Microwave Data Transmission Test Program - QPSK Modems.
Abstract
The objective of the Microwave Data Transmission Test Program - QPSK Modem, was to design, construct, and conduct systems tests on a 70 MHz Quadriphase Shift Keyed Modulator/Demodulator (Modem). The modem is designed to permit the conveyance of digital data traffic over conventional frequency division multiplex radios with a 70 MHz intermediate frequency. Data rates from 1.536 Mbps to 12.95 Mbps, in 1 Kbps increments can be accommodated by the QPSK Modem. This program was performed concurrently with a program to develop a modem with a baseband interface (Quaternary Baseband Modem). Of particular interest are the system test results including bit error rate as a function of received signal level and transmitted spectral occupancy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1974
- Accession Number
- ADA002840
Entities
People
- Benjamin Olevsky
- Christopher A. Miedziua
- Norman G. Jones
- Robert J. Konezelman