P
Pengfei Xia
Researcher at Tongji University
Publications - 132
Citations - 6054
Pengfei Xia is an academic researcher from Tongji University. The author has contributed to research in topics: Beamforming & Precoding. The author has an hindex of 36, co-authored 132 publications receiving 5287 citations. Previous affiliations of Pengfei Xia include University of Minnesota & InterDigital, Inc..
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Achieving the Welch bound with difference sets
TL;DR: This work constructs analytically optimal codebooks meeting the Welch lower bound, and develops an efficient numerical search method based on a generalized Lloyd algorithm that leads to considerable improvement on the achieved I/sub max/ over existing alternatives.
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Enabling UAV cellular with millimeter-wave communication: potentials and approaches
TL;DR: A close relationship is identified between UAV positioning and directional mmWave user discovery, where update of the former may directly impact the latter and vice versa and different ways of dealing with signal blockage are explored.
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Hierarchical Codebook Design for Beamforming Training in Millimeter-Wave Communication
TL;DR: This paper devise an efficient hierarchical codebook by jointly exploiting sub-array and deactivation (turning-off) antenna processing techniques, where closed-form expressions are provided to generate the codebook.
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Hierarchical Codebook Design for Beamforming Training in Millimeter-Wave Communication
TL;DR: In this article, the authors proposed two basic criteria for the hierarchical codebook design, and devised an efficient hierarchical code book by jointly exploiting sub-array and deactivation (turning-off) antenna processing techniques, where closed-form expressions are provided to generate the codebook.
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Design and analysis of transmit-beamforming based on limited-rate feedback
TL;DR: This paper deals with design and performance analysis of transmit beamformers for multiple-input multiple-output (MIMO) systems based on bandwidth-limited information that is fed back from the receiver to the transmitter.