Communications engineering最新文献

A multipath error cancellation method based on antenna jitter. 基于天线抖动的多径误差消除方法。

Communications engineering Pub Date : 2025-02-07 DOI: 10.1038/s44172-025-00355-z

Jiyang Liu, Feixue Wang, Xiaomei Tang, Sixin Wang, Muzi Yuan

{"title":"A multipath error cancellation method based on antenna jitter.","authors":"Jiyang Liu, Feixue Wang, Xiaomei Tang, Sixin Wang, Muzi Yuan","doi":"10.1038/s44172-025-00355-z","DOIUrl":"10.1038/s44172-025-00355-z","url":null,"abstract":"Global Navigation Satellite System signals are often affected by multipath errors, which impact the accuracy of positioning measurements. Traditional methods frequently fail to effectively mitigate multipath errors across different environments, primarily due to their inherent sensitivity to varying conditions. Here, we propose a multipath error cancellation method that utilizes antenna jitter, which mitigates multipath errors by rapidly changing the relative phases of direct and multipath signals without requiring changes to the receiver structure. The model that combines theoretical analysis with experimental verification is conducted to identify the minimum jitter amplitude required for effective error reduction in straight-line jitter scenarios. Moreover, extensive satellite data collection and verification were performed in Changsha, China, from December 2023 to August 2024. The results indicate that the proposed method enhances robustness and applicability across various environments compared to traditional approaches. Notably, it enables a vehicle-mounted antenna, priced at just a few dollars, to achieve positioning accuracy comparable to that of high-precision antennas costing thousands of dollars, making advanced positioning technology more accessible.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"17"},"PeriodicalIF":0.0,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11806055/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143371362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Periodic cooking of eggs.

Communications engineering Pub Date : 2025-02-06 DOI: 10.1038/s44172-024-00334-w

Emilia Di Lorenzo, Francesca Romano, Lidia Ciriaco, Nunzia Iaccarino, Luana Izzo, Antonio Randazzo, Pellegrino Musto, Ernesto Di Maio

引用次数: 0

Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring.

Communications engineering Pub Date : 2025-02-01 DOI: 10.1038/s44172-025-00347-z

Baile Cui, Wen Wang, Lina Cheng, Jing Jin, Anyu Hu, Zixuan Ren, Xufeng Xue, Yong Liang

{"title":"Acoustic impedance-based surface acoustic wave chip for gas leak detection and respiratory monitoring.","authors":"Baile Cui, Wen Wang, Lina Cheng, Jing Jin, Anyu Hu, Zixuan Ren, Xufeng Xue, Yong Liang","doi":"10.1038/s44172-025-00347-z","DOIUrl":"10.1038/s44172-025-00347-z","url":null,"abstract":"Acoustic impedance enables many interesting acoustic applications. However, acoustic impedance for gas sensing is rare and difficult. Here we introduce a micro-nano surface acoustic wave (SAW) chip based on the acoustic impedance effect to achieve ultra-fast and wide-range gas sensing. We theoretically established the relationship between surface load acoustic impedance and SAW attenuation, and analyzed the influence of acoustic impedance on acoustic propagation loss under different gas/humidity media. Experimental measurements reveal that the differences in acoustic impedance generated by different gases trigger different acoustic attenuation, and can achieve wide-range (0-100 v/v%) gas monitoring, with ultra-fast response and recovery speeds reaching sub-second levels (t90 < 1 s, t10 < 0.5 s) and detection limit of ~1 v/v%. This capability can also be perfectly utilized for human respiratory monitoring, accurately reflecting respiratory status, frequency, and intensity. Consequently, the SAW chip based on the acoustic impedance effect provides a new solution for in-situ detection of gas leaks and precise monitoring of human respiration.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"15"},"PeriodicalIF":0.0,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11787289/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Integrative lifecycle design approach based on carbon intensity for renewable-battery-consumer energy systems.

