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A calculation-efficient algorithm for decision feedback equalizers

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3 Author(s)
De, P. ; Mitsubishi Electr. Inf. Technol. Center America Inc., New Providence, NJ, USA ; Jay Bao ; Poon, T.

We propose an algorithm for decision feedback equalizers used in high speed digital receiver demodulators such as DTV receivers. The algorithm uses the sparse channel characteristics of the DTV transmission. A variation of the decision feedback equalizer, namely the partial feedback equalizer, is also introduced. The sparseness of the channel is combined with the partial feedback equalizer to develop a new algorithm. Similarity with subspace based filtering is noted, which results in robust performance in the presence of noise. The new algorithm has a superior convergence speed and lower steady state mean squared error, as compared to conventional approaches

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Consumer Electronics, IEEE Transactions on  (Volume:45 ,  Issue: 3 )