A switching system based on low frequency signal

Abstract

The present invention relates to the technical field of microwave technology, and relates to a switching system based on signal low frequency, which also includes a code modulation component for code element rate correction arranged at intervals in the channel, and the code modulation component includes a primary correction unit for transmission rate adjustment, a secondary correction unit and a tertiary correction unit for code element number adaptive adjustment. The code modulation component can effectively improve the regulation of the code element number, and can timely adjust the code element rate, etc., thereby ensuring the frequency of the signal and ultimately reducing the distortion probability of the signal.

Description

Technical Field

[0001] The invention relates to the technical field of microwave technology, and in particular to a switching system based on low-frequency signals. Background Art

[0002] Microwave, as a transmission mode of communication network, can constitute the entire communication transmission network together with other transmission modes. In order to transmit multiple signals on a microwave line at the same time, digital microwave system usually adopts time division multiplexing technology as multiplexing technology. The multiplexing level in the digital microwave system is multiplexed and demultiplexed step by step according to the level defined by PDH. Time division multiplexing technology controls the interconnection and action between channels of microwave control system. However, signal distortion will occur in the process of interconnection between channels, that is, the digital microwave transmission frequency is abnormal, which is especially easy to occur when the signal frequency is low. When transmitting signals, the existing technology often has an upper limit on the symbol transmission rate, which leads to serious inter-symbol crosstalk problem once the signal transmission rate exceeds this upper limit. Summary of the invention

[0003] The purpose of the present invention is to provide a switching system based on low-frequency signals to solve the problem in the prior art that signals are prone to inter-code interference in a low-frequency state, thereby causing signal distortion.

[0004] The object of the present invention is achieved by the following technical scheme, including a channel, characterized in that it also includes a modulation component for code rate correction arranged at intervals in the channel, and the modulation component includes a primary correction unit for transmission rate adjustment, a secondary correction unit and a tertiary correction unit for code number adaptation adjustment.

[0005] It should be noted that setting up a code modulation component can effectively improve the regulation of the number of code elements, and at the same time can make timely adjustments to the code element rate, etc., thereby ensuring the frequency of the signal and ultimately reducing the probability of signal distortion.

[0006] The coding component also includes a first frequency modulation unit and a second frequency modulation unit for signal frequency adjustment. The first frequency modulation unit is arranged between the first-level correction unit and the second-level correction unit and is communicatively connected. The second frequency modulation unit is arranged between the second-level correction unit and the third-level correction unit and is communicatively connected.

[0007] It should be noted that the provision of the first frequency modulation unit and the second frequency modulation unit can effectively ensure that the frequency change can be controlled, and ensure that during the signal transmission process, the bandwidth can be within a reasonable controllable range.

[0008] A branch channel is provided between the first frequency modulation unit and the secondary correction unit, and the branch channel is configured for branch transmission of signals.

[0009] It should be noted that setting up a branch channel can prevent signal congestion, which in turn leads to untimely signal transmission and ultimately affects signal reception.

[0010] A collection channel is provided between the secondary correction unit and the second frequency modulation unit, and the collection channel is configured to collect information instructions transmitted by the branch channel.

[0011] It should be noted that the purpose of setting up the aggregation channel is to enable the signal to be aggregated and transmitted after being processed, to ensure the strength of the signal, and to control the signal strength under normal signal transmission.

[0012] One end of the channel is provided with an access adjustment port for receiving external information sources, and the end of the channel away from the access adjustment port is provided with an external output demodulation port for signal external output demodulation.

[0013] It should be noted that setting the modulation port and the demodulation port can achieve efficient reception of the information source and efficient external output of the signal.

[0014] A plurality of waveform change control modules are arranged in parallel in the first-stage correction unit, the second-stage correction unit and the third-stage correction unit.

[0015] It should be noted that setting up a waveform control module can ensure that the waveform of the signal can be maintained within a controllable range, thereby reducing the probability of signal distortion caused by waveform changes beyond the range.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] 1. Setting the code modulation component can effectively improve the regulation of the number of code elements, and can also make timely adjustments to the code element rate, thereby ensuring the frequency of the signal and ultimately reducing the probability of signal distortion;

[0018] 2. Setting the first frequency modulation unit and the second frequency modulation unit can effectively ensure that the frequency change can be controlled, and ensure that the bandwidth can be within a reasonable controllable range during signal transmission;

[0019] 3. The purpose of setting up the aggregation channel is to enable the signal to be aggregated and transmitted after being processed, to ensure the strength of the signal and to control the signal strength under normal signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the system structure of the present invention.

[0021] Legend: 1-adjustment port; 2-first-level correction unit; 3-first frequency modulation unit; 4-second-level correction unit; 5-aggregation channel; 6-second frequency modulation unit; 7-third-level correction unit; 8-demodulation port; 9-branch channel; 10-channel. DETAILED DESCRIPTION

[0022] Please refer to the attached instructions Figure 1 This embodiment provides a switching system based on signal low frequency. The switching system based on signal low frequency is mainly used to solve the problem that the prior art signal is prone to inter-code interference in the low-frequency state, which leads to signal distortion. The switching system based on signal low frequency is already in the actual use stage.

