Turkish Journal of Electrical Engineering and Computer Sciences
DOI
-
Abstract
The effect of intersymbol interference on distance spectra for trellis coded 8-PSK, 16-QAM and 32-AMPM modulation schemes is evaluated using the methods proposed by Schlegel. Distance spectra of 16-state 8-PSK scheme are computed for different intersymbol interference channels. It is seen that on channels with intersymbol interference the spectral lines are spread into a nearly continuous spectrum and the minimum Euclidean distance between codewords decreases severely. Hence, although the main contribution at large signal to noise ratios comes from the minimum Euclidean distance ( d_{free} ) , higher spectral components also become very important at moderate values of the signal to noise ratio.
Keywords
Trellis Coded Modulation, Distance Spectrum, Intersymbol Interference.
First Page
111
Last Page
123
Recommended Citation
HACIÖMEROĞLU, SABİRE and YÜCEL, MELEK D. (2000) "Distance Spectra for Trellis Coded Modulation Schemes on Channels with Intersymbol Interference," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 8: No. 2, Article 3. Available at: https://journals.tubitak.gov.tr/elektrik/vol8/iss2/3
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