A 5G fiber remote system and method supporting voice functionality

Abstract

The application relates to a 5G optical fiber remote system and method supporting a voice function. The system comprises: a near-end unit comprising a diplexer 1, a low-noise amplifier 1, a frequency downconverter 1, an AD analog-digital converter 1, a power amplifier 1, a frequency upconverter 1, a DA digital-analog converter 1, a single-chip microcomputer MCU1, a voice processing module, a diplexer 2, a low-noise amplifier 2, a frequency downconverter 2, an AD analog-digital converter 2, a power amplifier 2, a frequency upconverter 2, a DA digital-analog converter 2, a digital signal processor FPGA1 and an optical module 1; and a far-end unit comprising a diplexer 3, a low-noise amplifier 3, a frequency downconverter 3, an AD analog-digital converter 3, a power amplifier 3, a frequency upconverter 3, a DA digital-analog converter 3, a single-chip microcomputer MCU2, a diplexer 4, a low-noise amplifier 4, a frequency downconverter 4, an AD analog-digital converter 4, a power amplifier 4, a frequency upconverter 4, a DA digital-analog converter 4, a digital signal processor FPGA2 and an optical module 2. The application can modify and set and output main parameters according to voice.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wireless communication, in particular to a 5G optical fiber remote system and method supporting voice function. BACKGROUND

[0002] 5G digital optical fiber repeater system is widely used in mobile communication system as an auxiliary means of base station coverage due to its low construction cost, simple installation, flexible networking and other advantages, to solve the problem of blind area or weak area that general base station is difficult to cover, and to improve network quality. For example, 5G digital optical fiber repeater system can be installed on highways, subways, tunnels, parking lots, piers and remote suburbs to increase network coverage and eliminate signal weak areas and blind areas.

[0003] However, the existing 5G digital optical fiber repeater system needs professional personnel to equip corresponding debugging software to carry out commissioning and opening, and it is difficult for construction personnel to carry out commissioning and opening through simple training, and part of the reason is that the communication methods of different suppliers are different, some through serial communication and some through network communication; the biggest problem is that the commissioning software has OMT based on the need to install registration for commissioning, and WEB GUI web version based on the need to install registration for commissioning, and the use of different commissioning software is very different, which puts high requirements on the professional level of the debugging personnel. SUMMARY

[0004] The purpose of the present application is to provide a 5G optical fiber remote system and method supporting voice function, which supports automatic identification of voice signals, and outputs the main parameters of the near-end unit and the far-end unit through the loudspeaker after identification processing, and can modify and set the main parameters according to the actual situation on site, overcoming the need for professional personnel to equip corresponding debugging software to carry out commissioning and opening in traditional digital optical fiber repeater system, greatly reducing the engineering opening and maintenance cost.

[0005] To achieve the above purpose, the technical scheme of the present application is: a 5G optical fiber remote system supporting voice function, comprising a near-end unit and a far-end unit, the near-end unit coupling 5G FDD mode signal through air, and connecting the far-end unit through optical fiber to complete signal coverage in the coverage area.

[0006] In an embodiment of the present application,

[0007] The near-end unit comprises a duplexer 1, a low-noise amplifier 1, a down converter 1, an AD analog-to-digital converter 1, a power amplifier 1, an up converter 1, a DA digital-to-analog converter 1, a single-chip microcomputer MCU 1, a voice processing module, a duplexer 2, a low-noise amplifier 2, a down converter 2, an AD analog-to-digital converter 2, a power amplifier 2, an up converter 2, a DA digital-to-analog converter 2, a digital signal processor FPGA 1 and an optical module 1;

[0008] The low noise amplifier 1, the low noise amplifier 2, the down conversion 1, the down conversion 2, the AD analog-digital converter 1, the AD analog-digital converter 2, the digital signal processor FPGA 1, the duplexer 1, and the duplexer 2 constitute a near-end unit 5G downlink;

[0009] The power amplifier 1, the power amplifier 2, the up conversion 1, the up conversion 2, the DA digital-analog converter 1, the DA digital-analog converter 2, the digital signal processor FPGA 1, the duplexer 1, and the duplexer 2 constitute a near-end unit 5G signal uplink;

[0010] The voice processing module, the single-chip microcomputer MCU 1, the digital signal processor FPGA 1, and the optical module 1 constitute a voice processing, signal processing, and transmission link of a near-end unit 5G device.

