CN116707709B - Signal transmitting method, signal receiving method and signal transmitting method - Google Patents

Signal transmitting method, signal receiving method and signal transmitting method Download PDF

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Publication number
CN116707709B
CN116707709B CN202310732756.4A CN202310732756A CN116707709B CN 116707709 B CN116707709 B CN 116707709B CN 202310732756 A CN202310732756 A CN 202310732756A CN 116707709 B CN116707709 B CN 116707709B
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signal
module
error correction
data packet
signals
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CN116707709A (en
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李彦
程煜烽
江辉
魏立华
汤金宽
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Everpro Technologies Wuhan Co Ltd
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Everpro Technologies Wuhan Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

The present disclosure discloses a signal transmitting method, a signal receiving method, and a signal transmitting method. The signal transmission method comprises the following steps: acquiring a first signal from a source terminal; analyzing the first signal to identify the first signal channel number and the first code element rate; the first signal channel number is the signal channel number provided by the source end, and the first code element rate is the code element rate of the first signal; modulating the first signal in the determined modulation mode to obtain a second signal; the number of signal channels of the second signal is smaller than that of the first signal channels. By the signal transmission method, the number of wires required for the signal transmission cable can be reduced, thereby reducing the transmission cost.

Description

Signal transmitting method, signal receiving method and signal transmitting method
Technical Field
The present disclosure relates generally to the field of signal processing technology. More specifically, the present disclosure relates to a signal transmission method, a signal reception method, and a signal transmission method.
Background
At present, in the electric signal transmission process, electric signals can be transmitted through a plurality of metal wires, so that the transmission efficiency is improved. However, the use of a plurality of wires tends to result in an increase in the diameter of the signal transmission cable, thereby resulting in an increase in the cost of the signal transmission cable.
In particular, in the fields of multimedia transmission protocols and interfaces, the external interface mainly comprises a DP interface and an HDMI interface, wherein the HDMI Channel corresponding to the HDMI interface comprises 4 signal transmission lines, and the signal transmitted by the DP interface is composed of a data Channel signal for transmitting an image and an auxiliary Channel signal for transmitting status and control information related to the image, and specifically comprises a Main DisplayPort data transmission Channel Main Link, an auxiliary Channel AUX Channel and a connection Channel Link.
Therefore, the current HDMI/DP cable requires 4 high-gauge wires to transmit signals, and the manufacturing cost of the HDMI/DP cable increases sharply with the increase of the signal rate and the increase of the cable length.
In view of this, it is desirable to provide a signaling scheme to reduce the number of wires required for a signal transmission cable during signaling, thereby reducing transmission costs.
Disclosure of Invention
To address at least one or more of the technical problems mentioned above, the present disclosure proposes, in various aspects, a signal transmission method, a signal reception method, a signal transmission method, and related products.
In a first aspect, the present disclosure provides a signaling module comprising: the input end of the first signal parameter judging module is used for being connected with the source end and receiving a first signal provided by the source end so as to identify the first signal channel number and the first code element rate; the first signal channel number is the channel number of the source end for providing the first signal, and the first symbol rate is the symbol rate of the first signal provided by the source end; and the PAM-N modulation module performs PAM-N modulation processing on the first signal so that the number of signal channels of the second signal output by the PAM-N modulation module is smaller than or equal to the number of the first signal channels.
In some embodiments of the present disclosure, the signaling module further comprises: the first signal alignment module is used for connecting the source end so as to align the first signals in time and form first aligned signals; a first forward error correction module for generating an error correction code from the first alignment signal; and the signal packaging module is used for packaging the received signal as a signal to be modulated, packaging the signal to be modulated into a first data packet, and adding the first signal channel number and the first code element rate into the packet header information of the first data packet.
In some embodiments of the present disclosure, a first forward error correction module has an input coupled to the first signal alignment module; and the input end of the signal packaging module is respectively connected with the output ends of the first forward error correction module and the first signal parameter judging module, and a first alignment signal output by the first signal alignment module is used as a signal to be modulated.
In some embodiments of the disclosure, the input end of the signal packaging module is connected with the output ends of the first signal alignment module and the first signal parameter determination module respectively, and the first alignment signal output by the first signal alignment module is used as a signal to be modulated; and the input end of the first forward error correction module is connected with the signal packaging module, and the generated error correction code is added into the first data packet.
In some embodiments of the present disclosure, the signaling module further comprises: the input end of the signal branching module is respectively connected with the output ends of the first signal alignment module and the first signal parameter judging module, and the output end of the signal branching module is connected with the input end of the first forward error correction module and is used for branching the first alignment signal into a plurality of paths of parallel signals according to the number of first signal channels and the first code element rate; the first forward error correction module is used for generating error correction codes according to the multipath parallel signals; the signal packaging module takes the multipath parallel signals output by the signal branching module as signals to be modulated.
In some embodiments of the present disclosure, the signal transmission module includes a plurality of signal packaging modules and a plurality of PAM-N modulation modules; the signal packaging modules and the PAM-N modulation modules are in one-to-one correspondence, wherein the input ends of the signal packaging modules are connected with the output ends of the first signal alignment module and the first signal parameter judging module, and the output end of each signal packaging module in the signal packaging modules is connected with the input end of the corresponding PAM-N modulation module.
In some embodiments of the disclosure, the PAM-N modulation module has an input connected to an output of the signal packaging module, the output being configured to be connected to the signal transmission cable, for modulating the packaged signal to be modulated according to the determined modulation mode to form a second signal for transmission on the signal transmission cable.
In some embodiments of the present disclosure, the first signal is a high-speed signal comprising: multimedia signals and/or clock signals.
In some embodiments of the present disclosure, the symbol rate of the second signal is less than or equal to the first symbol rate.
In some embodiments of the present disclosure, the first signal parameter determination module is configured to identify a change in the first number of signal channels and/or the first symbol rate during signal transmission, and correspondingly, the PAM-N modulation module is further configured to change the modulation mode to adapt to the change in the first number of signal channels and/or the first symbol rate according to the result identified by the first signal parameter determination module.
In a second aspect, the present disclosure provides a signal transmission apparatus comprising: a signal receiving module, a signal transmission cable, and a signal transmitting module as in the first aspect; wherein, the signal receiving module includes: the input end of the PAM-N demodulation module is used for being connected with a signal transmission cable and demodulating a second signal; the demodulation mode of the PAM-N demodulation module corresponds to the modulation mode of the first signal in the PAM-N modulation module.
In some embodiments of the present disclosure, the signal receiving module includes: the input end of the signal unpacking module is connected with the output end of the PAM-N demodulation module, and is used for reading the packet header information of the second data packet output by the PAM-N demodulation module to obtain the number of first signal channels and the first code element rate, and decoding the second data packet into unpacking signals; the input end of the second forward error correction module is connected with the signal unpacking module and is used for carrying out error correction decoding on unpacked signals according to error correction codes in the second data packets; the output end of the signal demultiplexing module is used for connecting the receiving end, the input end of the signal demultiplexing module is respectively connected with the output ends of the second forward error correction module and the second signal parameter judging module, and is used for taking the unpacked signals after error correction decoding as signals to be multiplexed, multiplexing the signals to be multiplexed on the corresponding signal lines with the same number as the first signal channels to form first signals, and outputting the first signals to the receiving end on the corresponding signal lines at a first code element rate; and the second signal parameter judging module is connected with the output end of the signal unpacking module, the output end of the second signal parameter judging module is connected with the signal unpacking module, and the second signal parameter judging module is used for identifying the first signal channel number and the first code element rate from the packet header information read by the signal unpacking module and controlling the signal unpacking module to multiplex the signals to be multiplexed based on the first signal channel number and the first code element rate.
