CN107196711A - The method and device of signal transmission - Google Patents
The method and device of signal transmission Download PDFInfo
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- CN107196711A CN107196711A CN201710300306.2A CN201710300306A CN107196711A CN 107196711 A CN107196711 A CN 107196711A CN 201710300306 A CN201710300306 A CN 201710300306A CN 107196711 A CN107196711 A CN 107196711A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
Abstract
The embodiment of the present application discloses a kind of method and device of signal transmission, and this method includes：Via node obtains the first signal to be forwarded and the secondary signal itself produced, is overlapped processing to the first signal and secondary signal according to default superposition rule, obtains the first superposed signal；Via node sends the first superposed signal by the first channel to destination node；Destination node receives the second superposed signal that the first superposed signal is developed by the first channel；Destination node is demodulated processing according to default demodulation rule to the second superposed signal, obtains demodulated signal corresponding with the first signal, and demodulated signal corresponding with secondary signal.The embodiment of the present application can be by sending the superposed signal obtained based on the first signal to be forwarded and the secondary signal itself produced, to realize the multi signal transmission based on a channel, so as to improve the utilization rate of via node channel resource to destination node.
Description
Technical field
The application is related to communication technical field, more particularly to the method and device that a kind of signal is transmitted.
Background technology
In light relay system, it can typically include source node, via node and destination node, wherein, source node can
To realize the communication with destination node by via node.Specifically, source node need to will can be sent to the letter of destination node
Number first send to via node, via node can receive the signal, and the signal is forwarded into destination node.
Via node can also send the signal of itself generation to destination node forward signal to destination node.
In correlation technique, via node can be realized by multiple access technique both forwards letter in the same time to same destination node
Number, the signal of itself generation is sent again.
After studying correlation technique, inventor has found, in correlation technique, and via node needs to take two channels
To realize in the same time to same destination node both forward signal, the signal of itself generation is sent again, it follows that related skill
Art is low to the utilization rate for relaying node channel resource.
The content of the invention
The purpose of the embodiment of the present application is to provide a kind of method and device of signal transmission, to improve via node channel
The utilization rate of resource.
In order to solve the above technical problems, what the embodiment of the present application was realized in：
The embodiment of the present application provides a kind of method of signal transmission, and methods described includes：
The via node obtains the first signal to be forwarded and the secondary signal itself produced, according to default superposition
Rule is overlapped processing to first signal and the secondary signal, obtains the first superposed signal；
The via node sends first superposed signal by first channel to the destination node；
The destination node receives the second superposition letter that first superposed signal is developed by first channel
Number；
The destination node is demodulated processing according to default demodulation rule to second superposed signal, obtains and institute
State the corresponding demodulated signal of the first signal, and demodulated signal corresponding with the secondary signal.
The embodiment of the present application provides a kind of device of signal transmission, and described device is included applied to the folded of the via node
Plus module, sending module, and the receiving module applied to the destination node, demodulation module：
The laminating module, first signal to be forwarded for obtaining and the secondary signal itself produced, according to default
Superposition rule processing is overlapped to first signal and the secondary signal, obtain the first superposed signal；
The sending module, for sending first superposed signal to the destination node by first channel；
The receiving module, is folded for receiving first superposed signal is developed by first channel second
Plus signal；
The demodulation module, for being demodulated processing to second superposed signal according to default demodulation rule, is obtained
To demodulated signal corresponding with first signal, and demodulated signal corresponding with the secondary signal.
In the technical scheme provided from above the embodiment of the present application, the embodiment of the present application, via node can be obtained
First signal to be forwarded and the secondary signal itself produced, and according to default superposition rule to the first signal and second
Signal is overlapped processing, obtains the first superposed signal, then, via node can by itself between destination node
One channel sends the first superposed signal to destination node, and destination node can receive the first superposed signal and spread out by the first channel
The second superposed signal become, and processing is demodulated to the second superposed signal according to default demodulation rule, obtain and first
The corresponding demodulated signal of signal, and demodulated signal corresponding with secondary signal.The embodiment of the present application can be by purpose section
Point sends the superposed signal obtained based on the first signal to be forwarded and the secondary signal itself produced, to realize based on one
The multi signal transmission of channel, so as to improve the utilization rate of via node channel resource.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments described in application, for those of ordinary skill in the art, are not paying the premise of creative labor
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of embodiment of the method for signal transmission of the application；
Fig. 2 is the schematic diagram of a light relay system shown in the application；
Fig. 3 is the embodiment of the method for another signal transmission of the application；
Fig. 4 is a kind of device embodiment of signal transmission of the application；
Fig. 5 is the device embodiment of another signal transmission of the application；
Fig. 6 is a kind of apparatus embodiments of signal transmission of the application.
Embodiment
The embodiment of the present application provides a kind of method and device of signal transmission.
In order that those skilled in the art more fully understand the technical scheme in the application, it is real below in conjunction with the application
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described implementation
Example only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to the application protection
Scope.
Embodiment one
As shown in figure 1, the application provides a kind of embodiment of the method for signal transmission, for improving via node channel resource
Utilization rate.The embodiment of the present application can by destination node send based on the first signal to be forwarded and itself produce
The superposed signal that secondary signal is obtained, to realize the multi signal transmission based on a channel, so as to improve via node channel
The utilization rate of resource.This method specifically includes following steps：
In a step 101：Via node obtains the first signal to be forwarded and the secondary signal itself produced, according to pre-
If superposition rule processing is overlapped to the first signal and secondary signal, obtain the first superposed signal.
