This signal is compared with a desired transmit power level, which comprises an open-loop gain component and a closed-loop gain component.
A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode.
Initially, the closed-loop gain of the amplifier itself must be more than 3 (Acl > 3) until the output signal builds up to a desired level.
The greater the LPC gain, the greater the closed loop gain contribution.
For background noise, the smaller of the closed and open loop gains are used as the normalization factor.
The encoder utilizes gain normalization wherein LPC (linear predictive coding) gain provides a smoothing factor for combining both open and closed loop gains.
The negation of the distortion is most successful if this derivative signal is shifted in phase and gain to compensate for the closed loop phase and gain of the amplifier.
A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit (18) for receiving an input signal, which is susceptible to variations in signal power, and a control signal.
A circuit (1) comprising op-amps (7) configured in a non-inverting mode with a closed loop gain of two provided by first and second resistors (R1) and (R2).
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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