In some embodiments of the present disclosure, a signal transmission cable includes a plurality of cores; the signal receiving module includes: a plurality of PAM-N demodulation modules and a plurality of signal unpacking modules; wherein the PAM-N demodulation modules, the signal unpacking modules and the fiber cores are in one-to-one correspondence; the input ends of the PAM-N demodulation modules are respectively connected with corresponding fiber cores, the output ends of the PAM-N demodulation modules are respectively connected with corresponding signal unpacking modules, and the PAM-N demodulation modules are used for demodulating second signals transmitted by the fiber cores respectively to obtain a plurality of second data packets, and the second data packets are respectively transmitted to the signal unpacking modules; the output ends of the plurality of signal unpacking modules are connected with the input end of the second signal parameter judging module, and the plurality of signal unpacking modules are used for decoding the plurality of second data packets into a plurality of unpacking signals.
In some embodiments of the present disclosure, the signaling module includes: a signal branching module; the signal receiving module includes: a second signal alignment module; the unpacked signals obtained by decoding by the signal unpacking module are multipath parallel signals; the input end of the second signal alignment module is connected with the output end of the signal unpacking module, and the output end of the second signal alignment module is connected with the input end of the second forward error correction module and is used for aligning the multipath parallel signals output by the signal unpacking module in time; the second forward error correction module is used for performing error correction decoding on the aligned multipath parallel signals according to the error correction codes in the second data packet; the signal demultiplexing module is used for taking the multipath parallel signals after error correction decoding as signals to be multiplexed.
In a third aspect, the present disclosure provides a signal receiving module comprising: the input end of the PAM-N demodulation module is used for being connected with the signal transmission cable and demodulating a second signal obtained from the signal transmission cable to obtain a second data packet; the input end of the signal unpacking module is connected with the output end of the PAM-N demodulation module, and is used for reading the packet header information of the second data packet to obtain the first signal channel number and the first code element rate, and decoding the second data packet into unpacking signals; and the output end of the signal demultiplexing module is connected with the receiving end, the input end of the signal demultiplexing module is connected with the output end of the signal unpacking module, and the signal unpacking module is used for taking unpacking signals as signals to be multiplexed according to the number of first signal channels and the first code element rate, multiplexing the signals to be multiplexed on the corresponding signal lines with the same number as the number of the first signal channels to form first signals, and transmitting the first signals on the corresponding signal lines at the first code element rate.
In some embodiments of the present disclosure, the signal receiving module includes: a plurality of PAM-N demodulation modules and a plurality of signal unpacking modules; wherein the PAM-N demodulation modules and the signal unpacking modules are in one-to-one correspondence; the input ends of the PAM-N demodulation modules are used for being connected with corresponding signal transmission cables and demodulating the second signals to obtain second data packets; the input ends of the plurality of signal unpacking modules are respectively connected with the output ends of the corresponding PAM-N demodulation modules, and the output ends are connected with the input ends of the second signal parameter judging modules and are used for decoding the plurality of second data packets into a plurality of unpacking signals and sending the plurality of unpacking signals to the signal unpacking module.
In some embodiments of the present disclosure, the signal receiving module further comprises: the input end of the second forward error correction module is connected with all the signal unpacking modules and is used for carrying out error correction decoding on unpacked signals according to error correction codes in the second data packets and sending the unpacked signals after error correction decoding to the signal unpacking module; the signal demultiplexing module is used for taking the unpacked signal after error correction decoding as a signal to be multiplexed; and the second signal parameter judging module is connected with the output end of the signal unpacking module, the output end of the second signal parameter judging module is connected with the signal unpacking module, and the second signal parameter judging module is used for identifying the first signal channel number and the first code element rate from the packet header information read by the signal unpacking module and controlling the signal unpacking module to multiplex the signals to be multiplexed based on the first signal channel number and the first code element rate.
In some embodiments of the present disclosure, the signal receiving module further comprises: a second signal alignment module; in the signal receiving module, the unpacked signals obtained by decoding by the signal unpacking module are multipath parallel signals; the input end of the second signal alignment module is connected with the output end of the signal unpacking module, and the output end of the second signal alignment module is connected with the input end of the second forward error correction module and is used for aligning the multipath parallel signals output by the signal unpacking module in time; the second forward error correction module is used for performing error correction decoding on the aligned multipath parallel signals according to the error correction codes in the second data packet; the signal demultiplexing module is used for taking the multipath parallel signals after error correction decoding as signals to be multiplexed.
In a fourth aspect, the present disclosure provides a signal module comprising: a signal transmitting module as in the first aspect and a signal receiving module as in the third aspect; the number of the PAM-N modulation modules is consistent with that of the PAM-N demodulation modules.
In a fifth aspect, the present disclosure provides a signaling method comprising: acquiring a first signal from a source terminal; analyzing the first signal to identify the first signal channel number and the first code element rate; the first signal channel number is the signal channel number provided by the source end, and the first code element rate is the code element rate of the first signal; modulating the first signal in the determined modulation mode to obtain a second signal; the number of signal channels of the second signal is smaller than that of the first signal channels.
In some embodiments of the present disclosure, the parsing step is followed by: an alignment step, namely aligning the first signal from M paths of serial signals into M paths of parallel signals, wherein M is a positive integer; generating error correction codes through a forward error correction coding technology according to M paths of parallel signals; m paths of parallel signals are used as signals to be modulated, the signals to be modulated and error correction codes are packed to form a first data packet, and the number of first signal channels and a first code element rate are added to header information of the first data packet; modulating the first signal in the determined modulation mode to obtain a second signal, including: and modulating the packed signal to be modulated through the determined modulation mode to obtain a second signal.
In some embodiments of the present disclosure, the alignment step is followed by: splitting M paths of parallel signals according to the first signal channel number and the first code element rate to form S1 paths of parallel signals, wherein S1 is larger than M, and S1 is a positive integer; the error correction code generation step includes: generating error correction codes through a forward error correction coding technology according to the S1-path parallel signals; the packaging step comprises the following steps: and taking the S1-path parallel signals as signals to be modulated, packaging the signals to be modulated and error correction codes to form a first data packet, and adding the first signal channel number and the first code element rate to the packet head information of the first data packet.
In some embodiments of the present disclosure, the parsing step includes: taking the number of channels with level change of signals in a source end channel as the number of first signal channels; the rate of change of the level of the signal in the signal line is taken as the symbol rate corresponding to the current signal line.
In some embodiments of the present disclosure, the step of determining the modulation mode comprises: for a pair ofSolving to obtain a modulation mode number N; wherein n represents the number of first signal channels; and determining a modulation mode corresponding to the modulation mode number N.
In some embodiments of the present disclosure, the packaging step comprises: packaging the signal to be modulated and the error correction code to form a first data packet; inserting header information in a fixed format at a fixed position of the first data packet; the header information of the first data packet includes: a first number of signal channels and a first symbol rate.
In a sixth aspect, the present disclosure provides a signal transmission method comprising: acquiring a first signal from a source terminal; the signal transmitting module modulates the first signal to obtain a second signal; wherein, the signal transmission module includes: the system comprises a first signal parameter judging module and a PAM-N modulating module, wherein the input end of the first signal parameter judging module is used for being connected with a source end, and the first signal parameter judging module is used for receiving a first signal provided by the source end so as to identify a first signal channel number and a first code element rate; the first signal channel number is the signal channel number provided by the source end, and the first code element rate is the code element rate of the first signal; the PAM-N modulation module is connected with the first signal parameter judgment module and is used for carrying out modulation processing on the first signal to obtain a second signal; the signal transmission cable transmits the second signal to the signal receiving module; the signal receiving module demodulates the second signal to obtain a first signal; the first signal is output to the receiving end.
In some embodiments of the present disclosure, modulating the first signal to obtain the second signal includes: analyzing the first signal to identify a first number of signal channels and a first symbol rate; modulating the first signal to obtain a second signal; the number of signal channels of the second signal is smaller than or equal to that of the first signal channels.
