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:
Sep. 29, 2015
Filed:
Aug. 06, 2012
Paulo G. Normando, Fortaleza-CE, BR;
Carlos I. R. Bandeira, Fortaleza-CE, BR;
Darlan Cavalcante Moreira, Fortaleza-CE, BR;
Walter C. Freitas, Jr., Fortaleza-CE, BR;
Yuri C. B. Silva, Fortaleza-CE, BR;
Paulo G. Normando, Fortaleza-CE, BR;
Carlos I. R. Bandeira, Fortaleza-CE, BR;
Darlan Cavalcante Moreira, Fortaleza-CE, BR;
Walter C. Freitas, Jr., Fortaleza-CE, BR;
Yuri C. B. Silva, Fortaleza-CE, BR;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
In MU-MIMO scenarios, uncoordinated or external interference may be very significant. Such external interference can degrade the system performance as much as the internal interference. To address these problems, a desired signal subspace can be changed to avoid the external interference as much as possible. This technique can be applied in conjunction with systems that already cancel internal interference, such as Interference Alignment and Joint Processing. An original signal space may be broken down to desired and interference subspaces that are orthogonal to each other. The receiver can notify the transmitter of the boundary, and transmitter in turn can project the transmitted signal to fall into the desired subspace. The receiver can project the received signal into the desired subspace, which cancels everything not contained in the desired subspace.