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Single-carrier systems with MMSE linear equalizers: Performance degradation due to channel and CFO estimation errors

Liavas Athanasios, Tsipouridou Despoina

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URIhttp://purl.tuc.gr/dl/dias/3AAD251A-46A0-460E-B240-755DC32B6FE6-
Αναγνωριστικόhttps://doi.org/10.1109/ICASSP.2011.5947111-
Γλώσσαen-
ΤίτλοςSingle-carrier systems with MMSE linear equalizers: Performance degradation due to channel and CFO estimation errorsen
ΔημιουργόςLiavas Athanasiosen
ΔημιουργόςΛιαβας Αθανασιοςel
ΔημιουργόςTsipouridou Despoinaen
ΔημιουργόςΤσιπουριδου Δεσποιναel
ΠερίληψηWe assess the impact of the channel and carrier frequency offset (CFO) estimation errors on the performance of single-carrier systems with MMSE linear equalizers. Performance degradation is caused by the fact that a mismatched MMSE linear equalizer is applied to channel output samples with imperfectly canceled CFO. We develop asymptotic expressions for the excess mean square error (EMSE) induced by the channel and CFO estimation errors. Under some realistic assumptions, we derive a simple EMSE approximation which reveals that performance degradation is mainly caused by the imperfectly canceled CFO. Furthermore, the EMSE is approximately proportional to the CFO estimation error variance, with the proportionality factor being independent of the training sequence. Thus, optimal training sequence (TS) design for CFO estimation is also highly relevant for joint channel and CFO estimation.en
ΤύποςΠλήρης Δημοσίευση σε Συνέδριοel
ΤύποςConference Full Paperen
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by-nc-nd/4.0/en
Ημερομηνία2015-11-17-
Ημερομηνία Δημοσίευσης2011-
Βιβλιογραφική ΑναφοράA.P. Liavas, D. Tsipouridou, "Single-carrier systems with MMSE linear equalizers: Performance degradation due to channel and CFO estimation errors," in 2011 Acoustics, Speech and Signal Processing , IEEE International Conference on(ICASSP), doi: 10.1109/ICASSP.2011.5947111en

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