[0011] The far-end unit comprises a duplexer 3, a low noise amplifier 3, a down conversion 3, an AD analog-digital converter 3, a power amplifier 3, an up conversion 3, a DA digital-analog converter 3, a single-chip microcomputer MCU 2, a duplexer 4, a low noise amplifier 4, a down conversion 4, an AD analog-digital converter 4, a power amplifier 4, an up conversion 4, a DA digital-analog converter 4, a digital signal processor FPGA 2, and an optical module 2.

[0012] The DA digital-analog converter 3, the DA digital-analog converter 4, the up conversion 3, the up conversion 4, the power amplifier 3, the power amplifier 4, the digital signal processor FPGA 2, the duplexer 3, and the duplexer 4 constitute a far-end unit 5G downlink.

[0013] The low noise amplifier 3, the low noise amplifier 4, the down conversion 3, the down conversion 4, the AD analog-digital converter 3, the AD analog-digital converter 4, the digital signal processor FPGA 2, the duplexer 3, and the duplexer 4 constitute a far-end unit 5G uplink.

[0014] The single-chip microcomputer MCU 2, the digital signal processor FPGA 2, and the optical module 2 constitute a signal processing and transmission link of a far-end unit 5G device.

[0015] The near-end unit and the far-end unit communicate through the optical module 1 and the optical module 2 via an optical fiber.

[0016] In an embodiment of the present application, the duplexer 1 and the duplexer 2 have the same working frequency band.

[0017] In an embodiment of the present application, the duplexer 1 and the duplexer 2 communicate with a 5G base station through a receiving antenna.

[0018] In an embodiment of the present application, the duplexer 3 and the duplexer 4 have the same working frequency band.

[0019] In an embodiment of the present application, the duplexers 3 and 4 realize signal transmission coverage of the coverage area through the transmitting antennas.

[0020] In an embodiment of the present application, the voice processing module comprises a microphone, a voice input module, a voice recognition module, a UART interface module, a voice synthesis module, a voice output module, and a loudspeaker.

[0021] The microphone is used to collect sound signals and convert voice signals into electric signals.

[0022] The voice input module is used to process the electric signals including sampling, filtering, and amplification, and convert the electric signals into digital signals.

[0023] The voice recognition module is used to convert the digital signals into words or commands through a voice recognition algorithm, and transmit the words or commands to the single-chip microcomputer MCU1 through the UART interface module for processing.

[0024] The voice synthesis module is used to convert the words or commands into digital signals.

[0025] The voice output module is used to convert the digital signals into electric signals through a voice synthesis algorithm.

[0026] The loudspeaker is used to convert the electric signals into voice signals and output sound signals.

[0027] The present application further provides a 5G optical fiber remote supporting voice function based on the above-mentioned system, and the implementation is as follows:

[0028] The near-end unit receives the 5G FDD downlink signals of the 5G base station through the air coupling mode, and then splits the uplink and downlink signals through the duplexers 1 and 2, and the downlink signals 1 and 2 enter the low-noise amplifiers 1 and 2, respectively, and then enter the down-conversion 1 and 2, respectively, after being amplified by the low-noise amplifiers, and become intermediate frequency signals, which enter the AD analog-digital converters 1 and 2, respectively, and are converted into digital signals, which are processed in the digital signal processor FPGA1; the processed signals are converted into optical signals by the optical module 1 and transmitted to the far-end unit through the optical fiber.

[0029] The optical module 1 converts the optical signal transmitted by the remote unit into an electrical signal in the uplink, and the electrical signal enters the digital signal processor FPGA1 to be converted into 5G FDD uplink signal 1 and uplink signal 2, which respectively enter the DA digital-to-analog converter 1 and the DA digital-to-analog converter 2 to be converted into analog signals, and the analog signals are converted into radio frequency signals by the up-conversion 1 and the up-conversion 2, and the radio frequency signals enter the power amplifier 1 and the power amplifier 2 for power amplification, and then enter the duplexer 1 and the duplexer 2, and the uplink and downlink signals are split by the duplexer 1 and the duplexer 2, and then are transmitted back to the 5G base station through the receiving antenna.

[0030] The voice processing module of the near-end unit converts the collected sound signal into an electrical signal through the microphone, and processes the electrical signal by including sampling, filtering, and amplification to convert the electrical signal into a digital signal, and then converts the digital signal into text or commands by using a voice recognition algorithm, and transmits the text or commands to the single-chip microcomputer MCU1 for processing to realize modification and setting of main parameters of the near-end unit and the remote unit.

