CN110445524A - A kind of distributed beams forming method and device - Google Patents
A kind of distributed beams forming method and device Download PDFInfo
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- CN110445524A CN110445524A CN201910601420.8A CN201910601420A CN110445524A CN 110445524 A CN110445524 A CN 110445524A CN 201910601420 A CN201910601420 A CN 201910601420A CN 110445524 A CN110445524 A CN 110445524A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
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- Radar Systems Or Details Thereof (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to fields of communication technology, and in particular to a kind of distributed beams forming method and device, it is first determined the corresponding relationship of current RSS value and the current RSS value and each transmitting signal；And then the size of more current RSS value and RSS early period value, when the current RSS value is greater than RSS early period value, for the reception device using current RSS value as RSS value early period, Xiang Suoshu emitter feedback RSS value has the information of update；Otherwise, the reception device maintains RSS early period value constant, the information that Xiang Suoshu emitter feedback RSS early period value remains unchanged；Finally determine the disturbed value of all emitters when current RSS value maximum, after all emitters feed back disturbed value fixed information, the reception device carries out phase coupling estimation to the transmitting signals of all emitters, the present invention provides a kind of speed is fast, RSS value acquiring way with high accuracy.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of distributed beams forming method and device.
Background technique
It is a kind of communication for coordination technology that distributed beams, which form (Distributed-Beam-forming), be suitable for it is long away from
From transmission, identical information is sent to reception device by multiple emitters, and the transmitter phase by controlling emitter makes
The signal of multiple emitters is effectively merged in reception device.
When single emitter and reception device can not establish two-way communication, multiple emitters send identical simultaneously
Information is an optional strategy.Since there are small distance differences between reception device and each emitter, to lead
The signal for causing reception device to receive is the superposition of out of phase.Therefore need to adjust the transmission phase of each emitter, so that
The signal that all emitters are sent realizes phase coupling estimation at reception device, and then obtains cooperative gain, is distributed beams
The important research content of formation.
In recent years, it is suggested using the Phase synchronization algorithm of single bit feedback information, and has obtained extensive research.The party
Method can realize that the phase of transmitting end equipment to receiving device is same by single bit of information under limited feedback channel capacity
Step, single bit feedback frame are simple and highly efficient frames in distributed beams molding.Emitter single-bit based on the received
Feedback information decides whether to retain above-mentioned channels offset phase.
However, since respective transmission phase can not be linked up between emitter, and single bit feedback information is basis
The variation generation of signal is received, this obtains the good RSS value (Received-Signal- of cooperative gain for reception device
Strength, received signal strength) bring great challenge.
Summary of the invention
The purpose of the present invention is to provide a kind of distributed beams forming method and devices, it is desirable to provide and a kind of speed is fast,
RSS value acquiring way with high accuracy.
To achieve the goals above, the present invention the following technical schemes are provided:
A kind of distributed beams forming method, comprising:
Determine the corresponding relationship of current RSS value and the current RSS value and each transmitting signal；
The size for comparing current RSS value Yu RSS early period value, it is described to connect when the current RSS value is greater than RSS early period value
For receiving apparatus using current RSS value as RSS value early period, Xiang Suoshu emitter feedback RSS value has the information of update；Otherwise, described
Reception device maintains RSS early period value constant, the information that Xiang Suoshu emitter feedback RSS early period value remains unchanged；
The disturbed value for determining all emitters when current RSS value maximum, when all emitters have fed back disturbed value
After determining information, the reception device carries out phase coupling estimation to the transmitting signal of all emitters.
Further, the corresponding relationship of the current RSS value and each transmitting signal is determined especially by following manner:
If the transmitting signal for the emitter that number is i is xi=cos (wt+ θi), wherein θiIt is the transmitting dress that number is i
The initial phase set, w is the angular frequency for emitting signal, at the time of t is transmitting signal, then the expression formula of current RSS value are as follows:
Wherein, δiIt is the disturbed value numbering the emitter for being i and determining, φiIt is to compile
Number for i emitter and reception device between digital baseband input signal, i=1,2 ..., m, m be all emitters sum,
Y is current RSS value.
Further, the initial value of the RSS early period value is preset default value, and the preset default value value range is
(0,200]。
Further, the step of reception device carries out phase coupling estimation to the transmitting signal of all emitters, specifically:
Determine all disturbed value δ in each emitterjAnd all disturbed value δjCorresponding to disturbance interval table
Weight Qj；
To the weight Q of each emitterjNormalization, if disturbed value δ in normalized emitterjCorresponding power
Weight is Wj, pass through formulaW is calculatedj；
Determine the final disturbed value δ of the emitteri, the final disturbed value δiPass through formula δi=Wj·δjIt calculates
It obtains；
The reception signal of reception device after then completing phase coupling estimation is
Further, when the current RSS value maximum of the determination the step of disturbed value of all emitters, comprising:
Determine disturbance interval table, the disturbance interval table includes disturbed value, the corresponding weight of each disturbed value；
An emitter is randomly selected from all emitters, according to the random of the emitter randomly selected
Several comparison results with greedy probability determine disturbed value；
Disturbed value is determined according to the feedback information of the current RSS value of reception device and RSS early period value comparison result, specifically
Are as follows: when the information of reception device feedback is that current RSS value is greater than RSS early period value, the emitter retains respective initial phase
Upper increased disturbed value, is stepped up the weight of disturbed value in disturbance interval table, and adjusting the greedy probability is 1, otherwise, institute
It states emitter and gives up increased disturbed value in respective initial phase, gradually reduce the weight of disturbed value in disturbance interval table, and adjust
The whole greedy probability；
After all emitters have determined disturbed value, all emitters feed back the fixed information of disturbed value.
