Patents by Inventor Takaki Tetsuya

Takaki Tetsuya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Non-linear distortion compensation circuit, transmitter device to be employed in the same and mobile communication unit
    Patent number: 6741867
    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.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: May 25, 2004
    Assignee: NEC Corporation
    Inventor: Takaki Tetsuya