Fig. 2 is referred to, for the schematic diagram of the light relay system shown.In Fig. 2, between source node and via node,
It can be communicated between via node and destination node by corresponding channel, for example, can between source node and via node
To be communicated by channel 1；Can be communicated between via node and destination node by channel 2, wherein, source node with
It can be communicated between destination node by via node.
Specifically, source node can send the signal of itself generation by channel 1 to via node, wherein, the signal can
Think signal 1.Via node can receive the signal 2 that signal 1 develops by channel 1.It should be noted that due to signal
1 in channel 1 can by some factors, such as with the corresponding channel coefficients of channel 1, the power coefficient of signal 1, and with letter
The influence of number 1 corresponding white Gaussian noise, therefore, the signal 1 that the signal 2 that via node is received is sent with source node can not phase
Together.Via node can be demodulated processing to the signal 2 of reception, obtain default first with the corresponding bit error rate of signal 1
In the range of demodulated signal, wherein, the demodulated signal can be signal 3, and signal 3 can produce with infinite approach source node in theory
The signal 1 given birth to and sent.
Via node, can be by channel 2 to destination node forward signal 3 after signal 3 is obtained.Destination node can connect
The signals 4 that the collection of letters number 3 is developed by channel 2, and processing is demodulated to the signal 4 of reception, obtain corresponding with signal 3
Demodulated signal of the bit error rate in the second preset range, wherein, the demodulated signal can be signal 5, and signal 5 in theory may be used
The signal 3 forwarded with infinite approach via node.
It should be noted that the first preset range be able to can also be differed, the present embodiment with the second preset range with identical
It is without limitation.The value of first preset range and/or the second preset range can be the acquiescence value of corresponding device, also may be used
Think the self-defining value of related personnel, the present embodiment is not limited equally to this.
Because the signal 5 that destination node is obtained can be in the second preset range content with the corresponding bit error rate of signal 3
Demodulated signal, and via node forwarding signal 3 can be with the corresponding bit error rate of signal 1 in the first preset range
Demodulated signal, hence, it can be determined that the signal 5 that destination node is obtained can be pre- the 3rd with the corresponding bit error rate of signal 1
If the demodulated signal in scope, now, the signal that the signal 5 that destination node is obtained can be produced and sent with infinite approach source node
1.It follows that can be communicated between source node and destination node by via node.
It should be noted that the 3rd preset range can be identical with the first preset range or the second preset range, can also
Differed with the first preset range or the second preset range, the present embodiment is without limitation.The value of 3rd preset range can
Think the acquiescence value of corresponding device, or the self-defining value of related personnel, the present embodiment is not limited equally to this.
In one example, the 3rd preset range can be more than the first preset range, and/or the second preset range.
Via node can also produce signal with forward signal, and send its to destination node by channel 2 and produce
Signal, wherein, the signal can be signal 6, destination node can receive signal 6 by channel 2 signal 7 that develops,
After being demodulated to the signal 7 of reception, destination node can be obtained with the corresponding bit error rate of signal 6 in the 4th preset range
Interior demodulated signal, wherein, the demodulated signal can be signal 8, and signal 8 can be produced with infinite approach via node in theory
And the signal 6 sent.It follows that the signal that can be produced between via node and destination node based on via node is led to
Letter.
It should be noted that the 4th preset range can be with the default model of the first preset range, the second preset range or the 3rd
Enclose identical, can also be differed with the first preset range, the second preset range or the 3rd preset range, the present embodiment is not done to this
Limitation.The value of 4th preset range can be the acquiescence value of corresponding device, or the self-defining value of related personnel, this
Embodiment is not limited equally to this.
Fig. 2 can be only the schematic diagram of a light relay system shown in the application, be not limited to the application.
In the present embodiment, via node can obtain the first signal to be forwarded and the secondary signal itself produced,
It is then possible to be overlapped processing to the first signal and secondary signal according to default superposition rule, the first superposition letter is obtained
Number.
In one embodiment, via node can receive the signal that corresponding source node is sent, and the letter based on reception
Number obtain the first signal to be forwarded.
In one embodiment, source node can produce signal, wherein, the signal can be the 3rd signal.Source node can
With by itself channel between via node, for example, second channel, the 3rd letter of itself generation is sent to via node
Number.Via node can receive the 4th signal that the 3rd signal develops by second channel, and to the 4th signal of reception
Processing is demodulated, the first signal to be forwarded is obtained.Wherein, the first signal to be forwarded can be corresponding with the 3rd signal
Demodulated signal of the bit error rate in the first preset range, the first signal to be forwarded in theory can be with infinite approach source node
The 3rd signal sent.
In one embodiment, via node can obtain the channel coefficients of second channel, and the 3rd signal power
Coefficient, wherein, via node can obtain the channel coefficients of second channel from default channel coefficients, and pass through the second letter
Road obtains the power coefficient for the 3rd signal that source node is determined.Obtaining the channel coefficients of second channel, and the 3rd signal
After power coefficient, via node can the channel coefficients based on second channel, and the power coefficient of the 3rd signal come realize by
4th signal is demodulated into the demodulating process of the first signal.