Communications engineering Pub Date : 2025-01-30 DOI: 10.1038/s44172-024-00339-5

Aoye Song, Yuekuan Zhou

{"title":"An Integrative lifecycle design approach based on carbon intensity for renewable-battery-consumer energy systems.","authors":"Aoye Song, Yuekuan Zhou","doi":"10.1038/s44172-024-00339-5","DOIUrl":"10.1038/s44172-024-00339-5","url":null,"abstract":"Driven by sustainable development goals and carbon neutrality worldwide, demands for both renewable energy and storage systems are constantly increasing. However, the lack of an appropriate approach without considering renewable intermittence and demand stochasticity will lead to capacity oversizing or undersizing. In this study, an optimal design approach is proposed for integrated photovoltaic-battery-consumer energy systems in the form of a m2-kWp-kWh relationship in both centralized and distributed formats. Superiorities of the proposed matching degree approach are compared with the traditional uniformity approach, in photovoltaic capacity, battery capacity, net present value and lifecycle carbon intensity. Results showed that the proposed method is superior to the traditional approach with higher net present value and lower carbon intensity. Furthermore, the proposed method can be scaled and applied to guide the design of photovoltaic-battery-consumer energy systems in different climate zones, promoting sustainable development and carbon neutrality globally.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"14"},"PeriodicalIF":0.0,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11782646/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143069750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission.

Communications engineering Pub Date : 2025-01-29 DOI: 10.1038/s44172-025-00351-3

Abhinand Venugopalan, Karanveer Singh, Janosch Meier, Thomas Schneider

{"title":"Signal theory based encryption of faster-than-Nyquist signals for fiber and wireless transmission.","authors":"Abhinand Venugopalan, Karanveer Singh, Janosch Meier, Thomas Schneider","doi":"10.1038/s44172-025-00351-3","DOIUrl":"10.1038/s44172-025-00351-3","url":null,"abstract":"New applications such as the Internet of Things, autonomous driving, Industry X.0 and many more will transmit sensitive information via fibers and over the air with envisioned data rates beyond terabits per second. Therefore, the encryption has to be simple, fast and spectrally efficient, so that the power consumption and latency are low and the scarce bandwidth is not wasted. Various encryption schemes, based on mathematical algorithms, quantum theory, chaos communication or spectral spreading below the noise level have been explored. Besides power, spectral efficiency and latency, most of these approaches face additional challenges such as limited data rates, compatibility issues with communication standards and integration. Here, we propose a signal theory based method that enables the encryption of super-signals with bandwidths of hundreds of gigahertz without any additional bandwidth. In proof-of-concept experiments we demonstrate the encryption of a 270 GBd faster than Nyquist super-signal in a 252.4 GHz bandwidth. The encryption is simple, fast and power efficient, and offers a solution for secure data transmission in existing and future communication networks.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"13"},"PeriodicalIF":0.0,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11779797/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143069755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Holomorphic embedding method for large-scale reverse osmosis desalination optimization.

Communications engineering Pub Date : 2025-01-28 DOI: 10.1038/s44172-025-00343-3

Junzhi Chen, Tao Wang, Jiu Luo, Hongbo Chen, Yi Heng

{"title":"Holomorphic embedding method for large-scale reverse osmosis desalination optimization.","authors":"Junzhi Chen, Tao Wang, Jiu Luo, Hongbo Chen, Yi Heng","doi":"10.1038/s44172-025-00343-3","DOIUrl":"10.1038/s44172-025-00343-3","url":null,"abstract":"Large-scale optimal design problems involving nonlinear differential equations are widely applied in modeling such as craft manufacturing, chemical engineering and energy engineering. Herein we propose a fast and flexible holomorphic embedding-based method to solve nonlinear differential equations quickly, and further apply it to handle the industrial application of reverse osmosis desalination. Without solving nonlinear differential equations at each discrete point by a traditional small-step iteration approach, the proposed method determines the solution through an approximation function or approximant within segmented computational domain independently. The results of solving more than 11 million of nonlinear differential equations with various design parameters for the reverse osmosis desalination process indicate that the fast and flexible holomorphic embedding-based method is six-fold faster than several typical solvers in computational efficiency with the same level of accuracy. The proposed computational method in this work has great application potential in engineering design.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"12"},"PeriodicalIF":0.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11775265/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143061344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intelligent shipping: integrating autonomous maneuvering and maritime knowledge in the Singapore-Rotterdam Corridor.

