Features and Performance of 12PM3 Modulation Methods for Digital Land Mobile Radio

A number of continuous-phase modulation methods suitable for digital and mobile radio applications has been grouped in a common class, which has been named 12PM3 (12-state, phase modulation with correlation over three consecutive bits). This paper introduces the definition of this class of modulatio...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal on selected areas in communications 1987-06, Vol.5 (5), p.906-914, Article 906
Main Authors: Muratore, F., Palestini, V.
Format: Article
Language:English
Subjects:
Additive white noise
Applied sciences
AWGN
Circuits
Continuous phase modulation
Digital modulation
Exact sciences and technology
Frequency
Land mobile radio
Maximum likelihood estimation
Phase modulation
Radiocommunications
Receivers
Telecommunications
Telecommunications and information theory
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A number of continuous-phase modulation methods suitable for digital and mobile radio applications has been grouped in a common class, which has been named 12PM3 (12-state, phase modulation with correlation over three consecutive bits). This paper introduces the definition of this class of modulation schemes, and presents some of its features. With reference to the scheme that gives the best spectral compactness, some effects of typical implementation imperfections of the modulation circuits are discussed. The performance of some 12PM3 modulators associated with a frequency discrimination receiver is then computed with reference to both AWGN (additive white Gaussian noise) channels and the typical propagation conditions envisaged for SCPC/FDMA digital land mobile radio systems in urban environment. The adopted pre and postdiscrimination filters of the receiver are optimized for the best performance. Different decision techniques are considered, namely 2-TH (2-threshold), 4-TH, mixed 2-TH/4-TH and MLSE (maximum-likelihood sequence estimation) techniques.
ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.1987.1146596