NDLI: Synchronisation algorithm for OFDM/OQAM systems based on zero autocorrelation code

Content Provider	IET Digital Library
Author	Qian, Xuewen Deng, Yansha Deng, Honggui Zhang, Chaoyang Du, Jie
Abstract	In this study, the authors first propose a sequence with the impulse-like autocorrelation property named zero autocorrelation code (ZAC) for orthogonal frequency division multiplexing (OFDM) based on offset quadrature amplitude modulation (OQAM) systems. The ZAC sequence can be generated by many prototype filters such as physical layer for dynamic spectrum access and cognitive radio and isotropic orthogonal transform algorithm filters. Thus, it has a wide application range. The authors then propose a synchronisation algorithm based on the ZAC. The proposed algorithm only needs two symbols to compose the preamble while existing algorithms need at least four symbols. They further assess the synchronisation performances via computer simulation. The simulation results show that the proposed algorithm can achieve better performance in terms of root mean square error of the timing and frequency offset estimation, with a 10 dB improvement on timing offset estimation performance over Saeedi-Sourck's algorithm when signal-to-noise ratio is 0 dB.
Starting Page	283
Ending Page	289
Page Count	7
ISSN	17518628
Volume Number	12
e-ISSN	17518636
Issue Number	Issue 3, Feb (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/12/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2017.0231
Journal	IET Communications
Publisher Date	2017-11-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Code Cognitive Radio Computer Simulation Correlation Method Dynamic Spectrum Access Filtering Method in Signal Processing Filtering Theory Frequency Offset Estimation Impulse-like Autocorrelation Property Isotropic Orthogonal Transform Algorithm Filter OFDM Modulation OFDM-OQAM System Offset Quadrature Amplitude Modulation System Orthogonal Frequency Division Multiplexing System Physical Layer Prototype Filter Quadrature Amplitude Modulation Radio Link And Equipment Radio Spectrum Management Root Mean Square Error Saeedi-Sourck Algorithm Sequence Signal to Noise Ratio Synchronisation Synchronisation Algorithm Synchronisation Performances Timing Offset Estimation ZAC Sequence Zero Autocorrelation Code
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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