CN107493153A - Lift signal detecting method and signal receiving device that encoding rate searches reliability - Google Patents
Lift signal detecting method and signal receiving device that encoding rate searches reliability Download PDFInfo
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- CN107493153A CN107493153A CN201610409512.2A CN201610409512A CN107493153A CN 107493153 A CN107493153 A CN 107493153A CN 201610409512 A CN201610409512 A CN 201610409512A CN 107493153 A CN107493153 A CN 107493153A
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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
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
- H04L1/0038—Blind format detection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0012—Modulated-carrier systems arrangements for identifying the type of modulation
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Abstract
The present invention relates to a kind of signal detecting method, the planisphere to a modulation scheme corresponding with one is relevant, and for lifting the reliability of encoding rate search, include a shade between adjacent two constellation point in the modulation scheme, the signal detecting method, which includes, receives multiple signals, and the plurality of signal is mapped into the planisphere；When one first signal is located at the shade in the plurality of signal, give up first signal；And when a secondary signal is not located at the shade in the plurality of signal, judge the constellation point corresponding to the secondary signal.
Description
Technical field
The present invention refers to a kind of signal detecting method and signal receiving device, it is espespecially a kind of lift encoding rate search can
By the signal detecting method and signal receiving device of degree.
Background technology
In digital communications system, signal sending end can according to different signal modulation modes, and according to channel environment come
Different encoding rate (Code Rate) is selected to carry out signal transmission.For example, in eight phase phase-shift keying (PSK) (8Phase Shift
Keying, 8PSK) under modulation system, signal sending end can send signal according to selected encoding rate, wherein, each
Encoding rate can be corresponded to a kind of signal distributed mode on planisphere (Constellation Diagram).
However, signal receiving end possibly can not learn the encoding rate selected by transmitting terminal, and signal kenel can not be learnt.
In known techniques, common receiving side signal formula is the signal received for each pen, is carried out with various possible encoding rates
Decoding and comparison, and then received when solving correct encoding rate, this mode is very complicated and expends a large amount of calculation resources.
In view of this, it is necessary to propose another more efficient way in fact to judge the encoding rate of signal.
The content of the invention
The main object of the present invention is to provide a kind of signal detecting method and signal receiving device, and it can be according to being connect
The collection of letters number being distributed to judge the encoding rate of signal (Code Rate) on planisphere (Constellation Diagram), and
The reliability of encoding rate search is lifted through the setting of shade.
The present invention discloses a kind of signal detecting method, planisphere (Constellation to a modulation scheme corresponding with one
Diagram it is) relevant, and for lifting the reliability of encoding rate search.Adjacent two constellation point in the planisphere
Include a shade between (Constellation Point).The signal detecting method, which includes, receives multiple signals, and should
Multiple signals map to the planisphere；When one first signal is located at the shade in the plurality of signal, give up first signal；With
And when a secondary signal is not located at the shade in the plurality of signal, judge the constellation point corresponding to the secondary signal.
The present invention separately discloses a kind of signal receiving device, for performing a signal detecting method to lift encoding rate search
Reliability.The signal detecting method planisphere (Constellation Diagram) to a modulation scheme corresponding with one is relevant
Connection relation, include a shade between adjacent two constellation point (Constellation Point) in the planisphere.The signal receives
Device includes a signal receiving module, a processing unit and a storage element.The signal receiving module can be used to receive multiple
Signal.The processing unit can be used to perform a source code.The storage element is coupled to the processing unit, can be used to store the formula
Code, the source code indicate that the processing unit performs following steps：The plurality of signal received is mapped into the planisphere；When this
When one first signal is located at the shade in multiple signals, give up first signal；And when a secondary signal in the plurality of signal
When not being located at the shade, the constellation point corresponding to the secondary signal is judged.
Brief description of the drawings
Fig. 1 is the schematic diagram of the signal receiving device of the embodiment of the present invention one.
Fig. 2 is the schematic diagram of the planisphere of the embodiment of the present invention one.
Fig. 3 A and Fig. 3 B are the schematic diagram for the encoding rate that the embodiment of the present invention includes various constellations point.
Fig. 4 is the schematic diagram of the signal detection flow of the embodiment of the present invention one.
