Channels estimation for multiple input--multiple output, orthogonal frequency division multiplexing (OFDM) system
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United States of America Patent
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-
Feb 1, 2005
Grant Date -
Sep 5, 2002
app pub date -
Dec 29, 2000
filing date -
Sep 1, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The distortion in the sub-carrier signals is determined by transmitting known values that are incorporated into the preamble portion of the frame and/or are incorporated into pilot symbols that are inserted into the data portion of the frame. The receiver typically receives these known values in a distorted form and then processes the distorted values together with the original known values to obtain a channel response. The channel response is then used to estimate the frequencies at which the channels are received.
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