The Experts below are selected from a list of 55020 Experts worldwide ranked by ideXlab platform
Joachim Sachs - One of the best experts on this subject based on the ideXlab platform.
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time synchronization in 5g wireless edge requirements and solutions for critical mtc
IEEE Communications Magazine, 2019Co-Authors: Aamir Mahmood, Muhammad Ikram Ashraf, Mikael Gidlund, Johan Torsner, Joachim SachsAbstract:The wireless edge is about distributing intelligence to wireless devices wherein the distribution of accurate time reference is essential for time-critical machine-type communication (cMTC). In 5G-based cMTC, enabling time synchronization in the wireless edge means moving beyond the current synchronization needs and solutions in 5G radio access. In this article, we analyze the device-level synchronization needs of potential cMTC applications: industrial automation, power distribution, vehicular communication, and live audio/Video Production. We present an overthe- air synchronization scheme comprising 5G air interface parameters and discuss their associated timing errors. We evaluate the estimation error in device-to-base-station propagation delay from timing advance under random errors and show how to reduce the estimation error. In the end, we identify the random errors specific to dense multipath fading environments and discuss countermeasures.
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time synchronization in 5g wireless edge requirements and solutions for critical mtc
arXiv: Information Theory, 2019Co-Authors: Aamir Mahmood, Muhammad Ikram Ashraf, Mikael Gidlund, Johan Torsner, Joachim SachsAbstract:Wireless edge is about distributing intelligence to the wireless devices wherein the distribution of accurate time reference is essential for time-critical machine-type communication (cMTC). In 5G-based cMTC, enabling time synchronization in the wireless edge means moving beyond the current synchronization needs and solutions in 5G radio access. In this article, we analyze the device-level synchronization needs of potential cMTC applications: industrial automation, power distribution, vehicular communication, and live audio/Video Production. We present an over-the-air (OTA) synchronization scheme comprised of 5G air interface parameters, and discuss their associated timing errors. We evaluate the estimation error in device-to-base station propagation delay from timing advance (TA) under random errors and show how to reduce the estimation error. In the end, we identify the random errors specific to dense multipath fading environments and discuss countermeasures.
Mary Moen - One of the best experts on this subject based on the ideXlab platform.
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learning to engage how positive attitudes about the news media literacy and Video Production contribute to adolescent civic engagement
Educational Media International, 2013Co-Authors: Renee Hobbs, Katie Donnelly, Jonathan Friesem, Mary MoenAbstract:Many students enroll in Video Production courses in high school as part of a vocational, career, or technical program. While there has been an explosion of scholarly work in digital literacy in informal settings, less is known about how digital and media literacy competencies are developed through school-based Video Production courses. This study explores the relationship between civic engagement and the various multimedia instructional practices used in a high school Video Production course with a single-school convenience sample and an ethnically diverse population of students. Findings reveal that the best predictors of the intent to participate in civic engagement are having positive attitudes about news, current events, reporting, and journalism. Media literacy attitudes and a range of in-classroom learning experiences with Video Production are also associated with civic engagement.
Yue Wang - One of the best experts on this subject based on the ideXlab platform.
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ugc Video perceptual quality assessment of user generated Videos
2020 IEEE Conference on Multimedia Information Processing and Retrieval (MIPR), 2020Co-Authors: Shengbin Meng, Shiqi Wang, Xueyao Zhang, Yue WangAbstract:Recent years have witnessed an ever-expanding volume of user-generated content (UGC) Videos available on the Internet. Nevertheless, progress on perceptual quality assessment of UGC Videos still remains quite limited. A distinguished characteristic of UGC Videos in the complete Video Production and delivery chain is that they often undergo multiple compression stages before ultimately viewed and there does not exist the pristine source after they are uploaded to the hosting platform. To facilitate the UGC Video quality assessment (VQA), we create a UGC Video perceptual quality assessment database. It contains 50 source Videos collected from TikTok with diverse content, along with multiple transcoded versions generated by different coding standards and quantization levels. Subjective quality assessment has been conducted to evaluate the Video quality. Furthermore, we benchmark the database using existing quality assessment algorithms, and potential room is observed to further improve the accuracy of UGC Video quality measures.