[0023] The specific implementation of the present invention is as follows: it includes a channel 10, and also includes a modulation component for code rate correction that is arranged at intervals in the channel 10, the modulation component includes a primary correction unit 2 for transmission rate adjustment, a secondary correction unit 4 and a tertiary correction unit 7 for code number adaptation adjustment, the modulation component also includes a first frequency modulation unit 3 and a second frequency modulation unit 6 for signal frequency adjustment, the first frequency modulation unit 3 is arranged between the primary correction unit 2 and the secondary correction unit 4 and is communicatively connected, the second frequency modulation unit 6 is arranged between the secondary correction unit 4 and the tertiary correction unit 7 and is communicatively connected. A branch channel 9 is arranged between the first frequency modulation unit 3 and the secondary correction unit 4, and the branch channel 9 is configured for branch transmission of signals. A collection channel 5 is arranged between the secondary correction unit 4 and the second frequency modulation unit 6, and the collection channel 5 is configured for collecting information instructions transmitted by the branch channel 9. An access adjustment port 1 for receiving external information sources is arranged at one end of the channel 10, and an external output demodulation port 8 for external signal output demodulation is arranged at the end of the channel 10 away from the access adjustment port 1. Multiple waveform change control modules are arranged in parallel in the first correction unit 2, the second correction unit 4 and the third correction unit 7.

[0024] It should be noted that the system of the present invention relies on a signal processing device. The signal processing device can be a device of the prior art or any signal processing and adjustment device, which is not limited here. At the same time, when the distortion rate reduction regulation is performed in the prior art, a complex branching process is performed. The local code element rate in the signal processed in this way is relatively high, and there is still a large possibility of distortion at any time.

[0025] The specific operation process of the present invention is as follows: first, the operator will connect the system of the present invention to the relevant device, and then output the signal source. When the signal source starts to output, the information in the signal source will enter the adjustment port, and then the signal will be transmitted to the primary correction unit through the channel. Under the action of the waveform change control module in the primary transmission unit, the waveform of the signal will be detected. If the waveform meets the preset waveform area, the signal will enter the first frequency modulation unit. Under the action of the first frequency modulation unit, the frequency will be corrected to the required frequency range. The frequency correction adopts the method of adjusting the frequency in the prior art, which will not be repeated here. The subsequent frequency modulation method is also the same as the prior art, which will not be repeated later. Furthermore, the signal after the first frequency modulation processing will be transmitted through the branch channel, and the transmission method is through dual-channel transmission. This setting method is to avoid signal congestion, which may cause untimely or delayed signal transmission and affect subsequent demodulation. The signal through the branch channel will enter the secondary unit for processing. At this time, the signal setting adjustment will be performed again. After the waveform change control module is adjusted to a signal that meets the requirements, it will be collected and received through the collection channel, and the signal strength will be restored to the original strength again. Then the signal will enter the second frequency modulation unit, and the frequency will be adjusted in the second frequency modulation unit. After the adjustment, the signal will enter the third-level correction unit for adjustment. After the adjustment, it will enter the demodulation port for demodulation operation, and then the signal will be output. It should be noted that the first-level correction unit, the second-level correction unit and the third-level correction unit all adjust the symbol rate of the signal to ensure that the symbol rate can be maintained within a normal range, thereby reducing the distortion rate.

[0026] At the same time, in order to solve the problem of inter-code crosstalk and thus signal distortion, the correction unit at each level of the entire system is adjusting the signal's symbol rate in real time, and each frequency modulation unit is adjusting the signal's bandwidth and frequency in real time, thereby efficiently ensuring signal transmission operations.

[0027] The prior art usually uses a single time division multiplexing technology to distort the signal, and the possibility of signal distortion is as high as 40%. However, the technology of the present application uses a multi-stage correction unit, a waveform conversion control module and multiple frequency modulation units to work together to ensure that the signal distortion rate is within a stable range. The applicant has measured through experiments with a large number of factors that the distortion rate of the present invention is within the range of 2%-3.5%.

[0028] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A switching system based on low-frequency signals, comprising a channel (10), characterized in that: The invention also comprises a modulation component for symbol rate correction which is arranged at intervals in the channel (10), wherein the modulation component comprises a primary correction unit (2) for adjusting the transmission rate, a secondary correction unit (4) and a tertiary correction unit (7) for adaptively adjusting the number of symbols; the modulation component also comprises a first frequency modulation unit (3) and a second frequency modulation unit (6) for adjusting the signal frequency, wherein the first frequency modulation unit (3) is arranged between the primary correction unit (2) and the secondary correction unit (4) and is communicatively connected, and the second frequency modulation unit (6) is arranged between the secondary correction unit (4) and the tertiary correction unit (7) and is communicatively connected; and a plurality of waveform change control modules are arranged in parallel in the primary correction unit (2), the secondary correction unit (4) and the tertiary correction unit (7).

2. A switching system based on signal low frequency according to claim 1, characterized in that: A branch channel (9) is provided between the first frequency modulation unit (3) and the secondary correction unit (4), and the branch channel (9) is configured for branch transmission of signals.

3. A switching system based on signal low frequency according to claim 2, characterized in that: A collection channel (5) is provided between the secondary correction unit (4) and the second frequency modulation unit (6), and the collection channel (5) is configured to collect information instructions transmitted by the branch channel (9).

4. A switching system based on signal low frequency according to claim 1, characterized in that: One end of the channel (10) is provided with an access adjustment port (1) for receiving external information sources, and the end of the channel (10) away from the access adjustment port (1) is provided with an external output demodulation port (8) for signal external output demodulation.

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