In one example, as shown in Fig. 2 the 3rd signal that source node is produced can be x3, source node can pass through
Two channels send the 3rd signal x of itself generation to via node3, the 3rd signal x3Can be by the second letter in second channel
The channel coefficients h in road2, the power coefficient g of itself3And white Gaussian noise n corresponding with itself3Influence, therefore, relaying section
Point is receiving the 3rd signal x3The 4th signal x developed by second channel4When, the 4th signal x of reception4Can be：
x4=h2×g3×x3+n3
Via node is receiving the 4th signal x4Afterwards, can be to the 4th signal x4Processing is demodulated, to be forwarded is obtained
One signal x1.Wherein, the first signal x1Can be and the 3rd signal x3Demodulation of the corresponding bit error rate in the first preset range
Signal, the first signal x1In theory can be with the signal x of infinite approach the 3rd3。
In one example, as shown in Fig. 2 the channel for the second channel that via node is obtained from default channel coefficients
Coefficient can be h2, the power coefficient for the 3rd signal that the source node obtained by second channel is determined can be g3, via node
Can the channel coefficients h based on second channel2, and the 3rd signal power coefficient g3To realize the 4th signal x4It is demodulated into
First signal x1Demodulating process, wherein, the first signal x of demodulation1Can be：
In the present embodiment, via node can produce signal, wherein, the signal that via node itself is produced can be the
Binary signal.In one example, as shown in Fig. 2 the secondary signal that via node is produced can be x2。
After the first signal to be forwarded and the secondary signal itself produced is obtained, via node can determine the first letter
Number power coefficient, and secondary signal power coefficient.
In one embodiment, via node can determine the first signal and secondary signal from default power coefficient
Power coefficient, the power coefficient of the first signal and secondary signal can also be determined according to the signal power coefficient of acquiescence,
Because via node determines that the technology of the first signal and secondary signal power coefficient is prior art, therefore the present embodiment is herein not
Repeat again.
It should be noted that the power coefficient for the first signal that via node is determined and the power coefficient of secondary signal can be with
Differ.
In one example, as shown in Fig. 2 the first signal x that via node is determined1Power coefficient can be g1, relaying
The secondary signal x that node is determined2Power coefficient can be g2, wherein, g1With g2It can differ.
In the present embodiment, after the power coefficient and the power coefficient of secondary signal that the first signal is determined, relaying
Power coefficient and the power coefficient of secondary signal that node can be based on the first signal, enter to the first signal and secondary signal
Row overlap-add procedure, obtains the first superposed signal.
In one example, as shown in Fig. 2 the first signal x is being determined1Power coefficient g1, and secondary signal x2's
Power coefficient g2Afterwards, via node can be based on power coefficient g1And g2, to the first signal x1And secondary signal x2Folded
Plus processing, obtain the first superposed signal xx1, wherein, the first superposed signal xx1Can be：
xx1=g1×x1+g2×x2
In step s 102：Via node sends the first superposed signal by the first channel to destination node.
In step s 103：Destination node receives the second superposition letter that the first superposed signal is developed by the first channel
Number.
After the first superposed signal is determined, via node can by itself channel between destination node, for example,
First channel, the first superposed signal is sent to destination node.Destination node can receive the first superposed signal by the first channel
And the second superposed signal developed.
In one example, as shown in Fig. 2 via node can be superimposed by the first channel to destination node transmission first
Signal xx1, the first superposed signal xx1In the first channel can by the first channel channel coefficients h1And it is corresponding with itself
White Gaussian noise n11Influence, therefore, destination node receive the first superposed signal xx1Develop by the first channel
Second superposed signal xx2When, the second superposed signal xx of reception2Can be：
xx2=h1×xx1+n11
In step S104：Destination node is demodulated processing according to default demodulation rule to the second superposed signal, obtains
To demodulated signal corresponding with the first signal, and demodulated signal corresponding with secondary signal.
In one embodiment, destination node is after the second superposed signal is received, can based on the second superposed signal and
The channel coefficients of first channel determine the maximum likelihood algorithm of the first superposed signal.
In one example, as shown in Fig. 2 destination node is based on the second superposed signal xx2, and the first channel channel
Coefficient h1The maximum likelihood algorithm of the first superposed signal determined can be：
Wherein,It can be used to indicate that the maximum likelihood decision threshold value of the first superposed signal.
It is determined that after the maximum likelihood algorithm of the first superposed signal, destination node can the power coefficient based on the first signal
And the power coefficient of secondary signal, determine the corresponding maximum likelihood decision threshold value of the first superposed signal.Wherein, destination node
The power coefficient and the power coefficient of secondary signal of the first signal of via node determination can be obtained by the first channel.
In one example, as shown in Fig. 2 it is determined that the first superposed signal xx1Maximum likelihood algorithm after, destination node
The power coefficient g of the first signal based on acquisition1, and secondary signal power coefficient g2The the first superposed signal xx determined1It is right
The maximum likelihood decision threshold value answeredCan be 0, g1、g2Or g1+g2。
It is determined that after the corresponding maximum likelihood decision threshold value of the first superposed signal, destination node can be based on the first superposition
The corresponding maximum likelihood decision threshold value of signal, processing is demodulated to the second superposed signal, obtains corresponding with the first signal
Demodulated signal, and demodulated signal corresponding with secondary signal.Wherein, demodulated signal corresponding with the first signal can be and the
Demodulated signal of the corresponding bit error rate of one signal in the 3rd preset range, the corresponding demodulated signal can be with infinite approach
One signal；Demodulated signal corresponding with secondary signal can be bit error rate corresponding with secondary signal in the 3rd preset range
Demodulated signal, the corresponding demodulated signal can be with infinite approach secondary signal.
