Estimating channel parameters in multi-input, multi-output (MIMO) systems
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United States of America Patent
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Dec 18, 2007
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N/A
app pub date -
Apr 24, 2002
filing date -
Apr 24, 2001
priority date (Note) -
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Abstract
In a communication system, and in particular a wireless Orthogonal Frequency Division Multiplexing (OFDM) communication system, the present invention provides systems for estimating parameters of a channel across which a signal is transmitted. The present invention may be used in a Multi-Input, Multi-Output (MIMO) system in which the data is transmitted from any number of transmitting antennas and received by any number of receiving antennas. The number of transmitting and receiving antennas does not necessarily have to be the same. Circuitry is provided for calculating parameters indicative of the characteristics of the communication channel. Estimates of channel parameters may include channel estimates and noise variance estimates.
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