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Yi Xu
Researcher at Auburn University
Publications - 41
Citations - 726
Yi Xu is an academic researcher from Auburn University. The author has contributed to research in topics: Computer science & Cognitive radio. The author has an hindex of 9, co-authored 30 publications receiving 579 citations. Previous affiliations of Yi Xu include Tsinghua University & Princeton University.
Papers
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Journal ArticleDOI
User Grouping for Massive MIMO in FDD Systems: New Design Methods and Analysis
Yi Xu,Guosen Yue,Shiwen Mao +2 more
TL;DR: Three novel similarity measures for user grouping based on weighted likelihood, subspace projection, and Fubini-Study, respectively, as well as two novel clustering methods, including hierarchical and K-medoids clustering, are proposed for FDD massive MIMO systems.
Journal ArticleDOI
A survey of mobile cloud computing for rich media applications
Yi Xu,Shiwen Mao +1 more
TL;DR: This article reviews mobile cloud computing, with focus on the technical challenges of MCC for multimedia applications, and briefly review the prototypes.
Proceedings ArticleDOI
Vision-Language Pre-Training with Triple Contrastive Learning
Jinyu Yang,Jiali Duan,Son Tran,Yi Xu,Sampath Chanda,Liqun Chen,Belinda Zeng,Trishul Chilimbi,Junzhou Huang +8 more
TL;DR: TCL is the first work that takes into account local structure information for multi-modality representation learning and achieves the new state of the art on various common downstream vision-language tasks such as image-text retrieval and visual question answering.
Journal ArticleDOI
User Association in Massive MIMO HetNets
Yi Xu,Shiwen Mao +1 more
TL;DR: This paper investigates the problem of user association in a heterogeneous network with massive MIMO and small cells, where the macro base station is equipped with a massive M IMO, and the picocell BSs are equipped with regular MIMOs.
Proceedings ArticleDOI
User grouping and scheduling for large scale MIMO systems with two-stage precoding
TL;DR: This paper proposes an improved K-means user grouping scheme which allocates the users to different pre-beamforming groups using the second-order channel statistics, and a dynamic user scheduling scheme where second-stage precoding is designed based on instantaneous channel conditions.