Accession Number : ADP006136

Title :   Measurement, Modeling, and Simulation of LOS Microwave Channels,

Corporate Author : NATIONAL TELECOMMUNICATIONS AND INFORMATION ADMINISTRATION BOULDER CO INST FO R TELECOMMUNICATION SCIENCES

Personal Author(s) : Hoffmeyer, James A. ; Vogler, Lewis E.

Report Date : MAY 1987

Pagination or Media Count : 16

Abstract : This paper begins with a brief summary of prior work in the field of microwave line-of-sight (LOS) channel propagation measurements, channel models, and channel simulators. The objective of these efforts is the reliable prediction of digital microwave radio performance on any specified link. The ideal channel simulator is one that operates at rf, operates under computer control, is dynamic, simulates both minimum and nonminimum phase distortions, and has a dual channel capability for the comparative evaluation of space and frequency diversity radios. Significant parameters of this ideal simulator should be based on a model that has been validated through propagation measurements on different representative paths. Although much progress has been made, a number of issues remain. The work in the area of channel simulation, propagation measurements, and modeling is described. Together with channel measurement programs currently under way by ITS, this work should be helpful in the resolution of many of the remaining issues.

Descriptors :   *RADIO LINKS, MICROWAVES, LINE OF SIGHT, MULTIPATH TRANSMISSION, FADING(ELECTROMAGNETIC WAVES), SIMULATION, DIGITAL COMMUNICATIONS, SYMPOSIA.

Subject Categories : Radiofrequency Wave Propagation
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE