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Improving power efficiency of a line driver

A technology of line drivers and capacitors, which is applied in the direction of subscriber line interface circuits, transmission path separation devices, transmission line coupling devices, etc., and can solve problems such as power consumption

Active Publication Date: 2011-11-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, line drivers consume most of the power used in DSL systems

Method used

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  • Improving power efficiency of a line driver
  • Improving power efficiency of a line driver
  • Improving power efficiency of a line driver

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Embodiment Construction

[0018] It should be understood from the outset that although the following provides example implementations of one or more embodiments, the disclosed systems and / or methods may be implemented using any number of techniques, whether currently known or in existence. The patent application is in no way limited to the illustrative embodiments, drawings, and techniques described below, but includes the exemplary designs and embodiments illustrated and described herein, with appropriate modifications within the scope and equivalents of the appended claims.

[0019] The amplitude of the transmitted DSL signal may have a relatively high peak-to-average ratio, for example, using discrete multi-frequency (DMT) modulation techniques or orthogonal frequency division multiplexing (OFDM) modulation techniques, where signal peaks may be at relatively high and relatively Low to peak variation. In addition, high signal peaks may occur less frequently than low signal peaks during the entire tra...

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Abstract

An apparatus comprises a first line driver, a second line driver, a charge pump, and a control logic circuit coupled to the first line driver and the second line driver and configured to disable the charge pump when both a first control signal associated with the first line driver and a second control signal associated with the second line driver indicate a charge pump disable state. A network component comprises at least one processor configured to implement a method comprising receiving a first control signal and a second control signal, disabling a charge pump when both the first control signal and the second control signal indicate a charge pump disable state, and operating the charge pump to boost a voltage when the first control signal, the second control signal, or both indicate a charge pump active state.

Description

technical field [0001] none Background of the invention [0002] Digital Subscriber Line (DSL) technology is a high-bandwidth and / or high-speed data transmission technology implemented by using twisted-pair wires (eg, unshielded twisted-pair wires). For example, DSL technologies include Asymmetric Digital Subscriber Line (ADSL), Very High Bit Rate Digital Subscriber Line (VDSL), Integrated Services Digital Network (ISDN)-based Digital Subscriber Line (IDSL), and Single Pair High Bit Rate Digital Subscriber Line ( SHDSL). In many DSL communication systems, power amplifiers (sometimes called line drivers) are often used to amplify the output signal before sending it to the transmission medium (eg, twisted pair wire). Line drivers can consume most of the power used by DSL systems. With the development of semiconductor technology, the power consumption of DSL system digital signal processing has been greatly reduced, but the power consumption of the line driver is still high....

Claims

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Application Information

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IPC IPC(8): H04L25/02
CPCH04L25/028H04L27/2626H04L25/0272H04L5/0007H04M3/007
Inventor 肖瑞杰龙国柱赵治磊
Owner HUAWEI TECH CO LTD
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