Telecommunications – Transmitter and receiver at separate stations – With control signal
Reexamination Certificate
2011-03-15
2011-03-15
Mehrpour, Melody (Department: 2617)
Telecommunications
Transmitter and receiver at separate stations
With control signal
Reexamination Certificate
active
07907912
ABSTRACT:
Provided are an apparatus and method for eliminating multi-user interference in a codebook-based beamforming system. A transmitter for providing a service to multi-users in the codebook-based beamforming system includes a beamformer for generating beamformed user signals by multiplying transmit data of users, to whom the service is to be provided, by corresponding weighting factor vectors using feedback information; a null space generator for generating a null space matrix orthogonal to weighting factor vectors of other users; and a projector for projecting the beamformed user signals on the corresponding null space matrix and transmitting the resulting signals through a plurality of antennas. Because the multi-user signals can maintain orthogonality, the performance degradation caused by the multi-user interference can be prevented.
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Cho Myeon-Kyun
Kim Kyeong-Yeon
Kim Yung-soo
Lee Chung-Yong
Nam Seung-Hoon
Industry-Academic Cooperation Foundation - Yonsei University
Mehrpour Melody
Samsung Electronics Co,. Ltd
The Farrell Law Firm P.C.
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