Gain control device
OwnerKuniyuki Kajitainventor
Life of this patent
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Abstract
A convergence coefficient determination section 104 compares an average value calculated by an average value calculator 103 with a preset threshold value, and determines a convergence coefficient. A gain coefficient determination section 106 determines a control gain based on the aforementioned convergence coefficient and the aforementioned average value. A gain/voltage converter 107 converts the gain coefficient to a voltage to obtain a voltage control value. A GCA 101 amplifies a received signal in accordance with the voltage control value after it has undergone digital conversion.
Claims14
A gain control apparatus comprising:
- convergence coefficient determining means for determining a convergence coefficient based on a received level of a received signal;
- detecting means for detecting a difference value between a reference value obtained using the received signal and a preset target value;
- voltage control value calculating means for calculating a voltage control value based on a detection result of said detecting means and the convergence coefficient;
- and
- amplifying means for amplifying the received signal in accordance with the voltage control value calculated by said voltage control value calculating means.
A communication terminal apparatus provided with a gain control apparatus, said gain control apparatus comprising:
- convergence coefficient determining means for determining a convergence coefficient based on a received level of a received signal;
- detecting means for detecting a difference value between a reference value obtained using the received signal and a preset target value;
- voltage control value calculating means for calculating a voltage control value based on a detection result of said detecting means and the convergence coefficient;
- and
- amplifying means for amplifying the received signal in accordance with the voltage control value calculated by said voltage control value calculating means.
A base station apparatus provided with a gain control apparatus, said gain control apparatus comprising:
- convergence coefficient determining means for determining the convergence coefficient based on the received level of a received signal;
- detecting means for detecting a difference value between the reference value obtained using the received signal and a preset target value;
- voltage control value calculating means for calculating a voltage control value based on a detection result of said detecting means and the convergence coefficient;
- and
- amplifying means for amplifying the received signal in accordance with the voltage control value calculated by said voltage control value calculating means.
A gain control method comprising the steps of:
- determining a convergence coefficient based on a received level of a received signal;
- detecting a difference value between a reference value obtained using said received signal and a preset target value;
- calculating a voltage control value based on a detection result and the convergence coefficient;
- and
- amplifying the received signal in accordance with the calculated voltage control value.
Dependencies are inferred from the claim text.