Accession Number:

ADA179088

Title:

Theoretical Background for Modeling on Non-Stationary Channels.

Descriptive Note:

Technical rept. 1 Jul 84-31 Aug 85,

Corporate Author:

MISSION RESEARCH CORP SANTA BARBARA CA

Personal Author(s):

Report Date:

1985-11-01

Pagination or Media Count:

38.0

Abstract:

Models of randomly time-variant, frequency-selective, communication channels commonly employ statistical representations of channel input-output system functions, such as the time-variant impulse response or the time-variant transfer function, with Gaussian first order statistics. The additional assumption that the channel is WSSUS, that is, the second order statistics of the channel system functions are wide-sense stationary in time or equivalently uncorrelated in Doppler and uncorrelated in delay or equivalently wide-sense-stationary in carrier frequency, lead to simple and elegant doubly-stationary channel model formulations. The assumption of double-stationarity holds for a very diverse range of narrow-band channels, and the Gaussian-WSSUS model has received much attention and use. The applicability of such a mode to some advanced modem concepts of current interest, such as meteor burst links and wideband HF communication techniques, however, cannot always be justified. Keywords Striations Power Spectra.

Subject Categories:

  • Radio Communications
  • Non-Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE