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• W2168396688 abstract "In this paper, a low-complexity iterative receiver combining joint iterative channel estimation with symbol detection is proposed for coded orthogonal frequency division multiplexing (OFDM) systems in fast fading channels with Doppler frequencies up to 15% of the OFDM symbol rate. The receiver exchanges information between the channel estimator and detector in an iterative fashion to obtain accurate estimates of the channel state information (CSI). The channel is modelled as a weighted sum of fixed basis expansion model (BEM) functions. The BEM channel coefficients are estimated with a Kalman filter. The initial channel estimate is performed from sparse pilot signals. Data is detected and decoded and the channel is estimated again based on the estimated transmitted data. The cycle of data detection, decoding, and channel estimation is repeated until convergence. It is shown that with a pilot to data ratio of 7/144 and with pilots consuming only 1/145 of transmission power, bit error rate performance within 0.1 dB of those achieved with perfect CSI is obtained." @default.
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• W2168396688 date "2010-04-01" @default.
• W2168396688 modified "2023-10-02" @default.
• W2168396688 title "Near Optimal Channel Estimation for OFDM in Fast Fading Channels" @default.
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• W2168396688 doi "https://doi.org/10.1109/wcnc.2010.5506624" @default.
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