Fig. 5 is that the embodiment of the present invention calculates the constellation point that signal is located at the distribution of particular constellation figure under different shade width
Ratio schematic diagram.
Fig. 6 is the schematic diagram of another planisphere of the embodiment of the present invention.
Fig. 7 is the schematic diagram of another signal detection flow of the embodiment of the present invention.
Symbol description
10 signal receiving devices
102 signal receiving modules
104 processing units
106 storage elements
20th, 60 planisphere
W shade width
CP1~CP8, CP1'~CP8' constellation points
40 signal detection flows
400~420 steps
C1~C4 curves
70 signal detection flows
700~732 steps
Embodiment
Fig. 1 is refer to, Fig. 1 is the schematic diagram of the signal receiving device 10 of the embodiment of the present invention one.As shown in figure 1, signal connects
Receiving apparatus 10 includes a signal receiving module 102, a processing unit 104 and a storage element 106.Signal receiving module 102
Can reception signal, and transmit signals to processing unit 104.Processing unit 104 can perform the formula stored by storage element 106
Code, with encoding rate (Code Rate) method for searching for the signal received carrying out that there is high-reliability.Specifically, signal
The signal that receiving module 102 receives can first map to a planisphere (Constellation Diagram), adjacent on planisphere
A shade is provided between two constellation points (Constellation Point).Then, processing unit 104 can receive to each
Signal sequentially judged, to judge it whether in the shade.If a signal is located in shade, give up the signal and
The constellation point corresponding to the signal is not judged；If a signal is not in shade, the constellation point corresponding to the signal is judged.
Then, the signal after processing unit 104 can filter to shade carries out the judgement of encoding rate.
Being different from all signals received in known technology can all be judged as positioned at a certain constellation point on constellation, at this
In the embodiment of invention, only its corresponding constellation point can be judged to not being located at the signal in shade.Preferably, shade is disposed on
Between two adjacent constellation points, and it is roughly the same with the distance of this two adjacent constellation point.In this case, the signal fallen into shade
Often relatively it is difficult to the signal for judging its constellation point, this signal may be influenceed by larger noise and produce larger error.
On the contrary, the signaling point in the shade is often close to a certain constellation point, thus easily determine that its hithermost constellation point is
The corresponding constellation point of signal, and error rate is relatively low.Therefore, can in the case of the signal not in shade is only judged
Obtain the higher degree of accuracy and reliability.
Fig. 2 is refer to, Fig. 2 is the schematic diagram of the planisphere 20 of the embodiment of the present invention one.Planisphere 20 includes signal reception
Multiple signals that device 10 receives within a period of time, each of which signal can be according to its characteristics of signals (such as intensity, phase
Deng) signaling point is expressed as in more planes.In this instance, encoding mechanism is eight phase phase-shift keying (PSK)s used by signal
(8Phase Shift Keying, 8PSK), therefore include 8 constellation point CP1~CP8 on planisphere 20 around multilevel
Origin is evenly distributed.Signaling point is then distributed in around constellation point CP1~CP8, and processing unit 104 can be according to the position of signaling point
To judge the constellation point corresponding to signal, and then judge the bit information of signal entrained with.
Understood with further reference to Fig. 2, in planisphere 20, a shade is all included between every two adjacent constellation point, shade is
The straight line vertical using the line between two adjacent constellation points can arbitrarily be set as border, its width W.In addition, the position of shade is big
The scope close with the distance of adjacent two constellation point is covered in cause, that is, the signaling point fallen within this range is relatively difficult to judge that it corresponds to
Which constellation point.For example, between constellation point CP2 and CP3, a signaling point in shade and constellation point CP2 away from
From close to a distance from the signaling point and constellation point CP3, thus it is difficult to judge and wrongheaded probability is higher.In addition,
The border of shade is roughly equal to the distance of adjacent two constellation point.For example, as shown in Fig. 2 for constellation point CP2 and CP3
Between shade for, border to the constellation point CP3 distance on the left of it be approximately equal to right side border to constellation point CP2's
Distance.The present invention can give up the signaling point for being not easy to be judged in shade so that the reliability of encoding rate search is carried
Rise.It is noted that Fig. 2 only illustrates the signaling point (signal for being selected to judge encoding rate) not in shade, it is real
On border, part signal point (signal being rejected) is also included in shade.
