Adaptive raised-cosine channel interpolation for pilot-aided OFDM systems
IEEE Transactions on Wireless Communications
Pilot-aided multicarrier channel estimation via MMSE linear phase-shifted polynomial interpolation
IEEE Transactions on Wireless Communications
Channel estimation for non-ideal OFDM systems
IEEE Transactions on Communications
Optimizing average performance of OFDM systems using limited-rate feedback
IEEE Transactions on Wireless Communications
Non-coherent cell identification detection methods and statistical analysis for OFDM systems
IEEE Transactions on Communications
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The authors present an analysis of the effect of timing offset on channel estimation for comb-type pilot-aided orthogonal frequency division multiplexing (OFDM) systems. Residual timing offset does not negatively affect the channel estimation of the pilot subcarrier, but does corrupt the channel information obtained via interpolation. This paper provides the mean square error (MSE) channel estimation performance when a linear interpolation technique is used in a comb-type pilot-aided OFDM system. Analysis shows that the performance degradation of the channel estimator due to imperfect frame synchronization is dependent on the frequency correlation of the channels and the amount of timing offset