Method and instrument for measuring receiving SIR and transmission power controller
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 7, 2000
Grant Date -
N/A
app pub date -
Dec 12, 1997
filing date -
Apr 12, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An SIR measuring apparatus with a simple configuration capable of improving the accuracy of received SIR measurement in CDMA mobile radio equipment using pilot symbols. A received signal (20) is input to a synchronization detector (21) that regenerates the clock timing of symbols and frame timing equivalent to the repetition period of the pilot signal. An interpolating coherent detector (22) produces information symbols (23) obtained from the received signal (20) through absolute phase coherent detection. A decision signal power calculator (24) obtains desired wave power values. A quasi-interference power calculator (25) obtains differences between the power values of the information symbols and a fading envelope, and adopts the differences as the quasi-interference power. Integrators (26 and 27) integrate received desired wave power and quasi-interference wave power. An SIR measuring portion (28) divides an averaged received desired wave power integral by an averaged quasi-interference power integral to obtain the received SIR (29).
First Claim
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