Non-linear distortion compensation circuit, transmitter device to be employed in the same and mobile communication unit
First Claim
1. A non-linear distortion compensation circuit in a transmission equipment for controlling a transmission power depending upon an external transmission power control information upon transmission of a digital signal, comprising:
- compensation component generating means for generating a compensation component for a non-linear distortion depending upon a transmission power per bit of said digital signal and said external transmission power control information; and
compensating means for compensating said non-linear distortion of the transmission signal by said compensation component, wherein said transmission signal is a time slot type, said external transmission power control information is set for controlling the transmission power per transmission time slot, said address generating means derives said transmission power per bit by addition of an average power value of a transmission time slot at a certain timing and an instantaneous power value per each bit of subsequent transmission time slot.
2 Assignments
0 Petitions
Accused Products
Abstract
A non-linear distortion compensation circuit, a transmission equipment employing the same and a mobile transmission equipment may accurately compensate distortion caused by non-linearity of a transmitter per bit (symbol) even while the base station is performing transmission power control for the transmitter of the mobile station. The non-linear distortion compensation circuit in a transmission equipment controls a transmission power depending upon an external transmission power control information upon transmission of a digital signal. The non-linear compensation circuit has compensation component generating means for generating a compensation component for a non-linear distortion depending upon a transmission power per bit of the digital signal and the transmission power control information, and compensating means for compensating the non-linear distortion of the transmission signal by the compensation component.
-
Citations
24 Claims
-
1. A non-linear distortion compensation circuit in a transmission equipment for controlling a transmission power depending upon an external transmission power control information upon transmission of a digital signal, comprising:
-
compensation component generating means for generating a compensation component for a non-linear distortion depending upon a transmission power per bit of said digital signal and said external transmission power control information; and
compensating means for compensating said non-linear distortion of the transmission signal by said compensation component, wherein said transmission signal is a time slot type, said external transmission power control information is set for controlling the transmission power per transmission time slot, said address generating means derives said transmission power per bit by addition of an average power value of a transmission time slot at a certain timing and an instantaneous power value per each bit of subsequent transmission time slot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A transmission equipment comprising:
-
a transmitter including component which causing nonlinear distortion;
a non-linear distortion compensation circuit in a transmission equipment for controlling a transmission power depending upon an external transmission power control information upon transmission of a digital signal, including compensation component generating means for generating a compensation component for a non-linear distortion depending upon a transmission power per bit of said digital signal and said external transmission power control information, and compensating means for compensating said non-linear distortion of the transmission signal by said compensation component, wherein said transmission signal is a time slot type, said external transmission power control information is set for controlling the transmission power per transmission time slot, said address generating means derives said transmission power per bit by addition of an average power value of a transmission time slot at a certain timing and an instantaneous power value per each bit of subsequent transmission time slot. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A mobile communication equipment comprising:
-
a receiver receiving a signal from a communication counterpart, said signal containing a transmission power control information;
a transmission equipment comprising a transmitter including component which causing non-linear distortion, a non-linear distortion compensation circuit in a transmission equipment for controlling a transmission power depending upon said transmission power control information upon transmission of a digital signal, including compensation component generating means for generating a compensation component for a non-linear distortion depending upon a transmission power per bit of said digital signal and said transmission power control information, and compensating means for compensating said non-linear distortion of the transmission signal by said compensation component, wherein said transmission power control signal is respectively superimposed per time slot of the signal transmitted from the base station. - View Dependent Claims (17, 18, 19, 20, 21)
-
-
22. A mobile communication equipment, comprising:
-
a receiver receiving a signal from a communication counterpart, said signal containing a transmission power control information;
a transmission equipment comprising a transmitter including component which causing non-linear distortion, a non-linear distortion compensation circuit in a transmission equipment for controlling a transmission power depending upon said transmission power control information upon transmission of a digital signal, including compensation component generating means for generating a compensation component for a non-linear distortion depending upon a transmission power per bit of said digital signal and said transmission power control information, and compensating means for compensating said non-linear distortion of the transmission signal by said compensation component, wherein said compensation component generating means comprises storage means for preliminarily storing a compensation data as said compensation component and address generating means for generating an address of said storage means on the basis of the transmission power per bit and said transmission power control information, wherein said address generating means is constructed to generate said address by addition of said transmission power per bit and said transmission power control information, wherein said address generating means derives the transmission power per bit by addition of an instantaneous transmission power and an average value of the transmission power, and wherein said transmission signal is a time slot type, said external transmission power control information is set for controlling the transmission power per transmission time slot, said address generating means derives said transmission power per bit by addition of an average power value of a transmission time slot at a certain timing and an instantaneous power value per each bit of subsequent transmission time slot. - View Dependent Claims (23)
-
-
24. A mobile communication equipment comprising:
-
a receiver configured to receive a signal from a communication counterpart, said signal containing a transmission power control information;
transmission equipment comprising;
a transmitter which includes a component that causes non-linear distortion of a signal-to-be-transmitted;
a non-linear distortion compensation circuit that is configured to control a transmission power of the signal-to-be-transmitted depending upon said transmission power control information upon transmission of a digital signal;
a compensation component generating unit configured to generate a compensation component for the component which causes the non-linear distortion, based upon a transmission power per bit of said digital signal and said transmission power control information; and
a compensating unit configured to compensate said non-linear distortion of said signal-to-be-transmitted based on said compensation component, wherein said transmission signal is a time slot type, said external transmission power control information is set for controlling the transmission power per transmission time slot based on a reception time slot at a certain timing, said address generating means derives said transmission power per bit by addition of an average power value of a transmission time slot at the certain timing and an instantaneous power value per each bit of a subsequent transmission time slot.
-
Specification