CN105608025B - Cross talk counteracting method and device based on coupled transmission line channel transfer matrices inverse matrix - Google Patents
Cross talk counteracting method and device based on coupled transmission line channel transfer matrices inverse matrix Download PDFInfo
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- CN105608025B CN105608025B CN201510409853.5A CN201510409853A CN105608025B CN 105608025 B CN105608025 B CN 105608025B CN 201510409853 A CN201510409853 A CN 201510409853A CN 105608025 B CN105608025 B CN 105608025B
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/10—Program control for peripheral devices
- G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
- G06F13/124—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware is a sequential transfer control unit, e.g. microprocessor, peripheral processor or state-machine
- G06F13/128—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware is a sequential transfer control unit, e.g. microprocessor, peripheral processor or state-machine for dedicated transfers to a network
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Abstract
The present invention provides a kind of cross talk counteracting method and device based on coupled transmission line channel transfer matrices inverse matrix, this method and device can be applied to the crosstalk counteracting in one group of n (n >=2) coupled transmission line.The method of the present invention first establishes channel transfer matrices H in one group of n (n >=2) coupled transmission line, then the inverse matrix of channel transfer matrices H is sought, crosstalk counteracting model is established according to the inverse matrix of H-matrix, 1 signal processing module is added in the output end of one group of n (n >=2) coupled transmission line, respective handling is carried out to signal, make channel transfer matrices unit battle array, to realize crosstalk counteracting.
Description
Technical field
The present invention relates to a kind of cross talk counteracting methods based on coupled transmission line channel transfer matrices inverse matrix.
Background technique
In high-speed and high-density bus system, since the crosstalk between transmission line limits the interconnection of signal, so reducing string
Disturb the important topic having become in the design of high-speed and high-density bus system.Crosstalk refers in circuit system unwanted signals from one
For a network transitions to adjacent networks, the crosstalk between two networks is mainly the capacitive coupling and perception coupling generated due to fringing field
Caused by closing, all there is crosstalk, such as chip, printed circuit board (Printed Circuit between any pair of network
Board, PCB), in the high-speed and high-density circuit of interconnection piece and other unmasked.
In mobile communication system, multi-input multi-output system (Multiple-Input Multiple-Output,
MIMO) it is abstract mathematical model for describing multi-aerial radio communication system, in multi-aerial radio communication system, transmitting terminal
Signal is sent each independently using mutiple antennas, and is received signal using mutiple antennas in receiving end and restored raw information.
As shown in Figure 1, describing a MIMO multiaerial system model in figure, each antenna of transmitting terminal is independently sending letter
Number, while each antenna of receiving end is receiving signal, the information sent in received signal comprising all antennas of transmitting terminal.
At this point, receiving signal in MIMO multiaerial system and sending the relationship of signal, with coupling in high-speed and high-density bus system
One group of coupled transmission line that output signal is similar with the relationship of input signal, as shown in Figure 2 on transmission line is closed, every transmission lines
It include the information of all input signals of transmission line in output signal, the existing information inputted by this transmission lines input terminal,
Also the crosstalk signal for thering are other transmission line couplings to come.Based on this principle, some technologies of MIMO multiaerial system
For reducing crosstalk or carrying out crosstalk counteracting.
In general, the input and output of the coupled transmission line on pcb board, signal can be expressed as the pass as shown in Fig. 3
System's figure, can regard a channel between any two input terminal and output end as, transmission line is channel, between transmission line
Signal coupling is also channel, and signal transmits in the channel, then, the signal relation of input terminal and output end is just on coupled transmission line
It can be described with channel transfer matrices.
According to document [Sendaula M, Sadiku M, Heiman R.Crosstalk computation in
Coupled transmission lines [C] .In:IEEE Proceedings of the SOUTHEASTCON ' 91,
Williamsburg, 1991,790-795.], due to the presence of crosstalk, in n coupled transmission line, output signal and input
The relationship availability vector and matrix of signal indicates
In formula, H is that a n × n ties up matrix,For the output signal vector on coupled transmission line, V (0) is that coupling passes
Input signal vector on defeated line.
The channel transfer matrices that H is coupled transmission line are now defined, as shown in formula (2).
According to formula (1) it is found that the element in H-matrix is actually the pass shown between output signal and input signal
There is following relationship in system with input signal for the output signal on the i-th transmission lines in coupled transmission line as shown in Figure 3
In formula,For the output signal on the i-th transmission lines, vi(1≤i≤n) is on the i-th transmission lines
Input signal, hij(1≤i, j≤n) is the element in H-matrix.
Equally, according to the definition of S parameter, for the coupled transmission line of port as shown in Figure 3 name, in port match
In the case of, define 1,2 ..., the port n is input port, and n+1, n+2 ..., when the port 2n is output port, available S joins
Output signal on the i-th represented transmission lines of number is as follows
In formula,For the output signal on the i-th transmission lines, vi(1≤i≤n) is on the i-th transmission lines
Input signal, Sij(1≤i, j≤n) is the element in collision matrix S.
