Optimizing the analog BER function in a spatial angular diversity digital radio receiver
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United States of America Patent
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Dec 3, 1996
Issued Date -
N/A
app pub date -
Sep 12, 1994
filing date -
May 25, 1992
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Abstract
A radio link for a digital radio transmission system having spatial and/or angular diversity is optimized in real time by searching for a minimum of the analog BER function BERn(.phi.), by analyzing the minimum to determine if it is an 'absolute' minimum that will result in an optimal radio link, and if not, searching for another minimum until the absolute minimum is located. Once the relative phase .phi. corresponding to the absolute minimum has been thus determined with both channels having the same nominal attenuation level, the relative attenuation level T of the two channels may then be varied in order to optimize the dispersion Ban.sub.n (T) of the recombined data spectrum while holding the relative phase at its previously optimized value.
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