Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system
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United States of America Patent
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-
Oct 29, 2002
Issued Date -
N/A
app pub date -
Mar 30, 2000
filing date -
Mar 22, 2000
priority date (Note) -
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Abstract
Channel state information (CSI) can be used by a communications system to precondition transmissions between transmitter units and receiver units. In one aspect of the invention, disjoint sub-channel sets are assigned to transmit antennas located at a transmitter unit. Pilot symbols are generated and transmitted on a subset of the disjoint sub-channels. Upon receipt of the transmitted pilot symbols, the receiver units determine the CSI for the disjoint sub-channels that carried pilot symbols. These CSI values are reported to the transmitter unit, which will use these CSI values to generate CSI estimates for the disjoint sub-channels that did not carry pilot symbols. The amount of information necessary to report CSI on the reverse link can be further minimized through compression techniques and resource allocation techniques.
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