Patent
System, method and computer program product for controlling a transmit signal using an expected power level
Robert Wright Boesel,Levent Aydin,Lindsay A. Weaver +2 more
- 29 Apr 1998
53
TL;DR: In this paper, a system, method and computer program product that uses an expected output power level to compensate for slowly changing unintentional power fluctuations in a signal transmission system such that the actual transmitted power matches a calculated desired transmit power.
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Abstract: A system, method and computer program product that uses an expected output power level to compensate for slowly changing unintentional power fluctuations in a signal transmission system such that the actual transmitted power matches a calculated desired transmit power. Digital expected power data is sampled and filtered to generate an expected output power level. Actual output data is sampled and filtered to generate an actual output power level. A comparator periodically compares the expected output power level to the actual output power level. Preferably, the comparator first removes a correction value from the actual output power level that was added to the transmit signal to correct for unintentional power fluctuations. The resultant ratio or difference is sent to a correction module which generates a correction value therefrom. The correction value is converted to a dB quantity and added to existing correction values.
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Citations
Patent
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Brian Eidson,Mats Lindstrom,Robert Edmund Grange +2 more
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TL;DR: A highly efficient radio frequency (RF) transmitter provides both wide bandwidth and an extended power control range as mentioned in this paper, which is useful in wireless communications to increase both handset talk time and battery life.
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Jiangxin Chen,Arthur J. Neufeld,Serguei A. Glazko,Messay Amerga +3 more
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75
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George Rodney Nelson,John E. Hoffmann,James A. Proctor,Antoine J. Rouphael +3 more
- 18 Aug 2014
TL;DR: In this article, the authors discuss the data rate and resource allocation decisions which are made for a communications channel, such as a wireless reverse connection, where one of the stations is a base station and another station may be a field unit.
62
Patent
Method and system for transmitter output power compensation
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- 30 Nov 2004
TL;DR: In this paper, a digital-to-analog converter may be adjusted by utilizing the feedback temperature compensation value, which may correspond to the sampled temperature, from a lookup table or an algorithm.
55
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Transmitter gain stabilizing apparatus
Ryoichi Minowa
- 07 Nov 2000
TL;DR: In this article, a transmitter gain stabilization scheme using feedback control is proposed to stabilize the gain of a radio base-station transmitter in a CDMA mobile communication system, which includes a reference-power generating unit for generating average power of a baseband signal as reference power, a detector for detecting transmission power, and a gain adjustment unit for adjusting the gain in the radio unit in such a manner that the detected power will coincide with the reference power.
37
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Patent
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Lindsay A. Weaver,Robert Wright Boesel +1 more
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TL;DR: In this paper, the authors present an apparatus and method for controlling the final transmit power of a base station in a cellular communications system that has several channels, where the base station has a transmit power tracking gain and a radio frequency transmit power, w.
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Patent
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Fatih M. Ozluturk
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TL;DR: In this article, a system which dynamically adjusts the power of signals transmitted from a wireless base station over global channels to minimize spillover to other communication cells monitors the total transmit power of the base station.
51
Patent
Automatic power control apparatus
Shyuitsu Tsutsumi,Tatsuya Yamada +1 more
- 25 Jul 1991
TL;DR: In this article, an automatic power control apparatus for use in a radio communication system employing a Time Division Multiplexing Access (TDMA) system according to the present invention has a level varying unit for amplifying a modulated wave.
38
Patent
Transmitting power control method and apparatus
Mimura Yukie
- 15 Jan 1997
TL;DR: In this article, the transmission power of a base station is compared with a predetermined value in a comparator, and a priority for disconnection of the channel may be discriminated depending upon a characteristic of the mobile station.
36
Patent
Transmission power control apparatus
Kazuhiro Ichiyanagi,Kazuyoshi Nagai +1 more
- 10 Oct 1996
TL;DR: In this article, a transmission power control apparatus in a communication apparatus which synthesizes IF signals output from a plurality of channel units and emits the synthesized signal from an antenna is described.
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