Articles with "phase quadrature" as a keyword



High-Dimensional OFDM With In-Phase/Quadrature Index Modulation

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Published in 2021 at "IEEE Access"

DOI: 10.1109/access.2021.3066852

Abstract: In this paper, we propose a new modulation scheme for wireless communications called high-dimensional orthogonal frequency division multiplexing with in-phase/quadrature index modulation (HD-OFDM-IQ-IM). In the proposed scheme, coordinate values of a symbol of the HD… read more here.

Keywords: modulation; phase quadrature; high dimensional; index ... See more keywords

PRT Shaping Method for Heart Rate Variability Monitoring Using Phase- and Quadrature Self-Injection-Locked (PQSIL) Radar

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Published in 2025 at "IEEE Transactions on Microwave Theory and Techniques"

DOI: 10.1109/tmtt.2024.3439522

Abstract: This article proposes a PRT shaping algorithm, which is used in conjunction with a 2.4-GHz phase- and quadrature self-injection-locked (PQSIL) radar for noncontact heart rate variability (HRV) monitoring. To validate the demodulated signal measured from… read more here.

Keywords: phase quadrature; prt shaping; radar; monitoring ... See more keywords

In-Phase and Quadrature Timing Mismatch Estimation and Compensation in Millimeter-Wave Communication Systems

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Published in 2017 at "IEEE Transactions on Wireless Communications"

DOI: 10.1109/twc.2017.2696947

Abstract: The emerging millimeter-wave (mm-wave) MIMO systems are subject to strong radio frequency (RF) distortions and their compensation is crucial to realize such systems. In the existing literature, several estimation and compensation schemes have been proposed… read more here.

Keywords: estimation; iqtm; millimeter wave; phase quadrature ... See more keywords

Synchronous in-phase and quadrature demodulation technique for resonant micro-optic gyroscope.

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Published in 2019 at "Applied optics"

DOI: 10.1364/ao.58.005050

Abstract: The phase modulation and demodulation technique is widely used in resonant optical gyroscopes to accurately detect resonance frequencies, which directly affect gyro sensitivity. In order to overcome the influences of the system phase fluctuations, an… read more here.

Keywords: phase quadrature; demodulation; demodulation technique; quadrature demodulation ... See more keywords

Low-complexity and blind receiver in-phase/quadrature imbalances compensation and estimation in the frequency domain for high-order modulation formats.

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Published in 2022 at "Optics express"

DOI: 10.1364/oe.459394

Abstract: A frequency domain (FD) 4×2 multi-input and multi-output (MIMO) equalizer based on radially directed equalizer is proposed to compensate receiver in-phase/quadrature (IQ) imbalances of M-ary quadrature amplitude modulation signals. This algorithm has a significantly lower… read more here.

Keywords: equalizer; frequency domain; receiver phase; frequency ... See more keywords

Phase-quadrature quantum imaging with undetected photons.

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Published in 2022 at "Optics express"

DOI: 10.1364/oe.471837

Abstract: Sensing with undetected photons allows access to spectral regions with simultaneous detection of photons of another region and is based on nonlinear interferometry. To obtain the full information of a sample, the corresponding interferogram has… read more here.

Keywords: undetected photons; imaging undetected; optics; quadrature quantum ... See more keywords