Home // International Journal On Advances in Telecommunications, volume 7, numbers 1 and 2, 2014 // View article

A Novel Timing Synchronization Method for MIMO-OFDM Systems

Authors:
Ali Rachini
Fabienne Nouvel
Ali Beydoun
Bilal Beydoun

Keywords: MIMO-OFDM system, timing synchronization, CAZAC sequences, compact preamble

Abstract:
To increase the throughput of transmission systems, MIMO-OFDM technology enables better transmission rate and improves the reception. The synchronization between the transmitter and the receiver has become a big challenge. A bad timing synchronization causes the loss of a lot of information in a MIMO-OFDM system. In this paper, a novel timing synchronization method is proposed for a MIMO-OFDM systems with N t transmit antennas and N r receive antennas. The proposed method is based on transmit an orthogonal CAZAC sequences over different transmit antennas [1]. Simulations results show that the proposed solution presents a good performance at a low SNR (Signal to Noise Ratio) in AWGN and multipath fading Rayleigh channels, where Doppler Effect is not considered for current simulations. Furthermore, this method can be implemented for MIMO-OFDM system up to 8 × 8 as well. In the proposed method, the coarse and fine timing synchronization are done at the same time at each receive antenna due to the different training sequences transmitted over different transmit antennas.

Pages: 22 to 33

Copyright: Copyright (c) to authors, 2014. Used with permission.

Publication date: June 30, 2014

Published in: journal

ISSN: 1942-2601