SIGNAL RECOVERY AND DETECTION OF CERTAIN WIDEBAND SIGNALS USING MULTIPLE LOW-RATE ADCS
Johnson, Michael A.
Jenn, David C.
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There are certain wideband signals that occupy quite large bandwidths but may have dominant amplitudes in certain frequency bands. In this work, we show that these signals can be effectively sampled by a lower sampling rate compared to what is required by the Nyquist-Shannon sampling theorem. These resonant frequency components are split into separate receiver paths (subchains or channels) and sampled at a much lower sampling rate than is required for the entire wideband signal. It is shown that reconstruction of the signal is improved, and the probability of detection performance experiences little or no degradation since the effective noise power is attenuated by the proposed method.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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