In one example, as shown in Fig. 2 the first superposed signal xx that destination node is determined1Corresponding maximum likelihood is sentenced
Certainly threshold valueCan be 0, g1、g2Or g1+g2, then destination node can be based on the maximum likelihood decision threshold valueTo
Two superposed signal xx2Processing is demodulated, is obtained and the first signal x1Corresponding demodulated signalAnd with secondary signal x2It is right
The demodulated signal answeredWherein, demodulated signalAnd demodulated signalCan be respectively：
Wherein, demodulated signalCan be and the first signal x1Demodulation of the corresponding bit error rate in the 3rd preset range
Signal, demodulated signalCan be with the first signal of infinite approach x1；Demodulated signalCan be and secondary signal x2Corresponding errored bit
Demodulated signal of the rate in the 3rd preset range, demodulated signalCan be with infinite approach secondary signal x2。
The present embodiment provides a kind of embodiment of the method for signal transmission, and in the present embodiment, via node can be obtained and treated
First signal of forwarding and the secondary signal itself produced, and the first signal and second are believed according to default superposition rule
Number be overlapped processing, obtain the first superposed signal, then, via node can by itself first between destination node
Channel sends the first superposed signal to destination node, and destination node can receive the first superposed signal and develop by the first channel
Into the second superposed signal, and according to it is default demodulation rule processing is demodulated to the second superposed signal, obtain and first believe
Number corresponding demodulated signal, and demodulated signal corresponding with secondary signal.The present embodiment can be by sending to destination node
Based on the first signal to be forwarded and the obtained superposed signal of secondary signal itself produced, to realize based on channel
Multi signal is transmitted, so as to improve the utilization rate of via node channel resource.
Embodiment two
As shown in figure 3, the application provides the embodiment of the method for another signal transmission, for improving via node channel money
The utilization rate in source.The embodiment of the present application can by the determination of the power coefficient to the multi signal based on same transmission,
On the basis of the utilization rate for improving via node channel resource, realize that the multi signal compared with low bit error rate is transmitted.This method is specific
Comprise the following steps：
In step S301：Via node obtains the first signal to be forwarded and the secondary signal itself produced, according to
Default superposition rule is overlapped processing to the first signal and secondary signal, obtains the first superposed signal.
In step s 302：Via node sends the first superposed signal by the first channel to destination node.
In step S303：Destination node receives the second superposition letter that the first superposed signal is developed by the first channel
Number.
In step s 304：Destination node is demodulated processing according to default demodulation rule to the second superposed signal, obtains
To demodulated signal corresponding with the first signal, and demodulated signal corresponding with secondary signal.
Wherein, step S301 to step S304 content has been described in detail in the above-described embodiments, therefore the present embodiment is herein no longer
Repeat.
In step S305：Destination node obtains the power coefficient of the 3rd signal.
In one embodiment, source node can determine the power coefficient of the 3rd signal, specifically, and source node can be from pre-
If power coefficient in, determine the power coefficient of the 3rd signal.After the power coefficient that source node determines the 3rd signal, purpose section
Point can obtain the power coefficient for the 3rd signal that source node is determined based on via node.Specifically, via node can pass through
Second channel obtains the power coefficient for the 3rd signal that source node is determined, the power coefficient of the 3rd signal is obtained in via node
Afterwards, destination node can obtain the power coefficient for the 3rd signal that via node is obtained by the first channel.
In step S306：Destination node determines the power coefficient of the average error bit rate of itself and the first signal, second
The power coefficient of signal, the power coefficient of the 3rd signal, the channel coefficients of the channel coefficients of the first channel and second channel
Corresponding relation.
In step S307：Destination node is based on above-mentioned corresponding relation, it is determined that specifying the first signal corresponding to performance number
Specified power coefficient, the specified power coefficient of the specified power coefficient of secondary signal and the 3rd signal.
In one example, Fig. 2 is referred to, the average error bit rate of destination node itself can be Pb, secondary signal x2
Bit error rate in first channel can beDemodulated signal corresponding with the first signalFor the 3rd signal x3Errored bit
Rate can beThe then average error bit rate P of destination node itselfbCan be：
Wherein, the 3rd signal x3Bit error rate in second channel can beFirst signal is in the first channel
Bit error rate can beTherefore,Can be：
The then average error bit rate P of destination node itselfbCan be：
Under conditions of high signal/noise ratio, the average error bit rate P of destination node itselfbCan using approximate representation as：
Wherein, ρ can be above-mentioned signal to noise ratio, and Q can be Q functions of the prior art,Can be with infinite approach Pb, because
This, is in the case where specifying performance number, the specified power coefficient of the first signalThe specified power coefficient of secondary signalAnd the 3rd letter
Number specified power coefficientCan be：
It follows that if the first channel and second channel channel coefficients, it is known that if destination node can determine specify work(
The specified work(of the specified power coefficient of the first signal corresponding to rate value, the specified power coefficient of secondary signal and the 3rd signal
Rate coefficient.Wherein, when the power coefficient of the first signal, secondary signal and the 3rd signal is respectively above-mentioned corresponding specified power
During coefficient, the bit error rate for the demodulated signal corresponding with three signals that destination node is demodulated is relatively low.
In one example, specified performance number can be 1, then this specifies performance number to be expressed as：
Then it can be seen from above-mentioned formula, the specified work(for the first signal corresponding to specified performance number 1 that destination node is determined
Rate coefficientThe specified power coefficient of secondary signalAnd the 3rd signal specified power coefficientCan be respectively：
Or
It should be noted that in the present embodiment, step S301 to step S304 can be in step S305 to step S307
Before, can also be after step S305 to step S307, the present embodiment is without limitation.Wherein, if step S301 is extremely walked
Rapid S304 is after step S305 to step S307, then the power coefficient of step S301 signals into step S304 can be step
The specified power coefficient for the signal that S307 is determined.
