sub-Nyquist sampling

sub-Nyquist sampling

[¦səb ′nī‚kwist ‚sam·pliŋ]
(communications)
Any technique of sampling an analog signal at a rate lower than the Nyquist rate in such a way as to preserve signal content without aliasing distortion.
In particular, the sampling of television signals at a rate lower than the Nyquist rate and at an odd multiple of the frame rate, so that the aliasing components are placed into periodically spaced voids in the television spectrum where they can be removed by a comb filter at the receiver.
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References in periodicals archive ?
Sadle, "Cyclic Feature Detection With Sub-Nyquist Sampling for Wideband Spectrum Sensing," IEEE Journal of Selected Topics in Signal Processing, vol.
combined sampling with compression operations) as the efficient method to achieve real-time spectrum estimation at a sub-Nyquist sampling rate has attracted substantial research efforts, which is motivated by the fact that there are plenty of temporarily unemployed spectrum holes in the wideband scenario.
t] can be accurately reconstructed by using a sub-Nyquist sampling rate; that is, [f.
To achieve our overreaching goal we focus on three interconnected objectives -- developing the 1) theory 2) hardware and 3) applications of sub-Nyquist sampling.
Sadler, Cyclic feature detection with sub-Nyquist sampling for wideband spectrum sensing, IEEE Journal of Selected Topics in Signal Processing, vol.
An alternative Xampling method uses the Sum of Sincs filter, following by uniform sampling of the output with sub-Nyquist sampling rate as described in [11].
Eldar, "From theory to practice: Sub-Nyquist sampling of sparse wideband analog signals," IEEE Journal of Selected Topics in Signal Process, Vol.
Compressed sensing (CS) allows sensing of sparse signals at sub-Nyquist sampling rates, and their reliable signal recovery via computationally efficient algorithms [8-10].
Whereas the sampling rates of the PU signal should be at least the Nyquist rate for conventional spectrum sensing, the PU signal can be sampled at sub-Nyquist sampling rates with CSS.
Li, "Deception jamming method for ISAR based on sub-Nyquist sampling technology," ICSP'2010 Proceedings, 2023-2026, 2010.
It has been explored for a wide range of applications, such as: medical imaging [15-18], radar imaging [19-26], sub-Nyquist sampling systems [27, 28], channel coding [29, 30], single-pixel cameras [31], and etc.