APPARATUS AND METHOD FOR CONTROLLING GAIN OF POLAR TRANSMITTER
First Claim
1. An apparatus for controlling gain according to a magnitude change of an output signal in a polar transmitter, the apparatus comprising:
- a signal generating unit configured to receive and modulate a transmission signal, separate the modulated signal into a phase signal and a magnitude signal, generate a pulse signal by using the magnitude signal, and convert the phase signal into a wireless signal;
a gain correcting unit configured to extract a transmission gain from magnitude information of a resource block of the transmission signal, provide a gain value to the signal generating unit, and generate an envelope signal for a power amplification by using the pulse signal of the signal generating unit;
a power amplifying module configured to receive the envelope signal, and perform a power amplification or a simple amplification according to a selection signal and the envelope signal; and
a gain controlling unit configured to determine a magnitude of a signal generated by the signal generating unit by using a power control signal for the transmission signal, determine a gain mode, and output the selection signal.
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Accused Products
Abstract
Disclosed is an apparatus for transmitting complex signals in a wireless communication system. The present invention, there is provided a method for controlling gain according to a magnitude change of output signals in a polar transmitter including an amplification unit having two or more amplification degrees, the method includes processes to control an output level of a modulated signal when a output-required power of transmission signals are less than a predetermined threshold value, and to perform a basic amplification through the amplification unit; to amplify the amplification unit at a first amplification level when the output-required power of the transmission signals is equal to or greater than a predetermined first threshold value and is less than a predetermined second threshold value; and to amplify the amplification unit at a second amplification level when the output-required power of the transmission signal is equal to or greater than the second threshold value.
18 Citations
10 Claims
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1. An apparatus for controlling gain according to a magnitude change of an output signal in a polar transmitter, the apparatus comprising:
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a signal generating unit configured to receive and modulate a transmission signal, separate the modulated signal into a phase signal and a magnitude signal, generate a pulse signal by using the magnitude signal, and convert the phase signal into a wireless signal; a gain correcting unit configured to extract a transmission gain from magnitude information of a resource block of the transmission signal, provide a gain value to the signal generating unit, and generate an envelope signal for a power amplification by using the pulse signal of the signal generating unit; a power amplifying module configured to receive the envelope signal, and perform a power amplification or a simple amplification according to a selection signal and the envelope signal; and a gain controlling unit configured to determine a magnitude of a signal generated by the signal generating unit by using a power control signal for the transmission signal, determine a gain mode, and output the selection signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for controlling gain according to a magnitude change of an output signal in a polar transmitter including an amplification unit having two or more amplification degrees, the method comprising:
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controlling an output level of a modulated signal when a output-required power of a transmission signal is less than a predetermined threshold value, and performing a basic amplification through the amplification unit; amplifying the amplification unit at a first amplification level when the output-required power of the transmission signal is equal to or greater than a predetermined first threshold value and is less than a predetermined second threshold value; and amplifying the amplification unit at a second amplification level when the output-required power of the transmission signal is equal to or greater than the second threshold value. - View Dependent Claims (10)
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Specification