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ICC
2007
IEEE

ML CFO and PO Estimation in DCT OFDM Systems under Non-Circular Transmissions

9 years 4 months ago
ML CFO and PO Estimation in DCT OFDM Systems under Non-Circular Transmissions
Abstract— Frequency synchronization is one of the most important components in orthogonal frequency-division multiplexing (OFDM) systems. Recently, the discrete cosine transform (DCT) based OFDM system has received wide attentions due to several advantages. Hence, the study of frequency synchronization issue for this newly raised system is well on its time. To provide a thorough study, we consider the non-circular transmissions, and the results can be easily generated to circular transmissions if the elliptic variance is set to zero. We present three joint maximum likelihood (ML) carrier frequency offset (CFO) and phase offset (PO) estimators. From both the theoretical analysis and the numerical comparisons, we found new advantages of the DCT-OFDM over the traditional discrete Fourier transform (DFT) based OFDM. These advantages, as well as those already studied in the early works on DCT-OFDM, support the belief that the DCT-OFDM is a new promising multi-carrier modulation (MCM) sche...
Tao Cui, Feifei Gao, Arumugam Nallanathan, Chintha
Added 02 Jun 2010
Updated 02 Jun 2010
Type Conference
Year 2007
Where ICC
Authors Tao Cui, Feifei Gao, Arumugam Nallanathan, Chintha Tellambura
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