- TITLE:
-
Computability Constraints in Space-Time Delta-Sigma Arrays
- AUTHORS:
- Dan P. Scholnik
J. O. Coleman
- ABSTRACT:
- Modern array-based RF systems require linear
amplification to preserve the spectral integrity of
simultaneously transmitted signals. Recently
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.
- DOWNLOADABLE PREPRINT:
-
in PDF format (232K)
- STATUS:
- Presented at the 35th Asilomar
Conf. on Signals, Systems and Computers (ASILOMAR 2001),
Pacific Grove CA, USA, Nov. 4-7, 2001.