Timing synchronization in MIMO-OFDM systems

WCU Author/Contributor (non-WCU co-authors, if there are any, appear on document)
Farhan Farhan (Creator)
Western Carolina University (WCU )
Web Site: http://library.wcu.edu/
James Zhang

Abstract: OFDM (Orthogonal Frequency Division Multiplexing) provides a promising physical layer for 4G and 3GPP LTE Systems in terms of efficient use of bandwidth and high data rates. It is used in several applications likeWiFi (IEEE 802.11n),WiMax (IEEE 802.16), Digital Audio Broadcasting (DAB), Digital Video Broadcasting (DVB) and so on. OFDM suffers from inter-symbol interference and inter-carrier interference in wireless and fading environments and it is important to estimate and correct the start of OFDM symbol efficiently to reduce timing and frequency offset errors. Synchronization issues in OFDM are crucial and can lead to certain amount of information loss if they are not properly addressed. There are two modes of implementation forDigital Video Broadcasting-Terrestrial (DVB-T) and this thesis implements the 2K mode. It highlights the implementation of OFDM in DVB-T according to the European Telecommunications Standards Institute (ETSI) . It mainly focuses on the timing offset problem present in OFDM systems and its proposed solution using Cyclic Prefix (CP) as a modified Schmidl and Cox’s (SC) algorithm. Simulations were performed to compare the different synchronization methods with different amount of timing offsets and under different channel environments.

Additional Information

Language: English
Date: 2013
Orthogonal frequency division multiplexing -- Data processing -- Design
MIMO systems -- Design

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