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- W2950291954 abstract "Training over sparse multipath channels is explored. The energy allocation and the optimal shape of training signals that enable error free communications over unknown channels are characterized as a function of the channels' statistics. The performance of training is evaluated by the reduction of the mean square error of the channel estimate and by the decrease in the uncertainty of the channel. A connection between the entropy of the wideband channel and the required energy for training is shown. In addition, there is a linkage between the sparsity and the entropy of the channel to the number of required channel measurements when the training is based on compressed sensing. The ability to learn the channel from few measurements is connected to the low entropy of sparse channels that enables training in the low SNR regime." @default.
- W2950291954 created "2019-06-27" @default.
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- W2950291954 date "2010-01-25" @default.
- W2950291954 modified "2023-09-27" @default.
- W2950291954 title "Training Over Sparse Multipath Channels in the Low SNR Regime" @default.
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