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Code-Aided Channel Tracking for OFDM

Overview This contribution deals with the problem of tracking a frequency-selective channel for OFDM systems, where the data is protected by a powerful error-correcting code. This paper presents an EM-based receiver, operating on a single OFDM symbol at a time, that iterates between channel estimation and data detection. The channel estimator accepts information from the detector in the form of a posteriori probabilities. The estimator is robust in a sense that it makes very few assumptions regarding the underlying channel model. Complexity-reducing approximations are discussed. Performance results are provided in the form of Monte Carlo simulations.

Further White Paper Details
Publisher	Ghent University	File Format	PDF
Date Published	April 2007
Format	White Papers
Topics	Wireless LAN, Programming Languages, Mobile - Wireless Communications

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