The method that the application provides a kind of transmission of signal, in the present embodiment, via node can obtain to be forwarded the
One signal and the secondary signal itself produced, and the first signal and secondary signal are folded according to default superposition rule
Plus processing, the first superposed signal is obtained, then, via node can be by itself the first channel between destination node to mesh
Node send the first superposed signal, destination node can receive the first superposed signal by the first channel and develop second
Superposed signal, and processing is demodulated to the second superposed signal according to default demodulation rule, obtain corresponding with the first signal
Demodulated signal, and demodulated signal corresponding with secondary signal, destination node can obtain the 3rd and believe after demodulation function is obtained
Number power coefficient, and determine the power coefficient of the average error bit rate of itself and the first signal, the power coefficient of secondary signal,
The corresponding relation of the channel coefficients of the power coefficient of 3rd signal, the channel coefficients of the first channel and second channel, purpose section
Point can be based on the corresponding relation, it is determined that the specified power coefficient of the first signal corresponding to specified performance number, secondary signal
Specify the specified power coefficient of power coefficient and the 3rd signal.The present embodiment can be by based on the more of same transmission
The determination of the power coefficient of signal, on the basis of the utilization rate of via node channel resource is improved, is realized compared with low bit error rate
Multi signal transmission.
Example three
The method of the signal transmission provided above for the embodiment of the present application, based on same thinking, the embodiment of the present application is also
A kind of device of signal transmission is provided, as shown in Figure 4：
The device of the signal transmission includes laminating module 410, the sending module 420 applied to the via node, with
And receiving module 430, demodulation module 440 applied to the destination node, wherein：
The laminating module 410, first signal to be forwarded for obtaining and the secondary signal itself produced, according to pre-
If superposition rule processing is overlapped to first signal and the secondary signal, obtain the first superposed signal；
The sending module 420, believes for sending first superposition to the destination node by first channel
Number；
The receiving module 430, for receiving first superposed signal is developed by first channel the
Two superposed signals；
The demodulation module 440, for being demodulated processing to second superposed signal according to default demodulation rule,
Obtain demodulated signal corresponding with first signal, and demodulated signal corresponding with the secondary signal.
In the embodiment of the present application, the laminating module 410 can be used for：
Determine the power coefficient of first signal and the power coefficient of the secondary signal；Wherein, first letter
Number power coefficient it is different from the power coefficient of the secondary signal；
The power coefficient of power coefficient and the secondary signal based on first signal to first signal with
And the secondary signal is overlapped processing.
In the embodiment of the present application, the demodulation module 440 can be used for：
Obtain the power coefficient and the power train of the secondary signal for first signal that the via node is determined
Number；
The power coefficient of power coefficient and the secondary signal based on first signal, determines first superposition
The corresponding maximum likelihood decision threshold value of signal；
Based on the corresponding maximum likelihood decision threshold value of first superposed signal, second superposed signal is solved
Mediate reason.
In the present embodiment, the light relay system also includes source node, and the source node passes through with the via node
Second channel is communicated, and the laminating module 410 is further used for：
Receive the 4th signal that the 3rd signal develops by the second channel；Wherein, the 3rd signal is institute
State the signal that source node is sent by the second channel to the via node；
Processing is demodulated to the 4th signal, the first signal to be forwarded is obtained；
Methods described also includes the first determining module 450 applied to the source node, and applied to the purpose section
The acquisition module 460 of point, the second determining module 470 (as shown in Figure 5)：
First determining module 450, the power coefficient for determining the 3rd signal；
The acquisition module 460, for obtaining the 3rd signal that the source node is determined based on the via node
Power coefficient；
Second determining module 470, the power train for determining the average error bit rate of itself and first signal
The power coefficient of several, described secondary signal, the power coefficient of the 3rd signal, the channel coefficients of first channel and institute
State the corresponding relation of the channel coefficients of second channel；And based on the corresponding relation, it is determined that specifying the institute corresponding to performance number
State the specified power of the specified power coefficient of the first signal, the specified power coefficient of the secondary signal and the 3rd signal
Coefficient.
In the present embodiment, if the specified performance number is 1, described the first of the determination of the second determining module 470
The specified power coefficient of the specified power coefficient of signal, the specified power coefficient of the secondary signal and the 3rd signal can
To be respectively：
Or
Wherein,Specified power coefficient, the specified work(of the secondary signal of respectively described first signal
The specified power coefficient of rate coefficient and the 3rd signal；h1、h2Channel coefficients of respectively described first channel and described
The channel coefficients of second channel.
The present embodiment provides a kind of device embodiment of signal transmission, and in the present embodiment, via node can be obtained and treated
First signal of forwarding and the secondary signal itself produced, and the first signal and second are believed according to default superposition rule
Number be overlapped processing, obtain the first superposed signal, then, via node can by itself first between destination node
Channel sends the first superposed signal to destination node, and destination node can receive the first superposed signal and develop by the first channel
Into the second superposed signal, and according to it is default demodulation rule processing is demodulated to the second superposed signal, obtain and first believe
Number corresponding demodulated signal, and demodulated signal corresponding with secondary signal.The present embodiment can be by sending to destination node
Based on the first signal to be forwarded and the obtained superposed signal of secondary signal itself produced, to realize based on channel
Multi signal is transmitted, so as to improve the utilization rate of via node channel resource.
Example IV
Based on same thinking, the embodiment of the present application also provides a kind of apparatus embodiments of signal transmission, as shown in Figure 6.