By the relationship between formula (3) and the available element and S parameter in port match in H-matrix of formula (4)
It is as follows
hij=Sn+ij(1≤i, j≤n) (5)
Due to the crosstalk between coupled transmission line be it is mutual, under all linear electrical parameter unanimous circumstances, H-matrix is one
A symmetrical matrix.
Such as drawn a conclusion according to available to the analysis of channel transfer matrices above: if the letter of coupled transmission line can be made
Road transmission matrix H is unit battle array, then the output signal in coupled transmission line on every transmission lines is equal to input signal, at this moment
Crosstalk in coupled transmission line between transmission line can be eliminated.
The method of the present invention is namely based on the above theory, and channel transfer matrices H is first established in coupled transmission line, then seeks letter
The inverse matrix of road transmission matrix H, the output end according to the inverse matrix form of H-matrix in coupled transmission line carry out accordingly signal
Processing, the coupled transmission line channel transfer matrices unit battle array that makes that treated, to realize crosstalk counteracting.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of strings based on coupled transmission line channel transfer matrices inverse matrix
Disturb counteracting method.This method is applied to the crosstalk counteracting in one group of n (n >=2) coupled transmission line.
As shown in Fig. 2, one group of n (n >=2) parallel coupling transmission line is given in figure, at this point, this group of n (n >=2) coupling
The channel transfer matrices for closing transmission line are H, it is clear that are had
HH-1=I (6)
According to formula (6), it is only necessary to coupled transmission line output end multiplied by H-matrix inverse matrix H-1, so that it may so that processing
Channel transfer matrices afterwards are unit battle array, to realize crosstalk counteracting.
In order to solve the cross-interference issue between upper one group of n (n >=2) coupled transmission line of PCB, the present invention provides a kind of for one
The cross talk counteracting method based on coupled transmission line channel transfer matrices inverse matrix of group n (n >=2) coupled transmission line, feature
Be, cross talk counteracting method the following steps are included:
A) signal processing is carried out to the road n signal to be output in the output end of one group of n (n >=2) coupled transmission line.
B) road n signal output that treated.
Wherein, the cross talk counteracting method is applied to one group of coupling that quantity in the coupled transmission line is more than or equal to 2
Close transmission line or multiple groups coupled transmission line.
Wherein the output end in one group of n (n >=2) coupled transmission line carries out at signal the road n signal to be output
Reason, the signal processing method are that the road the n signal vector right side to be output is multiplied matrix H-1, wherein matrix H-1It is this group of n (n of matrix
>=2) inverse matrix of coupled transmission line channel transfer matrices H.
For this cross talk counteracting method, the invention also discloses one kind to be based on coupled transmission line channel transfer matrices against square
The cross talk counteracting method device of battle array, including 1 signal processing module are set to one group of n (n >=2) coupled transmission line output
End, multiplies matrix H for signal vector to be output to be carried out to the right side again-1Movement.
Wherein, the cross talk counteracting device is applied to one group of coupling that quantity in the coupled transmission line is more than or equal to 2
Close transmission line or multiple groups coupled transmission line.
Wherein, the signal processing module in the cross talk counteracting device, according to the property of matrix and formula (6) it is found that addition
Signal processing module on coupled transmission line can also be placed on the input terminal of transmission line.
Implement the cross talk counteracting method and dress disclosed in this invention based on coupled transmission line channel transfer matrices inverse matrix
It sets, the crosstalk of high-speed and high-density bus system can be reduced.
Detailed description of the invention:
Fig. 1 is a MIMO multiaerial system model；
Fig. 2 is one group of n coupled transfer line chart；
Fig. 3 is output signal and input signal relational graph on one group of n coupled transmission line；
Fig. 4 is the crosstalk counteracting figure of embodiment provided by the present invention；
Fig. 5 is device figure used in embodiment provided by the invention；
Specific embodiment
To solve the cross-interference issue mentioned in background technique, present embodiment discloses one kind to be applied to one group of n (n >=2) item
The cross talk counteracting method based on coupled transmission line channel transfer matrices inverse matrix on coupled transmission line.This method is in one group of n
Signal processing is carried out on (n >=2) coupled transmission line, so that the channel transfer matrices H of this group of coupled transmission line becomes unit matrix,
To realize crosstalk counteracting.
The main implementation steps of the present embodiment are as shown in Fig. 4, comprising:
A) signal processing is carried out to the road n input signal in the output end of one group of n (n >=2) coupled transmission line；
B) road n signal output that treated.
Cross talk counteracting method disclosed in the present embodiment can be applied to one group of n (n >=2) transmission lines in coupled transmission line
Or multiple groups n (n >=2) transmission lines.
The road n signal to be output is carried out signal in the output end of coupled transmission line by cross talk counteracting method disclosed in the present embodiment
Processing, which is to treat the output signal vector right side to multiply matrix H-1, wherein matrix H-1It is that the coupling of this group of n (n >=2) item passes
The inverse matrix of defeated line channel transfer matrices.
