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:
Jun. 26, 2012
Filed:
Oct. 20, 2011
Yang Tang, San Diego, CA (US);
Yajun Kou, San Diego, CA (US);
Young Hoon Kwon, San Diego, CA (US);
Zhigang Rong, San Diego, CA (US);
Yang Tang, San Diego, CA (US);
Yajun Kou, San Diego, CA (US);
Young Hoon Kwon, San Diego, CA (US);
Zhigang Rong, San Diego, CA (US);
Futurewei Technologies, Inc., Plano, TX (US);
Abstract
A system and method is provided for employing six-bit rank 1 and 2 codebooks for multiple transmit antennas. A channel estimate is generated for a communications channel that can be established between a communications device and a controller serving the communications device. The channel estimate can be quantized using a codebook to produce a selected codeword. An index corresponding to the selected codeword can be transmitted to the controller. The codebook can include a plurality of first level codewords, with each first level codeword having a plurality of subsidiary codewords. The quantizing can be in the form of a search of the first level codewords followed by a search of a subset of a plurality of subsidiary codewords, and the codebook can be derived at least in part from a rank of communications between the communications device and the controller.