APPARATUSES AND METHODS FOR NON-LINEAR PRECODING

Title:

APPARATUSES AND METHODS FOR NON-LINEAR PRECODING

Document Type and Number:

WIPO Patent Application WO/2019/140610

Kind Code:

A1

Abstract:

Systems, methods, apparatuses, and computer program products for non-linear precoding are provided. One method may include combining, by a network node, of linear and non-linear precoding, for example based on specific channel state information acquisition from at least one user equipment, and generating two types of demodulation reference signals for the concatenated linear and non-linear precoding. The method may include multiplexing, by the network node, the two types of demodulation reference signals with data. A first of the two types of demodulation reference signals may be linearly precoded with one linear precoding matrix from a first-stage linear precoder, and another one of the two types may be linearly precoded with both the first-stage linear precoder and a feedforward filter in a second-stage non-linear precoder from the concatenation of linear and nonlinear precoders.

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Inventors:

SONG NUAN (CN)
VISOTSKY EUGENE (US)
VOOK FREDERICK (US)
ENESCU MIHAI (FI)

Application Number:

PCT/CN2018/073282

Publication Date:

July 25, 2019

Filing Date:

January 18, 2018

Export Citation:

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Assignee:

NOKIA SHANGHAI BELL CO LTD (CN)
NOKIA SOLUTIONS & NETWORKS OY (FI)
NOKIA TECHNOLOGIES OY (FI)

International Classes:

H04L5/00

Foreign References:

EP2919392A1	2015-09-16
CN106982078A	2017-07-25
CN106992805A	2017-07-28
CN106453167A	2017-02-22
EP2800283A1	2014-11-05

Other References: