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Orthogonal switched beams for downlink diversity transmission

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3 Author(s)
Zhongding Lei ; Inst. for Infocomm Res., Singapore, Singapore ; F. P. S. Chin ; Ying-Chang Liang

A downlink transmission scheme in a switched-beam antenna system for providing diversity and beamforming simultaneously based on the space-time block coding technique is proposed. The scheme involves selecting multiple beams based on the uplink reception of the switched-beam antenna system, and determining multiple orthogonal beams from the selected beams. With the orthogonal transmit beams, the proposed switched-beam antenna system outperforms conventional switched-beam systems and approaches the optimal performance achievable by a much complex adaptive antenna system.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:53 ,  Issue: 7 )