In some embodiments of the present disclosure, modulating the first signal to obtain the second signal includes: analyzing the first signal to identify a first number of signal channels and a first symbol rate; aligning the first signal from M paths of serial signals into M paths of parallel signals, wherein M is a positive integer; generating error correction codes through a forward error correction coding technology according to M paths of parallel signals; m paths of parallel signals are used as signals to be modulated, the signals to be modulated and error correction codes are packed to form a first data packet, and the number of first signal channels and a first code element rate are added to header information of the first data packet; determining a modulation mode of the PAM-N modulation module according to the first signal channel number and the first code element rate; modulating the packed signal to be modulated in the determined modulation mode to obtain a second signal; the number of signal channels of the second signal is smaller than that of the first signal channels.
In some embodiments of the present disclosure, the alignment step is followed by: splitting M paths of parallel signals according to the first signal channel number and the first code element rate to form S1 paths of parallel signals, wherein S1 is larger than M, and S1 is a positive integer; the error correction code generation step includes: generating error correction codes through a forward error correction coding technology according to the S1-path parallel signals; the packaging step comprises the following steps: and taking the S1-path parallel signals as signals to be modulated, packaging the signals to be modulated and error correction codes to form a first data packet, and adding the first signal channel number and the first code element rate to the packet head information of the first data packet.
In some embodiments of the present disclosure, demodulating the second signal to obtain the first signal includes: demodulating a second signal obtained from the signal transmission cable by using a PAM-N demodulation module to obtain a second data packet; the demodulation mode of the PAM-N demodulation module corresponds to the modulation mode of the first signal by the PAM-N modulation module; reading header information of the second data packet to obtain a first signal channel number and a first code element rate; decoding the second data packet into an S2-way parallel signal; s2 is more than or equal to 1, and S2 is a positive integer; performing error correction decoding on the S2-path parallel signals according to the error correction code in the second data packet; and multiplexing the S2 paths of parallel signals after error correction decoding according to the first signal channel number and the first code element rate to form a first signal, wherein the first signal is an M paths of serial signals.
In some embodiments of the present disclosure, demodulating the second signal to obtain the first signal includes: demodulating a second signal obtained from the signal transmission cable by using a PAM-N demodulation module to obtain a second data packet; the demodulation mode of the PAM-N demodulation module corresponds to the modulation mode of the first signal by the PAM-N modulation module; reading header information of the second data packet to obtain a first signal channel number and a first code element rate; decoding the second data packet into an S2-way parallel signal; s2 is more than or equal to 1, and S2 is a positive integer; aligning S2 paths of parallel signals; performing error correction decoding on the aligned S2 paths of parallel signals according to the error correction code in the second data packet; and multiplexing the S2 paths of parallel signals after error correction decoding according to the first signal channel number and the first code element rate to form a first signal.
In some embodiments of the present disclosure, demodulating a second signal obtained from a signal transmission cable using a PAM-N demodulation module to obtain a second data packet includes: and recovering the second signal into a binary signal by adopting a demodulation mode corresponding to the modulation mode of the first signal in the PAM-N modulation module, and sending the binary signal to the signal unpacking module.
In some embodiments of the present disclosure, the multiplexing step comprises: the error correction decoded parallel signals are multiplexed onto the same number of corresponding signal lines as the number of the first signal channels to form a first signal, and the first signal is output to the receiving end at a first symbol rate on the corresponding signal lines.
In a seventh aspect, the present disclosure provides a signal receiving method comprising: obtaining a second signal from the signal transmission cable; the signal receiving module demodulates the second signal to obtain a second data packet; reading header information of the second data packet to obtain a first signal channel number and a first code element rate; decoding the second data packet into an unpacking signal; multiplexing the de-packetized signal according to the first number of signal channels and the first symbol rate to form a first signal; the first signal is output to the receiving end.
In some embodiments of the present disclosure, the unpacking signal is an M-way parallel signal, M being a positive integer; after decoding the second data packet into the unpacked signal, comprising: error correction decoding is carried out on M paths of parallel signals according to error correction codes in the first data packet; multiplexing the de-packetized signal according to the first number of signal channels and the first symbol rate to form a first signal, comprising: and according to the first signal channel number and the first code element rate, multiplexing the M paths of parallel signals after error correction decoding onto corresponding signal lines with the same number as the first signal channel number to form first signals, and outputting the first signals to a receiving end on the corresponding signal lines at the first code element rate.
In some embodiments of the present disclosure, the unpacking signal is an S2-way parallel signal, S2 is greater than or equal to 1, and S2 is a positive integer; after decoding the second data packet into the unpacked signal, comprising: aligning S2 paths of parallel signals; performing error correction decoding on the aligned S2 paths of parallel signals according to the error correction code in the first data packet; multiplexing the de-packetized signal according to the first number of signal channels and the first symbol rate to form a first signal, comprising: and multiplexing the S2-path parallel signals after error correction decoding onto corresponding signal lines with the same number as the first signal channels according to the first signal channel number and the first symbol rate to form first signals, and outputting the first signals to a receiving end on the corresponding signal lines at the first symbol rate.
Through the signal sending module provided by the above, the first signal parameter determining module in the embodiment of the disclosure can identify the first signal channel number and the first symbol rate, so that the PAM-N modulating module selects an adaptive modulating mode to perform pulse amplitude modulation on the first signal, and the modulating mode is used for modulating multiple signals in the first signal to form a second signal for signal transmission. Because the modulation processing can reduce the number of signal channels to be transmitted under the condition that the source end provides a plurality of channel data, the number of wires required for transmitting the second signal can be correspondingly reduced, and the transmission cost is reduced.
Drawings
The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:
fig. 1 shows a schematic configuration of a signal transmission module 10 of an embodiment of the present disclosure;
FIG. 2 illustrates a flow diagram of a signaling method 200 of an embodiment of the present disclosure;
FIG. 3 shows a schematic diagram of a signal transmission device according to an embodiment of the present disclosure;
fig. 4 shows a flow diagram of a signal transmission method 400 of an embodiment of the present disclosure;
fig. 5 shows a schematic structural view of a signal transmission device according to other embodiments of the present disclosure;
fig. 6 shows a schematic structural view of a signal transmission device according to further embodiments of the present disclosure;
fig. 7 shows a schematic diagram of the structure of a signaling module 10 of further embodiments of the present disclosure;
fig. 8 shows a schematic structural view of a signal transmission module 10 according to other embodiments of the present disclosure;
fig. 9 shows a schematic structural view of a signal transmission module 10 of further embodiments of the present disclosure;
fig. 10 shows a schematic structural view of a signal transmission module 10 according to other embodiments of the present disclosure;
fig. 11 illustrates a schematic diagram of the structure of a signal receiving module 20 of some embodiments of the present disclosure;
fig. 12 shows a schematic structural view of a signal receiving module 20 according to other embodiments of the present disclosure;
fig. 13 shows a schematic structural view of a signal receiving module 20 of further embodiments of the present disclosure;
fig. 14 shows a schematic structural view of a signal transmission device according to other embodiments of the present disclosure.
Detailed Description
The following description of the embodiments of the present disclosure will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the disclosure. Based on the embodiments in this disclosure, all other embodiments that may be made by those skilled in the art without the inventive effort are within the scope of the present disclosure.
It should be understood that the terms "comprises" and "comprising," when used in this specification and the claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present disclosure is for the purpose of describing particular embodiments only, and is not intended to be limiting of the disclosure. As used in the specification and claims of this disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the present disclosure and claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
As used in this specification and the claims, the term "if" may be interpreted as "when..once" or "in response to a determination" or "in response to detection" depending on the context. Similarly, the phrase "if a determination" or "if a [ described condition or event ] is detected" may be interpreted in the context of meaning "upon determination" or "in response to determination" or "upon detection of a [ described condition or event ]" or "in response to detection of a [ described condition or event ]".
