The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 26, 2019
Filed:
Nov. 25, 2014
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Ulf Gustavsson, Göteborg, SE;
Thomas Eriksson, Göteborg, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A transmitter for radio transmission to one or more receivers over a channel described at least in part by a channel matrix H, the transmitter comprising a pre-coder connected to an antenna array via a transmit unit, the antenna array comprising a number M of antenna elements a, m=1, 2, . . . , M, each antenna element am being configured to receive a respective transmit signal component xfrom the pre-coder via the transmit unit, the pre-coder being configured to receive a number K<M of data streams sk, k=1, 2, . . . , K, and to generate the M transmit signal components, wherein the generating comprises adding M shaping components e, m=1, 2, . . . , M, to respective transmit signal components x, the shaping components ebeing generated based on a null-space of the channel matrix H and on one or more properties of the transmit unit.