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A new timing synchronization scheme for OFDM systems
서명 / 저자 A new timing synchronization scheme for OFDM systems / Nguyen Duc Long.
저자명 Nguyen Duc Long
발행사항 [대전 : 한국정보통신대학교, 2005].
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소장위치/청구기호

문지도서관2층 학위논문

ICU/MS05-53 2005

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초록정보

In this thesis we propose two algorithms for timing synchronization in orthogonal frequency division multiplexing (OFDM) systems. The proposed algorithms deal with low signal-to-noise ratio (SNR) and multipath fading channel with high delay spread, two factors that degrade the performance of a timing synchronizer. One algorithm is for frame synchronization, based on a well-known algorithm, Schmidt & Cox's [15]. By reallocating the power of transmitted signals and using a larger received window, proposed algorithm works well in low and moderate SNR with little degradation in bit error rate (BER) performance. The other algorithm derives from the observation that the synchronization in multipath fading channel can be improved when the channel is known. From that idea, we propose a symbol timing algorithm combining channel estimation and timing synchronization. One more block is added to the conventional timing synchronizer to correct the timing offset. The simulations with indoor fading channels show that the proposed algorithms outperform the previous ones.

서지기타정보

서지기타정보
청구기호 {ICU/MS05-53 2005
형태사항 iv, 59 p. : 삽도 ; 26 cm
언어 영어
일반주기 지도교수의 영문표기 : Hyun-Cheol Park
지도교수의 한글표기 : 박현철
학위논문 학위논문(석사) - 한국정보통신대학교 : 공학부,
서지주기 References : p. 55-59
주제 Synchronization
channel estimation
MIMO
OFDM
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