Adaptive multiple-input multiple-output (MIMO) data detection and precoding

M Wu, CH Dick, CE Studer - US Patent 9,525,470, 2016 - Google Patents
BACKGROUND MIMO operation in combination with spatial multiplex ing is used in various
wireless standards, such as IEEE 802.11 n, IEEE 802.11 ac, Evolved High-Speed Packet …

Computation of solution to sparse matrix

MW Willits, E Schwartz, SR Selnick - US Patent 11,249,684, 2022 - Google Patents
Discussed herein are devices, systems, and methods for efficient sparse matrix factorization.
A method can include writing matrix data representing a sparse matrix to a memory, after …

Methods for sending and receiving synchronization signals and signals subjected to perfect omnidirectional pre-coding in large-scale MIMO system

X Gao, X Meng - US Patent 10,998,968, 2021 - Google Patents
An EnodeB or a transmitting device intermittently generates synchronization signals, and
then performs perfect omnidirectional pre-coding processing on the synchronization signals; …

Stream processing for LU decomposition

MMIR AHMADI, S Wagner - US Patent 10,664,552, 2020 - Google Patents
An apparatus and method for LU decomposition of an input matrix, the input matrix
comprising a multitude of elements forming a plurality of rows and columns. In an …

Stream processing for LU decomposition

MMIR AHMADI, S Wagner - US Patent 10,331,762, 2019 - Google Patents
An apparatus and method for LU decomposition of an input matrix, the input matrix
comprising a multitude of elements forming a plurality of rows and columns. In an …

Omni-directional transmission in large-scale MIMO systems

X Gao, X Meng, W Zhong - US Patent 10,271,222, 2019 - Google Patents
BACKGROUND SUMMARY OF THE INVENTION An emerging research area in multi-user
MIMO commu nications is so-called massive MIMO or large-scale MIMO 25 The presently …