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1. (WO2018082772) TECHNIQUES FOR PRECODING BEAMFORMING DATA BASED ON EIGENVALUES APPROXIMATION

Pub. No.:    WO/2018/082772    International Application No.:    PCT/EP2016/076505
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Fri Nov 04 00:59:59 CET 2016
IPC: H04B 7/0413
H04B 7/06
H04L 25/00
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
TSODIK, Genadiy
Inventors: TSODIK, Genadiy
SHILO, Shimon
EZRI, Doron
BEN-ARIE, Yaron
REDLICH, Oded
Title: TECHNIQUES FOR PRECODING BEAMFORMING DATA BASED ON EIGENVALUES APPROXIMATION
Abstract:
The disclosure relates to a wireless communication device (300), comprising: a processor (301), configured: to precode beamforming data for transmission over a multiple input multiple output (MIMO) channel, the precoding based on an estimated channel matrix (C), and to adjust the precoding based on decomposition, in particular singular value decomposition of the channel matrix (C), comprising: transforming the channel matrix (C) to a bi-diagonal matrix (R); and zeroing off-diagonal elements of the bi-diagonal matrix (R), wherein the zeroing comprises deriving a transform matrix (T) from the bi-diagonal matrix (R) and approximating eigenvalues of the transform matrix (T) by elements on the main diagonal of the transform matrix (T).