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- W153903227 abstract "We observe that for the correlation receiver, time reversal (TR) pre-filter is an optimum pre-filter that maximizes the signal to noise ratio (SNR) for a given input power. However, using channel state information (CSI), the optimum SNR can be achieved by employing the matched filter (MF). Since the SNR of the MF depends on the transmitted pulse shape, we propose a new pre-filter which is a cascade of several TR filters to improve the SNR of the MF receiver. It is shown that with every additional TR pre-filter at the transmitter the SNR of the MF receiver increases. From the simulations it is observed that the first TR pre-filter focuses and subsequent TR pre-filters defocuses the received signal which results in higher inter symbol interference (ISI). Thus, depending on the data rate a suitable choice has to be made on the number of TR pre-filters to be used at the transmitter." @default.
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- W153903227 date "2009-01-01" @default.
- W153903227 modified "2023-09-27" @default.
- W153903227 title "Time Reversal Techniques for SNR Improvement" @default.
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