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Shaped Four-Dimensional Modulation Formats for Optical Fiber Communication Systems [article]

Bin Chen, Gabriele Liga, Yi Lei, Wei Ling, Zhengyan Huan, Xuwei Xue, Alex Alvarado
2021 arXiv   pre-print
We review the design of multidimensional modulations by maximizing generalized mutual information and compare the maximum transmission reach of recently introduced 4D formats.  ...  A model-based optimization for nonlinear-tolerant 4D modulations is also discussed.  ...  ., “Increased reach of long-haul transmission using a constant-power 4D format designed using neural networks,” in ECOC, (2020). 8. G.  ... 
arXiv:2112.12377v1 fatcat:mhfefs2phvh7ziz4q4gwsi5m6a

Fast and accurate waveform modeling of long-haul multi-channel optical fiber transmission using a hybrid model-data driven scheme [article]

Hang Yang, Zekun Niu, Haochen Zhao, Shilin Xiao, Weisheng Hu, Lilin Yi
2022 arXiv   pre-print
The total running time of FDD waveform modeling scheme for 41-channel 1040-km fiber transmission is only 3 minutes versus more than 2 hours using SSFM for each input condition, which achieves a 98% reduction  ...  The modeling of optical wave propagation in optical fiber is a task of fast and accurate solving the nonlinear Schr\"odinger equation (NLSE), and can enable the optical system design, digital signal processing  ...  The long-haul fiber transmission time increased linearly with increasing distance for both SSFM and NN because of the iterative transmissions in both cases.  ... 
arXiv:2201.05502v2 fatcat:5sgvtl6usnccraq5nhinknsjiu

A Review of Self-Coherent Optical Transceivers: Fundamental Issues, Recent Advances, and Research Directions

Isiaka Alimi, Romil Patel, Nuno Silva, Chuanbowen Sun, Honglin Ji, William Shieh, Armando Pinto, Nelson Muga
2021 Applied Sciences  
This paper reviews recent progress on different high-speed optical short- and medium-reach transmission systems.  ...  Moreover, based on the growing increase in the dynamic environment and the heterogeneous nature of different applications and services to be supported by the systems, we discuss the reconfigurable and  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/app11167554 fatcat:fbijur7yjzgopi5i2r4ywzwxde

Mutual Information as a Figure of Merit for Optical Fiber Systems [article]

Tobias Fehenberger, Norbert Hanik
2015 arXiv   pre-print
In this paper, we analyze an optical fiber system by evaluating MI as the maximum achievable rate of transmission of such a system.  ...  We thereby justify to use the MI estimation method to accurately estimate the MI of an optical fiber system.  ...  Fig. 1 also provides a hint that a higher modulation than QPSK should be used for the considered long-haul link. Assume that the optical system operates at the optimal launch power of −1 dBm.  ... 
arXiv:1405.2029v2 fatcat:6fhk2j535bc2rgg4poblxlyxwm

Machine Learning Techniques to Mitigate Nonlinear Phase Noise in Moderate Baud Rate Optical Communication Systems [chapter]

Eduardo Avendaño Fernández, Ana María Cárdenas Soto, Neil Guerrero Gonzalez, Giovanni Serafino, Paolo Ghelfi, Antonella Bogoni
2019 Intelligent System and Computing [Working Title]  
The effect of NLPN in the constellation diagram consists of a shape distortion of symbols that increases the symbol error rate due to symbol overlapping when using a conventional demodulation grid.  ...  Nonlinear phase noise (NLPN) is the most common impairment that degrades the performance of radio-over-fiber networks.  ...  A special thanks to the Universidad Pedagógica y Tecnológica de Colombia (UPTC) for their financial support to encourage my doctoral studies by agreement 041.  ... 
doi:10.5772/intechopen.88871 fatcat:rpvsp6wixndo3b2phdasfpyaie

CubeSat Communications: Recent Advances and Future Challenges [article]

