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System and method for estimating power

A power and digital power technology, applied in the field of mobile communication systems, can solve problems such as chip failure, high cost of driving chips, and chip power dissipation

Inactive Publication Date: 2005-10-19
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the chip dissipates only so much power, a chip with too many logic gates will also generate too much heat, causing the chip to fail
In addition, the greater the power required to drive the chip, the higher the cost of the drive chip

Method used

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Examples

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Embodiment Construction

[0026] The present invention is a system and method for estimating the power of a signal represented, for example, by a voltage or current value as a function of time. The instantaneous power of the signal can be determined by the square of the quantized representation of the signal. This is because power is proportional to the square of the voltage. The average power over time can be determined from these instantaneous power judgments. The signal can be squared with a digital squaring circuit. The output of the squaring circuit can be averaged with a low pass filter.

[0027] When implemented in digital techniques, the output of the squaring circuit requires twice as many bits as the input if there is no loss of precision. This output, representing the instantaneous power, is fed into a low-pass filter to average it over time. Depending on the number of bits used to represent the input signal, a squaring circuit would be prohibitively large in terms of logic gates and con...

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PUM

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Abstract

The present invention relates to a system and method for estimating the power of a signal. The signal is compared to and separated into a plurality of ranges. Each range is assigned a particular output value. The output values approximate the square of the input signal based on known characteristics of the input signal. A low pass filter is used to average a plurality of the output values.

Description

technical field [0001] The present invention generally relates to mobile communication systems. In particular, the present invention relates to a system and method for estimating the power of communication signals or groups of signals forming sub-beams. The invention is most commonly used in mobile communication systems using satellites, where satellite power tracking is important. Background technique [0002] Satellite communication systems are a means of transmitting information over great distances. A typical satellite communication system uses a base station called a gateway, and one or more satellites relay communication signals between the gateway and one or more user terminals. A gateway provides a communication link from one user terminal to another user terminal or other connected users in a communication system such as the public switched telephone network. User terminals can be fixed or mobile, such as mobile phones, and located anywhere that can communicate w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04B7/185H04B17/00
CPCH04B7/18543H04B17/0045H04B17/327H04B7/185
Inventor S·莫伦科普夫
Owner QUALCOMM INC
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