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ugc Video perceptual quality assessment of user generated Videos
arXiv: Multimedia, 2019Co-Authors: Shengbin Meng, Shiqi Wang, Xueyao Zhang, Yue WangAbstract:Recent years have witnessed an ever-expandingvolume of user-generated content (UGC) Videos available on the Internet. Nevertheless, progress on perceptual quality assessmentof UGC Videos still remains quite limited. There are many distinguished characteristics of UGC Videos in the complete Video Production and delivery chain, and one important property closely relevant to Video quality is that there does not exist the pristine source after they are uploaded to the hosting platform,such that they often undergo multiple compression stages before ultimately viewed. To facilitate the UGC Video quality assessment,we created a UGC Video perceptual quality assessment database. It contains 50 source Videos collected from TikTok with diverse content, along with multiple distortion versions generated bythe compression with different quantization levels and coding standards. Subjective quality assessment was conducted to evaluate the Video quality. Furthermore, we benchmark the database using existing quality assessment algorithms, and potential roomis observed to future improve the accuracy of UGC Video quality measures.
Aamir Mahmood - One of the best experts on this subject based on the ideXlab platform.
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time synchronization in 5g wireless edge requirements and solutions for critical mtc
IEEE Communications Magazine, 2019Co-Authors: Aamir Mahmood, Muhammad Ikram Ashraf, Mikael Gidlund, Johan Torsner, Joachim SachsAbstract:The wireless edge is about distributing intelligence to wireless devices wherein the distribution of accurate time reference is essential for time-critical machine-type communication (cMTC). In 5G-based cMTC, enabling time synchronization in the wireless edge means moving beyond the current synchronization needs and solutions in 5G radio access. In this article, we analyze the device-level synchronization needs of potential cMTC applications: industrial automation, power distribution, vehicular communication, and live audio/Video Production. We present an overthe- air synchronization scheme comprising 5G air interface parameters and discuss their associated timing errors. We evaluate the estimation error in device-to-base-station propagation delay from timing advance under random errors and show how to reduce the estimation error. In the end, we identify the random errors specific to dense multipath fading environments and discuss countermeasures.
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time synchronization in 5g wireless edge requirements and solutions for critical mtc
arXiv: Information Theory, 2019Co-Authors: Aamir Mahmood, Muhammad Ikram Ashraf, Mikael Gidlund, Johan Torsner, Joachim SachsAbstract:Wireless edge is about distributing intelligence to the wireless devices wherein the distribution of accurate time reference is essential for time-critical machine-type communication (cMTC). In 5G-based cMTC, enabling time synchronization in the wireless edge means moving beyond the current synchronization needs and solutions in 5G radio access. In this article, we analyze the device-level synchronization needs of potential cMTC applications: industrial automation, power distribution, vehicular communication, and live audio/Video Production. We present an over-the-air (OTA) synchronization scheme comprised of 5G air interface parameters, and discuss their associated timing errors. We evaluate the estimation error in device-to-base station propagation delay from timing advance (TA) under random errors and show how to reduce the estimation error. In the end, we identify the random errors specific to dense multipath fading environments and discuss countermeasures.
Renee Hobbs - One of the best experts on this subject based on the ideXlab platform.
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learning to engage how positive attitudes about the news media literacy and Video Production contribute to adolescent civic engagement
Educational Media International, 2013Co-Authors: Renee Hobbs, Katie Donnelly, Jonathan Friesem, Mary MoenAbstract:Many students enroll in Video Production courses in high school as part of a vocational, career, or technical program. While there has been an explosion of scholarly work in digital literacy in informal settings, less is known about how digital and media literacy competencies are developed through school-based Video Production courses. This study explores the relationship between civic engagement and the various multimedia instructional practices used in a high school Video Production course with a single-school convenience sample and an ethnically diverse population of students. Findings reveal that the best predictors of the intent to participate in civic engagement are having positive attitudes about news, current events, reporting, and journalism. Media literacy attitudes and a range of in-classroom learning experiences with Video Production are also associated with civic engagement.