Disclosed in the present embodiment in cross talk counteracting method, adding signal processing module on coupled transmission line can also be with
It is placed on the input terminal of transmission line.
The embodiment provides it is a kind of be applied to one group of n (n >=2) coupled transmission line based on coupled transmission line
The cross talk counteracting device of channel transfer matrices inverse matrix, the device is as shown in Fig. 5, including components A, signal processing module and portion
Part B (components A and part B can be central processing unit and memory in system on chip, or by bus interconnection other
Component).
When being interconnected in the components A of high-speed and high-density circuit system and part B, the device is defeated in coupled transmission line
Outlet carries out signal processing then output signal.
Output signal is treated disclosed in the present embodiment carries out the input terminal that signal processing module can also be placed on transmission line.
Provided in the present embodiment it is a kind of be applied to one group of n (n >=2) coupled transmission line based on coupled transmission line channel
The cross talk counteracting device of transmission matrix inverse matrix is pair when the method for the present invention is applied to multiple groups n (n >=2) coupled transmission line
The method of the present invention is applied to reuse when one group of n (n >=2) coupled transmission line.
Above to a kind of crosstalk counteracting side based on coupled transmission line channel transfer matrices inverse matrix provided by the present invention
Method is described in detail.Used herein a specific example illustrates the principle and implementation of the invention, above
The explanation of embodiment is merely used to help understand method and its core concept of the invention；Meanwhile for the general skill of this field
Art personnel, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this
Description should not be construed as limiting the invention.
Claims (5)
1. a kind of cross talk counteracting method based on coupled transmission line channel transfer matrices inverse matrix is applied to one group of n item coupling and passes
Crosstalk counteracting in defeated line, which is characterized in that cross talk counteracting method the following steps are included:
A) signal processing, the signal processing method are carried out to the road n signal to be output in the output end of one group of n coupled transmission line
For the road the n signal vector right side to be output is multiplied matrix H-1, wherein matrix H-1It is this group of n coupled transmission line channel transfer matrices
The inverse matrix of H；
B) road n signal output that treated, wherein n >=2.
2. cross talk counteracting method as described in claim 1, which is characterized in that the cross talk counteracting method is applied to the coupling
Quantity is more than or equal to 2 one group of coupled transmission line or multiple groups coupled transmission line in transmission line.
3. a kind of crosstalk based on coupled transmission line channel transfer matrices inverse matrix applied in one group of n coupled transmission line is supported
Disappear device, which is characterized in that and the cross talk counteracting device includes 1 signal processing module, is set to the output end of transmission line,
Multiply matrix H for carrying out the right side to the signal vector to be output on this group of n coupled transmission line-1Movement, wherein matrix H-1It is this
The inverse matrix of n coupled transmission line channel transfer matrices H of group, wherein n >=2.
4. cross talk counteracting device as claimed in claim 3, which is characterized in that the cross talk counteracting device is applied to the coupling
Quantity is more than or equal to 2 one group of coupled transmission line or multiple groups coupled transmission line in transmission line.
5. cross talk counteracting device as claimed in claim 3, which is characterized in that signal processing mould of the addition on coupled transmission line
Block can also be placed on the input terminal of transmission line.
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Citations (5)
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| CN101128993A (en) * | 2005-02-25 | 2008-02-20 | 日本电气株式会社 | Transmission line estimating device, CDMA receiving device, and transmission line estimating method |
| CN101291062A (en) * | 2008-06-13 | 2008-10-22 | 清华大学 | Analysis method of DC power flow in dynamic topology electric network |
| CN102103167A (en) * | 2009-12-17 | 2011-06-22 | 台湾积体电路制造股份有限公司 | Cascaded-based de-embedding methodology |
| CN103780283A (en) * | 2013-09-18 | 2014-05-07 | 北京信息科技大学 | Method and device for counteracting crosstalk based on coupling transmission line channel transmission matrix |
| CN104749488A (en) * | 2015-03-31 | 2015-07-01 | 华南理工大学 | Direct-current circuit time domain fault distance measuring method based on continuous data window |
-
2015
- 2015-07-14 CN CN201510409853.5A patent/CN105608025B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101128993A (en) * | 2005-02-25 | 2008-02-20 | 日本电气株式会社 | Transmission line estimating device, CDMA receiving device, and transmission line estimating method |
| CN101291062A (en) * | 2008-06-13 | 2008-10-22 | 清华大学 | Analysis method of DC power flow in dynamic topology electric network |
| CN102103167A (en) * | 2009-12-17 | 2011-06-22 | 台湾积体电路制造股份有限公司 | Cascaded-based de-embedding methodology |
| CN103780283A (en) * | 2013-09-18 | 2014-05-07 | 北京信息科技大学 | Method and device for counteracting crosstalk based on coupling transmission line channel transmission matrix |
| CN104749488A (en) * | 2015-03-31 | 2015-07-01 | 华南理工大学 | Direct-current circuit time domain fault distance measuring method based on continuous data window |
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