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DPD-based far-end machine and repeater system

A remote machine and repeater technology, applied in the field of repeater systems, can solve the problems of high cost, high energy consumption, low efficiency, etc., and achieve the effects of reducing energy consumption, simple hardware structure and high efficiency

Inactive Publication Date: 2011-01-19
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] For the problems existing in the above-mentioned prior art, the object of the present invention is to provide a kind of DPD-based remote machine and DPD-based repeater system, which can solve the problem of high cost, low efficiency and energy consumption of the existing repeater system. Big problems, reduce energy consumption, meet the demand for energy conservation

Method used

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  • DPD-based far-end machine and repeater system
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  • DPD-based far-end machine and repeater system

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Embodiment Construction

[0017] The solutions of the present invention will be described in detail below with respect to specific examples thereof. Considering that the remote unit of the present invention is usually applied in the repeater system, the following description is based on the repeater system.

[0018] see image 3 As shown, it is a schematic structural view of the repeater system applied by the solution of the present invention, which includes a relay terminal 101 and a remote terminal 102, and the relay terminal 101 and the remote terminal 102 can be interconnected through an optical fiber 103. The basic processing process can be similar to the commonly used repeater system: on the downlink, the relay terminal 101 couples the radio frequency signal of the base station, and performs relevant signal processing to become an optical signal and transmits it to the remote terminal 102 through the optical fiber 103. The remote machine 102 then performs a series of processing operations on the...

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Abstract

The invention discloses a DPD-based far-end machine and a repeater system. The far-end machine comprises a far-end machine digital processing unit connected with a relay end machine, a DPD unit connected with the output end of the far-end machine digital processing unit, an I / Q modulator connected with the output end of the DPD unit, a power amplifier connected with the output end of the I / Q modulator, and a far-end machine first duplexer and a far-end machine first down-conversion unit connected with the output end of the power amplifier respectively, wherein the output end of the far-end machine first down-conversion unit is connected with the DPD unit. According to the scheme of the invention, the hardware structure is simple; the DPD unit, the I / Q modulator, the power amplifier and the far-end machine first down-conversion unit form a closed loop so that the output curve of the final power is infinitely close to a straight line; and the far-end machine has high efficiency and superiorities of energy conservation and emission reduction under the condition of great demand of the current high-power equipment, solves the problems of high cost, low efficiency and high energy consumption of the conventional repeater, reduces the consumption of energy, and meets the requirement of saving the energy.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a DPD-based remote machine and a DPD-based repeater system. Background technique [0002] In order to save energy, various countries have put forward the requirements for energy saving and consumption reduction of electronic products, and there is an urgent demand for energy saving and consumption reduction of mobile communication equipment, which requires us to improve the efficiency of mobile communication equipment to Reduce energy consumption and save energy. In general mobile communication equipment, whether it is an analog remote radio system or a digital remote radio system, either no pre-distortion processing is performed, such as figure 1 As shown, either analog predistortion processing, such as figure 2 As shown, since the analog predistortion generally adopts the feedforward technology, the circuit implementation is complex, and the cancellation abili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08H04B7/155
CPCY02D30/70
Inventor 赵建平詹科麟
Owner COMBA TELECOM SYST CHINA LTD
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