Nasir Saeed, Ahmed Elzanaty, Heba Almorad, Hayssam Dahrouj, Tareq Y. Al-Naffouri, Mohamed-Slim Alouini
2020 arXiv   pre-print
Finally, we identify several future research directions for CubeSat communications, including Internet of space things, low-power long-range networks, and machine learning for CubeSat resource allocation  ...  CubeSats further provide a complementary connectivity solution to the pervasive Internet of Things (IoT) networks, leading to a globally connected cyber-physical system.  ...  Using a transmit power of 4 Watts and digital pulseinterval modulation, a data rate of 2 Mbps was achieved with BER = 10 −6 for a transmission range of 500 meters.  ... 
arXiv:1908.09501v2 fatcat:yc22n5bwsjbdjpgdcpfoyuhv4u

Heterogeneously Integrated ITO Plasmonic Mach-Zehnder Interferometric Modulator on SOI [article]

Rubab Amin, Rishi Maiti, Yaliang Gui, Can Suer, Mario Miscuglio, Elham Heidari, Jacob B. Khurgin, Ray T. Chen, Hamed Dalir, Volker J Sorger
2020 arXiv   pre-print
Following this design paradigm, here, we demonstrate a spectrally broadband, GHz-fast Mach-Zehnder interferometric modulator, exhibiting a high efficiency signified by a miniscule VpL of 95 Vum, deploying  ...  photonic neural networks or applications in GHz-fast optical phased-arrays, for example.  ...  To test the temporal response of these sub-l-compact ITO MZI modulators, the frequency response (S21) is obtained by generating a low power modulating signal (0 dBm) with a 50 GHz network analyzer; a bias-tee  ... 
arXiv:2007.15457v2 fatcat:osbj53rsqvcstjqigswhl7yz74

Proceedings of The International Research Education & Training Center [article]

Namig Isazade
2021 Zenodo  
Proceedings of The International Research Education & Training Center  ...  with a long extent, increases.  ...  This paper aims to increase the accuracy of the measurements made with the halleffect sensor using the artificial neural network algorithm.  ... 
doi:10.5281/zenodo.5502124 fatcat:j5vvdb3j5nemvpo4splz4n7ziq

Defense Advanced Research Projects Agency (Darpa) Fiscal Year 2019 Budget Estimates

Department Of Defense Comptroller's Office
2018 Zenodo  
To enable in-theater, continuousanalysis and treatment of warfighters, this project seeks to explore diagnostic andtherapeutic approaches, including the use of bacterial predators as therapeuticsagainst  ...  Theprogram uses information, computational modeling, and physical sciences todiscover properties of biological systems that cross multiple scales of biologicalarchitecture and function, from the molecular  ...  Demonstrate a proof of concept flight demo using commercial components.FY 2019 Plans:-Design a custom high-power, high-efficiency, receiver architecture for mission-required beam transmission.  ... 
doi:10.5281/zenodo.1215599 fatcat:kxduvg6a5nflhf6iilkwnolobu

Toxicity Analysis and Cry Gene Profiling of Bacillus Thuringiensis Isolated from Western Ghats of Tamil Nadu State, India

A. Ramalakshmi, P. Annakodi, V. Udayasurian, V. Balasubramani
2018 Proceedings of the Indian National Science Academy  
Computing as a discipline is a recent one even though the practice of using mechanical aids for calculation can have various dates based on the perspective of the reader like Blaise Pascal in 1600s, George  ...  There are various evidences of calculation as an ancient activity [Tedre, 2014] that dates back to Babylonian days used for varieties of navigational, astronomical and other day-to-day needs.  ...  Thus, there is a constant but reducing supply of bitcoins from the network.  ... 
doi:10.16943/ptinsa/2018/49413 fatcat:2w6rohpbava5zh6m26tsiz7qky