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
Fig. 1 shows a schematic configuration of a signal transmission module 10 according to an embodiment of the present disclosure.
As shown in fig. 1, the present disclosure provides a signal transmission module 10 including a first signal parameter determination module 11 and a PAM-N modulation module 12.
The signal transmitting module 10 of fig. 1 receives the first signal from the source terminal during the signal transmission process, and transmits the first signal after signal modulation. Specifically, the input end of the first signal parameter determining module 11 of the signal sending module 10 is plugged to the source end, and after receiving the first signal provided by the source end, the PAM-N modulating module 12 identifies the first signal channel number and the first symbol rate of the first signal, and performs PAM-N modulation processing on the first signal, so that the signal channel number of the second signal output by the PAM-N modulating module 12 is smaller than or equal to the first signal channel number.
In this embodiment, the first number of signal channels is the number of channels used by the source to provide the first signal, i.e. the number of wires between the source and the signal transmitting module shown in fig. 5. In an embodiment, the source may send the first signal through one wire, or may send the first signal through multiple wires; the first symbol rate is a symbol rate of a first signal provided by the source.
In this embodiment PAM, pulse Amplitude Modulation, represents pulse amplitude modulation. N in PAM-N denotes a modulation mode number, specifically, N different signal levels are used for signal transmission. Taking PAM-4 as an example, it uses 4 different signal levels for signal transmission, and each symbol period may represent 2 bits of logic information. Taking PAM-8 as an example, in the pulse amplitude modulation mode of PAM-8, 8 different signal levels are adopted to perform signal transmission, each symbol period may represent 3 bits of logic information, and similarly, PAM-N may also be PAM-16, and so on, which is not described herein again.
In the disclosed embodiments, there are several modulation scenarios: the source end uses a single channel to transmit a first signal, and the PAM-N modulation module modulates the first signal and then outputs a second signal which is still transmitted through the single channel; secondly, the source end uses a plurality of channels to transmit a first signal, the PAM-N modulation module modulates the first signal and then outputs a second signal, and the second signal can be transmitted through a single channel, so that the wire reduction of the signal transmission cable is realized; and thirdly, the source end uses a plurality of channels to transmit a first signal, the PAM-N modulation module modulates the first signal and then outputs a second signal, the second signal is also transmitted through the plurality of channels, but the number of channels used by the second signal is smaller than that of channels used by the first signal, so that the wire reduction of the signal transmission cable is realized.
It should be further noted that, the symbol rates of the first signal provided by the source end and the second signal output by the PAM-N modulation module may be the same or different, for example, the symbol rate of the second signal output by the PAM-N modulation module may be less than or equal to the first symbol rate of the first signal.
Illustratively, to achieve a symbol rate of the second signal that is less than the first symbol rate, the symbol rate may be determined by applying the following equationAnd solving to obtain a modulation mode number N so as to determine the modulation mode of the PAM-N modulation module, wherein N represents the number of the first signal channels.
Exemplary, if the source provides a first signal through 2 channels, and adopts the PAM-4 modulation mode, the PAM-N modulation module can modulate the first signal into a single-channel second signal, and which means that the symbol rate of the second signal remains unchanged compared to the first symbol rate; if the source end provides a first signal through 2 channels and adopts a PAM-16 modulation mode, the PAM-N modulation module can modulate the first signal into a second signal with a single channel, andwhich represents the symbol rate of the second signal halved compared to the first symbol rate.
Based on the signaling module 10 shown in fig. 1, the present disclosure also provides a signaling method as shown in fig. 2. Fig. 2 shows a flow diagram of a signaling method 200 of an embodiment of the present disclosure.
As shown in fig. 2, in step S201, a first signal is acquired from a source terminal.
In some embodiments, the first signal output from the source end enters the first signal parameter determining module 11 and the PAM-N modulating module 12 in fig. 1, respectively. The first signal is a high-speed signal comprising: multimedia signals and/or clock signals.
Further, in the embodiment of the disclosure, the first signal is transmitted through the HDMI interface or the DP interface, and if the first signal is transmitted through the HDMI1.4 interface or the HDMI2.0 interface, the first signal may include a multimedia signal and a clock signal; if the transmission is performed via the HDMI2.1 interface or the DP interface, the first signal may include a multimedia signal. Wherein the multimedia signal refers to a video signal and/or an audio signal.
In step S202, the first signal is analyzed, and the first number of signal channels and the first symbol rate are identified.
In the present embodiment, the first signal parameter determination module 11 performs an analysis step, that is, step S202, to obtain the information of the first number of signal channels and the first symbol rate.
Specifically, the first signal parameter determining module 11 may take the number of channels in which the signal in the source channel has a level change as the first signal channel number, and in each channel, take the rate of the level change of the signal in the signal line as the symbol rate corresponding to the current signal line.
In step S203, the first signal is modulated in the determined modulation mode, resulting in a second signal.
Further, during the signal transmission process, the first signal parameter determining module 11 may identify the first number of signal channels and/or the first symbol rate, and accordingly, the PAM-N modulating module 12 is configured to change the modulation mode according to the result identified by the first signal parameter determining module 101 to adapt to the first number of signal channels and/or the first symbol rate.
Specifically, the modulation mode of the PAM-N modulation module 102 may be determined in step S203 by:
for a pair ofSolving to obtain a modulation mode number N; wherein n represents the number of first signal channels;
and determining a modulation mode corresponding to the modulation mode number N.
It should be noted that, in some embodiments, when the first signal channel number n is set, the first signal channel number n is determined according to the inequalityThe value range of N can be solved, namely a plurality of modulation modes which are selectable in practical application can be obtained, and then one modulation mode is determined from the plurality of modulation modes which are selectable. In other embodiments, the inequality can be solved if the modulation mode is also determined based on the amount of change in the symbol rate, e.g., requiring the symbol rate of the modulated signal to be halved Thereby obtaining the determined value of N, and obtaining the determined modulation mode.
Based on the signal transmission module 10 provided in the foregoing embodiment, the present disclosure further provides a signal transmission device as shown in fig. 3, and fig. 3 shows a schematic structural diagram of the signal transmission device according to the embodiment of the present disclosure. The signal transmission apparatus shown in fig. 3 includes a signal transmission module 10, a signal transmission cable 30, and a signal reception module 20 as shown in fig. 1.
The signal receiving module 20 includes a PAM-N demodulation module 21, an input end of the PAM-N demodulation module 21 is used for being connected to the signal transmission cable 30, a second signal sent by the signal sending module 10 is transmitted to the signal receiving module 20 through the signal transmission cable 30, the PAM-N demodulation module 21 is used for demodulating the second signal, and when the second signal is demodulated, a demodulation mode of the PAM-N demodulation module 21 corresponds to a modulation mode used by the PAM-N modulation module 12 for the first signal, so that the second signal is recovered to the first signal later.
Based on the signal transmission device shown in fig. 3, the embodiment of the disclosure provides a signal transmission method as shown in fig. 4. Fig. 4 shows a flow diagram of a signal transmission method 400 of an embodiment of the present disclosure.
As shown in fig. 4, in step S401, the signal transmission module acquires a first signal from a source terminal.
In step S402, the signal transmitting module modulates the first signal to obtain the second signal.
In this embodiment, the specific execution content of step S401 and step S402 may be referred to the specific description in the embodiment shown in fig. 2, and the detailed description will not be repeated here.
In step S403, the signal transmission cable transmits the second signal to the signal receiving module.
In practice, the signal transmission cable 30 may include one or more cores 31. When the signal transmission cable only includes one fiber core, the signal transmission device utilizes one signal sending module and one signal receiving module to complete signal transmission through one fiber core, and the structure of the signal transmission device can be shown in fig. 5, and fig. 5 shows a schematic structural diagram of the signal transmission device according to other embodiments of the disclosure; when the signal transmission cable includes a plurality of fiber cores, the signal transmission device utilizes the plurality of signal sending modules and the same number of signal receiving modules to perform signal transmission through the same number of fiber cores, and the structure of the signal transmission device can be shown in fig. 6, and fig. 6 shows a schematic structural diagram of the signal transmission device according to still other embodiments of the disclosure.
