A Bandwidth Compressive Modulation System Using Multi-Amplitude Minimum Shift Keying (MAMSK)

Author

Weber, William J., III ; Stanton, Philip H. ; Sumida, Joe T.

Author_Institution

California Institute of Technology, Pasadena

Volume

26

Issue

5

fYear

1978

fDate

5/1/1978 12:00:00 AM

Firstpage

543

Lastpage

551

Abstract

A bandwidth compressive modem making use of multiamplitude minimum shift keying (MAMSK) has been designed and implemented in a laboratory environment at microwave frequencies. This system achieves a substantial bandwidth reduction over binary PSK and operates within 0.5 dB of theoretical performance. A number of easily implemented microwave transmitters have been designed to generate the required set of 16 signals. The receiver has been designed to work at 1 Mbit/s and contains the necessary phase tracking, AGC, and symbol synchronization loops as well as a lock detector, SNR estimator and provisions for differential decoding. This paper describes this entire system and presents the experimental results.

Keywords

APK modulation/demodulation; MSK modulation/demodulation; Microwave radio communication; Bandwidth; Frequency synchronization; Microwave frequencies; Microwave generation; Modems; Phase shift keying; Signal design; Signal generators; Tracking loops; Transmitters;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOM.1978.1094121

Filename

1094121