Maximum Likelihood Synchronization Algorithm for OFDM Systems
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In this article, we discuss the application of maximum likelihood algorithm for OFDM synchronization and provide a practical MATLAB program implementation. OFDM synchronization is a critical step ensuring receivers can properly decode OFDM signals. We thoroughly explain the concept and implementation of OFDM synchronization, demonstrating how the maximum likelihood algorithm plays a key role in this process. The MATLAB code includes essential functions for signal correlation calculation, peak detection using threshold-based methods, and timing offset estimation through likelihood maximization. Our implementation features cyclic prefix-based correlation for coarse synchronization and fine-tuning using pilot symbols, with detailed comments explaining each computational step. The complete MATLAB code helps readers understand both the implementation workflow and algorithmic details, including performance evaluation metrics for synchronization accuracy.
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