Title :
Synchronization algorithms for MIMO OFDM systems
Author :
Zhou, En ; Zhang, Xing ; Zhao, Hui ; Wang, Wenbo
Author_Institution :
Center for Wireless Commun., Beijing Univ. of Posts & Telecommun., China
Abstract :
This paper proposes a time and frequency synchronization solution for MIMO OFDM systems. The synchronization is achieved using one preamble which is simultaneously transmitted from all transmit antennas in the same OFDM time instant. The synchronization is accomplished sequentially by coarse time synchronization, fractional frequency offset estimation, integral frequency offset estimation and fine time synchronization. Simulation results demonstrate that the proposed synchronization algorithms have a satisfactory performance even at a low SNR in a rich multipath environment. And the synchronization performance in a MIMO channel are superior to those in a SISO channel due to its larger diversity gain.
Keywords :
MIMO systems; OFDM modulation; diversity reception; frequency estimation; multipath channels; synchronisation; MIMO OFDM systems; coarse time synchronization; diversity gain; fine time synchronization; fractional frequency offset estimation; frequency synchronization; integral frequency offset estimation; low SNR; multipath environment; simultaneously transmitted preamble; Antennas and propagation; Channel estimation; Frequency estimation; Frequency synchronization; MIMO; OFDM; Receiving antennas; Transmitters; Transmitting antennas; Wireless communication;
Conference_Titel :
Wireless Communications and Networking Conference, 2005 IEEE
Print_ISBN :
0-7803-8966-2
DOI :
10.1109/WCNC.2005.1424469