Communications engineering Pub Date : 2025-01-27 DOI: 10.1038/s44172-025-00346-0

Liang Zhao, Mengqiao Xu, Lei Liu, Yong Bai, Mingyang Zhang, Ran Yan

{"title":"Intelligent shipping: integrating autonomous maneuvering and maritime knowledge in the Singapore-Rotterdam Corridor.","authors":"Liang Zhao, Mengqiao Xu, Lei Liu, Yong Bai, Mingyang Zhang, Ran Yan","doi":"10.1038/s44172-025-00346-0","DOIUrl":"10.1038/s44172-025-00346-0","url":null,"abstract":"Designing safe and reliable routes is the core of intelligent shipping. However, existing methods for industrial use are inadequate, primarily due to the lack of considering company preferences and ship maneuvering characteristics. To address these challenges, here we introduce a methodological framework that integrates maritime knowledge and autonomous maneuvering model. Based on historical maritime big data, the framework offers customized routes for companies with specific routing preferences. The autonomous maneuvering model then evaluates the safety and reliability of the routes by considering ship motion characteristics and ocean hydrodynamics. We validate its effectiveness on the world's longest Green and Digital Shipping Corridor between Singapore and Rotterdam. Results demonstrate that our model can provide customized route design for companies and enhance safety for shipping. The framework could serve as a fundamental structure to build a fully digitalized platform for route customization and evaluation for global shipping, optimizing operational decision-making and safety assurance.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"11"},"PeriodicalIF":0.0,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11772882/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143054416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Post-processing methods for delay embedding and feature scaling of reservoir computers.

Communications engineering Pub Date : 2025-01-27 DOI: 10.1038/s44172-024-00330-0

Jonnel Jaurigue, Joshua Robertson, Antonio Hurtado, Lina Jaurigue, Kathy Lüdge

引用次数: 0

Machine learning empowered coherent Raman imaging and analysis for biomedical applications.

Communications engineering Pub Date : 2025-01-25 DOI: 10.1038/s44172-025-00345-1

Yihui Zhou, Xiaobin Tang, Delong Zhang, Hyeon Jeong Lee

引用次数: 0

A catalyst-coated diaphragm assembly to improve the performance and energy efficiency of alkaline water electrolysers.

Communications engineering Pub Date : 2025-01-25 DOI: 10.1038/s44172-025-00344-2

Zhuang Xu, Yanying Liu, Xiaobo Cheng, Yunshan Shang, Yongtao Wang, Jing Wang, Wenshi Li, Guangli He

{"title":"A catalyst-coated diaphragm assembly to improve the performance and energy efficiency of alkaline water electrolysers.","authors":"Zhuang Xu, Yanying Liu, Xiaobo Cheng, Yunshan Shang, Yongtao Wang, Jing Wang, Wenshi Li, Guangli He","doi":"10.1038/s44172-025-00344-2","DOIUrl":"10.1038/s44172-025-00344-2","url":null,"abstract":"Alkaline water electrolysers are ideal for gigawatt-scale hydrogen production due to the usage of non-precious metal and low-cost raw materials. However, their performances are modest with the separated electrode and diaphragm structure which can date back to more than 100 years ago. Here we report a catalyst-coated diaphragm assembly to improve the performance of alkaline water electrolysers. The transport resistance of OH- ions is reduced and the electrochemical surface area of catalysts is enlarged by more than forty fold, representing more than 40% increase in hydrogen production rate or as much as 16% reduction in energy consumption. The electrolyser with our catalyst-coated diaphragm assembly delivers current densities as high as 1 A cm-2 at 1.8 V or 2 A cm-2 at 2 V and shows good stability after more than 1000 hours of operation. Therefore, the catalyst-coated diaphragm assembly route is promising for the development of high-performance and efficient alkaline water electrolysers.","PeriodicalId":72644,"journal":{"name":"Communications engineering","volume":"4 1","pages":"9"},"PeriodicalIF":0.0,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11759708/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143043473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0