Due to all including a shade between every adjacent two constellation point, all shades can form a shade model in planisphere 20
Enclose, this shade scope can be represented by below equation：
|s_I|≤W/2
|s_Q|≤W/2
|(|s_I|-|s_Q|)|≤√2×W/2
Wherein, s_I represents multilevel X-axis (more real parts), and s_Q represents multilevel Y-axis (more imaginary parts), and W is represented
The width of shade.That is, shade scope is represented by the connection collection of above three equation, as long as a signal s=s_I+j ×
S_Q falls into above equation in the range of any one, that is, represents the signal and be located at shade and should be rejected.
In other words, shade can be used to filter easily misjudged signaling point, use the reliability of promotion signal judgement.Enter
For one step, the width of shade can be arbitrarily adjusted according to system requirements.In general, the width of shade is bigger, judges to believe
Number accuracy rate it is also higher.After using shade filtering easily misjudged signaling point, the present invention can determine whether to receive
To signal belong to any encoding rate.Wherein, any encoding rate can all correspond to the planisphere distribution into planisphere, and
It is different that each planisphere is distributed in the constellation point included on planisphere.In this case, signal receiving device can be by
Drop point of the signal on planisphere is distributed to judge whether its corresponding constellation point meets a particular constellation figure, and judges one according to this
Whether the signal received in during section, which corresponds to the particular constellation figure, is distributed corresponding encoding rate.
Specifically, signal receiving device can take out part in 8 constellation points corresponding to above-mentioned eight phases phase-shift keying (PSK)
Constellation point is distributed as particular constellation figure, and these constellation points correspond to a specific coding rate, and it, which is distributed, may belong to a kind of specific
Modulation scheme (such as QPSK (Quadrature Phase Shift Keying, QPSK) or two-phase PSK
(Binary Phase Shift Keying, BPSK) etc.).Then, signal receiving device interior during one section can judge to receive
Signal whether positioned at particular constellation figure distribution in constellation point (constellation point for belonging to specific coding rate).Signal receiving device
Sequentially each signal can be judged, in one embodiment, a counter can be set in signal receiving device, when receiving
When its corresponding constellation point of one signal is located at the distribution of particular constellation figure, one can be added to counter.According to the statistics knot of counter
Fruit, signal receiving device can determine whether in one section of period, not be located in the signal of shade, positioned at the constellation of particular constellation figure distribution
The ratio of point.That is, after filtering out positioned at the signal of shade, by corresponding to the signal judged not in shade
It belongs to the ratio of the constellation point of particular constellation figure distribution to constellation point, can learn that the signal received belongs to any encoding rate.
For example, signal transmission end may be transmitted with two kinds of encoding rates, and this two kinds of encoding rates all use four phase phases
The modulation scheme for moving keying (Quadrature Phase Shift Keying, QPSK) transmits data, its constellation point included
For around 4 evenly distributed constellation points of multilevel origin.Wherein, the constellation point that an encoding rate A is included is Fig. 2 constellation
Constellation point CP1, CP3, CP5 and CP7 in Figure 20, as shown in Figure 3A；The constellation point that another encoding rate B is included is Fig. 2 star
Constellation point CP2, CP4, CP6 and CP8 in seat Figure 20, as shown in Figure 3 B.Then, signal receiving device can receive by judgement
To the drop point of signal carry out encoding rate search.If signal transmission end is transmitted with encoding rate A, fall constellation point CP1,
CP3, CP5 and CP7 number of signals can be more than the number of signals fallen in constellation point CP2, CP4, CP6 and CP8.In this case,
For the signal received after the signal positioned at shade is filtered out, the ratio fallen in constellation point CP1, CP3, CP5 and CP7 is often big
In a particular value.Therefore, signal receiving device can set a critical value, with judge signal fall constellation point CP1, CP3,
When CP5 and CP7 ratio is more than critical value, the signal for judging to receive corresponds to encoding rate A.On the other hand, if signal transmits
When end is transmitted with encoding rate B, it can also judge that signal falls the ratio in constellation point CP2, CP4, CP6 and CP8 according to same way
Example, its Detailed Operation mode will not repeat.
