Premium
Voiceband data speed discrimination
Author(s) -
Benvenuto N.
Publication year - 1992
Publication title -
international journal of digital and analog communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1047-9627
DOI - 10.1002/dac.4510050202
Subject(s) - discriminator , bit (key) , computer science , autocorrelation , signal (programming language) , ideal (ethics) , moment (physics) , envelope (radar) , artificial intelligence , mathematics , statistics , telecommunications , detector , physics , radar , philosophy , computer security , epistemology , classical mechanics , programming language
Some results of research to discriminate voiceband data signals of different speeds are reported. A discrimination technique based upon the autocorrelation envelope and second order moment of the complex lowpass data signal is introduced. Under ideal channel conditions, the discriminator, within a window of 128 ms of PCM data samples, classifies whether the signal is at 9600 bit/s, 4800 bit/s, 2400 bit/s, 1200 bit/s or 300 bit/s. Performance of the discriminator for signals in the presence of various analog impairments shows that this method is quite robust.