What the equipment of signal transmission can provide for above-described embodiment is used for terminal device or server that signal is transmitted
Deng.
The equipment of signal transmission can be produced than larger difference because of configuration or performance difference, can include one or one
More than processor 601 and memory 602, one or more storage application programs that can be stored with memory 602 or
Data.Wherein, memory 602 can be of short duration storage or persistently storage.Being stored in the application program of memory 602 can include
One or more modules (diagram is not shown), each module can include the series of computation in the equipment to signal transmission
Machine executable instruction.Further, processor 601 could be arranged to communicate with memory 602, in the equipment that signal is transmitted
Perform the series of computation machine executable instruction in memory 602.Signal transmission equipment can also include one or one with
Upper power supply 603, one or more wired or wireless network interfaces 604, one or more input/output interfaces 605,
One or more keyboards 606.
Specifically in the present embodiment, the equipment of signal transmission includes memory, and one or more program,
One of them or more than one program storage is in memory, and one or more than one program can include one or one
It is individual with upper module, and each module can include the series of computation machine executable instruction in the equipment transmitted to signal, and warp
Configuration is used to carry out following calculating by one or more than one computing device this or more than one program bag to be contained
Machine executable instruction：
The via node obtains the first signal to be forwarded and the secondary signal itself produced, according to default superposition
Rule is overlapped processing to first signal and the secondary signal, obtains the first superposed signal；
The via node sends first superposed signal by first channel to the destination node；
The destination node receives the second superposition letter that first superposed signal is developed by first channel
Number；
The destination node is demodulated processing according to default demodulation rule to second superposed signal, obtains and institute
State the corresponding demodulated signal of the first signal, and demodulated signal corresponding with the secondary signal.
Alternatively, computer executable instructions when executed, can also make the processor：
Determine the power coefficient of first signal and the power coefficient of the secondary signal；Wherein, first letter
Number power coefficient it is different from the power coefficient of the secondary signal；
The power coefficient of power coefficient and the secondary signal based on first signal to first signal with
And the secondary signal is overlapped processing.
Alternatively, computer executable instructions when executed, can also make the processor：
Obtain the power coefficient and the power train of the secondary signal for first signal that the via node is determined
Number；
The power coefficient of power coefficient and the secondary signal based on first signal, determines first superposition
The corresponding maximum likelihood decision threshold value of signal；
Based on the corresponding maximum likelihood decision threshold value of first superposed signal, second superposed signal is solved
Mediate reason.
Alternatively, computer executable instructions when executed, can also make the processor：
Receive the 4th signal that the 3rd signal develops by the second channel；Wherein, the 3rd signal is institute
State the signal that source node is sent by the second channel to the via node；
Processing is demodulated to the 4th signal, the first signal to be forwarded is obtained；
The source node determines the power coefficient of the 3rd signal；
The destination node obtains the power train for the 3rd signal that the source node is determined based on the via node
Number；
The destination node determines power coefficient, second letter of the average error bit rate of itself with first signal
Number power coefficient, the power coefficient of the 3rd signal, the channel coefficients of first channel and the second channel
The corresponding relation of channel coefficients；
The destination node is based on the corresponding relation, it is determined that specifying specifying for first signal corresponding to performance number
The specified power coefficient of power coefficient, the specified power coefficient of the secondary signal and the 3rd signal.
Alternatively, if the specified performance number is 1, the destination node determines described specify based on the corresponding relation
The specified power coefficient of first signal, the specified power coefficient of the secondary signal corresponding to performance number and described
The specified power coefficient of three signals is respectively：
Or
Wherein,Specified power coefficient, the specified work(of the secondary signal of respectively described first signal
The specified power coefficient of rate coefficient and the 3rd signal；h1、h2Channel coefficients of respectively described first channel and described
The channel coefficients of second channel.
The present embodiment provides a kind of apparatus embodiments of signal transmission, and in the present embodiment, via node can be obtained and treated
First signal of forwarding and the secondary signal itself produced, and the first signal and second are believed according to default superposition rule
Number be overlapped processing, obtain the first superposed signal, then, via node can by itself first between destination node
Channel sends the first superposed signal to destination node, and destination node can receive the first superposed signal and develop by the first channel
Into the second superposed signal, and according to it is default demodulation rule processing is demodulated to the second superposed signal, obtain and first believe
Number corresponding demodulated signal, and demodulated signal corresponding with secondary signal.The present embodiment can be by sending to destination node
Based on the first signal to be forwarded and the obtained superposed signal of secondary signal itself produced, to realize based on channel
Multi signal is transmitted, so as to improve the utilization rate of via node channel resource.
In the 1990s, for a technology improvement can clearly distinguish be on hardware improvement (for example,
Improvement to circuit structures such as diode, transistor, switches) or software on improvement (for the improvement of method flow).So
And, with the development of technology, the improvement of current many method flows can be considered as directly improving for hardware circuit.
