Method of obtaining a transmission gain function
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United States of America Patent
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Apr 22, 2003
Grant Date -
Jun 20, 2002
app pub date -
Oct 22, 2001
filing date -
Oct 31, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Method of obtaining a transmission gain function for an array of antennae communicating to a telecommunication terminal. The method includes determining a first weighting vector b.sub.u maximizing on reception by the array a ratio (C/(I.sub.u +N.sub.u)).sub.u of a received signal coming from the telecommunication terminal to a noise plus interference disturbing an uplink channel, and calculating from the first weighting vector b.sub.u a second weighting vector b.sub.d maximizing on reception by the telecommunication terminal a ratio (C/(I.sub.d +N.sub.d)).sub.d of a received signal coming from the array to a noise plus interference disturbing the downlink channel. The second weighting vector is in the form of a matrix product including a first noise matrix D.sub.u which is a function of a power of the first isotropic noise and/or a power of the first directional noise and a second noise matrix D.sub.d which is a function of a power of the second isotropic noise and/or a power of the second directional noise.
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