A multi-rate high-speed laser communication device

Abstract

The present invention relates to the field of communication, and discloses a multi-rate high-speed laser communication device, including a GTX uplink receiving module, a digital signal processing module, a GTX downlink sending module, a laser control module, an optical machine module, and a laser communication load control module. The GTX uplink receiving module receives two parallel data channels; the digital signal processing module performs branching, framing, encoding, scrambling, and combining processing on the data; the GTX downlink sending module sends the communication data; the laser control module controls the working parameters of the laser driver chip, and converts the electrical signal into an optical signal; the optical machine module forwards the optical signal; and the laser communication load control module controls the working parameters of other modules, and receives telemetry data from other modules. The present invention designs two parallel GTX data detection and combining functions to ensure the stability and accuracy of the two data channels. The digital signal adopts branching, framing, and combining transmission, which reduces the resource occupation of the FPGA. The device has a fast transmission rate and stable performance.

Description

Technical Field

[0001] The present invention relates to the field of communication, in particular to the field of high-speed laser communication, and specifically to a multi-rate high-speed laser communication device. Background Art

[0002] The traditional laser communication rate is relatively slow, mostly 1.25G and 2.5G, and it is basically uplink data on one path, or two paths of data backing up each other. It does not have two parallel data paths in the true sense, and the link resource utilization rate is not high. In addition, at the same communication rate, the encoding method for communication data is mostly fixed. When the communication link deteriorates, the communication quality decreases. The encoding method cannot change with the change of the communication link status, and the communication quality cannot be guaranteed. A multi-rate high-speed laser communication device supports three speed blocks, two encoding methods of laser communication, and has data detection function, and the overall performance is stable. Summary of the invention

[0003] The purpose of the present invention is to avoid the shortcomings of the above-mentioned background technology and design a multi-rate high-speed laser communication device. The present invention supports laser data transmission in three speed ranges of 1.25G, 5G, and 10G, as well as two coding modes of LDPC coding and RS coding. It designs two parallel GTX data detection and combining functions to ensure the stability and accuracy of the two-way data. The digital signal adopts branching framing and combining transmission, which reduces the resource occupation of FPGA. The device has fast transmission rate and stable performance, and can achieve a maximum transmission rate of 10G.

[0004] The technical solution adopted by the present invention is:

[0005] A multi-rate high-speed laser communication device, comprising a GTX downlink transmission module 3, a laser control module 4, an optical-mechanical module 5 and a laser communication load control module 6; and also comprising a GTX uplink receiving module 1 and a digital signal processing module 2;

[0006] The GTX uplink receiving module 1 is used to receive two parallel data sent by the satellite platform, and perform content detection and combining processing on the data, report the detection result of the data to the laser communication load control module 6, and send the combined data to the digital signal processing module 2;

[0007] The digital signal processing module 2 is used to receive the data transmitted by the GTX uplink receiving module 1, split, frame and encode the data. The encoding method is controlled by the instruction of the laser communication load control module 6, and RS encoding or LDPC encoding is selected. After the encoding is completed, the data is scrambled and combined, and sent to the GTX downlink sending module 3. At the same time, the framing state, encoding state and amount of data sent are reported to the laser communication load control module 6;

[0008] The GTX downlink sending module 3 is used to receive the rate instruction from the laser communication load control module 6, including three rate levels of 1.25G rate, 5G rate and 10G rate, and receive the communication data from the digital signal processing module 2, convert the communication data into the data format required by GTX, and send it to the laser control module 4 at the specified rate level, and send the working status to the laser communication load control module 6;

[0009] The laser control module 4 is used to receive the remote control data sent by the laser communication load control module 6, control the working parameters of the laser driver chip, and convert the GTX data sent by the GTX downlink sending module 3 into an optical signal with an electrical signal, and send it to the optical machine module 5, and at the same time send the working status of the laser to the laser communication load control module 6;

[0010] The optical-mechanical module 5 is used to receive the optical signal sent by the laser control module 4 and forward it;

[0011] The laser communication payload control module 6 is used to control the working parameters and working status of the laser control module 4 by sending remote control data, and send instructions to the digital signal processing module 2 and the GTX downlink sending module 3. At the same time, it collects the telemetry data reported by other modules and sends it to the satellite platform for real-time monitoring.

