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:
Aug. 26, 2014
Filed:
Dec. 05, 2011
Mark Kent, Vista, CA (US);
Vinko Erceg, Cardiff, CA (US);
Jun Zheng, San Diego, CA (US);
Uri Landau, San Diego, CA (US);
Mark Kent, Vista, CA (US);
Vinko Erceg, Cardiff, CA (US);
Jun Zheng, San Diego, CA (US);
Uri Landau, San Diego, CA (US);
Broadcom Corporation, Irvine, CA (US);
Abstract
Aspects of a method and system for an alternating delta quantizer for limited feedback MIMO pre-coders may comprise quantizing a change in channel state information in a MIMO pre-coding system onto at least a first and a second codebook, each of which comprises one or more unitary matrices, using a cost function; feeding back, in an alternating manner, an index to an element of at least the first codebook or the second codebook, associated with the quantizing, from a receiver to a transmitter in said MIMO pre-coding system, and generating the at least first and second codebook based on at least the channel state information. The channel state information may be a matrix V and the cost function may be defined by the following relationship: where A is a matrix of size N by N and ais element (i,j) of matrix A.