[0031] The optical module 2 converts the optical signal transmitted by the near-end unit into an electrical signal in the downlink, and the electrical signal enters the digital signal processor FPGA2, and the processed 5G FDD downlink signal 1 and downlink signal 2 respectively enter the DA analog-to-digital converter 3 and the DA analog-to-digital converter 4 to be converted into analog signals, and the analog signals are converted into radio frequency signals by the up-conversion 3 and the up-conversion 4, and the radio frequency signals enter the power amplifier 3 and the power amplifier 4 for power amplification, and then enter the duplexer 3 and the duplexer 4, and the uplink and downlink signals are split by the duplexer 3 and the duplexer 4, and then complete signal coverage of the coverage area through the transmitting antenna.

[0032] The transmitting antenna of the remote unit receives the 5G FDD uplink signal of the 5G terminal in the uplink by using the air coupling mode, and then the uplink and downlink signals are split by the duplexer 3 and the duplexer 4, and the uplink signals enter the low-noise amplifier 3 and the low-noise amplifier 4 for amplification, and then enter the down-conversion 3 and the down-conversion 4 to be converted into intermediate frequency signals, and the intermediate frequency signals enter the AD analog-to-digital converter 3 and the AD analog-to-digital converter 4 to be converted into digital signals, and the digital signals enter the digital signal processor FPGA2 for processing; and the processed signals are converted into optical signals by the optical module 2, and the optical signals are transmitted to the near-end unit through the optical fiber.

[0033] Compared with the prior art, the present application has the following beneficial effects: the present application supports automatic identification of voice signals, and after identification processing of the main parameters of the near-end unit and the far-end unit, the main parameters are output through a loudspeaker, and the main parameters can be modified and set according to the actual situation on site by voice, which overcomes the problem that the traditional digital optical fiber repeater system needs to be equipped with corresponding debugging software by professional personnel to perform commissioning and opening, and greatly reduces the engineering opening and maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is the principle diagram of the system of the present application.

[0035] Figure 2 is the principle diagram of the near-end unit and the far-end unit of the present application.

[0036] Figure 3 is the principle diagram of the voice processing module of the present application. DETAILED DESCRIPTION

[0037] The technical solutions of the present application will be specifically described below with reference to the drawings.

[0038] Referring to Figure 1 , the present application provides a 5G optical fiber remote system supporting voice function, which comprises a near-end unit and a far-end unit, the near-end unit couples 5G FDD mode signals of a 5G base station through the air, and then connects the far-end unit through an optical fiber to complete signal coverage of a coverage area;

[0039] In the embodiment, referring to Figure 2 , the near-end unit comprises a duplexer 1, a low-noise amplifier 1, a down converter 1, an AD analog-to-digital converter 1, a power amplifier 1, an up converter 1, a DA digital-to-analog converter 1, a single-chip microcomputer MCU1, a voice processing module, a duplexer 2, a low-noise amplifier 2, a down converter 2, an AD analog-to-digital converter 2, a power amplifier 2, an up converter 2, a DA digital-to-analog converter 2, a digital signal processor FPGA1 and an optical module 1;

[0040] The low-noise amplifier 1, the low-noise amplifier 2, the down converter 1, the down converter 2, the AD analog-to-digital converter 1, the AD analog-to-digital converter 2, the digital signal processor FPGA1, the duplexer 1 and the duplexer 2 constitute a 5G downlink of the near-end unit;

[0041] The power amplifier 1, the power amplifier 2, the up converter 1, the up converter 2, the DA digital-to-analog converter 1, the DA digital-to-analog converter 2, the digital signal processor FPGA1, the duplexer 1 and the duplexer 2 constitute a 5G uplink of the near-end unit;

[0042] The voice processing module, the single-chip microcomputer MCU1, the digital signal processor FPGA1 and the optical module 1 form a link for voice processing, signal processing and transmission of the near-end unit 5G device;

[0043] In the embodiment, referring to Figure 2 , the far-end unit comprises a duplexer 3, a low-noise amplifier 3, a down-conversion 3, an AD analog-digital converter 3, a power amplifier 3, an up-conversion 3, a DA digital-analog converter 3, a single-chip microcomputer MCU2, a duplexer 4, a low-noise amplifier 4, a down-conversion 4, an AD analog-digital converter 4, a power amplifier 4, an up-conversion 4, a DA digital-analog converter 4, a digital signal processor FPGA2 and an optical module 2;