Further, in this embodiment, the core is copper wire.
In step S404, the signal receiving module demodulates the second signal to obtain the first signal.
In the modulation process, the demodulation mode used by the PAM-N demodulation module 21 corresponds to the modulation mode used by the PAM-N modulation module 12 for the first signal.
In step S405, the signal receiving module outputs a first signal to the receiving end.
By the signal transmission device and the signal transmission method in the foregoing embodiments, the signal transmission module may modulate the multi-channel first signal provided by the source end into the second signal with fewer channels, for example, the single-channel second signal, so as to reduce the number of fiber cores required for signal transmission, reduce the diameter of the signal transmission cable, and reduce the signal transmission cost.
In signal transmission, bit Error probability (BER) of a receiving end may be affected by transmission channel noise, interference, distortion, bit synchronization problem, attenuation, wireless multipath fading, and the like, resulting in signal impairment. In order to ensure that the BER at the receiving end meets the specification requirements, some embodiments of the present disclosure employ forward error correction (FEC, forward error correction) techniques, but since the multi-channel signals provided by the source end may not arrive at the same time due to errors or other reasons, a signal alignment module needs to be further configured to align the signals of the multiple channels in time.
Based on this, some embodiments of the present disclosure provide a signaling module as shown in fig. 7 and 8, fig. 7 shows a schematic structural diagram of the signaling module 10 of still other embodiments of the present disclosure, fig. 8 shows a schematic structural diagram of the signaling module 10 of other embodiments of the present disclosure, and the signaling module 10 shown in fig. 7 and 8 adds a first signal alignment module 13, a first forward error correction module 14, and a signal packing module 15 on the basis of the signaling module 10 shown in fig. 1.
In the signal transmitting module shown in fig. 7, an input end of the first signal alignment module 13 is directly connected to a source end, an output end of the first signal alignment module is directly connected to an input end of the first forward error correction module 14, an output end of the first forward error correction module 14 is connected to an input end of the signal packaging module 15, and an output end of the signal packaging module 15 is connected to an input end of the PAM-N modulation module 12. In addition, the output of the first signal parameter determination module 11 is connected to the input of the signal packaging module 15.
In the signal transmitting module, the first signal alignment module 13 aligns the first signals of the multiple channels transmitted by the source end in time, so as to form a first aligned signal, after the first aligned signal is input to the first forward error correction module 14, the first forward error correction module 14 generates an error correction code according to the first aligned signal, the error correction code is input to the signal packing module 15 together with the first aligned signal, the first aligned signal at this time is packed into a first data packet as a signal to be modulated, and meanwhile, the first signal parameter decision module 11 recognizes that the number of the first signal channels and the first symbol rate obtained by the first signal parameter decision module are added to the header information of the first data packet.
Since the first fec module 14 is configured to generate an error correction code from the input multiple parallel signals, the module does not process the input signals themselves, and thus, in some embodiments, the positions of the first fec module 14 and the signal packing module 15 may be exchanged to form the signal transmission device shown in fig. 8.
Specifically, in the signal transmitting module shown in fig. 8, an input end of the first signal alignment module 13 is used for being connected to a source end, an output end of the first signal alignment module is connected to an input end of the signal packaging module 15, an output end of the signal packaging module 15 is connected to an input end of the first forward error correction module 14, and an output end of the first forward error correction module 14 is connected to an input end of the PAM-N modulation module 12. In addition, the output terminal of the first signal parameter determination module 11 is still connected to the input terminal of the signal packaging module 15.
At this time, in the signal sending module 10, the first signal alignment module 13 aligns the first signals of the multiple channels sent by the source end in time, so as to form a first aligned signal, the first aligned signal is input to the signal packaging module 15 and is packaged into a first data packet as a signal to be modulated, meanwhile, the first signal parameter determining module 11 recognizes that the obtained number of the first signal channels and the first symbol rate will be added to the header information of the first data packet, and the first data packet will be input to the first forward error correction module 14, and the first forward error correction module 14 generates an error correction code and adds the error correction code to the first data packet.
It should be noted that, for the first signal of the multiple channels sent by the source, the size of the data block to be processed by the first fec module on each channel is determined by the processing capability of the first fec module 14, and if the number of the first signal channels is 4, if the first fec module 14 can process 16 channels of signals, each channel needs m bits of signal data, the total amount of the signal data that can be processed by the first fec module 14 is 16m bits of data, so that the first signal alignment module 13 can acquire 4m bits of signal data from each channel at a time and then process the signal data.
Based on the signal transmission module shown in fig. 7 or fig. 8, the disclosure further provides a signal transmission method, which specifically includes the following steps:
acquiring a first signal from a source terminal;
the first signal parameter judging module 11 analyzes the first signal to identify a first signal channel number and a first code element rate;
the first signal alignment module 13 aligns the first signal from M serial signals to M parallel signals; it should be noted that, unlike the first number of signal channels, M refers to the number of electrical signals in the channels being M, which is the number of lines virtually divided based on the electrical signals, and not the number of lines divided based on the physical device;
The first forward error correction module 14 generates an error correction code by a forward error correction coding technology according to the M paths of parallel signals;
the signal packaging module 15 packages the signal to be modulated and the error correction code to form a first data packet by taking M paths of parallel signals as signals to be modulated, and adds the first signal channel number and the first code element rate to the packet head information of the first data packet;
the PAM-N modulation module 12 modulates the packetized signal to be modulated by the determined modulation mode to obtain a second signal.
When the first signal parameter determining module 11 analyzes the first signal, the number of channels with level variation of the signal in the source channel is used as the number of the first signal channels, and the rate of level variation of the signal in the signal line is used as the symbol rate corresponding to the current signal line.
The PAM-N modulation module 12 is based onThe solution is performed to determine the modulation mode, and the specific solution process is already described in detail in the foregoing embodiments, which is not described herein.
The packing step performed by the signal packing module 15 may further include: and packaging the signal to be modulated and the error correction code to form a first data packet, and then inserting packet header information in a fixed format at a fixed position of the first data packet, wherein the packet header information of the first data packet comprises a first signal channel number and a first symbol rate.
While the structure and signaling method of the signaling module shown in fig. 7 and 8 have been described above, in other embodiments of the present disclosure, the signaling module may further be provided with a signal splitting module to perform signal splitting. Fig. 9 shows a schematic structural view of a signal transmission module 10 according to still other embodiments of the present disclosure, and fig. 10 shows a schematic structural view of a signal transmission module 10 according to still other embodiments of the present disclosure.
As shown in fig. 9 or fig. 10, the signal sending module 10 may further include a signal splitting module 16, whose input ends are respectively connected to the output ends of the first signal alignment module 13 and the first signal parameter determining module 11, and the output end of the signal splitting module 16 is further connected to the input end of the first forward error correction module 14, where the signal splitting module 16 can split the first aligned signal into multiple parallel signals according to the first number of signal channels and the first symbol rate identified by the first signal parameter determining module 11, and the first forward error correction module 14 generates an error correction code according to the multiple parallel signals.
The signal splitting module 16 is introduced to realize serial-parallel conversion of signals, the signals in the serial signals are transmitted one by one according to a certain sequence, the parallel signals are simultaneously transmitted with a plurality of signals, and the serial signals are converted into the parallel signals for transmission, so that the speed and the efficiency of signal transmission can be greatly improved.
It should be further noted that, here, the multiple parallel signals are similar to the M parallel signals in the previous embodiment, and multiple refers to that the number of electrical signals transmitted simultaneously is greater than 1.
