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Method for determining different carrier gains, radio transmitter and radio transmitter module

A technology of wireless transmitting device and carrier, applied in transmission control/equalization, signal channel and other directions, which can solve the problems of occupying space, complex structure, and expensive power control.

Inactive Publication Date: 2007-08-29
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, power control becomes quite expensive and space-consuming
Also, if a frequency hopping transmitter is used, e.g. like in GSM, the channelizer also has to adapt to the frequency hopping, which makes the construction more complex

Method used

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  • Method for determining different carrier gains, radio transmitter and radio transmitter module
  • Method for determining different carrier gains, radio transmitter and radio transmitter module
  • Method for determining different carrier gains, radio transmitter and radio transmitter module

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Embodiment Construction

[0066] Figures 1 and 2 have been described with respect to the background of the present invention.

[0067] Figures 3 and 4 respectively show block diagrams of different embodiments of multi-carrier base station transmitters capable of conveniently implementing the first aspect of the present invention.

[0068] FIG. 3 is a multi-carrier base station transmitter based on RF IQ modulation similar to the conventional base station transmitter shown in FIG. 1 . It also comprises a baseband modulator 1 connected to a variable gain radio frequency amplifier 7 via two digital to analog converters 3, 4 and an RF modulator 5 for each of the N carriers. Each baseband modulator 1 is also connected to baseband power detection means 2 and each RF modulator 5 is connected to a local oscillator (LO) 6 . However, referring to FIG. 1 , the output of each RF amplifier 7 is not connected to a dedicated SCPA but is connected to a single multi-carrier power amplifier (MCPA) 15 through a summing ...

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Abstract

This invention refers to a method for determining single RF gain of multicarrier transmitter , a radio transmitter in radio communication system, which is characteristic of mathematically determining the gain (G1-GN) and relative total output power from different group power (REF1-REFN) in some points of each single channel carrier unit, or determining the power relation between different carrier before carrier combining to single multicarrier signal, said relation determines the RF gain for different carrier. Said invention also refers to relative radio transmitter and module for the same.

Description

[0001] This application is a divisional application of an invention patent application with the application number 01811311.7, the application date being April 17, 2001, and the "invention title" being "method for determining different carrier gains, wireless transmitting device and wireless transmitting device module". technical field [0002] The invention relates to a method for determining individual radio frequency gains for different carriers in a multi-carrier transmitter of a wireless transmitting device of a wireless communication system, the multi-carrier transmitter comprising means for modulating at least two different carriers with a modulating signal, calculating the output of the modulating means means for summing the signals, and a multi-carrier power amplifier for amplifying the total signal for transmission. The invention also relates to a wireless transmitting device, a module of such a wireless transmitting device and a wireless communication system comprisi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/06H04B7/005
Inventor 安德烈·德克尔
Owner NOKIA CORP