[0044] The DA digital-analog converter 3, the DA digital-analog converter 4, the up-conversion 3, the up-conversion 4, the power amplifier 3, the power amplifier 4, the digital signal processor FPGA2, the duplexer 3 and the duplexer 4 form a far-end unit 5G downlink;

[0045] The low-noise amplifier 3, the low-noise amplifier 4, the down-conversion 3, the down-conversion 4, the AD analog-digital converter 3, the AD analog-digital converter 4, the digital signal processor FPGA2, the duplexer 3 and the duplexer 4 form a far-end unit 5G uplink;

[0046] The single-chip microcomputer MCU2, the digital signal processor FPGA2 and the optical module 2 form a link for signal processing and transmission of the far-end unit 5G device;

[0047] The near-end unit and the far-end unit communicate through the optical module 1 and the optical module 2 via an optical fiber.

[0048] In the embodiment, referring to Figure 3 , the voice processing module comprises a microphone, a voice input module, a voice recognition module, a UART interface module, a voice synthesis module, a voice output module and a loudspeaker;

[0049] The microphone is used for collecting sound signals and converting voice signals into electric signals;

[0050] The voice input module is used for processing electric signals including sampling, filtering and amplification, and converting the electric signals into digital signals;

[0051] The voice recognition module is used for converting digital signals into texts or commands through a voice recognition algorithm, and transmitting the texts or commands to the single-chip microcomputer MCU1 through the UART interface module for processing;

[0052] The voice synthesis module is used for converting texts or commands into digital signals;

[0053] The voice output module is used for converting digital signals into electric signals through a voice synthesis algorithm;

[0054] The loudspeaker converts the electrical signal into a voice signal for outputting a sound signal.

[0055] With reference to Figures 1-3 The application also provides a 5G optical fiber remote voice function supporting method based on the above-mentioned system, which is implemented as follows:

[0056] The receiving antenna of the near-end unit receives the 5G FDD downlink signal of the 5G base station in an air coupling mode, and then the uplink and downlink signals are split through the duplexers 1 and 2, and the downlink signal 1 and the downlink signal 2 enter the low-noise amplifiers 1 and 2 respectively, are amplified by the low-noise amplifiers, and then enter the down-conversion 1 and the down-conversion 2 respectively, become intermediate frequency signals, enter the AD analog-to-digital converters 1 and 2 respectively, are converted into digital signals, and then enter the digital signal processor FPGA1 for processing; the processed signals are converted into optical signals by the optical module 1, are transmitted to the far-end unit through the optical fiber, and the far-end unit receives the optical signals through the optical module 2, converts the optical signals into electrical signals, and then enters the digital signal processor FPGA2 for processing.

[0057] The optical module 1 of the near-end unit converts the optical signals transmitted by the far-end unit into electrical signals in the uplink, and then the electrical signals enter the digital signal processor FPGA1 and are converted into the 5G FDD uplink signal 1 and the uplink signal 2, and then the 5G FDD uplink signal 1 and the uplink signal 2 enter the DA digital-to-analog converter 1 and the DA digital-to-analog converter 2 respectively, are converted into analog signals, are converted into radio frequency signals through the up-conversion 1 and the up-conversion 2, enter the power amplifiers 1 and 2 respectively, are amplified in power, enter the duplexers 1 and 2, are split through the duplexers 1 and 2, and then are transmitted back to the 5G base station through the receiving antenna.

[0058] The voice processing module of the near-end unit converts the collected sound signals into electrical signals through the microphone, and then the electrical signals are processed including sampling, filtering and amplification, and are converted into digital signals, and then the digital signals are converted into words or commands through the voice recognition algorithm, and are transmitted to the single-chip microcomputer MCU1 for processing, so that the main parameters of the near-end unit and the far-end unit are modified and set; the single-chip microcomputer MCU1 converts the processed words or commands into digital signals, converts the digital signals into electrical signals through the voice synthesis algorithm, and then the electrical signals are output through the loudspeaker to output the main parameters of the near-end unit and the far-end unit after modification and setting;

[0059] The remote unit converts the optical signal transmitted by the near-end unit into an electrical signal in the downlink optical module 2 into the digital signal processor FPGA 2, and the processed 5G FDD downlink signal 1 and downlink signal 2 enter the DA analog-digital converter 3 and DA analog-digital converter 4 respectively to be converted into analog signals, and the analog signals are up-converted by the up-conversion 3 and up-conversion 4 to become radio frequency signals which enter the power amplifier 3 and power amplifier 4 respectively for power amplification, and then enter the duplexer 3 and duplexer 4, and the uplink and downlink signals are split by the duplexer 3 and duplexer 4, and then the signal coverage of the coverage area is completed by the transmitting antenna.

