DF-DD for channels with phase noise

TitleDF-DD for channels with phase noise
Publication TypeJournal Article
Year of Publication2003
AuthorsSchober, R., L. Lampe, Y. Ma, and S. Pasupathy
JournalCommunications, IEEE Transactions on
Pagination890 - 893
Date Publishedjun.
Keywordsautomatic repeat request, decision-feedback differential detection, differential detection, differential phase shift keying, error floor, expectation maximization, feedback, feedback filter, optimisation, phase noise, unknown frequency offsets

In this letter, we design decision-feedback differential detection (DF-DD) schemes for channels with phase noise. If the DF-DD feedback filter is properly optimized, a performance similar to that of a more complex scheme, recently reported by Chiavaccini and Vitetta, based on expectation maximization, can be achieved. However, it is also shown that an error floor is unavoidable for channels with phase noise. If a constraint is introduced, the DF-DD receiver can be made robust against unknown frequency offsets.


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