Title :
On the difficulty of bit-interleaved coded modulation for differentially encoded transmission over fading channels
Author :
Lampe, L.H.-J. ; Calabrò, S. ; Fischer, R.F.H. ; Müller-Weinfurtner, S.H. ; Huber, J.B.
Author_Institution :
Lab. fur Nachrichtentech., Erlangen-Nurnberg Univ., Germany
Abstract :
The application of bit-interleaved coded modulation (BICM) in combination with differential encoding and non-coherent reception over flat fading channels is assessed. Since the labeling plays a central role for BICM we propose a suitable definition of Gray labeling for differentially encoded transmission. We show that for multiple symbol detection such a Gray labeling does not exist. Finally, we illustrate the consequences on the capacity by comparing BICM and an optimum coded modulation scheme
Keywords :
Rician channels; channel coding; modulation coding; reception; time-varying channels; BICM; Gray labeling; bit-interleaved coded modulation; capacity; differential encoding; differentially encoded transmission; flat fading channels; multiple symbol detection; noncoherent reception; optimum coded modulation scheme; Channel state information; Differential quadrature phase shift keying; Euclidean distance; Fading; Interleaved codes; Labeling; Modulation coding; Nearest neighbor searches; Rician channels; World Wide Web;
Conference_Titel :
Information Theory and Communications Workshop, 1999. Proceedings of the 1999 IEEE
Conference_Location :
Kruger National Park
Print_ISBN :
0-7803-5268-8
DOI :
10.1109/ITCOM.1999.781442
