Generalized minimum shift-keying modulation techniques

Author

Sadr, Ramin ; Omura, Jim K.

Author_Institution

California Univ., Los Angeles, CA, USA

Volume

36

Issue

1

fYear

1988

fDate

1/1/1988 12:00:00 AM

Firstpage

32

Lastpage

40

Abstract

The simultaneous data demodulation and phase tracking of an MSK signal using the Viterbi algorithm is described, and two variations of MSK modulation are studied. The MSK with overlay is a dual-rate modulation techniques in which low-rate and high-rate data are superimposed on an MSK signal. Here the demodulator uses the Viterbi algorithm to estimate both the low-rate and high-rate data simultaneously. The MSK with pseudorandom sequence spreading combats intentional or unintentional jamming. A simplified receiver for these spread-spectrum MSK signals is found that takes into consideration the effect of random phase perturbations. The performance of these demodulators is evaluated using transfer-function bounds for the bit error probability. For demodulation of the spread spectrum MSK signal, a simplified receiver is derived, and its performance in the presence of continuous jamming is evaluated

Keywords

demodulation; jamming; minimum shift keying; signal detection; spread spectrum communication; MSK; Viterbi algorithm; bit error probability; data demodulation; dual-rate modulation; jamming; minimum shift-keying modulation techniques; phase tracking; pseudorandom sequence spreading; random phase perturbations; receiver; spread spectrum signals; transfer-function bounds; Continuous phase modulation; Demodulation; Jamming; Phase estimation; Phase modulation; Random sequences; Receivers; Spread spectrum communication; Time division multiple access; Viterbi algorithm;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.2726

Filename

2726