DocumentCode :
1655883
Title :
Distance spectrum of coded multi-amplitude CPM
Author :
Kandus, Gorazd ; Senk, Vojin ; Lazic, DeJan ; Despotovic, Miroslav
Author_Institution :
Jozef Stefan Inst., Ljubljana, Yugoslavia
fYear :
1991
Firstpage :
590
Abstract :
Multiamplitude continuous phase modulation (MACPM) is a bandwidth efficient modulation technique that can be represented as a sum of two constant amplitude continuous phase modulation (CPM) components that have the same modulation index but different amplitudes. Considering only the case when the modulation index is rational, the number of possible encoder states defined by the current amplitude and phase becomes finite, and MACPM can be described as a trellis code. If such MACPM modulator is preceded by a convolutional encoder, a more powerful trellis code is obtained. The Euclidean distance spectrum of coded MACPM, needed for analytic error probability evaluation, is obtained using an efficient bidirectional trellis search (BIFAST)
Keywords :
encoding; error statistics; phase modulation; BIFAST algorithm; Euclidean distance spectrum; MACPM; bidirectional trellis search; coded multiamplitude CPM; error probability; trellis code; Bandwidth; Continuous phase modulation; Data communication; Delay; Error analysis; Gaussian channels; Modulation coding; Phase modulation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electrotechnical Conference, 1991. Proceedings., 6th Mediterranean
Conference_Location :
LJubljana
Print_ISBN :
0-87942-655-1
Type :
conf
DOI :
10.1109/MELCON.1991.161907
Filename :
161907
Link To Document :
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