Distance Spectra for Trellis Coded Modulation Schemes on Channels with Intersymbol Interference

Sabire Haciömeroğlu And Melek D. YÜCEL

Makale detayları

Distance Spectra for Trellis Coded Modulation Schemes on Channels with Intersymbol Interference

Yazarlar:

Sabire Haciömeroğlu And Melek D. YÜCEL

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2000 Vol.8 Issue 2, pp.111-123

Belge Tipi:

Makale

Yayın Tarihi:

1/2000

Belge Dili:

Türkçe

Document ID (Org No.):

2000744399

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

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 ( dfree ) , higher spectral components also become very important at moderate values of the signal to noise ratio.

 

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 ( dfree ) , higher spectral components also become very important at moderate values of the signal to noise ratio.

Makale detayları

Distance Spectra for Trellis Coded Modulation Schemes on Channels with Intersymbol Interference

Yazarlar: Sabire Haciömeroğlu And Melek D. YÜCEL

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2000 Vol.8 Issue 2, pp.111-123

Belge Tipi: Makale

Yayın Tarihi: 1/2000

Belge Dili: Türkçe

Document ID (Org No.): 2000744399

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Sabire Haciömeroğlu And Melek D. YÜCEL

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2000 Vol.8 Issue 2, pp.111-123

Belge Tipi:

Makale

Yayın Tarihi:

1/2000

Belge Dili:

Türkçe

Document ID (Org No.):

2000744399

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632