On the Frequency Offset Effect on Zadoff-Chu Sequence Timing Performance

Conference: WTC 2014 - World Telecommunications Congress 2014
06/01/2014 - 06/03/2014 at Berlin, Germany

Proceedings: WTC 2014 - World Telecommunications Congress 2014

Pages: 5Language: englishTyp: PDF

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Authors:
Yang, Wenjie; Hua, Min; Zou, Jun; Hu, Jinsong; Zhang, JingJing; Wang, Mao (Wireless Networking and Mobile Communications Group, Nanjing University of Science and Technology, Nanjing, China)

Abstract:
Zadoff-Chu (ZC) sequences have been used as synchronization sequences in modern wireless communication systems, replacing the conventional pseudo-random noise (PN) sequences, due to their perfect autocorrelation properties. This paper shows how frequency offset can damage the autocorrelation of the ZC sequence, causing irreducible timing errors. An analytical framework is developed, which characterizes a ZC sequence’s timing behavior and its fundamental limitation as a synchronization sequence in the presence of frequency offset between the transmitter and the receiver.