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Blind subspace-based channel estimation (SS-CE) methods have been widely discussed in orthogonal frequency division multiplexing (OFDM) systems since the spectral efficiency can be improved by reducing the number of pilot or training symbols. However, the signal matrix, constructed from transmitted signals, applied in SS-CE must be full rank to make SS-CE method successfully estimate the channel impulse...
Subspace-based blind channel estimation for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems with repetition index has been proposed in the literature. However, the full-row-rank probability of the signal matrix using the MIMO-based repetition index method is extremely low, especially when low-order modulation or few received OFDM symbols are used. In...
This paper presents a high-throughput multiple-input multiple-output (MIMO) signal detector based on the sort-free concept and the proposed mean-aided early-pruned scheme. The derived MIMO detector can reduce the number of node computation while maintaining the bit error rate (BER) performance of the conventional sort-free MIMO detection algorithm. Experimental results show that the proposed detector...
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