Zobrazeno 1 - 10
of 3 255
pro vyhledávání: '"Coherent Detection"'
Publikováno v:
Guangtongxin yanjiu, Pp 23008101-23008109 (2024)
【Objective】Coherent optical communication is a high-speed, high-quality, and highly secure communication method, and coherent detection plays an extremely important role in coherent optical communication. High sensitivity coherent detection syste
Externí odkaz:
https://doaj.org/article/37dd50f32ebf4140ae908cf222295ab3
Publikováno v:
IEEE Access, Vol 12, Pp 175525-175534 (2024)
To meet the increasing demand for higher data rates and energy-efficient optical communication networks, this study investigates the unique characteristics of directly modulated (DM) vertical-cavity surface-emitting laser (VCSEL)-based bandwidth/bitr
Externí odkaz:
https://doaj.org/article/c871d06d0c9c42c0a9058a537b6a1199
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 2, Pp 1-7 (2024)
A length of polarization-correlation (LPC) based on speckle pattern of the non-uniform spatial polarization distribution is proposed and measured by using the classical measurement method of the Stokes polarization parameters for optical coherent det
Externí odkaz:
https://doaj.org/article/e4c3288bae2242859210544df46411d3
Akademický článek
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Autor:
Zhi Sun, Xingtao Jiang, Haonan Zhang, Jiangyun Deng, Zihao Xiao, Chen Cheng, Xiaolong Li, Guolong Cui
Publikováno v:
Remote Sensing, Vol 16, Iss 8, p 1379 (2024)
An airborne bistatic radar working in downward-looking mode confronts two major challenges for low-altitude target detection. One is range cell migration (RCM) and Doppler migration (DM) resulting from the relative motion of the radar and target. The
Externí odkaz:
https://doaj.org/article/98ef883423bb49e8892a193d11b40a2a
Publikováno v:
Sensors, Vol 24, Iss 8, p 2603 (2024)
Long-term coherent integration (CI) can effectively improve the radar detection capability for high-speed targets. However, the range walk (RW) effect caused by high-speed motion significantly degrades the detection performance. To improve detection
Externí odkaz:
https://doaj.org/article/655e75a9c8bc421f8900e1ac5ef0713d
Publikováno v:
Guangtongxin yanjiu, Pp 1-4,15 (2023)
To simplify the structure of real-time coherent Free-Space Optical (FSO) / wireless systems and reduce costs, this paper implements a low-cost FSO system based on bandpass Delta-Sigma Modulation (DSM) technology. A 256-ary Quadrature Amplitude Modula
Externí odkaz:
https://doaj.org/article/6db8670924b94b18af616725764b7dce
Publikováno v:
IEEE Access, Vol 11, Pp 18343-18355 (2023)
Among various multi-wave imaging methods, the photoacoustic imaging (PAI) has attracted more attention because it can achieve higher resolution and contrast through combining advantages of light excitation and ultrasound detection. However, due to lo
Externí odkaz:
https://doaj.org/article/c3f8eb4924824b63a5f8d04e5201f52a
Autor:
Dennis W. Prather, Stefano Galli, Garrett J. Schneider, Shouyuan Shi, Janusz A. Murakowski, Xiao-Feng Qi, Christopher Schuetz
Publikováno v:
IEEE Access, Vol 11, Pp 18082-18106 (2023)
Current trends in wireless communications require a Base Transceiver Station (BTS) to support an ever-increasing number of antennas, wider bandwidths, multiple frequency bands, and many simultaneous beams. This is a tall order when considering all-el
Externí odkaz:
https://doaj.org/article/e4eddc3677c54101bf28e59c074fe3b1
Autor:
Yi Xiang, Laurence B. Milstein
Publikováno v:
IEEE Access, Vol 11, Pp 13469-13481 (2023)
We are interested in a communication system that operates in the presence of an intelligent jammer, under stringent power constraints, but with flexible bandwidth constraints. We optimize some of the key elements in the transceiver design for low pow
Externí odkaz:
https://doaj.org/article/5dd54da8e9b64e618009a0897eb01f89