Title :
A Novel Timing Synchronization Method for MIMO OFDM Systems
Author :
Feng, Chong ; Zhang, Jianhua ; Zhang, Yanyan ; Xia, Minghua
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing
Abstract :
This paper presents a timing synchronization method with shift-orthogonal constant amplitude zero auto correlation (CAZAC) sequences for the multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. Utilizing the unique properties of CAZAC sequences, at the receivers, unit pulses can be obtained by the symmetrical correlation to detect time offsets and differentiate inter-transmitter delays (ITDs). The performance of the proposed method is compared with traditional methods at different values of ITDs. Simulations demonstrate that the proposed CAZAC sequence-based method provides high accuracy in detecting the different time offsets caused by the distributed transmitters of the MIMO OFDM systems.
Keywords :
MIMO communication; OFDM modulation; correlation methods; sequences; synchronisation; MIMO OFDM system; inter transmitter delay; multiple input multiple output system; orthogonal frequency division multiplexing; shift-orthogonal constant amplitude zero auto correlation sequence; timing synchronization method; Autocorrelation; Delay; Frequency synchronization; MIMO; OFDM; Technological innovation; Telecommunications; Timing; Transmitters; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-1644-8
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2008.197