[0060] The transmitting antenna of the remote unit receives the 5G FDD uplink signal of the 5G terminal in the uplink by the air coupling mode, and then the uplink and downlink signals are split by the duplexer 3 and duplexer 4, and the uplink signal enters the low-noise amplifier 3 and low-noise amplifier 4 respectively, and then the uplink signal is amplified by the low-noise amplifier and enters the down-conversion 3 and down-conversion 4 respectively to become intermediate frequency signals which enter the AD analog-digital converter 3 and AD analog-digital converter 4 respectively to be converted into digital signals which enter the digital signal processor FPGA 2 for processing; and the processed signal is converted into an optical signal by the optical module 2 and transmitted to the near-end unit through an optical fiber.

[0061] The above is the preferred embodiment of the present application, and any change made according to the technical solution of the present application, as long as the function of the change does not exceed the scope of the technical solution of the present application, belongs to the protection scope of the present application.

Claims

1. A 5G fiber remote system supporting voice functions, characterized in that, Including a near-end unit and a far-end unit, the near-end unit is coupled with 5G FDD signal through air, and then connects the far-end unit through optical fiber to complete signal coverage of the coverage area; the near-end unit comprises a duplexer 1, a low-noise amplifier 1, a frequency down-converter 1, an AD analog-digital converter 1, a power amplifier 1, a frequency up-converter 1, a DA digital-analog converter 1, a single-chip microcomputer MCU1, a voice processing module, a duplexer 2, a low-noise amplifier 2, a frequency down-converter 2, an AD analog-digital converter 2, a power amplifier 2, a frequency up-converter 2, a DA digital-analog converter 2, a digital signal processor FPGA1 and an optical module 1; The low-noise amplifier 1, the low-noise amplifier 2, the frequency down-converter 1, the frequency down-converter 2, the AD analog-digital converter 1, the AD analog-digital converter 2, the digital signal processor FPGA1, the duplexer 1 and the duplexer 2 constitute a 5G downlink of the near-end unit; The power amplifier 1, the power amplifier 2, the frequency up-converter 1, the frequency up-converter 2, the DA digital-analog converter 1, the DA digital-analog converter 2, the digital signal processor FPGA1, the duplexer 1 and the duplexer 2 constitute a 5G uplink of the near-end unit; The voice processing module, the single-chip microcomputer MCU1, the digital signal processor FPGA1 and the optical module 1 constitute a link for voice processing, signal processing and transmission of the 5G equipment of the near-end unit; The far-end unit comprises a duplexer 3, a low-noise amplifier 3, a frequency down-converter 3, an AD analog-digital converter 3, a power amplifier 3, a frequency up-converter 3, a DA digital-analog converter 3, a single-chip microcomputer MCU2, a duplexer 4, a low-noise amplifier 4, a frequency down-converter 4, an AD analog-digital converter 4, a power amplifier 4, a frequency up-converter 4, a DA digital-analog converter 4, a digital signal processor FPGA2 and an optical module 2; The DA digital-analog converter 3, the DA digital-analog converter 4, the frequency up-converter 3, the frequency up-converter 4, the power amplifier 3, the power amplifier 4, the digital signal processor FPGA2, the duplexer 3 and the duplexer 4 constitute a 5G downlink of the far-end unit; The low-noise amplifier 3, the low-noise amplifier 4, the frequency down-converter 3, the frequency down-converter 4, the AD analog-digital converter 3, the AD analog-digital converter 4, the digital signal processor FPGA2, the duplexer 3 and the duplexer 4 constitute a 5G uplink of the far-end unit; The single-chip microcomputer MCU2, the digital signal processor FPGA2 and the optical module 2 constitute a link for signal processing and transmission of the 5G equipment of the far-end unit; The near-end unit and the far-end unit communicate through the optical module 1 and the optical module 2 through optical fiber; The working frequency bands of the duplexer 1 and the duplexer 2 are the same; The voice processing module comprises a microphone, a voice input module, a voice recognition module, a UART interface module, a voice synthesis module, a voice output module and a loudspeaker; The microphone is used for collecting sound signals and converting voice signals into electric signals; The voice input module is used for processing electric signals including sampling, filtering and amplifying to convert electric signals into digital signals; The voice recognition module is used for converting digital signals into words or commands through a voice recognition algorithm and transmitting the words or commands to the single-chip microcomputer MCU1 through the UART interface module for processing; The voice synthesis module is used for converting the text or command into a digital signal; The voice output module converts the digital signal into an electric signal through a voice synthesis algorithm; The loudspeaker converts the electric signal into a voice signal for outputting a sound signal. 2.The 5G fiber remote system supporting voice function of claim 1, wherein, The duplexers 1 and 2 communicate with the 5G base station through the receiving antenna. 3.The 5G fiber remote system supporting voice function of claim 1, wherein, The duplexers 3 and 4 have the same working frequency band.