A kind of distributed beams molding machine, comprising:
Determination unit, for determining the corresponding relationship of current RSS value and the current RSS value and each transmitting signal；
Updating unit, for comparing the size of current RSS value Yu RSS early period value, when the current RSS value is greater than early period
When RSS value, for the reception device using current RSS value as RSS value early period, Xiang Suoshu emitter feedback RSS value has update
Information；Otherwise, the reception device maintains RSS early period value constant, and Xiang Suoshu emitter feedback RSS early period value remains unchanged
Information；
Phase coupling estimation unit, the disturbed value of all emitters when for determining current RSS value maximum, when all transmittings fill
It sets after feeding back the fixed information of disturbed value, the reception device carries out phase coupling to the transmitting signal of all emitters
It closes.
Further, the corresponding relationship of the current RSS value and each transmitting signal is determined especially by following manner:
If the transmitting signal for the emitter that number is i is xi=cos (wt+ θi), wherein θiIt is the transmitting dress that number is i
The initial phase set, w is the angular frequency for emitting signal, at the time of t is transmitting signal, then the expression formula of current RSS value are as follows:
Wherein, δiIt is the disturbed value numbering the emitter for being i and determining, φiIt is to compile
Number for i emitter and reception device between digital baseband input signal, i=1,2 ..., m, m be all emitters sum,
Y is current RSS value.
Further, the initial value of the RSS early period value is preset default value, and the preset default value value range is
(0,200]。
Further, the phase coupling estimation unit 300 is specifically used for:
Determine all disturbed value δ in each emitterjAnd all disturbed value δjCorresponding to disturbance interval table
Weight Qj；
To the weight Q of each emitterjNormalization, if disturbed value δ in normalized emitterjCorresponding power
Weight is Wj, pass through formulaW is calculatedj；
Determine the final disturbed value δ of the emitteri, the final disturbed value δiPass through formula δi=Wj·δjIt calculates
It obtains；
The reception signal of reception device after then completing phase coupling estimation is
Further, the phase coupling estimation unit is also used to:
Determine disturbance interval table, the disturbance interval table includes disturbed value, the corresponding weight of each disturbed value；
An emitter is randomly selected from all emitters, according to the random of the emitter randomly selected
Several comparison results with greedy probability determine disturbed value；
Disturbed value is determined according to the feedback information of the current RSS value of reception device and RSS early period value comparison result, specifically
Are as follows: when the information of reception device feedback is that current RSS value is greater than RSS early period value, the emitter retains respective initial phase
Upper increased disturbed value, is stepped up the weight of disturbed value in disturbance interval table, and adjusting the greedy probability is 1, otherwise, institute
It states emitter and gives up increased disturbed value in respective initial phase, gradually reduce the weight of disturbed value in disturbance interval table, and adjust
The whole greedy probability；
After all emitters have determined disturbed value, all emitters feed back the fixed information of disturbed value.
The beneficial effects of the present invention are: the present invention discloses a kind of distributed beams forming method and device, it is first determined when
The corresponding relationship of preceding RSS value and the current RSS value and each transmitting signal；More current RSS value and RSS early period in turn
The size of value, when the current RSS value is greater than RSS early period value, the reception device using current RSS value as RSS value early period,
There is the information of update to emitter feedback RSS value；Otherwise, the reception device maintains RSS early period value constant, Xiang Suoshu
The information that emitter feedback RSS early period value remains unchanged；Finally determine the disturbance of all emitters when current RSS value maximum
Value, after all emitters feed back disturbed value fixed information, transmitting of the reception device to all emitters
Signal carries out phase coupling estimation, the present invention provides a kind of speed is fast, RSS value acquiring way with high accuracy.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow diagram of distributed beams forming method of the embodiment of the present invention；
Fig. 2 is the flow diagram of step of embodiment of the present invention S500；
Fig. 3 is a kind of structural schematic diagram of distributed beams molding machine of the embodiment of the present invention.
Specific embodiment
Clear, complete description is carried out to technical solution of the present invention below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel are obtained without making creative work so other embodiments, belong to protection scope of the present invention.
