Accession Number:

ADA276449

Title:

Spread-Spectrum Radio Systems and Networks

Descriptive Note:

Final rept. 21 May 1991-20 Jul 1993

Corporate Author:

ILLINOIS UNIV AT URBANA-CHAMAPIGN

Report Date:

1993-10-25

Pagination or Media Count:

6.0

Abstract:

As part of the research completed under the subject contract, we showed that the effectiveness of error-control coding in a frequency-hop radio system can be in creased greatly by the use of side information developed in the radio receiver. For slow-frequency-hop transmission, the inclusion of test symbols in each dwell interval provides a simple method for the derivation of side information for that dwell interval. Requirements on the reliability of the side information are presented in 9 and 14, and their implications in determining the necessary number of test symbols per dwell interval are described. When applied to a frequency-hop radio, concatenated coding provides a method for simultaneously achieving a larger communication range and greater protection against partial-band interference than can be obtained by systems without error-control coding or even most systems with a single form of coding

Subject Categories:

  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE