Non-adaptive symbol error count based algorithm for CDMA reverse link outer loop power control
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United States of America Patent
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Apr 17, 2001
Grant Date -
N/A
app pub date -
Mar 31, 1998
filing date -
Mar 31, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a cellular system based on industry standard IS-95 CDMA (code division multiple access), a symbol error count based reverse link outer loop power control technique uses non-adaptive SER targets. In particular, a base station set a fixed target for a 2.sup.nd order statistic, e.g., standard deviation (variance), of the symbol error count as a function of a target frame error rate (FER). The base station monitors a symbol error count of a received signal (transmitted from a mobile station). This symbol error count is used to update an estimate of the standard deviation of the symbol error count. This estimate of the standard deviation of the symbol error count is compared with a target standard deviation of the symbol error count to make changes in the E.sub.bT /N.sub.0T target. The adjusted E.sub.bT /N.sub.0T target is used to provide power control.
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