Preamble-Based Symbol Timing Algorithms in OFDM Systems
Open Access
- 7 June 2022
- journal article
- Published by Orclever Science and Research Group in The European Journal of Research and Development
- Vol. 2 (2), 445-458
- https://doi.org/10.56038/ejrnd.v2i2.91
Abstract
In orthogonal frequency division multiplexing (OFDM) systems, a preamble is added at the start of the OFDM data frame in order to find the correct frame starting point. In the receiver, the symbol starting point is estimated by a correlation-based timing metric that uses the periodic properties of the preamble. In this study, a novel preamble structure using the constant amplitude zero autocorrelation (CAZAC) sequence is proposed. The performance of the timing synchronization algorithms has been compared with the proposed method in terms of mean squared error (MSE). The simulations are performed under additive white Gaussian noise (AWGN) and Rayleigh multipath fading channels. The simulation results indicate that our proposed method provides better timing MSE performance for the low signal-to-noise ratio (SNR) values.Keywords
This publication has 19 references indexed in Scilit:
- Synchronization Sequence Design for FBMC/OQAM SystemsIEEE Transactions on Wireless Communications, 2016
- Sharing It My Way: Efficient M2M Access in LTE/LTE-A NetworksIEEE Transactions on Vehicular Technology, 2016
- Timing and Frequency Synchronization for OFDM Downlink Transmissions Using Zadoff-Chu SequencesIEEE Transactions on Wireless Communications, 2014
- Large Zero Autocorrelation Zones of Golay Sequences and Their ApplicationsIEEE Transactions on Communications, 2013
- Timing Estimation Based on Statistical Change of Symmetric Correlator for OFDM SystemsIEEE Communications Letters, 2013
- Synchronization Method Based on a New Constant Envelop Preamble for OFDM SystemsIEEE Transactions on Broadcasting, 2005
- A robust timing and frequency synchronization for OFDM systemsIEEE Transactions on Wireless Communications, 2003
- A novel timing estimation method for OFDM systemsIEEE Communications Letters, 2003
- ML estimation of time and frequency offset in OFDM systemsIEEE Transactions on Signal Processing, 1997
- Robust frequency and timing synchronization for OFDMIEEE Transactions on Communications, 1997