Designer nearly all obtains corresponding hardware circuit by the way that improved method flow is programmed into hardware circuit.Cause
This, it cannot be said that the improvement of a method flow cannot be realized with hardware entities module.For example, PLD
(Programmable Logic Device, PLD) (such as field programmable gate array (Field Programmable Gate
Array, FPGA)) it is exactly such a integrated circuit, its logic function is determined by user to device programming.By designer
Voluntarily programming comes a digital display circuit " integrated " on a piece of PLD, without asking chip maker to design and make
Special IC chip.Moreover, nowadays, substitution manually makes IC chip, and this programming is also used instead mostly " patrols
Volume compiler (logic compiler) " software realizes that software compiler used is similar when it writes with program development,
And the source code before compiling also write by handy specific programming language, this is referred to as hardware description language
(Hardware Description Language, HDL), and HDL is also not only a kind of, but have many kinds, such as ABEL
(Advanced Boolean Expression Language)、AHDL(Altera Hardware Description
Language)、Confluence、CUPL(Cornell University Programming Language)、HDCal、JHDL
(Java Hardware Description Language)、Lava、Lola、MyHDL、PALASM、RHDL(Ruby
Hardware Description Language) etc., VHDL (Very-High-Speed are most generally used at present
Integrated Circuit Hardware Description Language) and Verilog.Those skilled in the art also should
This understands, it is only necessary to slightly programming in logic and be programmed into method flow in integrated circuit with above-mentioned several hardware description languages,
The hardware circuit for realizing the logical method flow can be just readily available.
Controller can be implemented in any suitable manner, for example, controller can take such as microprocessor or processing
Device and storage can by the computer of the computer readable program code (such as software or firmware) of (micro-) computing device
Read medium, gate, switch, application specific integrated circuit (Application Specific Integrated Circuit,
ASIC), the form of programmable logic controller (PLC) and embedded microcontroller, the example of controller includes but is not limited to following microcontroller
Device：ARC 625D, Atmel AT91SAM, Microchip PIC18F26K20 and Silicone Labs C8051F320, are deposited
Memory controller is also implemented as a part for the control logic of memory.It is also known in the art that except with
Pure computer readable program code mode is realized beyond controller, can be made completely by the way that method and step is carried out into programming in logic
Obtain controller and come real in the form of gate, switch, application specific integrated circuit, programmable logic controller (PLC) and embedded microcontroller etc.
Existing identical function.Therefore this controller is considered a kind of hardware component, and various for realizing to including in it
The device of function can also be considered as the structure in hardware component.Or even, can be by for realizing that the device of various functions is regarded
For that not only can be the software module of implementation method but also can be the structure in hardware component.
System, device, module or unit that above-described embodiment is illustrated, can specifically be realized by computer chip or entity,
Or realized by the product with certain function.It is a kind of typically to realize that equipment is computer.Specifically, computer for example may be used
Think personal computer, laptop computer, cell phone, camera phone, smart phone, personal digital assistant, media play
It is any in device, navigation equipment, electronic mail equipment, game console, tablet PC, wearable device or these equipment
The combination of equipment.
For convenience of description, it is divided into various units during description apparatus above with function to describe respectively.Certainly, this is being implemented
The function of each unit can be realized in same or multiple softwares and/or hardware during application.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the application can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the application can be used in one or more computers for wherein including computer usable program code
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is the flow with reference to method, equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
In a typical configuration, computing device includes one or more processors (CPU), input/output interface, net
Network interface and internal memory.
Internal memory potentially includes the volatile memory in computer-readable medium, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only storage (ROM) or flash memory (flash RAM).Internal memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moved
State random access memory (DRAM), other kinds of random access memory (RAM), read-only storage (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic cassette tape, the storage of tape magnetic rigid disk or other magnetic storage apparatus
Or any other non-transmission medium, the information that can be accessed by a computing device available for storage.Define, calculate according to herein
Machine computer-readable recording medium does not include temporary computer readable media (transitory media), such as data-signal and carrier wave of modulation.
It should also be noted that, term " comprising ", "comprising" or its any other variant are intended to nonexcludability
Comprising so that process, method, commodity or equipment including a series of key elements are not only including those key elements, but also wrap
Include other key elements being not expressly set out, or also include for this process, method, commodity or equipment intrinsic want
Element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that wanted including described
Also there is other identical element in process, method, commodity or the equipment of element.
It will be understood by those skilled in the art that embodiments herein can be provided as method, system or computer program product.
Therefore, the application can be using the embodiment in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Form.Deposited moreover, the application can use to can use in one or more computers for wherein including computer usable program code
The shape for the computer program product that storage media is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
Formula.
The application can be described in the general context of computer executable instructions, such as program
Module.Usually, program module includes performing particular task or realizes routine, program, object, the group of particular abstract data type
Part, data structure etc..The application can also be put into practice in a distributed computing environment, in these DCEs, by
Remote processing devices connected by communication network perform task.In a distributed computing environment, program module can be with
Positioned at including in the local and remote computer-readable storage medium including storage device.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment was stressed is the difference with other embodiment.It is real especially for system
Apply for example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
Embodiments herein is the foregoing is only, the application is not limited to.For those skilled in the art
For, the application can have various modifications and variations.It is all any modifications made within spirit herein and principle, equivalent
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (10)
1. a kind of method of signal transmission, applied to light relay system, the light relay system includes via node and purpose
Node, the via node and the destination node are communicated by the first channel, it is characterised in that methods described includes：
The via node obtains the first signal to be forwarded and the secondary signal itself produced, according to default superposition rule
Processing is overlapped to first signal and the secondary signal, the first superposed signal is obtained；
The via node sends first superposed signal by first channel to the destination node；
The destination node receives the second superposed signal that first superposed signal is developed by first channel；
The destination node is demodulated processing according to default demodulation rule to second superposed signal, obtains and described the
The corresponding demodulated signal of one signal, and demodulated signal corresponding with the secondary signal.