The above-mentioned mode judged on shade setting and signal can be summarized as a signal detection flow 40, as shown in Figure 4.Letter
Number testing process 40 can be used for Fig. 1 signal receiving device 10, and it is comprised the steps of：
Step 400：Start.
Step 402：A signal is received, and the signal is mapped into a planisphere.
Step 404：Judge the signal whether outside the shade scope on planisphere.If so, then perform step 414 and
416；If it is not, then perform step 406.
Step 406：Give up the signal, then perform step 402.
Step 410：Obtain the constellation point that encoding rate A is included.
Step 412：Obtain the constellation point that encoding rate B is included.
Step 414：Judge the constellation point corresponding to the signal whether the constellation point included by encoding rate A.If so, then hold
Row step 418；If it is not, then perform step 402.
Step 416：Judge the constellation point corresponding to the signal whether the constellation point included by encoding rate B.If so, then hold
Row step 420；If it is not, then perform step 402.
Step 418：One is added to one first counter, then performs step 402.
Step 420：One is added to one second counter, then performs step 402.
According to signal detection flow 40, signal receiving device can sequentially be carried out within one section of period to the signal received
Judge, can first judge signal whether outside shade scope, be difficult to judge its place constellation point if so, representation signal is not located at
Position, now it is distributed further according to encoding rate A, B planisphere, is compared with constellation point where signal.Wherein, step 414,
418 and step 416,420 can synchronously it carry out, to carry out the comparison of signal and encoding rate A and encoding rate B simultaneously.Completed when comparing
Afterwards, flow returns step 402, to carry out the judgement of next signal with comparing, until signal is received or reached in advance
Terminate when fixing time.
Fig. 5 is refer to, Fig. 5 calculates signal for the embodiment of the present invention under different shade width W and is located at particular constellation figure
The schematic diagram of the ratio of the constellation point of distribution.Fig. 5 illustrates the ratio distribution map of signal judgement, and the longitudinal axis represents the letter for not being located at shade
In number, positioned at the ratio of the constellation point of particular constellation figure distribution, and transverse axis represents the quantity of received signal, when number of signals is cured
Greatly, aforementioned proportion can level off to a particular value.When the signal transmitted by signal transmission end is a specific coding rate, if receiving terminal
It is distributed with the planisphere corresponding to the specific coding rate to be compared, then majority signal will fall the star in planisphere distribution
Seat point, therefore, when the number of signals increase received, signal is located at the ratio regular meeting of the constellation point of particular constellation figure distribution therewith
And rise.On the contrary, when if the encoding rate that receiving terminal is used for comparing is different from the encoding rate that signal transmission end uses, signal is located at
The ratio regular meeting of the constellation point of particular constellation figure distribution rests on relatively low numerical value (not illustrating).
Fig. 5 depicts the different situations of shade width W to be compared simultaneously.Wherein, curve C1~C3 is respectively shade
Width W be equal to 0.6,0.4,0.2 unit situation (unit on such as Fig. 2 planisphere 20), therefore, in these three cases by
The number of signals that shade filters out is also different.Curve C4 then represents the situation for not using shade, in the case, Suo Youjie
The signal received is all used for the judgement of the planisphere distribution on encoding rate.As shown in figure 5, when shade width W is bigger
When, it is higher and closer to 1 to can obtain the ratio for the constellation point that signal is located at the distribution of particular constellation figure, represents when shade width W is cured
The higher degree of accuracy and reliability can be obtained when big, and (ideally signal be located at the ratio of the constellation point that particular constellation figure is distributed and is equal to
1).In addition, from curve C4, in the case of without using shade, the obtained degree of accuracy is relatively low.It follows that shade is set
The lifting of reliability can be obtained really by putting.It is noted that in the case of shade width W is larger, has and filtered compared with multi signal
Remove so that the speed that curve climbs is relatively slow (such as curve C1), in this case, need to detect the long period or obtain compared with multi signal with
Obtain enough reliabilitys.Those skilled in the art can select suitable shade width W according to the actual requirements.
