New preamble structures for synchronization and cell searching in OFDM systems

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This thesis proposes two new preamble structures for synchronization and cell searching in cellular based Orthogonal Frequency Division Multiplexing (OFDM) systems. The proposed preamble structures are to impose Pseudo Noise sequences (PN-sequences) on the OFDM transmitted signal in time-domain for time and frequency synchronization. This scheme make it possible to achieve a good performance at a low SNR, therefore, it can guarantee a reliable communication to a mobile located at the cell edge. Herein, the PN-sequences occupies the whole or part of the preamble according to the two different preamble structures. The proposed preamble structures are compared each other in terms of frame and frequency synchronization, cell searching and mean acquisition time. The simulation results elucidate that the proposed preamble structures are appropriate for cellular based OFDM systems.
Advisors
Han, Young-Namresearcher한영남researcher
Description
한국정보통신대학교 : 공학부,
Publisher
한국정보통신대학교
Issue Date
2005
Identifier
392555/225023 / 020034591
Language
eng
Description

학위논문(석사) - 한국정보통신대학교 : 공학부, 2005, [ vi, 44 p. ]

URI
http://hdl.handle.net/10203/55398
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=392555&flag=dissertation
Appears in Collection
School of Engineering-Theses_Master(공학부 석사논문)
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