Results 1 to 10 of about 5,174,138 (292)
Asymmetric self-coherent detection
Optics Express, 2021 The bandwidth upgrade required in short-reach optical communications has prompted the need for detection schemes that combine field reconstruction with a cost-effective subsystem architecture. Here we propose an asymmetric self-coherent detection (ASCD) scheme for the field reconstruction of self-coherent (SC) complex double-sideband (DSB) signals ...
Xueyang Li +5 more
openaire +3 more sources
On-chip coherent detection with quantum limited sensitivity. [PDF]
Sci Rep, 2017 While single photon detectors provide superior intensity sensitivity, spectral resolution is usually lost after the detection event. Yet for applications in low signal infrared spectroscopy recovering information about the photon’s frequency ...
Kovalyuk V +12 more
europepmc +2 more sources
Joint Coherent/Non-Coherent Detection for Distributed Massive MIMO: Enabling Cooperation Under Mixed Channel State Information [PDF]
SensorsBeyond-5G wireless systems increasingly rely on distributed massive multiple-input multiple-output (MIMO) architectures to achieve high spectral efficiency, low latency, and wide coverage.
Supuni Gunasekara +3 more
doaj +2 more sources
Coherent detection of ultraweak electromagnetic fields [PDF]
Physical Review D, 2019 We explore the application of heterodyne interferometry for a weak-field coherent detection scheme. The methods detailed here will be used in ALPS II, an experiment designed to search for weakly-interacting, sub-eV particles. For ALPS II to reach its design sensitivity this detection system must be capable of accurately measuring fields with equivalent
Bush, Zachary R. +7 more
openaire +5 more sources
Experimental Study on Partially Coherent Optical Coherent Detection
PhotonicsWhen coherent detection occurs, the polarization mismatch between signal light and local oscillator light can reduce the efficiency of coherent detection.
Jingyuan Liang +3 more
doaj +2 more sources
Photonic super-resolution millimeter-wave joint radar-communication system using self-coherent detection. [PDF]
Optics Letters, 2022 A millimeter-wave (MMW) joint radar-communication (JRC) system with super-resolution is proposed and experimentally demonstrated, using optical heterodyne upconversion and self-coherent detection downconversion techniques.
Wenlin Bai +6 more
semanticscholar +1 more source
Performance Improvement of LoRa Modulation With Signal Combining and Semi-Coherent Detection [PDF]
IEEE Communications Letters, 2021 In this letter, we investigate performance improvements of low-power long-range (LoRa) modulation when a gateway is equipped with multiple antennas. We derive the optimal decision rules for both coherent and non-coherent detections when combining signals
The Khai Nguyen, Ha H. Nguyen, E. Bedeer
semanticscholar +1 more source
Use of optical coherent detection for environmental sensing
European Conference on Optical Communication, 2022 We discuss the use of the full transmission matrix extracted from a standard coherent receiver to improve the environmental sensing capabilities of optical fiber links.
A. Mecozzi +6 more
semanticscholar +1 more source
External Modulation Optical Coherent Domain Reflectometry with Long Measurement Range
Sensors, 2021 Optical coherent domain reflectometry (OCDR) can achieve a high spatial resolution that is independent of the bandwidth of the receiver, but the measurement range is usually very limited.
Yinghong Xue +2 more
doaj +1 more source
Frontiers in Physics, 2021 The optical orthogonal frequency division multiplexing (OFDM) is proven to be a most promising technology for the next-generation high-capacity and ultra-wide bandwidth 5G communication systems.
Sunil N Thool +2 more
doaj +1 more source