第57回年会予稿集

2019 Seibutsu Butsuri  
4 次元透過型電子顕微鏡:理論とシミュレーション 4-Dimensional Transmission Electron Microscopy: Theory and Simulation Kuniaki Nagayama (N-EM Labos LLC) We will report on 4D electron microscopy of a transmission type (4D-TEM  ...  We have developed a pipeline for automatically identifying suitable holes using convolutional neural networks.  ...  These results indicate the increase of irregular cells such as cell clusters in blood after malignant tumor formation were one potential biomarkers of metastasis progress. 3Pos200 アミロイド凝集阻害物質の自動スクリーニングシステム  ... 
doi:10.2142/biophys.59.s1 fatcat:rsudhlmaanetrhmdxjgsiyorme

Fast and accurate waveform modeling of long-haul multi-channel optical fiber transmission using a hybrid model-data driven scheme [article]

Hang Yang, Zekun Niu, Haochen Zhao, Shilin Xiao, Weisheng Hu, Lilin Yi
2022
Traditional modeling of fiber channels using the split-step Fourier method (SSFM) has long been regarded as challenging in long-haul wavelength division multiplexing (WDM) optical fiber communication systems  ...  The modeling of optical wave propagation in optical fiber is a task of fast and accurate solving the nonlinear Schrödinger equation (NLSE), and can enable the research progress and system design of optical  ...  The long-haul fiber transmission time increased linearly with increasing distance for both SSFM and NN because of the iterative transmissions in both cases.  ... 
doi:10.48550/arxiv.2201.05502 fatcat:bd5ueblf3fhkfpxw5pb5br3sfm

A Rapid Prototyping Environment for Wireless Communication Embedded Systems

Bryan A. Jones, Joseph R. Cavallaro
2003 EURASIP Journal on Advances in Signal Processing  
., describes the design of a large-scale emulation engine and an application example from the field of low-power wireless devices.  ...  The paper proves that real-time emulation of a low-power TDMA receiver is feasible at a clock speed of 25 MHz.  ...  ACKNOWLEDGMENTS ACKNOWLEDGMENT We would like to thank Aptix Corporation (San Jose, Calif, USA) for the technical support during the prototype implementation of our methodology using the Aptix system  ... 
doi:10.1155/s111086570330304x fatcat:3ird7hyyzjeb5bmrqa6ztx7574

Modern Applied Science, Vol. 3, No. 3, March 2009, all in one file, Part B

Editor MAS
2009 Modern Applied Science  
When combined with other standard features such as species composition and merchantable timber volume, it is possible to analyze the effect a road network design has on delivered wood costs.  ...  This constraint represents a major impediment in use of specific areas, Vol. 3, No. 3 Modern Applied Science 84 which restrain the use of the area for road allocation.  ...  , for granting the auther Post-Doctoral fellow ship tenable at Biochemical Toxicology Unit of the Department of Chemistry, Federal University of Santa Maria, Brasil.  ... 
doi:10.5539/mas.v3n3p0b fatcat:p6ab3xx3lvhodfanzow5xp2lla

Obstacle Detection for Image-Guided Surface Water Navigation

Tanmana Sadhu, Alexandra Branzan Albu, Maia Hoeberechts, Eduard Wisernig, Brian Wyvill
2016 2016 13th Conference on Computer and Robot Vision (CRV)  
, a graphical interface that provides information using immersive AR graphics; and last, an indepth investigation and discussion of the problem and potential solutions from a design thinking perspective  ...  was to employ an autobiographical design method. iii Sailing is the process of controlling various aspects of boat operation in order to produce propulsion by harnessing wind energy using sails.  ...  ACKNOWLEDGEMENTS In a lifelong pursuit of learning, I am forever in debt to an increasingly large list of people including family, friends, colleagues and instructors.  ... 
doi:10.1109/crv.2016.34 dblp:conf/crv/SadhuAHWW16 fatcat:4m2m7lp22rfsxllvkjsibrh3va
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