Convergence of iterative decoding without channel estimation

TitleConvergence of iterative decoding without channel estimation
Publication TypeConference Paper
Year of Publication2004
AuthorsLampe, L., and R. Schober
Conference NamePersonal, Indoor and Mobile Radio Communications, 2004. PIMRC 2004. 15th IEEE International Symposium on
Pagination774 - 779 Vol.2
Date Publishedsep.
Keywordsautomatic repeat request, chart analysis, computational complexity, convergence, convergence analysis, decision-feedback differential demodulation, demodulation, fading channel, fading channels, hard-decision decoding, Iterative Decoding, noncoherent detection

Iterative decision-feedback (DFB) differential demodulation (DFDM) has recently been introduced for low-complexity noncoherent detection. The convergence analysis of this iterative decoding scheme is complicated since hard-decision decoding is involved. We develop an equivalent iterative decoder model which lends itself to a convergence study and as such constitutes a powerful tool for system design and analysis. Furthermore, we propose a modification of iterative DFDM which significantly improves convergence and hence power efficiency.


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