[0012] Furthermore, the GTX uplink receiving module 1 includes a GTX receiving module 1-1, a GTX data detection module 1-2 and a GTX data combining module 1-3;

[0013] The GTX receiving module 1-1 is used to receive two parallel data sent by the satellite platform. After being processed by the GTX internal coding protocol, the parsed data is sent to the GTX data detection module 1-2; the GTX data detection module 1-2 is used to receive the two parsed GTX data transmitted by the GTX receiving module 1-1, and respectively perform correctness detection of the frame header, frame length and frame tail of each data. When the two data meet the requirements at the same time, the detected data is passed to the GTX data combining module 1-3, and the subsequent data is detected in real time to see if there are any abnormalities, and the detection results are reported to the laser communication payload control module 6; the GTX data combining module 1-3 is used to receive the two detected GTX data transmitted by the GTX data detection module 1-2, merge the two data into one data, and send it to the digital signal processing module 2.

[0014] Furthermore, the digital signal processing module 2 includes a data splitting module 2-1, an AOS framing module 2-2, an encoding module 2-3, an scrambling module 2-4 and a data combining module 2-5;

[0015] The data splitting module 2-1 is used to receive data from the GTX uplink receiving module 1, split the data into eight parallel data, and transmit them to eight AOS framing modules 2-2 respectively; the AOS framing module 2-2 is used to receive one of the data from the data splitting module 2-1, frame the data according to the AOS frame structure, and send it to the encoding module 2-3, and send the framing parameters and framing results generated in the processing process to the laser communication load control module 6; the encoding module 2-3 is used to receive the framing data from the AOS framing module 2-2, and receive The laser communication load control module 6 receives the coding mode instruction, performs LDPC encoding or RS encoding on the data, and then sends the encoded data to the scrambling module 2-4, and at the same time sends the coding synchronization state generated during the processing to the laser communication load control module 6; the scrambling module 2-4 is used to scramble the encoded data, and send the scrambled data to the data combining module 2-5; the data combining module 2-5 is used to synthesize the received eight-way parallel scrambled data into one way of data, and pass it to the GTX downlink sending module 3, and at the same time count the amount of data sent and send it to the laser communication load control module 6.

[0016] The advantages of the present invention compared with the prior art are:

[0017] 1. This laser communication device receives two parallel data sent by the satellite platform, and designs two parallel GTX data detection and combining functions to ensure the stability and accuracy of the two data.

[0018] 2. In terms of digital signal processing, this laser communication device adopts branching framing and combining transmission, which reduces the resource occupation of FPGA and has stable performance.

[0019] 3. The downlink transmission rate of this laser communication device supports laser data transmission at three speed levels: 1.25G, 5G, and 10G, as well as two encoding methods: LDPC and RS, ensuring the reliability of the link. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an electrical schematic diagram of an embodiment of a multi-rate high-speed laser communication device of the present invention.

[0021] Figure 2 It is an electrical schematic diagram of an embodiment of the GTX uplink receiving module of the present invention.

[0022] Figure 3 It is an electrical schematic diagram of an embodiment of a digital signal processing module of the present invention. DETAILED DESCRIPTION

[0023] Reference Figure 1The present invention discloses a multi-rate high-speed laser communication device, comprising a GTX uplink receiving module 1, a digital signal processing module 2, a GTX downlink sending module 3, a laser control module 4, an optical-mechanical module 5 and a laser communication load control module 6; Figure 1 The present invention is a schematic diagram of an embodiment of a parallel frame search and frame length error correction forwarding device based on a variable length frame structure. Figure 1 Connect the lines.

