The Farrell Law Firm, LLP
Downlink beamforming apparatus in OFDMA system and transmission apparatus including the same
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.
SK Telecom Co., Ltd. KT Corporation Hanaro Telecom., Inc. Electronics & Telecommunications Research Institute Samsung Electronics Co., Ltd.
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H04L H04B Y02D H04L H04L
inventional inventional additional inventional additional
Kyung-Yeol Hyeong-Sook Dae-Ho Jun-Woo Youn-Ok
Sohn Park Kim Kim Park