4. The 5G fiber remote system with voice support of claim 1, wherein, The duplexers 3 and 4 realize signal transmission coverage of the coverage area through the transmitting antenna. 5.A 5G fiber remote method supporting voice function based on the system of any one of claims 1-4, characterized in that, The implementation is as follows: In the downlink, the near-end unit receives the 5G FDD downlink signal of the 5G base station through the air coupling of the receiving antenna, and then splits the uplink and downlink signals through the duplexers 1 and 2, and the downlink signal 1 and the downlink signal 2 enter the low-noise amplifiers 1 and 2 respectively, are amplified by the low-noise amplifiers, and then enter the down-conversion 1 and the down-conversion 2 respectively to become intermediate frequency signals which enter the AD analog-digital converters 1 and 2 respectively to be converted into digital signals which are processed in the digital signal processor FPGA1; the processed signals are converted into optical signals by the optical module 1 and transmitted to the far-end unit through the optical fiber; In the uplink, the optical module 1 converts the optical signal transmitted by the far-end unit into an electric signal which enters the digital signal processor FPGA1 to be converted into the 5G FDD uplink signal 1 and the uplink signal 2, and the 5G FDD uplink signal 1 and the uplink signal 2 enter the DA digital-analog converter 1 and the DA digital-analog converter 2 respectively to be converted into analog signals which are converted into radio frequency signals by the up-conversion 1 and the up-conversion 2, and then enter the power amplifiers 1 and 2 for power amplification, and then enter the duplexers 1 and 2, and the uplink and downlink signals are split by the duplexers 1 and 2 and then transmitted back to the 5G base station through the receiving antenna; The voice processing module of the near-end unit converts the collected sound signal into an electric signal through the microphone, and processes the electric signal including sampling, filtering and amplification to convert it into a digital signal, and then converts the digital signal into text or command through a voice recognition algorithm, and transmits the text or command to the single-chip microcomputer MCU1 for processing to realize the modification and setting of the main parameters of the near-end unit and the far-end unit; the single-chip microcomputer MCU1 converts the processed text or command into a digital signal, converts the digital signal into an electric signal through a voice synthesis algorithm, and outputs a sound signal through the loudspeaker to realize the output of the main parameters of the near-end unit and the far-end unit after the modification and setting; In the downlink, the optical module 2 converts the optical signal transmitted by the near-end unit into an electric signal which enters the digital signal processor FPGA2, and the processed 5G FDD downlink signal 1 and the downlink signal 2 enter the DA digital-analog converter 3 and the DA digital-analog converter 4 respectively to be converted into analog signals which are converted into radio frequency signals by the up-conversion 3 and the up-conversion 4, and then enter the power amplifiers 3 and 4 for power amplification, and then enter the duplexers 3 and 4, and the uplink and downlink signals are split by the duplexers 3 and 4 and then complete the signal coverage of the coverage area through the transmitting antenna; The remote unit receives the 5G FDD uplink signal of the 5G terminal by air coupling through the uplink transmitting antenna, and separates the uplink and downlink signals through the diplexer 3 and the diplexer 4. The uplink signal enters the low-noise amplifier 3 and the low-noise amplifier 4, is amplified by the low-noise amplifier, and then enters the down-conversion 3 and the down-conversion 4, respectively, to become intermediate frequency signals, which enter the AD analog-to-digital converter 3 and the AD analog-to-digital converter 4 to be converted into digital signals, and then enter the digital signal processor FPGA 2 for processing. The processed signals are converted into optical signals by the optical module 2, transmitted to the near-end unit through the optical fiber, and then transmitted to the near-end unit.

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