[0024] A multi-rate high-speed laser communication device comprises a GTX uplink receiving module 1, a digital signal processing module 2, a GTX downlink sending module 3, a laser control module 4, an optical machine module 5 and a laser communication payload control module 6; the GTX uplink receiving module 1 is used to receive two parallel data sent by a satellite platform, and perform content detection and combining processing on the data, report the detection result of the data to the laser communication payload control module 6, and send the combined data to the digital signal processing module 2; the digital signal processing module 2 is used to receive the data sent by the GTX uplink receiving module 1, split, frame and encode the data, the encoding method is controlled by the instruction of the laser communication payload control module 6, RS encoding or LDPC encoding is selected, the data is scrambled and combined after encoding, and sent to the GTX downlink sending module 3 after completion, and the framing state, encoding state and the amount of data sent are reported to the laser communication payload control module 6; the GTX downlink sending module 3 is used to receive the rate instruction sent by the laser communication payload control module 6, comprising 1 .25G rate, 5G rate and 10G rate, and receive the communication data from the digital signal processing module 2 at the same time, convert the communication data into the data format required by GTX, and send it to the laser control module 4 at the specified rate, and send the working status to the laser communication payload control module 6; the laser control module 4 is used to receive the remote control data sent by the laser communication payload control module 6, control the working parameters of the laser driver chip, and convert the GTX data sent by the GTX downlink sending module 3 into an optical signal with an electrical signal, and send it to the optical machine module 5, and send the working status of the laser to the laser communication payload control module 6; the optical machine module 5 is used to receive the optical signal sent by the laser control module 4 and forward it; the laser communication payload control module 6 is used to control the working parameters and working status of the laser control module 4 by sending remote control data, and send instructions to the digital signal processing module 2 and the GTX downlink sending module 3, and collect the telemetry data reported by other modules, and send it to the satellite platform for real-time monitoring.

[0025] like Figure 2 As shown, the GTX uplink receiving module 1 includes a GTX receiving module 1-1, a GTX data detection module 1-2 and a GTX data combining module 1-3;

[0026] The GTX receiving module 1-1 is used to receive two parallel data sent by the satellite platform. After being processed by the GTX internal coding protocol, the parsed data is sent to the GTX data detection module 1-2; the GTX data detection module 1-2 is used to receive the two parsed GTX data transmitted by the GTX receiving module 1-1, and respectively perform correctness detection of the frame header, frame length and frame tail of each data. When the two data meet the requirements at the same time, the detected data is passed to the GTX data combining module 1-3, and the subsequent data is detected in real time to see if there are any abnormalities, and the detection results are reported to the laser communication payload control module 6; the GTX data combining module 1-3 is used to receive the two detected GTX data transmitted by the GTX data detection module 1-2, merge the two data into one data, and send it to the digital signal processing module 2.

[0027] like Figure 3 As shown, the digital signal processing module 2 includes a data splitting module 2-1, an AOS framing module 2-2, an encoding module 2-3, an scrambling module 2-4 and a data combining module 2-5;

[0028] The data splitting module 2-1 is used to receive data from the GTX uplink receiving module 1, split the data into eight parallel data, and pass them to eight AOS framing modules 2-2; the AOS framing module 2-2 is used to receive one of the data from the data splitting module 2-1, frame the data according to the AOS frame structure, and send it to the encoding module 2-3, and send the framing parameters and framing results generated in the processing process to the laser communication load control module 6; the encoding module 2-3 is used to receive the framing data from the AOS framing module 2-2, and receive the laser communication payload control module 6. The optical communication load control module 6 receives the coding method instruction, performs LDPC encoding or RS encoding on the data, and then sends the encoded data to the scrambling module 2-4, and at the same time sends the coding synchronization state generated during the processing to the laser communication load control module 6; the scrambling module 2-4 is used to scramble the encoded data, and send the scrambled data to the data combining module 2-5; the data combining module 2-5 is used to synthesize the received eight-way parallel scrambled data into one way of data, and pass it to the GTX downlink sending module 3, and at the same time count the amount of data sent and send it to the laser communication load control module 6.

