公开(公告)号：US06999523B2

公开(公告)日：2006-02-14

申请号：US09887481

申请日：2001-06-22

Applicant: Harri Posti

Inventor： Harri Posti

IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC classification number: H04L27/368 ,  H03F1/3247 ,  H03F1/3282 ,  H03F2201/3206 ,  H03F2201/3233 ,  H04B1/04 ,  H04B1/62

Abstract: A multi frequency carrier transmitter comprises input means for receiving a plurality of different digital signals to be transmitted. The different signals are to be transmitted on different carrier frequencies. Amplifier means receive a composite signal comprising the different signals at the respective carrier frequencies and amplify the composite signal. Predistortion means predistort the plurality of digital signals prior to amplification of the composite signal by the amplification means. The predistortion provided by the predistortion means is subsequently altered in dependence on the difference between the input signals and the output at the amplifier means.

公开(公告)号：US20010014592A1

公开(公告)日：2001-08-16

申请号：US09112269

申请日：1998-07-08

Inventor： JOCHEN HELMS

IPC: H04B001/02

CPC classification number: H03F1/3247 ,  H03F2200/57 ,  H03F2201/3206 ,  H03F2201/3233

Abstract: A transmitter for a plurality of carriers of a broad-band transmitting spectrum which contains a broad-band power amplifier encompassing the carriers for amplifying an input signal into a more powerful output signal, wherein a measuring signal is formed from the output signal with the aid of a decoupler. The transmitter further contains an adaptation unit for comparing the input signals to the measuring signals and for thereafter forming a correction signal. A predistortion of the input signal is performed in a predistortion unit in the transmitter corresponding to the setpoint selections of the correction signal.

Abstract translation: 一种用于宽带发射频谱的多个载波的发射机，其包含宽带功率放大器，其包括用于将输入信号放大为更强大的输出信号的载波，其中，借助于输出信号形成测量信号 的解耦器。 发射机还包括用于将输入信号与测量信号进行比较并用于之后形成校正信号的适配单元。 输入信号的预失真在对应于校正信号的设定点选择的发射机中的预失真单元中执行。