Method for selecting propagation paths retained for receiving messages transmitted by CDMA radiocommunication
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United States of America Patent
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Sep 5, 1995
Grant Date -
N/A
app pub date -
Aug 12, 1994
filing date -
Aug 13, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Each path is identified by a delay which is applied to at least one spreading sequence for determining a correlation between the received signal ans said spreading sequence. For each selected delay, a reception energy, contained in the CDMA signal consisting of a correlation between the received signal and a reference spreading sequence, is estimated. Delays to be tested are randomly chosen with a choice probability having a maximum for a delay substantially equal to the smallest selected delay. The delays thus chosen are tested by estimating the reception energy associated thereto. When the reception energy for a tested delay is greater than at least one of the reception energies associated to the previously selected delays, the tested delay is substituted for the previously selected delay having the smallest reception energy.
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