Claims

1. A multi-rate high-speed laser communication device, comprising a GTX downlink transmission module (3), a laser control module (4), an optical-mechanical module (5) and a laser communication load control module (6); characterized in that: It also includes a GTX uplink receiving module (1) and a digital signal processing module (2); The GTX uplink receiving module (1) is used to receive two parallel data sent by the satellite platform, perform content detection and combining processing on the data, report the detection result of the data to the laser communication load control module (6), and send the combined data to the digital signal processing module (2); The digital signal processing module (2) is used to receive data transmitted from the GTX uplink receiving module (1), split, frame and encode the data. The encoding method is controlled according to the instruction of the laser communication load control module (6), and RS encoding or LDPC encoding is selected. After the encoding is completed, the data is scrambled and combined, and sent to the GTX downlink sending module (3). At the same time, the framing state, encoding state and the amount of data sent are reported to the laser communication load control module (6); The GTX downlink transmission module (3) is used to receive the rate instruction transmitted from the laser communication load control module (6), including three rate levels of 1.25G rate, 5G rate and 10G rate, and simultaneously receive the communication data transmitted from the digital signal processing module (2), convert the communication data into the data format required by GTX, and then send it to the laser control module (4) at the specified rate level, and simultaneously send the working status to the laser communication load control module (6); The laser control module (4) is used to receive remote control data sent by the laser communication load control module (6), control the working parameters of the laser driver chip, convert the GTX data sent by the GTX downlink sending module (3) into an optical signal in the form of an electrical signal, and send it to the optical machine module (5), and at the same time send the working state of the laser to the laser communication load control module (6); An optical-mechanical module (5) is used to receive and forward the optical signal sent by the laser control module (4); The laser communication payload control module (6) is used to control the working parameters and working state of the laser control module (4) by sending remote control data, and to send instructions to the digital signal processing module (2) and the GTX downlink sending module (3), and at the same time collect telemetry data reported by other modules and send it to the satellite platform for real-time monitoring.

2. A multi-rate high-speed laser communication device according to claim 1, characterized in that: The GTX uplink receiving module (1) comprises a GTX receiving module (1-1), a GTX data detecting module (1-2) and a GTX data combining module (1-3); The GTX receiving module (1-1) is used to receive two channels of parallel data sent by a satellite platform, and after being processed by a GTX internal coding protocol, the parsed data is sent to a GTX data detection module (1-2); the GTX data detection module (1-2) is used to receive two channels of parsed GTX data sent by the GTX receiving module (1-1), and respectively perform correctness detection of a frame header, a frame length and a frame tail on each channel of data; when the two channels of data meet the requirements at the same time, the detected data is transmitted to a GTX data combining module (1-3), and subsequent data is detected in real time to see if there are any abnormalities, and the detection result is reported to a laser communication payload control module (6); the GTX data combining module (1-3) is used to receive two channels of detected GTX data sent by the GTX data detection module (1-2), combine the two channels of data into one channel of data, and send the data to a digital signal processing module (2).

3. A multi-rate high-speed laser communication device according to claim 1, characterized in that: The digital signal processing module (2) comprises a data splitting module (2-1), an AOS framing module (2-2), an encoding module (2-3), an scrambling module (2-4) and a data combining module (2-5); The data splitting module (2-1) is used to receive data transmitted from the GTX uplink receiving module (1), split the data into eight parallel data, and transmit them to eight AOS framing modules (2-2) respectively; the AOS framing module (2-2) is used to receive one of the data transmitted from the data splitting module (2-1), frame the data according to the AOS frame structure, and send it to the encoding module (2-3), and at the same time send the framing parameters and framing results generated during the processing to the laser communication load control module (6); the encoding module (2-3) is used to receive the framing data transmitted from the AOS framing module (2-2), and at the same time receive the framing data transmitted from the AOS framing module (2-2). The laser communication payload control module (6) receives the coding mode instruction from the laser communication payload control module (6), performs LDPC coding or RS coding on the data, and then sends the coded data to the scrambling module (2-4), and simultaneously sends the coding synchronization state generated during the processing to the laser communication payload control module (6); the scrambling module (2-4) is used to scramble the coded data, and then sends the scrambled data to the data combining module (2-5); the data combining module (2-5) is used to combine the received eight parallel scrambled data into one data, and transmit it to the GTX downlink transmission module (3), and simultaneously count the amount of data sent and send it to the laser communication payload control module (6).

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