In addition, signal receiving device can set a critical value, with when curve is increased over the critical value, or
After curve exceedes the critical value and continues one section of special time, the signal for judging to receive is corresponding to specific coding rate.For example,
Set critical value is 0.7, represents and the letter in shade is received and be not located in during signal receiving device judges one section
In number, when being more than 0.7 positioned at the ratio of the corresponding constellation point of specific coding rate, you can it is this to judge the Signal coding rate that receives
Specific coding rate.
It is worth noting that, one of main spirits of the present invention are to provide a kind of method of encoding rate search, it can be saturating
The planisphere corresponding to various encoding rates is crossed to be distributed to compare the signal received, to judge whether signal meets certain specific volume
Code check, and the signal for being relatively difficult to judge its constellation point is filtered to lift reliability using shade.This area tool is generally known
The knowledgeable, which works as, to be modified or be changed according to this, and not limited to this.For example, above-described embodiment system is using eight phase phase-shift keying (PSK)s
Modulation system cuts shade, to judge the Signal coding rate being modulated using QPSK.But in other embodiments
In, also other modulation systems can be used to carry out, for example, can use 16 phase phase-shift keying (PSK)s (16Phase Shift Keying,
Modulation system 16PSK) cuts shade, for comparing with eight phase phase-shift keying (PSK)s, QPSK or other modulation systems
The signal of transmission.In another embodiment, 64 quadrature amplitude modulations (64Quadrature Amplitude can also be used
Modulation, 64QAM) modulation system cut shade, for comparing 16 quadrature amplitude modulation (16Quadrature
Amplitude Modulation, 16QAM) or other modulation systems transmission signal.In addition, above-described embodiment (the 4th figure
Signal detection flow 40) only include a kind of shade set-up mode, for comparing two kinds of encoding rates.But in other embodiments,
Also a variety of shade set-up modes can be included simultaneously to filter the signal received, then reuse the progress of different coding rate
Compare.
For example, signal receiving device can use two kinds of shade set-up modes, and one of which is the eight phase phases according to Fig. 2
Constellation point CP1~CP8 of keying modulation is moved to set shade, what the second way can then modulate according to another eight phases phase-shift keying (PSK)
Constellation point CP1'~CP8' sets shade, as shown in Fig. 6 planisphere 60.Similarly, shade (being represented with oblique line) is to hang down
The straight line of line is as border between straight two adjacent constellation point, and substantially covers the model close with the distance of adjacent two constellation point
Enclose, to filter out the signaling point for being difficult to judge and easily making a mistake.Then, the comparison of encoding rate is carried out.In one embodiment, compile
The constellation point that code check C is included is constellation point CP1', CP3', CP5' and CP7' of planisphere 60, and signal receiving device can be by
The drop point of the signal received by judgement carries out encoding rate detection.If signal transmission end is transmitted with encoding rate C, fall
Constellation point CP1', CP3', CP5' and CP7' number of signals can be more than the letter fallen in constellation point CP2', CP4', CP6' and CP8'
Number amount.Signal receiving device can set a critical value, with judge signal fall in constellation point CP1', CP3', CP5' and
When CP7' ratio is more than critical value, the signal for judging to receive corresponds to encoding rate C.
Fig. 7 is refer to, Fig. 7 is the schematic diagram of another signal detection flow 70 of the embodiment of the present invention, wherein, signal receives dress
Put while using the first shade scope and the second shade scope come trap signal, it corresponds respectively to the screening depicted in Fig. 2 and Fig. 6
Cover scope.Signal detection flow 70 can be used for Fig. 1 signal receiving device 10, and it is comprised the steps of：
Step 700：Start.
Step 702：A signal is received, and the signal is mapped into a planisphere.
Step 704：Judge the signal whether outside the first shade scope on planisphere.If so, then perform step 714
And 716；If it is not, then perform step 706.
Step 706：Give up the signal, then perform step 702.
Step 710：Obtain the constellation point that encoding rate A is included.
Step 712：Obtain the constellation point that encoding rate B is included.
Step 714：Judge the constellation point corresponding to the signal whether the constellation point included by encoding rate A.If so, then hold
Row step 718；If it is not, then perform step 702.
