Frequency Synchronization and Data Detection in MIMO and OFDM Systems
Date Issued
2010
Date
2010
Author(s)
Liang, Yao-Jen
Abstract
This research studies the multi-path interference and time varying channel effect due to very high mobility terminals and provides possible solutions. The critical issues in very high mobility wireless communications are inter-symbol interference (ISI) due to multi-path fading and inter-carrier interference (ICI) due to oscillator mismatch and high Doppler shift. Two transmission techniques (orthogonal frequency division multiplexing, OFDM and multiple-input multiple-output, MIMO) are considered in this thesis. In addition to discussing the above mentioned techniques individually, we also study the multi-user MIMO preprocessing for broadcasting channels (BCs) and the MIMO-OFDM technique, which attracts much attention in both academic and industry.
Through surveying literatures, we use statistical and signal processing techniques to derive our algorithms and demonstrate our superiorities by computer simulations.
Subjects
OFDM
MIMO
frequency offest
channel estimation
Type
thesis
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