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This paper presents a blind channel estimation algorithm for multicarrier systems. The proposed scheme is based on fourth order statistics estimation of received data followed by a Gauss linearization of a non-linear system. The channel estimation is performed over a very short number of symbols in order to stay compliant with the channel coherence time. The proposed approach is well suited to CP-OFDM...
This paper presents a blind channel estimation algorithm based on the minimization of a new criterion. The algorithm is typically devoted to the case of an OFDMA context with K-ary QAM modulation and a weak number of received symbols, potentially inferior to the constellation size. In the simple 4-QAM case we analytically show that this algorithm is equivalent to the classical Viterbi-Viterbi algorithm...
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