In some embodiments, since the positions of the first fec module 14 and the signal packaging module 15 may be reversed, there are two direct and indirect connection manners between the signal splitting module 16 and the first fec module 14. Specifically, as shown in fig. 9, when the first fec module 14 and the signal packaging module 15 are connected in the manner shown in fig. 7, the output terminal of the signal splitting module 16 is directly connected to the input terminal of the first fec module 14; as shown in fig. 10, when the first forward error correction module 14 is connected to the signal packaging module 15 in the manner shown in fig. 8, the output of the signal splitting module 16 is indirectly connected to the input of the first forward error correction module 14.
Specifically, the first alignment signal has multiple frequency band signals, and after being split by the signal splitting module 16, the multiple frequency band signals are output as multiple parallel signals separated into a single frequency band.
Similar to the previous embodiment, the size of the data block to be processed by the first fec module of each parallel signal is limited by the processing capability of the first fec module 14, and still assuming that the first fec module 14 is capable of processing 16 signals, and each path needs m bits of signal data, the total amount of signal data that the first fec module 14 can process is 16m bits of data, so that the total amount of data required for the plurality of parallel signals is also 16m bits, and the number of signal paths that the first fec module 14 can process determines the number of paths of the multiple parallel signals formed by the signal splitting module 16.
Based on the signaling module shown in fig. 9 and 10, the present disclosure further provides a signaling method as follows, including:
acquiring a first signal from a source terminal;
the first signal parameter judging module 11 analyzes the first signal to identify a first signal channel number and a first code element rate;
the first signal alignment module 13 aligns the first signal from M serial signals to M parallel signals;
the signal splitting module 16 splits the M parallel signals according to the first number of signal channels and the first symbol rate to form S1 parallel signals; wherein S1 is more than M, S1 is a positive integer;
the first forward error correction module 14 generates an error correction code through a forward error correction coding technology according to the S1-path parallel signal;
the signal packaging module 15 packages the signal to be modulated and the error correction code to form a first data packet by taking the S1-path parallel signal as a signal to be modulated, and adds the first signal channel number and the first code element rate to the packet header information of the first data packet;
the PAM-N modulation module 12 modulates the packetized signal to be modulated by the determined modulation mode to obtain a second signal.
In the foregoing signal transmission process, M represents the number of channels of the first signal, that is, the number of channels used by the source end to provide the first signal.
Compared with the signal transmission method corresponding to the signal transmission module shown in fig. 7 and 8, the signal transmission method corresponding to the signal transmission module shown in fig. 9 and 10 performs signal splitting after the alignment step, so as to form an S1-path parallel signal, and it should be noted that, similarly to M, the value of S1 is limited by the processing capability of the first forward error correction module 14, which is described in detail in the embodiment shown in fig. 7 and is not repeated here.
Some embodiments of the present disclosure improve upon the signal receiving module 20 of fig. 3 in adaptation to the signaling modules provided by the previous embodiments.
Some embodiments of the present disclosure provide a signal receiving module as shown in fig. 11, which is added with a signal unpacking module 22 and a signal demultiplexing module 23 on the basis of the signal receiving module 20 of fig. 3, wherein an input end of the signal unpacking module 22 is connected with an output end of the PAM-N demodulation module 21, an output end of the signal unpacking module 22 is connected with an input end of the signal demultiplexing module 23, and an output end of the signal demultiplexing module 23 is used for connecting with a receiving end.
The PAM-N demodulation module 21 receives and demodulates the second signal transmitted by the signal transmission cable, so as to obtain a second data packet, the signal unpacking module 22 receives the second data packet, reads header information of the second data packet to obtain a first signal channel number and a first symbol rate, decodes the second data packet into unpacked signals according to the first signal channel number and the first symbol rate, inputs the unpacked signals into the signal demultiplexing module 23, and the signal demultiplexing module 23 takes the unpacked signals as signals to be multiplexed according to the first signal channel number and the first symbol rate, multiplexes the signals to be multiplexed onto corresponding signal lines having the same number as the first signal channel number, so as to form first signals, and transmits the first signals at the first symbol rate on the corresponding signal lines.
It should be further noted that, in the signal multiplexing process, the channel where each signal is located in the signal receiving module is in one-to-one correspondence with the channel where each signal is located in the signal transmitting module, so that the signal demultiplexing module 23 needs to perform the signal multiplexing process under the control of the second signal parameter determining module, where the second signal parameter determining module provides the channel information of the first signal including the first signal channel number.
Based on this, some embodiments of the present disclosure also provide a signal receiving method, which includes the steps of:
obtaining a second signal from the signal transmission cable;
demodulating the second signal by using a PAM-N demodulation module in the signal receiving module to obtain a second data packet;
reading header information of the second data packet to obtain a first signal channel number and a first code element rate;
decoding the second data packet into an unpacked signal by using a signal unpacking module;
multiplexing the de-packetized signal to form a first signal according to the first number of signal channels and the first symbol rate using a signal de-multiplexing module;
the first signal is output to the receiving end.
It will be appreciated that a variety of signal transmission means may be formed in accordance with any of the signal transmission modules 10 shown in fig. 3, 7 to 10 and the signal reception module 20 shown in fig. 11.
With respect to the signaling modules shown in fig. 7 and 8, some embodiments of the present disclosure also provide another adapted signaling module. Fig. 12 shows a schematic structural view of a signal receiving module 20 of other embodiments of the present disclosure.
The signal receiving module shown in fig. 12 is added with a second forward error correction module 24 and a second signal parameter decision module 25 on the basis of the signal receiving module shown in fig. 11. Wherein the input end of the second forward error correction module 24 is connected to the signal unpacking module 22, and is used for performing error correction decoding on the unpacked signal according to the error correction code in the second data packet; the input end of the second signal parameter determining module 25 is connected to the output end of the signal unpacking module 22, the output end of the second signal parameter determining module 25 is connected to the signal unpacking module 23, and is used for identifying the first signal channel number and the first symbol rate from the packet header information read by the signal unpacking module 22, and the signal unpacking module 23 can multiplex the unpacked signal according to the first signal channel number and the first symbol rate under the control of the second signal parameter determining module 25 so as to form a first signal.
The signal transmission device formed by the signal transmission module shown in fig. 7 or fig. 8 and the signal receiving module shown in fig. 12 can complete signal transmission according to the following steps:
Acquiring a first signal from a source terminal;
analyzing the first signal to identify a first number of signal channels and a first symbol rate;
aligning the first signal from M paths of serial signals to M paths of parallel signals;
generating error correction codes through a forward error correction coding technology according to M paths of parallel signals;
m paths of parallel signals are used as signals to be modulated, the signals to be modulated and error correction codes are packed to form a first data packet, and the number of first signal channels and a first code element rate are added to header information of the first data packet;
modulating the packed signal to be modulated through the determined modulation mode to obtain a second signal;
the signal transmission cable transmits the second signal to the signal receiving module;
demodulating a second signal obtained from the signal transmission cable by using a PAM-N demodulation module to obtain a second data packet;
reading header information of the second data packet to obtain a first signal channel number and a first code element rate;
decoding the second data packet into S2 paths of parallel signals, wherein S2 is more than or equal to 1, and S2 is a positive integer;
performing error correction decoding on the S2-path parallel signals according to the error correction code in the second data packet;
and multiplexing the S2 paths of parallel signals after error correction decoding according to the first signal channel number and the first code element rate to form a first signal, wherein the first signal is an M paths of serial signals.
In the signal transmission process, the demodulation mode of the PAM-N demodulation module corresponds to the modulation mode of the PAM-N modulation module on the first signal, specifically, the PAM-N demodulation module adopts the demodulation mode corresponding to the modulation mode of the PAM-N modulation module on the first signal, restores the second signal into the binary signal, and sends the binary signal to the signal unpacking module.
