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:
Jan. 12, 2010
Filed:
Dec. 11, 2006
Hyeong-sook Park, Daejeon, KR;
Kyung-yeol Sohn, Daejeon, KR;
Dae-ho Kim, Daejeon, KR;
Jun-woo Kim, Daejeon, KR;
Youn-ok Park, Daejeon, KR;
Hyeong-Sook Park, Daejeon, KR;
Kyung-Yeol Sohn, Daejeon, KR;
Dae-Ho Kim, Daejeon, KR;
Jun-Woo Kim, Daejeon, KR;
Youn-Ok Park, Daejeon, KR;
Samsung Electronics Co., Ltd., , KR;
Electronics & Telecommunications Research Institute, , KR;
KT Corporation, , JP;
SK Telecom Co., Ltd., , KR;
Hanaro Telecom., Inc., , KR;
Abstract
A downlink beamforming apparatus and a transmission apparatus including the same includes a subcarrier based user identifier for dividing subcarriers according to users, a beamforming weight buffer for storing first beamforming weights for the subcarriers by each of transmitting antennas, an interpolator for outputting second beamforming weights for each transmitting antenna by interpolating the first beamforming weights, and a signal reproducer for reproducing the signal for each transmitting antenna. Subcarriers are allocated to the signal by each user; and a complex multiplier multiplies the signal for each transmitting antenna by the second beamforming weights.