Step 716：Judge the constellation point corresponding to the signal whether the constellation point included by encoding rate B.If so, then hold
Row step 720；If it is not, then perform step 702.
Step 718：One is added to one first counter, then performs step 702.
Step 720：One is added to one second counter, then performs step 702.
Step 722：Judge the signal whether outside the second shade scope on planisphere.If so, then perform step
730；If it is not, then perform step 724.
Step 724：Give up the signal, then perform step 702.
Step 728：Obtain the constellation point that encoding rate C is included.
Step 730：Judge the constellation point corresponding to the signal whether the constellation point included by encoding rate C.If so, then hold
Row step 732；If it is not, then perform step 702.
Step 732：One is added to one the 3rd counter, then performs step 702.
Detailed Operation and variation pattern on signal detection flow 70 refer to described above, are not repeated in this.
In summary, the present invention provides a kind of method of encoding rate search, can pass through the constellation corresponding to various encoding rates
Figure is distributed to compare the signal received, to judge whether signal meets certain specific coding rate.If received in during one section
Signal in, when being more than a critical value positioned at the ratio of the constellation point corresponding to specific coding rate, you can judge the letter received
Number correspond to specific coding rate.In addition, the present invention can set shade between every two adjacent constellation points, more difficult for filtering
To judge the signal of its constellation point, and then lift the reliability of encoding rate search.
The foregoing is only presently preferred embodiments of the present invention, all equivalent changes done according to scope of the present invention patent with
Modification, it should all belong to the covering scope of the present invention.
Claims (12)
1. a kind of signal detecting method, the planisphere to a modulation scheme corresponding with one are relevant, and for lifting coding
The reliability of rate search, include a shade between adjacent two constellation point in the planisphere, the signal detecting method includes：
Multiple signals are received, and the plurality of signal is mapped into the planisphere；
When one first signal is located at the shade in the plurality of signal, give up first signal；And
When a secondary signal is not located at the shade in the plurality of signal, the constellation point corresponding to the secondary signal is judged.
2. signal detecting method as claimed in claim 1, it is characterised in that when the secondary signal is not located in the plurality of signal
During the shade, the step of judging the constellation point corresponding to the secondary signal, includes：
Obtain the position that the secondary signal is mapped on the planisphere, and judge the hithermost constellation point in the position for this
Constellation point corresponding to binary signal.
3. signal detecting method as claimed in claim 1, it is characterised in that vertical adjacent two constellation in a border of the shade
Line between point.
4. signal detecting method as claimed in claim 1, it is characterised in that additionally comprised：
Each encoding rate in multiple encoding rates is respectively corresponding to the planisphere minute for including various constellations point in the planisphere
Cloth；And
Judge whether the constellation point corresponding to the plurality of signal meets particular constellation figure distribution, and judge the plurality of signal according to this
Whether correspond to the particular constellation figure and be distributed a corresponding encoding rate.
5. signal detecting method as claimed in claim 4, it is characterised in that particular constellation figure distribution corresponds to a specific volume
Code check, and judge that the step of whether constellation point corresponding to the plurality of signal meets particular constellation figure distribution includes：
In the constellation point of the modulation scheme, take out the particular constellation figure and be distributed included constellation point；
Judge whether the constellation point corresponding to the plurality of signal is that the particular constellation figure is distributed included constellation point；
When it is the constellation point that the particular constellation figure is distributed to judge the constellation point in the plurality of signal corresponding to a signal, to one
Counter adds one, to produce a statistical result；And
According to the statistical result, judge not to be located in the plurality of signal of the shade, positioned at the constellation of particular constellation figure distribution
One ratio of point.
6. signal detecting method as claimed in claim 5, it is characterised in that it is specific to judge whether the plurality of signal corresponds to this
Planisphere is distributed the step of corresponding encoding rate and included：
Set a critical value；And
When the ratio is more than the critical value, judge that the plurality of signal corresponds to the particular constellation figure and is distributed that corresponding this is specific
Encoding rate.
