Improvement and Analysis of Iterative Decision- Feedback Differential Demodulation

TitleImprovement and Analysis of Iterative Decision- Feedback Differential Demodulation
Publication TypeJournal Article
Year of Publication2005
AuthorsLampe, L., and R. Schober
JournalCommunications, IEEE Transactions on
Pagination1263 - 1268
Date Publishedaug.
KeywordsBER, bit-error rate, computational complexity, convergence analysis, convergence of numerical methods, demodulation, differential detection, error statistics, fading channels, flat fading channels, inner decoder, iterative decision-feedback differential demodulation, Iterative Decoding, low-complexity solution, power-efficient transmission, radio receivers, receiver

In this letter, we consider iterative decision-feedback differential demodulation (iterative DFDM), which was proposed previously as a low-complexity solution for power-efficient transmission over flat fading channels without channel state information at the receiver. We devise a modified demodulator (inner decoder), which improves both the achievable bit-error rate performance and the convergence of iterative DFDM without increasing complexity. We also establish an equivalent decoder model for iterative DFDM which enables a convergence analysis by means of extrinsic information transfer charts.


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