The Chase Family of Detection Algorithms for Multiple-Input Multiple-Output Channels
IEEE Transactions on Signal Processing
IEEE Wireless Communications
On maximum-likelihood detection and the search for the closest lattice point
IEEE Transactions on Information Theory
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In this letter, we propose a soft-decoding ML MIMO demodulation method that lowers the complexity of the existing ML method. The proposed method finds the nearest point without calculating the Euclidean distance by exploiting the regular structure of bit-to-symbol mapping. It enables significant reduction of the number of distance calculations which is a major complexity burden.