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Coarse symbol synchronization algorithms for OFDM systems in multipath channels

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2 Author(s)
Donghoon Lee ; Div. of Electr. & Comput. Eng., Pohang Univ. of Sci. & Technol., South Korea ; Kyungwhoon Cheun

A maximum-likelihood (ML) coarse symbol synchronization algorithm for OFDM systems in multipath channels is derived. Several simplifying assumptions reduce the rather impractical ML algorithm to more practical forms of minimum mean-squared-error and maximum correlation algorithms. All of the derived algorithms exploit the cyclic prefix and thus do not require a known training sequence. Estimating the position of the first arriving path, the algorithms allow maximum utilization of the guard interval thus minimizing intersymbol interference.

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IEEE Communications Letters  (Volume:6 ,  Issue: 10 )