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Wireless Personal Communications
Erschienen in: Wireless Personal Communications 4/2014

01.08.2014

A Robust Joint Frequency Offset Estimation for the OFDM System Using Cyclic Delay Diversity

verfasst von: Won-Jae Shin, Seongjoo Lee, Young-Hwan You

Erschienen in: Wireless Personal Communications | Ausgabe 4/2014

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Abstract

Cyclic delay diversity (CDD) is a low-complexity transmit diversity technique for orthogonal frequency division multiplexing (OFDM), which transforms a multiple-input channel into an equivalent single-input channel with a large delay spread. Consequently, high frequency selectivity makes channel and frequency estimation a challenging task. This paper proposes an improved joint estimation of carrier frequency offset and sampling frequency offset for the OFDM system using CDD technique. By finding the amount of a transmit-antenna specific delay which reduces the variance of the frequency estimation scheme, these parameters improve the robustness of the joint frequency estimation scheme against the frequency selectivity of the channel. Computer simulation shows that the joint frequency-offset estimation scheme with properly designed cyclic delay parameters performs robustly, with the performance better than the conventional scheme.
Vorheriger Artikel User Capacity Scaling Laws of Multi-user Fading Channels in the Presence of MMSE Channel Estimators
Nächster Artikel Road Oriented Traffic Information System for Vehicular Ad hoc Networks

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Metadaten
Titel
A Robust Joint Frequency Offset Estimation for the OFDM System Using Cyclic Delay Diversity
verfasst von
Won-Jae Shin
Seongjoo Lee
Young-Hwan You
Publikationsdatum
01.08.2014
Verlag
Springer US
Erschienen in
Wireless Personal Communications / Ausgabe 4/2014
Print ISSN: 0929-6212
Elektronische ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-014-1650-1

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