Synchronization method based on a new constant envelop preamble for OFDM systems

• Published in: IEEE transactions on broadcasting Vol. 51; no. 1; pp. 139 - 143
• Main Authors: Ren, G., Chang, Y., Zhang, H.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.03.2005; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Accuracy; Applied sciences; Constant envelop preamble; Estimators; Exact sciences and technology; Expansion; Frequency division multiplexing; Frequency estimation; Frequency synchronization; Information, signal and communications theory; Intersymbol interference; Multiplexing; Nonlinear distortion; OFDM; Offsets; Orthogonal Frequency Division Multiplexing; Peak to average power ratio; Signal and communications theory; Simulation; Synchronism; Synchronization; Telecommunications and information theory; Time measurements; Timing; Wireless communication; Performance evaluation; Parameter estimation; Accuracy; Simulation; OFDM; Signal estimation; Orthogonal frequency division multiplexing; Constant envelop preamble; Frequency estimation; Frequency offset; Timing; Synchronization
• ISSN: 0018-9316; 1557-9611
• DOI: 10.1109/TBC.2004.842520

The synchronization method using the available constant envelop preamble is analyzed, and a new preamble weighted by pseudo-noise sequence is proposed, with which a novel timing and frequency offset estimation method is presented for orthogonal frequency division multiplexing (OFDM) systems in this paper. By the proposed method, the accuracy of the timing offset estimator is significantly improved, and the estimate range of the frequency offset estimator is greatly enlarged with no loss in accuracy. The performance of the proposed method is demonstrated by simulations.