Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/15355
Title: Decoupled maximum likelihood carrier frequency offset estimator for MIMO-OFDM systems
Authors: LU MIAOMIAO
Keywords: OFDM, MIMO, CFO
Issue Date: 23-May-2006
Source: LU MIAOMIAO (2006-05-23). Decoupled maximum likelihood carrier frequency offset estimator for MIMO-OFDM systems. ScholarBank@NUS Repository.
Abstract: The objective of this thesis is to present a reliable method to estimate the carrier frequency offset in Single-Input-Single-Output Orthorgonal Frequency Division Multiplexing (SISO-OFDM) and Multi-Input-Multi-Output OFDM (MIMO-OFDM) systems. Carrier Frequency Offset (CFO) is the difference between the carrier frequency of the received signal and the frequency of the receiver oscillator. Both OFDM and MIMO-OFDM systems are very sensitive to CFO, which degrades the performance of the system. CFO must be estimated and compensated before the Fast Fourier Transform (FFT) based demodulation. In this thesis, we propose a decoupled maximum likelihood blind estimation (DEML) method which does not involve any pilot or training symbols. Unlike most traditional maximum likelihood methods, the proposed method does not rely on the structure of cyclic prefix either. Hence, it avoids the problem of excess cyclic prefix.
URI: http://scholarbank.nus.edu.sg/handle/10635/15355
Appears in Collections:Master's Theses (Open)

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