The signal demultiplexing module 23 performs multiplexing actions according to the following steps: the error correction decoded parallel signals are multiplexed onto the same number of corresponding signal lines as the number of the first signal channels to form a first signal, and the first signal is output to the receiving end at a first symbol rate on the corresponding signal lines.
With respect to the signaling modules shown in fig. 9 and 10, some embodiments of the present disclosure also provide another adapted signaling module. Fig. 13 shows a schematic structural view of a signal receiving module 20 of further embodiments of the present disclosure.
The signal receiving module shown in fig. 13 is further added with a second signal alignment module 26 on the basis of the signal receiving module shown in fig. 12, an input end of the second signal alignment module is connected with an output end of the signal unpacking module, and an output end of the second signal alignment module is connected with an input end of the second forward error correction module, so that multiple parallel signals output by the signal unpacking module are aligned in time.
Because the signal splitting module in the signal sending module outputs multiple parallel signals, the multiple parallel signals may not arrive at the signal receiving module at the same time based on errors or other reasons, in order to eliminate the deviation of the arrival time, so that the second forward error correction module performs error correction decoding and the signal demultiplexing module completes signal multiplexing, a second signal alignment module needs to be set to align multiple parallel signals in the signal receiving module in time.
In this case, the second forward error correction module is configured to perform error correction decoding on the aligned multiple parallel signals according to the error correction code in the second data packet, and the signal demultiplexing module is configured to use the error correction decoded multiple parallel signals as signals to be multiplexed.
The signal transmission device formed by the signal transmission module shown in fig. 9 or 10 and the signal reception module shown in fig. 13 can complete signal transmission according to the following steps:
acquiring a first signal from a source terminal;
analyzing the first signal to identify a first number of signal channels and a first symbol rate;
aligning the first signal from M paths of serial signals to M paths of parallel signals;
splitting M paths of parallel signals according to the first signal channel number and the first code element rate to form S1 paths of parallel signals;
Generating error correction codes through a forward error correction coding technology according to the S1-path parallel signals;
taking the S1-path parallel signals as signals to be modulated, packaging the signals to be modulated and error correction codes to form a first data packet, and adding the number of first signal channels and a first code element rate to the packet header information of the first data packet;
modulating the packed signal to be modulated through the determined modulation mode to obtain a second signal;
the signal transmission cable transmits the second signal to the signal receiving module;
demodulating a second signal obtained from the signal transmission cable by using a PAM-N demodulation module to obtain a second data packet;
reading header information of the second data packet to obtain a first signal channel number and a first code element rate;
decoding the second data packet into an S2-way parallel signal;
aligning S2 paths of parallel signals;
performing error correction decoding on the aligned S2 paths of parallel signals according to the error correction code in the second data packet;
and multiplexing the S2 paths of parallel signals after error correction decoding according to the first signal channel number and the first code element rate to form a first signal.
It should be noted that, in the above signal receiving process, the value of S2 in the S2-path parallel signal depends on the number of signal paths that can be processed by the second forward error correction module, and the S2-path parallel signal after error correction decoding is processed by the signal demultiplexing module and still aligned in time when transmitted on the signal line.
It should be further noted that, in the process of performing signal transmission by the signal transmission device formed by the signal transmission module shown in fig. 9 or fig. 10 and the signal receiving module shown in fig. 13, the value of S1 is equal to the value of S2, that is, the number of signal paths that can be processed by the first forward error correction module in the signal transmission module is the same as the number of signal paths that can be processed by the second forward error correction module.
According to the signal transmission device shown in fig. 6, it can be known that in practical application, the signal transmission cable may include a plurality of fiber cores, that is, the second signal may be transmitted through the plurality of fiber cores at the same time. It should be noted that, in practical application, the core may be made of copper wire.
For ease of understanding, one embodiment of the present disclosure will be described with reference to the signal transmission device shown in fig. 14 by taking 16 parallel signals as an example. Fig. 14 shows a schematic structural view of a signal transmission device according to other embodiments of the present disclosure.
The signal transmission device shown in fig. 14 is configured based on the signal transmission module shown in fig. 9 and the signal reception module shown in fig. 13.
In the signal transmission device shown in fig. 14, the signal transmission cable 30 includes a plurality of fiber cores 31, the signal transmission module 10 includes a plurality of signal packaging modules 15 and a plurality of PAM-N modulation modules 12, where the signal packaging modules and the PAM-N modulation modules are in one-to-one correspondence, and an output end of each of the plurality of signal packaging modules is connected to an input end of the PAM-N modulation module corresponding thereto; suitably, the signal receiving module 20 comprises a plurality of PAM-N demodulation modules 21 and a plurality of signal unpacking modules 22; the PAM-N demodulation modules 21, the signal unpacking modules 22 and the fiber cores 31 are in one-to-one correspondence, the input ends of the PAM-N demodulation modules are respectively connected with the corresponding fiber cores, the output ends of the PAM-N demodulation modules are respectively connected with the corresponding signal unpacking modules, and the output ends of the signal unpacking modules are respectively connected with the input ends of the second signal parameter judging module.
In the signal transmitting module of fig. 14, the signal splitting module outputs 16 parallel signals to the first forward error correction module 14, after generating an error correction code of the 16 parallel signals, 8 parallel signals and the error correction code thereof are input to one signal packing module 15, and the other 8 parallel signals and the error correction code thereof are input to the other signal packing module 15, so as to form two first data packets, and the two first data packets are transmitted to the signal receiving module via different fiber cores, one group of PAM-N demodulating modules 21 and the signal unpacking module 22 in the signal receiving module demodulates and unpacks one of the first data packets, the other group of PAM-N demodulating modules 21 and the signal unpacking module 22 demodulates and unpacks the other first data packet, and a plurality of unpacking signals are further obtained on the basis of obtaining a plurality of second data packets.
According to the signal transmission device and the corresponding signal transmission method thereof shown in any of the foregoing embodiments, a set of signal transmission modules and signal receiving modules used in cooperation with each other, and their respective signal transmission methods and signal receiving methods can be split.
It should be further noted that the split signal transmitting module may be used in combination with other signal receiving modules, and similarly, the split signal receiving module may also form another signal transmission device with other signal transmitting modules.
While various embodiments of the present disclosure have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous modifications, changes, and substitutions will occur to those skilled in the art without departing from the spirit and scope of the present disclosure. It should be understood that various alternatives to the embodiments of the disclosure described herein may be employed in practicing the disclosure. The appended claims are intended to define the scope of the disclosure and are therefore to cover all equivalents or alternatives falling within the scope of these claims.

Claims (16)

1. A signal transmission method, comprising:
acquiring a first signal from a source terminal;
analyzing the first signal to identify a first signal channel number and a first code element rate; the first signal channel number is the signal channel number provided by the source end, and the first code element rate is the code element rate of the first signal;
for a pair ofSolving to obtain a modulation mode number N; wherein n represents the first number of signal channels;
determining a modulation mode corresponding to the modulation mode number N;
Modulating the packed first signal in the determined modulation mode to obtain a second signal; the packet header information of the packed first signal includes the first signal channel number and the first code element rate, and the signal channel number of the second signal is smaller than the first signal channel number.
2. The signal transmission method according to claim 1, wherein the parsing step includes, after:
an alignment step, namely aligning the first signal into M paths of parallel signals from M paths of serial signals, wherein M is a positive integer;
generating error correction codes through a forward error correction coding technology according to the M paths of parallel signals;
the M paths of parallel signals are used as signals to be modulated, the signals to be modulated and the error correction codes are packaged to form a first data packet, and the first signal channel number and the first code element rate are added to header information of the first data packet;
the modulating the first signal with the determined modulation mode to obtain a second signal includes:
and modulating the packed signal to be modulated through the determined modulation mode to obtain the second signal.
