How to calculate PMI and wireless communication system

Title:

How to calculate PMI and wireless communication system

Document Type and Number:

Japanese Patent JP6288314

Kind Code:

B2

Abstract:

A system includes an eNB which is operable to communicate with one or UEs and a set of multiple transmit antennas associated with the eNB. The antennas are partitioned into multiple antenna subsets. In a first form of the method, one of the antennas is designated as a reference antenna and the reference antenna forms part of each antenna subset. In a second form of the method, one of the subsets is designated as a reference subset. The UE(s) are operable to compute multiple PMIs for the respective multiple subsets and to report the multiple PMIs to the eNB for the eNB to use in precoding. The first form involves computing a PMI for a given antenna subset independently of the PMIs of any of the other antenna subsets. The second form involves computing a PMI for a given subset based on or using the PMI for the reference subset.

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Inventors:

Fans on
Yasushi Maruta

Application Number:

JP2016573625A

Publication Date:

March 07, 2018

Filing Date:

March 19, 2015

Export Citation:

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