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In this paper, a new joint symbol detection and channel tracking algorithm is proposed for the coded MIMO-OFDM systems over time-varying frequency-selective fading channels. The iterative detection/decoding and channel estimation are iteratively employed based on the Variational Bayes expectation-maximization (VBEM) algorithm to improve the system performance. A modified list sphere decoder (LSD)...
In this paper, a new joint symbol detection and channel estimation algorithm is proposed for MIMO-OFDM systems over frequency-selective fading channels using the variational Bayesian expectation-maximization (VBEM) algorithm. Since the VBEM algorithm can provide distribution-estimates of the parameters, the statistical information about the channel uncertainty is exploited to improve the evaluation...
In this paper, a new joint channel tracking and symbol detection algorithm is proposed for MIMO-OFDM systems over the time-varying frequency-selective fading channel. The iterative detection/decoding and channel estimation are combined to improve system performance. With the aid of the candidate list from list sphere decoder (LSD), the channel frequency response of each subcarrier is estimated by...
This paper investigates iterative channel estimation for multiple-input multiple-output (MIMO) systems with orthogonal frequency division multiplexing (OFDM) transmission technique. Using the candidate list obtained by the list sphere decoder (LSD), the soft information is calculated and fed back to the channel estimator which is based on the maximum a posteriori (MAP) version of the expectation-maximization...
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