3. The signal transmission method according to claim 2, wherein,
The alignment step is followed by: splitting the M paths of parallel signals according to the first signal channel number and the first code element rate to form S1 paths of parallel signals, wherein S1 is larger than M, and S1 is a positive integer;
the error correction code generation step includes: generating error correction codes through a forward error correction coding technology according to the S1-path parallel signals;
the packaging step comprises the following steps: and taking the S1-path parallel signal as a signal to be modulated, packaging the signal to be modulated and the error correction code to form a first data packet, and adding the first signal channel number and the first code element rate to the packet head information of the first data packet.
4. The signal transmission method according to claim 1, wherein the parsing step includes:
taking the number of channels with level change of signals in a source end channel as the number of first signal channels;
the rate of change of the level of the signal in the signal line is taken as the symbol rate corresponding to the current signal line.
5. The signal transmission method according to claim 2, wherein the packing step includes:
packaging the signal to be modulated and the error correction code to form the first data packet;
inserting header information in a fixed format at a fixed position of the first data packet; the header information of the first data packet includes: the first number of signal channels and the first symbol rate.
6. A method of signal transmission, comprising:
acquiring a first signal from a source terminal;
the signal sending module modulates the first signal to obtain a second signal; wherein, the signal sending module includes: the system comprises a first signal parameter judging module and a PAM-N modulation module, wherein the input end of the first signal parameter judging module is used for being connected with a source end, and the first signal parameter judging module is used for receiving a first signal provided by the source end so as to identify a first signal channel number and a first code element rate; the first signal channel number is the signal channel number provided by the source end, and the first code element rate is the code element rate of the first signal; the PAM-N modulation module is connected with the first signal parameter judgment module and is used for carrying out the following steps ofSolving to obtain a modulation mode number N, and modulating the packed first signal according to a modulation mode corresponding to the modulation mode number N to obtain a second signal, wherein N represents the number of the first signal channels, and the packet header information of the packed first signal comprises the number of the first signal channels and the first code element rate;
the signal transmission cable transmits the second signal to the signal receiving module;
The signal receiving module demodulates the second signal by adopting a demodulation mode corresponding to a modulation mode number N according to the first signal channel number and the first code element rate in the packet header information so as to obtain the first signal;
and outputting the first signal to a receiving end.
7. The method of claim 6, wherein modulating the first signal to obtain the second signal comprises:
analyzing the first signal to identify the first signal channel number and the first code element rate;
modulating the first signal to obtain the second signal; the number of signal channels of the second signal is smaller than or equal to the number of the first signal channels.
8. The method of claim 6, wherein modulating the first signal to obtain the second signal comprises:
analyzing the first signal to identify the first signal channel number and the first code element rate;
aligning the first signal from M paths of serial signals into M paths of parallel signals, wherein M is a positive integer;
generating error correction codes through a forward error correction coding technology according to the M paths of parallel signals;
The M paths of parallel signals are used as signals to be modulated, the signals to be modulated and the error correction codes are packaged to form a first data packet, and the first signal channel number and the first code element rate are added to header information of the first data packet;
determining a modulation mode of the PAM-N modulation module according to the first number of signal channels and the first symbol rate;
modulating the packed signal to be modulated in the determined modulation mode to obtain the second signal; the number of signal channels of the second signal is smaller than that of the first signal channels.
9. The signal transmission method according to claim 8, wherein,
the alignment step is followed by: splitting the M paths of parallel signals according to the first signal channel number and the first code element rate to form S1 paths of parallel signals, wherein S1 is larger than M, and S1 is a positive integer;
the error correction code generation step includes: generating error correction codes through a forward error correction coding technology according to the S1-path parallel signals;
the packaging step comprises the following steps: and taking the S1-path parallel signal as a signal to be modulated, packaging the signal to be modulated and the error correction code to form a first data packet, and adding the first signal channel number and the first code element rate to the packet head information of the first data packet.
10. The signal transmission method according to claim 7, wherein demodulating the second signal to obtain the first signal comprises:
demodulating a second signal obtained from the signal transmission cable by using a PAM-N demodulation module to obtain a second data packet; the demodulation mode of the PAM-N demodulation module corresponds to the modulation mode of the first signal by the PAM-N modulation module;
reading header information of the second data packet to obtain the first signal channel number and the first symbol rate;
decoding the second data packet into S2 paths of parallel signals; s2 is more than or equal to 1, and S2 is a positive integer;
performing error correction decoding on the S2-path parallel signals according to the error correction code in the second data packet;
and multiplexing the S2 paths of parallel signals after error correction decoding according to the first signal channel number and the first code element rate to form the first signal, wherein the first signal is M paths of serial signals.
11. The signal transmission method according to claim 8, wherein demodulating the second signal to obtain the first signal comprises:
demodulating a second signal obtained from the signal transmission cable by using a PAM-N demodulation module to obtain a second data packet; the demodulation mode of the PAM-N demodulation module corresponds to the modulation mode of the first signal by the PAM-N modulation module;
Reading header information of the second data packet to obtain the first signal channel number and the first symbol rate;
decoding the second data packet into S2 paths of parallel signals; s2 is more than or equal to 1, and S2 is a positive integer;
aligning S2 paths of parallel signals;
performing error correction decoding on the aligned S2 paths of parallel signals according to the error correction code in the second data packet;
and multiplexing the S2 paths of parallel signals after error correction decoding according to the first signal channel number and the first code element rate to form the first signal.
12. The signal transmission method according to claim 11, wherein demodulating the second signal obtained from the signal transmission cable with the PAM-N demodulation module to obtain the second data packet comprises:
and recovering the second signal into a binary signal by adopting a demodulation mode corresponding to the modulation mode of the first signal in the PAM-N modulation module, and sending the binary signal to a signal unpacking module.
13. The signal transmission method according to claim 10 or 11, wherein the multiplexing step includes:
and multiplexing the parallel signals after error correction decoding to the corresponding signal lines with the same number as the first signal channels to form the first signals, and outputting the first signals to a receiving end at the first symbol rate on the corresponding signal lines.
14. A signal receiving method, comprising:
obtaining a second signal from the signal transmission cable, wherein the second signal is obtained by modulating the first signal by a PAM-N modulation module in a modulation mode corresponding to a modulation mode number N, and the modulation mode number N is according toSolving to obtain;
demodulating the second signal by using a signal receiving module according to the first signal channel number and the first code element rate in the packet header information by adopting a demodulation mode corresponding to a modulation mode number N so as to obtain a second data packet;
reading header information of the second data packet to obtain a first signal channel number and a first code element rate;
decoding the second data packet into an unpacking signal;
multiplexing the unpacked signal according to the first signal channel number and the first symbol rate to form the first signal;
and outputting the first signal to a receiving end.
15. The signal receiving method of claim 14, wherein,
the unpacking signal is M paths of parallel signals, and M is a positive integer;
after decoding the second data packet into an unpacked signal, the method includes:
performing error correction decoding on the M paths of parallel signals according to the error correction code in the first data packet;
The multiplexing the unpacked signal according to the first signal channel number and the first symbol rate to form the first signal includes:
and according to the first signal channel number and the first code element rate, multiplexing M paths of error correction decoded parallel signals onto corresponding signal lines with the same number as the first signal channel number to form the first signal, and outputting the first signal to a receiving end on the corresponding signal lines at the first code element rate.
16. The signal receiving method of claim 14, wherein,
the unpacking signal is an S2-path parallel signal, S2 is more than or equal to 1, and S2 is a positive integer;
after decoding the second data packet into an unpacked signal, the method includes:
aligning the S2 paths of parallel signals;
performing error correction decoding on the aligned S2 paths of parallel signals according to the error correction code in the first data packet;
the multiplexing the unpacked signal according to the first signal channel number and the first symbol rate to form the first signal includes:
and according to the first signal channel number and the first code element rate, multiplexing the S2 paths of parallel signals after error correction decoding onto corresponding signal lines with the same number as the first signal channel number to form the first signals, and outputting the first signals to a receiving end on the corresponding signal lines at the first code element rate.
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