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학술지 Replica Correlation-Based Synchronization with Low Complexity and Frequency Offset Immunity
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저자
장갑석, 방승찬, 김훈
발행일
201310
출처
ETRI Journal, v.35 no.5, pp.739-747
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.13.0112.0764
협약과제
13PI2900, IEEE802.15.8의 완전분산형 대상인식 무선통신기술 표준개발, 곽병재
초록
This paper investigates the multifarious nature of the long-term evolution (LTE) scheme and that of the modified LTE scheme for symbol timing synchronization (STS). This investigation allows us to propose a new replica correlation-based STS scheme to overcome the inherent weaknesses of the other two schemes. The proposed STS signal combines a gold sequence and a half sine wave in the time domain, whereas conventional STS signals specify either binary sequences or complex sequences in the time domain or in the frequency domain. In the proposed scheme, a sufficient correlation property is realized by the gold sequence, and robustness against the frequency offset (FO) is achieved through the sine wave. Compared to the existing LTE-related schemes, the proposed scheme can better achieve immunity to FO and reduction in detector complexity, as well as a low peak-toaverage power ratio and a low detection error rate. Performance evaluations through analysis and simulation are provided in the paper to demonstrate these attributes. © 2013 ETRI.
키워드
Complexity, Frequency offset, OFDM, PAPR, Symbol timing synchronization
KSP 제안 키워드
Analysis and simulation, Binary sequence, Correlation property, Correlation-based, Gold Sequence, Long term Evolution(LTE), Peak-to-Average-Power-Ratio(PAPR), Performance evaluation, Sine wave, Symbol timing synchronization, detection error