Method for reference signal generation in the presence of frequency offsets in a communications station with spatial processing
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United States of America Patent
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Feb 10, 2004
Issued Date -
N/A
app pub date -
Jun 6, 2001
filing date -
Oct 11, 1996
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Abstract
A method for generating a reference signal from a modulated signal transmitted to a communications station that includes an array of antenna elements and spatial processing means including: separating from the signals received at the antenna elements a copy signal corresponding to the signal transmitted by a particular remote station using an initial spatial weight vector corresponding to the particular remote station; determining from the terminal copy signal a reference signal having substantially the same frequency offset and time alignment as the received antenna signals; and computing a new spatial weight vector by optimizing a cost function, the cost function using the received antenna signals and the reference signal. For demodulation, the method further includes extracting the symbols of the modulated signal.
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