Title :
Spectral shaping of digitised speech for mobile radio applications
Author_Institution :
Elektronska industrija Research & Development Institute, Beograd, Yugoslavia
Abstract :
The modified duobinary technique is chosen for spectral shaping of digitised speech in mobile radio applications. A binary transversal filter coupled with a simple lowpass filter is used for generation of modified duobinary signals. The optimum value of the l.p. filter cutoff frequency is found using measured bit error rate curves and measured baseband power spectra.
Keywords :
digital communication systems; digital filters; mobile radio systems; voice communication; baseband power spectra; binary transversal filter; bit error rate curves; digitised speech; duobinary technique; lowpass filter; mobile radio applications; spectral shaping;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800258
