to preserve the spectral integrity of simultaneously transmitted signals. Delta-sigma modulation jointly in space and time has been proposed to provide this linearity when paired with an emerging class of high-power switches. Since delta-sigma modulation involves a feedback loop, computability requirements restrict the class of possible loop filters. We examine several different computability restrictions and their effect on system performance in terms of quantization noise suppression and parallelization.

Keywords

filtering theory; noise; quantisation (signal); radiofrequency amplifiers; sigma-delta modulation; switches; array-based RF systems; computability constraints; delta-sigma modulation; feedback loop; high-power switches; linear amplification; loop filters; parallelization; quantization noise suppression; space-time delta-sigma arrays; space-time modulation; spectral integrity; system performance; Concurrent computing; Delta-sigma modulation; Feedback loop; Filters; Linearity; Quantization; RF signals; Radio frequency; Switches; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2001. Conference Record of the Thirty-Fifth Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-7147-X

Type

conf

DOI

10.1109/ACSSC.2001.987697

Filename

987697