7. a kind of signal receiving device, for performing a signal detecting method to lift the reliability of encoding rate search, the signal
The detection method planisphere to a modulation scheme corresponding with one is relevant, is included in the planisphere between adjacent two constellation point
There is a shade, the signal receiving device includes：
One signal receiving module, for receiving multiple signals；
One processing unit, the signal receiving module is coupled to, for performing a source code；And
One storage element, be coupled to the processing unit, for storing the source code, the source code indicate the processing unit perform with
Lower step：
The plurality of signal received is mapped into the planisphere；
When one first signal is located at the shade in the plurality of signal, give up first signal；And
When a secondary signal is not located at the shade in the plurality of signal, the constellation point corresponding to the secondary signal is judged.
8. signal receiving device as claimed in claim 7, it is characterised in that when the secondary signal is not located in the plurality of signal
During the shade, the step of judging the constellation point corresponding to the secondary signal, includes：
Obtain the position that the secondary signal is mapped on the planisphere, and judge the hithermost constellation point in the position for this
Constellation point corresponding to binary signal.
9. signal receiving device as claimed in claim 7, it is characterised in that vertical adjacent two constellation in a border of the shade
Line between point.
10. signal receiving device as claimed in claim 7, it is characterised in that the source code separately indicates that the processing unit performs
Following steps：
Each encoding rate in multiple encoding rates is respectively corresponding to the planisphere minute for including various constellations point in the planisphere
Cloth；And
Judge whether the constellation point corresponding to the plurality of signal meets particular constellation figure distribution, and judge the plurality of signal according to this
Whether correspond to the particular constellation figure and be distributed a corresponding encoding rate.
11. signal receiving device as claimed in claim 10, it is characterised in that it is specific that particular constellation figure distribution corresponds to one
Encoding rate, and judge that the step of whether constellation point corresponding to the plurality of signal meets particular constellation figure distribution includes：
In the constellation point of the modulation scheme, take out the particular constellation figure and be distributed included constellation point；
Judge whether the constellation point corresponding to the plurality of signal is that the particular constellation figure is distributed included constellation point；
When it is the constellation point that the particular constellation figure is distributed to judge the constellation point in the plurality of signal corresponding to a signal, to one
Counter adds one, to produce a statistical result；And
According to the statistical result, judge not to be located in the plurality of signal of the shade, positioned at the constellation of particular constellation figure distribution
One ratio of point.
12. signal receiving device as claimed in claim 11, it is characterised in that judge whether the plurality of signal corresponds to the spy
Determine the step of planisphere is distributed the corresponding encoding rate to include：
Set a critical value；And
When the ratio is more than the critical value, judge that the plurality of signal system corresponds to the particular constellation figure and is distributed the corresponding spy
Delimit the organizational structure code check.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610409512.2A CN107493153B (en) | 2016-06-12 | 2016-06-12 | Signal detection method and signal receiving device for improving encoding rate searching reliability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610409512.2A CN107493153B (en) | 2016-06-12 | 2016-06-12 | Signal detection method and signal receiving device for improving encoding rate searching reliability |
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| Publication Number | Publication Date |
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| JP2000278339A (en) * | 1999-03-24 | 2000-10-06 | Sanyo Electric Co Ltd | Digital broadcast receiver |
| CN101741514A (en) * | 2009-11-24 | 2010-06-16 | 北京天碁科技有限公司 | Method and device for determining constellation points required to be detected in signal detection process |
| CN103237002A (en) * | 2013-04-16 | 2013-08-07 | 东莞宇龙通信科技有限公司 | Terminal and signal detection method |
| CN103368895A (en) * | 2012-03-31 | 2013-10-23 | 富士通株式会社 | Signal detection method and signal receiving device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000278339A (en) * | 1999-03-24 | 2000-10-06 | Sanyo Electric Co Ltd | Digital broadcast receiver |
| CN101741514A (en) * | 2009-11-24 | 2010-06-16 | 北京天碁科技有限公司 | Method and device for determining constellation points required to be detected in signal detection process |
| CN103368895A (en) * | 2012-03-31 | 2013-10-23 | 富士通株式会社 | Signal detection method and signal receiving device |
| CN103237002A (en) * | 2013-04-16 | 2013-08-07 | 东莞宇龙通信科技有限公司 | Terminal and signal detection method |
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