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Communication method between remote unit and power amplifier in digital multipoint distribution system

A technology for power amplifiers and remote units, applied in digital transmission systems, power management, transmission systems, etc., can solve the problems of high requirements for interference suppression, achieve good anti-noise interference, facilitate expansion, and reduce the difficulty of design.

Inactive Publication Date: 2017-11-07
TONGJI UNIV
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Problems solved by technology

These methods can only be used as auxiliary methods if the requirements for interference suppression are high

Method used

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  • Communication method between remote unit and power amplifier in digital multipoint distribution system
  • Communication method between remote unit and power amplifier in digital multipoint distribution system
  • Communication method between remote unit and power amplifier in digital multipoint distribution system

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Embodiment Construction

[0042] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0043] A communication method between a remote unit of a digital multipoint distribution system and a power amplifier, such as figure 1 As shown, the digital multipoint distribution system includes sequentially connected source access unit MAU, extension unit EU, remote unit RU and radio frequency power amplification module PA to realize indoor coverage of mobile communications, and the source access unit MAU There are multiple base stations connected, including GSM base stations, WCDMA base stations, LTE MIMO base stations, etc. Such as figure 2 As shown, the communication method ...

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Abstract

The invention relates to a communication method between a remote unit and power amplifier of a digital multipoint distribution system. The digital multipoint distribution system comprises a signal source access unit, an expansion unit, the remote unit and a radio-frequency power amplifier module. The specific communication method is characterized by enabling the remote unit and the radio-frequency power amplifier module to be isolated through a cavity; connecting a first RS-485 module to the remote unit; connecting a second RS-485 module to the radio-frequency power amplifier module, wherein the first RS-485 module and the second RS-485 module are connected through an RS-485 bus; and carrying out communication interaction between the remote unit and the radio-frequency power amplifier module in the form of data package through the RS-485 bus. Compared with the prior art, the method not only solve the problem of high-frequency radiation interference between a digiboard and a radio frequency board, but also realizes effective monitoring of each parameter of the power amplifier, thereby facilitating expansion of monitoring items and improving system reliability.

Description

technical field [0001] The invention relates to a digital multipoint distribution system, in particular to a communication method between a remote unit and a power amplifier of the digital multipoint distribution system. Background technique [0002] With the vigorous development of modern digital mobile communication technology, users have higher and higher requirements on the performance of wireless communication equipment. To achieve stable and high-speed data transmission in various environments is one of the main goals of mobile communication system researchers. In the digital multipoint distribution system, the RF power amplifier is the final stage of the transmitter, which amplifies the modulated frequency band signal to the required power to ensure that the receiver in the coverage area can receive a satisfactory signal level, but The communication of the adjacent channel should not be interfered too much, and at the same time, the amplified high-power signal should ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L1/00H04W52/00
CPCH04L43/08Y02D30/70
Inventor 赵霞王业通
Owner TONGJI UNIV
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