Transmission Performance Improvement in Microwave/Millimeter-Wave Optical System Using Chirped Fiber Grating

2005 ◽  
Vol 26 (7) ◽  
pp. 1005-1016 ◽  
Author(s):  
Shilie Zheng ◽  
Xianmin Zhang
Keyword(s):  
Performance Improvement ◽  
Millimeter Wave ◽  
Optical System ◽  
Fiber Grating ◽  
Transmission Performance ◽  
Chirped Fiber Grating

Wideband true-time-delay beam former that employs a tunable chirped fiber grating prism

2003 ◽  
Vol 42 (13) ◽  
pp. 2273 ◽  
Author(s):  
Yunqi Liu ◽  
Jianping Yao ◽  
Jianliang Yang
Keyword(s):  
Time Delay ◽  
Fiber Grating ◽  
True Time Delay ◽  
True Time ◽  
Chirped Fiber Grating

scholarly journals Deep Learning-Based Beamforming for Millimeter-Wave Systems Using Parametric ReLU Activation Function

2021 ◽  
Author(s):  
Alshimaa Hamdy ◽  
Tarek Abed Soliman ◽  
Mohamed Rihan ◽  
Moawad I. Dessouky
Keyword(s):  
Deep Learning ◽  
Performance Improvement ◽  
Millimeter Wave ◽  
Antenna Arrays ◽  
Activation Function ◽  
Model Accuracy ◽  
Learning Network ◽  
Parametric Rectified Linear Unit ◽  
Complexity Cost ◽  
Deep Learning Network

Abstract Beamforming design is a crucial stage in millimeter-wave systems with massive antenna arrays. We propose a deep learning network for the design of the precoder and combiner in hybrid architectures. The proposed network employs a parametric rectified linear unit (PReLU) activation function which improves model accuracy with almost no complexity cost compared to other functions. The proposed network accepts practical channel estimation input and can be trained to enhance spectral efficiency considering the hardware limitation of the hybrid design. Simulation shows that the proposed network achieves small performance improvement when compared to the same network with the ReLU activation function.

Optical Beamforming Networks Based on Broadband Optical Source and Chirped Fiber Grating

2008 ◽  
Vol 20 (9) ◽  
pp. 733-735 ◽  
Author(s):  
Bo Zhou ◽  
Xiaoping Zheng ◽  
Xianbin Yu ◽  
Hanyi Zhang ◽  
Yili Guo ◽  
...  
Keyword(s):  
Fiber Grating ◽  
Optical Source ◽  
Chirped Fiber Grating

A cantilever deflection optical fiber sensorbased on chirped fiber grating Fabry-Perotcavity

2021 ◽  
Author(s):  
Xie Zhanwu ◽  
Yan Haitao ◽  
Zhang hongtao ◽  
Zhao Xiaoyan ◽  
Daofu Han
Keyword(s):  
Optical Fiber ◽  
Fiber Grating ◽  
Cantilever Deflection ◽  
Chirped Fiber Grating
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