Navair 9600 Baud Radio Modem.
Abstract
This document presents the results of a theoretical investigation to determine the feasibility of developing a 9600 bit per second modem suitable for data transmission and reception on narrowband HF and UHF channels. Two modem techniques were considered: the Honeywell Digital Modulation System (HDMS) and the Automatically Real-Time Equalized Modem (ARTEM). The HDMS technique, which employs a form of correlated phase shift keying in a conventional FDM subchannel format, was found to be incapable of achieving reliable 9600 bit per second operation through the narrowband HF channel. The ARTEM technique, which employs single channel PAM-VSB modulation with automatic channel measurement and equalization, was found to hold great promise as a technique for achieving and desired 9600 bit per second operation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 30, 1969
- Accession Number
- ADA019839
Entities
Organizations
- Honeywell International, Inc.