Method for selecting switched orthogonal beams for downlink diversity transmission
AssigneeAgency for Science, Technology and Research
InventorsZhongding Lei, Po Shin Francois Chin, Ying Chang Liang
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Abstract
A scheme for selecting two beams in a switched beam antenna system for providing downlink communications in a downlink channel, the switched beam antenna system providing uplink reception and downlink transmission is described. The scheme involves selecting a pair of beams based on the uplink reception of the switched beam antenna system, and determining from the pair of beams a corresponding pair of orthogonal beams. The scheme also involves providing the pair of orthogonal beams as a pair of transmit beams for the downlink transmission of the switched beam antenna system.
Claims20
A method for selecting two beams in a switched beam antenna system for providing downlink communications in a downlink channel, the switched beam antenna system providing uplink reception and downlink transmission, the method comprising the steps of:
- selecting a pair of beams based on the uplink reception of the switched beam antenna system;
- determining from the pair of beams a corresponding pair of orthogonal beams;
- and
- providing the pair of orthogonal beams as a pair of transmit beams for the downlink transmission of the switched beam antenna system.
A switched beam antenna system for selecting two beams for providing downlink communications in a downlink channel wherein the switched beam antenna system provides uplink reception and downlink transmission, comprising:
- means for selecting a pair of beams based on the uplink reception of the switched beam antenna system;
- means for determining from the pair of beams a corresponding pair of orthogonal beams;
- and
- means for providing the pair of orthogonal beams as a pair of transmit beams for the downlink transmission of the switched beam antenna system.
Dependencies are inferred from the claim text.