Communication system employing transmit macro-diversity
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United States of America Patent
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Feb 7, 2006
Grant Date -
May 15, 2003
app pub date -
Jul 26, 2001
filing date -
Jul 26, 2001
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Abstract
Coherent transmit macro-diversity involves transmitting simultaneous signals from one or more transmitters to one or more wireless receivers. Transmit signals are formed as weighted combinations of the individual information signals for each of the wireless receivers. By properly weighting these receiver-specific signals, the combined signals combine at each receiver to cancel all but the desired information signal for that receiver. This improves reception performance and allows multiple receivers to operate on the same communication channel in the same area if desired. The weighting factors used to form the combined signals are based on propagation path characteristics between each of the transmit antennas and each of the receivers. This information is generally referred organized as a channel estimate matrix and is used to filter the information signals such that they may be combined in the required weighted combinations.
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Patent Owner(s)
- ERICSSON INC.
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Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Dent, Paul Wilkinson | Pittsboro, NC | 106 | 4987 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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