Accession Number:

AD0745353

Title:

Investigation of the Feasibility of a 9600 BPS CODEM.

Descriptive Note:

Final rept.,

Corporate Author:

GENERAL ATRONICS CORP PHILADELPHIA PA

Personal Author(s):

• Chase,David
• Harper,Robert C.
• Zaborowski,John , Jr

Report Date:

1971-01-01

Pagination or Media Count:

75.0

Abstract:

The CODEM system has been evaluated for HF data transmission under a completed study and simulation contract to Naval Air Systems Command. The system designed and evaluated under this contract promises to provide a data transmission rate of 4800 bps over a double sideband HF channel with better transmission reliability than a TADIL-A modem operating at 2400 bps in dual diversity. Author

Descriptors:

• *CODING
• *COMMUNICATION AND RADIO SYSTEMS
• DATA TRANSMISSION SYSTEMS
• HIGH FREQUENCY
• DECODING
• MULTIPATH TRANSMISSION
• TRANSFORMATIONS(MATHEMATICS)
• AMPLITUDE MODULATION
• PHASE MODULATION
• VOICE COMMUNICATIONS
• ATTENUATION
• SIGNAL TO NOISE RATIO
• ALGORITHMS
• STATISTICAL ANALYSIS
• SECURE COMMUNICATIONS
• FEASIBILITY STUDIES

Subject Categories:

• Cybernetics
• Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE