Patent
Multiuser channel estimating and tracking method for large-scale MIMO system
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TLDR
In this article, a multiuser channel estimating and tracking method for a large-scale MIMO system was proposed, which comprises step 1, obtaining downlink user space channel information and space angle information through a downlink preamble frame pilot sequence.Abstract:
The invention provides a multiuser channel estimating and tracking method for a large-scale MIMO system. The multiuser channel estimating and tracking method comprises step 1, obtaining downlink user space channel information and space angle information through a downlink preamble frame pilot sequence; step 2, grouping downlink users according to the downlink user space channel information and the space angle information of the downlink users; and step 3, carrying out channel estimation and feedback according to the grouping condition of the downlink channel users. According to the multiuser channel estimating and tracking method for the large-scale MIMO system provided by the invention, no synchronization between the users is needed, and more user terminals can be served. Moreover, the downlink training pilot cost can be reduced, and the application of the FDD in the large-scale MIMO communication system is promoted; and the implementation complexity of the system is reduced, and the channel estimation precision in a time varying condition improved.read more
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References
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Patent
MIMO system channel estimation method and device in 60GHz indoor scene
TL;DR: In this paper, the authors proposed an MIMO system channel estimation method and device in a 60GHz indoor scene, and related to the field of communications, where the discrete Fourier transform is used as a spatial basis expansion model of orthogonal basis to parameterize a user equipment channel, thereby reducing the dimensionality of an unknown channel parameter, reducing training and feedback costs and easing pilot frequency pollution.
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