An Experimental Test Loop to Assist in Designing Digital Microwave Radio Systems

Author

Aamo, Kjell

Author_Institution

Norwegian Institute of Technology, Trondheim, Norway

Volume

27

Issue

12

fYear

1979

fDate

12/1/1979 12:00:00 AM

Firstpage

1968

Lastpage

1971

Abstract

An experimental method for the study and trial of $N$ -hop digital microwave radio systems is described. The method is particularly useful for those systems where the different disturbances accumulate and do not occur on each hop on an independent basis. The method simulates a digital transmission system by generating an information sequence of $m$ bits at a rate of fbbits/s and circulating the sequence $N$ times through one regenerator and a coaxial cable loop having a time delay $\\tau > m/f_{b}$ . The circulating loop can be employed to investigate the influence on noise and error rate in digital radio systems of factors such as: cochannel and intersymbol interference; heavy rain attenuation on one or two repeater sections; additive noise; gain and phase nonlinearities; fading; changes in components and operating conditions within the regenerator; and combinations of these disturbances occurring simultaneously.

Keywords

Communication system measurements; Digital communications; Microwave radio communication; Additive noise; Coaxial cables; Delay effects; Digital communication; Error analysis; Intersymbol interference; Microwave theory and techniques; Phase noise; Rain; System testing;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOM.1979.1094373

Filename

1094373