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Method and apparatus for controlling transmit power in a wireless communications device

A technology of wireless communication equipment and transmission power, which is applied in wireless communication, power management, electrical components, etc., and can solve problems such as signal distortion, increased out-of-band radiation, and constraints

Inactive Publication Date: 2007-09-12
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, clipping the signal can significantly increase out-of-band emissions and cause signal distortion
Out-of-band emissions are also regulated, thus significantly limiting the use of clipping to reduce signal power spikes

Method used

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  • Method and apparatus for controlling transmit power in a wireless communications device
  • Method and apparatus for controlling transmit power in a wireless communications device
  • Method and apparatus for controlling transmit power in a wireless communications device

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Embodiment Construction

[0017] The detailed description given below in conjunction with the accompanying drawings is a description of various embodiments of the present invention, and does not mean that they are the only embodiments for practicing the present invention. The detailed description includes numerous specific details in order to facilitate a comprehensive understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form so as not to overwhelm the main topic.

[0018] In the following detailed description, various power control techniques may be described for a code division multiple access wireless communication device. Although these power control techniques are well suited for this application, it will be apparent to those skilled in the art that these aspects of the invention can be equally appl...

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Abstract

Systems and techniques for wireless communications are disclosed. The systems and techniques include the generation of a signal, the setting of an average transmit power of the signal transmission as a function of a first threshold relating to out-of-band emissions, the clipping of the signal as a function of a second threshold relating to peak transmit power, and the transmission of the signal over a wireless medium.

Description

[0001] Priority claims under 35 U.S.C. §119 [0002] This patent application claims Provisional Application No. 60 / 599,390, filed August 6, 2004, entitled "Method for Clipping peak Transmit Power while Limiting Out-of-Band Emissions in Wireless Communications System," assigned to the assignee of the present invention priority, which is hereby expressly incorporated by reference. technical field [0003] The present invention relates generally to wireless communications, and more particularly to systems and methods for controlling the transmit power of a wireless communications device. Background technique [0004] Wireless communication systems are designed to allow multiple users to share a common communication medium. There are countless multiple access techniques in the art, such as Code Division Multiple Access (CDMA), Time Division Multiple Access, Frequency Division Multiple Access, and many others like them. The multiple access concept is based on the allocation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707H04L27/26H04W52/08H04W52/24H04W52/26H04W52/36
Inventor 希兰·希兰约翰·爱德华·斯米
Owner QUALCOMM INC
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