Synchronization schemes for packet OFDM system
- 30 March 2004
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 5, 3346-3350
- https://doi.org/10.1109/icc.2003.1204075
Abstract
A complete OFDM synchronization chain is proposed based on practical synchronization schemes. The synchronization is accomplished in three steps: frame detection (or timing), frequency offset estimation, and phase tracking. For frame detection, time-domain differential PN sequence is used. For frequency offset estimation, time-domain correlation of adjacent pilot symbols estimates the fractional part of the frequency offset and frequency-domain differential PN sequence is used to find the integer part. The phase offset due to frequency offset estimation error as well as the phase noise is tracked using a digital phase lock loop.Keywords
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