2. according to the method described in claim 1, it is characterised in that described regular to first signal according to default superposition
And the secondary signal is overlapped processing, including：
Determine the power coefficient of first signal and the power coefficient of the secondary signal；Wherein, first signal
Power coefficient is different from the power coefficient of the secondary signal；
The power coefficient of power coefficient and the secondary signal based on first signal is to first signal and institute
State secondary signal and be overlapped processing.
3. method according to claim 2, it is characterised in that described to be superimposed according to default demodulation rule to described second
Signal is demodulated processing, including：
Obtain the power coefficient and the power coefficient of the secondary signal for first signal that the via node is determined；
The power coefficient of power coefficient and the secondary signal based on first signal, determines first superposed signal
Corresponding maximum likelihood decision threshold value；
Based on the corresponding maximum likelihood decision threshold value of first superposed signal, place is demodulated to second superposed signal
Reason.
4. method according to claim 3, it is characterised in that the light relay system also includes source node, the source section
Point is communicated with the via node by second channel, the acquisition the first signal to be forwarded, including：
Receive the 4th signal that the 3rd signal develops by the second channel；Wherein, the 3rd signal is the source
The signal that node is sent by the second channel to the via node；
Processing is demodulated to the 4th signal, the first signal to be forwarded is obtained；
Methods described also includes：
The source node determines the power coefficient of the 3rd signal；
The destination node obtains the power coefficient for the 3rd signal that the source node is determined based on the via node；
The destination node determines the power coefficient of the average error bit rate of itself and first signal, the secondary signal
Power coefficient, the power coefficient of the 3rd signal, the channel of the channel coefficients of first channel and the second channel
The corresponding relation of coefficient；
The destination node is based on the corresponding relation, it is determined that specifying the specified power of first signal corresponding to performance number
The specified power coefficient of coefficient, the specified power coefficient of the secondary signal and the 3rd signal.
5. method according to claim 4, it is characterised in that if the specified performance number is 1, the destination node base
The specified power coefficient of first signal corresponding to the specified performance number, second letter are determined in the corresponding relation
Number specified power coefficient and the specified power coefficient of the 3rd signal be respectively：
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1
Or
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Wherein,The specified power coefficient of respectively described first signal, the specified power train of the secondary signal
The specified power coefficient of several and described 3rd signal；h1、h2The channel coefficients and described second of respectively described first channel
The channel coefficients of channel.
6. a kind of device of signal transmission, applied to light relay system, the light relay system includes via node and purpose
Node, the via node and the destination node are communicated by the first channel, it is characterised in that described device includes should
Laminating module, sending module for the via node, and receiving module, solution mode transfer applied to the destination node
Block：
The laminating module, first signal to be forwarded for obtaining and the secondary signal itself produced, according to default folded
Plus rule is overlapped processing to first signal and the secondary signal, obtains the first superposed signal；
The sending module, for sending first superposed signal to the destination node by first channel；
The receiving module, for receiving the second superposition letter that first superposed signal is developed by first channel
Number；
The demodulation module, for according to it is default demodulation rule processing is demodulated to second superposed signal, obtain and
The corresponding demodulated signal of first signal, and demodulated signal corresponding with the secondary signal.
7. device according to claim 6, it is characterised in that the laminating module is used for：
Determine the power coefficient of first signal and the power coefficient of the secondary signal；Wherein, first signal
Power coefficient is different from the power coefficient of the secondary signal；
The power coefficient of power coefficient and the secondary signal based on first signal is to first signal and institute
State secondary signal and be overlapped processing.
8. device according to claim 7, it is characterised in that the demodulation module is used for：
Obtain the power coefficient and the power coefficient of the secondary signal for first signal that the via node is determined；
The power coefficient of power coefficient and the secondary signal based on first signal, determines first superposed signal
Corresponding maximum likelihood decision threshold value；
Based on the corresponding maximum likelihood decision threshold value of first superposed signal, place is demodulated to second superposed signal
Reason.
9. device according to claim 8, it is characterised in that the light relay system also includes source node, the source section
Point is communicated with the via node by second channel, and the laminating module is further used for：
Receive the 4th signal that the 3rd signal develops by the second channel；Wherein, the 3rd signal is the source
The signal that node is sent by the second channel to the via node；
Processing is demodulated to the 4th signal, the first signal to be forwarded is obtained；
Methods described also includes the first determining module applied to the source node, and the acquisition applied to the destination node
Module, the second determining module：
First determining module, the power coefficient for determining the 3rd signal；
The acquisition module, the power train for obtaining the 3rd signal that the source node is determined based on the via node
Number；
Second determining module, the power coefficient, described for determining the average error bit rate of itself and first signal
The power coefficient of secondary signal, the power coefficient of the 3rd signal, the channel coefficients of first channel and described second
The corresponding relation of the channel coefficients of channel；And based on the corresponding relation, it is determined that specifying described first corresponding to performance number
The specified power coefficient of the specified power coefficient of signal, the specified power coefficient of the secondary signal and the 3rd signal.
10. device according to claim 9, it is characterised in that if the specified performance number is 1, described second determines
The specified power coefficient of first signal, the specified power coefficient of the secondary signal and the 3rd letter that module is determined
Number specified power coefficient be respectively：
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Or
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</mrow>
</mfrac>
</mrow>
Wherein,The specified power coefficient of respectively described first signal, the specified power train of the secondary signal
The specified power coefficient of several and described 3rd signal；h1、h2The channel coefficients and described second of respectively described first channel
The channel coefficients of channel.
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| CN201710300306.2A CN107196711B (en) | 2017-05-02 | 2017-05-02 | The method and device of signal transmission |
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Cited By (1)
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