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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40597

Title: An Iterative Overlapped Maximum Likelihood Synchronization Method for OFDM System
Authors: Chi-Min Li
Wei-Tse Sun
Contributors: 國立臺灣海洋大學:通訊與導航工程學系
Keywords: Synchronization
Maximum Likelihood
OFDM
Date: 2013
Issue Date: 2017-01-25T08:18:45Z
Publisher: Computer Science & Communications
Abstract: Abstract: OFDM system divides a wideband transmission bandwidth into several overlapped narrowband subcarriers to avoid the serious frequency selective fading problem. However, if Timing Offset (TO) and Carrier Frequency Offset (CFO) exist between the Transmitter (Tx) and Receiver (Rx), OFDM system will suffer the Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) that degrade the system performance dramatically. In this paper, we propose an iterative maximum likelihood method for synchronization. We also adopt the overlap concept to reduce the plateau problem. Simulation results show that the proposed method can predict the time delay and frequency offset correctly even under the multipath fading scenarios.
Relation: 5(2B)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/40597
Appears in Collections:[通訊與導航工程學系] 演講及研討會

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