Results 1 to 10 of about 463,079 (230)

Joint Coherent/Non-Coherent Detection for Distributed Massive MIMO: Enabling Cooperation Under Mixed Channel State Information [PDF]

Sensors
Beyond-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, Peter Smith, Margreta Kuijper, Rajitha Senanayake   +3 more
doaj   +2 more sources

Coherent Detection of Ultra-weak Electromagnetic Fields

Physical Review D, 2018
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.
Barke, Simon, Bush, Zachary R., Hallal, Ayman, Hollis, Harold, Messineo, Giuseppe, Mueller, Guido, Spector, Aaron D., Tanner, D. B.   +7 more
core   +4 more sources

The Effect of Light Source Line Width on the Spectrum Resolution of Dual-Frequency Coherent Detection Signals. [PDF]

Sensors (Basel), 2019
Ren J, Sun H, Zhang L, Zhao Y.
europepmc   +3 more sources

Experimental Study on Partially Coherent Optical Coherent Detection

Photonics
When coherent detection occurs, the polarization mismatch between signal light and local oscillator light can reduce the efficiency of coherent detection.
Jingyuan Liang, Yi Mu, Xizheng Ke, Meimiao Han   +3 more
doaj   +2 more sources

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, Yueping Niu, Shangqing Gong   +2 more
doaj   +1 more source

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, Maurice O’Sullivan, Zhenping Xing, Md Samiul Alam, Mohammad E. Mousa-Pasandi, David V. Plant   +5 more
openaire   +2 more sources

Coherent Detection-Based Optical OFDM, 60 GHz Radio-over-Fiber Link Using Frequency Quadrupling, and Channel and Carrier Phase Estimation

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, Devendra Chack, Amitesh Kumar   +2 more
doaj   +1 more source

On the Communication Performance of Airborne Distributed Coherent Radar

Applied Sciences, 2022
Compared with a monostatic radar, airborne distributed coherent radar (ADCR) has been widely applied thanks to its flexibility, greater degree of freedom, stronger detection, and anti-jamming ability.
Qinhao Wu, Bo Zhang, Hongqiang Wang, Jinlin Peng   +3 more
doaj   +1 more source

Ambient OFDM Pilot-Aided Backscatter Communications: Concept and Design

IEEE Access, 2021
This paper investigates a backscatter communications system that exploits ambient pilot symbols used in existing standards based on orthogonal frequency-division multiplexing (OFDM), such as IEEE802.11, in order to realize ultra-low power communications ...
Takanori Hara, Ryuhei Takahashi, Koji Ishibashi   +2 more
doaj   +1 more source

Non-coherent detection for ultraviolet communications with inter-symbol interference [PDF]

, 2020
Ultraviolet communication (UVC) serves as a promising supplement to share the responsibility for the overloads in conventional wireless communication systems.
Hu, Wenxiu, Leeson, Mark S., Popov, Sergei, Wei, Zhuangkun, Xu, Tianhua, Zhang, Min   +5 more
core   +1 more source