With reference to Fig. 1, a kind of distributed beams forming method provided in an embodiment of the present invention, comprising the following steps:
Step S100, the corresponding relationship of current RSS value and the current RSS value and each transmitting signal is determined；
Step S200, judge whether current RSS value is greater than RSS value early period, if so, executing step S300；If it is not, executing step
Rapid S400；
Step S300, for the described reception device using current RSS value as RSS value early period, Xiang Suoshu emitter feeds back RSS value
There is the information of update；
Step S400, the described reception device maintains RSS early period value constant, and Xiang Suoshu emitter feeds back RSS early period value dimension
Hold constant information；
Step S500, judge whether all emitters feed back the fixed information of disturbed value when current RSS value maximum,
If it is not, jumping to step S100；If so, executing step S600.
Step S600, the described reception device carries out phase coupling estimation to the transmitting signal of all emitters.
It should be noted that in a distributed beams formation system, using a kind of distribution provided in this embodiment
Beam forming method, it usually needs determining emitter carries out the molding cooperation transmission of distributed beams, and reception device can incite somebody to action
Meet the emitter to impose a condition as determining emitter, still, can dynamically adjust, send out due to imposing a condition
Injection device can be before carrying out beam forming according to the determining emitter of screening that imposes a condition.
In the present embodiment, after determining emitter and reception device, each emitter is disturbed by adjusting respective
The transmitting signal of different disturbed values is sent to reception device by dynamic value, and reception device judgement can be obtained maximum RSS value, institute
When having emitter disturbed value to have determined that, the reception device carries out phase coupling estimation to the transmitting signal of all emitters,
So that reception device obtains maximum RSS value.
In a preferred embodiment, the current RSS value and it is each transmitting signal corresponding relationship especially by with
Under type determines:
If the transmitting signal for the emitter that number is i is xi=cos (wt+ θi), wherein θiIt is the transmitting dress that number is i
The initial phase set, w are the angular frequencies for emitting signal, and at the time of t is transmitting signal, then the reception signal of reception device can indicate
Are as follows:
Wherein, δiIt is the disturbed value numbering the emitter for being i and determining, φiIt is to compile
Number for i emitter and reception device between digital baseband input signal, i=1,2 ..., m, m be all emitters sum,
Y is current RSS value.
In the present embodiment, y, m, w, t, θiValue can pass through measurement obtain, φiValue objective reality, it is thus necessary to determine that be
The disturbed value δ of all emitters when current RSS value maximumi。
In a preferred embodiment, the initial value of the RSS early period value is preset default value, described preset scarce
Province be worth value range be (0,200].
The effect of the preset default value is to provide an initial initiation value, as judgment basis, in a reality
It applies in example, 200 can be set by maximum default value.
In a preferred embodiment, the reception device carries out phase coupling estimation to the transmitting signal of all emitters
The step of, specifically:
Determine all disturbed value δ in each emitterjAnd all disturbed value δjCorresponding to disturbance interval table
Weight Qj；
To the weight Q of each emitterjNormalization, if disturbed value δ in normalized emitterjCorresponding power
Weight is Wj, pass through formulaW is calculatedj；
Determine the final disturbed value δ of the emitteri, the final disturbed value δiPass through formula δi=Wj·δjIt calculates
It obtains；
The reception signal of reception device after then completing phase coupling estimation is
In the present embodiment, weighted average is asked to disturbed value respectively determining in all emitters, is in order to more precisely
The calibrator quantity for fitting in all emitters respectively determining disturbed value be conducive to improve by more reasonable phase coupling estimation
The precision of beam forming.
As further improvement of this embodiment, in a preferred embodiment, the step S500 includes:
Determine disturbance interval table, the disturbance interval table includes disturbed value, the corresponding weight of each disturbed value；
An emitter is randomly selected from all emitters, according to the random of the emitter randomly selected
Several comparison results with greedy probability determine disturbed value；
Disturbed value is determined according to the feedback information of the current RSS value of reception device and RSS early period value comparison result, specifically
Are as follows: when the information of reception device feedback is that current RSS value is greater than RSS early period value, the emitter retains respective initial phase
Upper increased disturbed value, is stepped up the weight of disturbed value in disturbance interval table, and adjusting the greedy probability is 1, otherwise, institute
It states emitter and gives up increased disturbed value in respective initial phase, gradually reduce the weight of disturbed value in disturbance interval table, and adjust
The whole greedy probability；
After all emitters have determined disturbed value, all emitters will emit signal and be sent to the reception dress
It sets, so that the reception device carries out phase coupling estimation.
In the present embodiment, each emitter determines whether respective transmission phase, reception device have according to reception signal
Improve and generate single bit feedback information, and the single bit feedback information is fed back into all emitters.
In a preferred embodiment, the determining disturbance interval table includes:
The disturbance section for establishing each emitter regard+δ ,-δ as fundamental disturbances value, wherein δ ∈ (0,2 π]；
Formation+δ,-δ ,+k δ,-k δ ,+2k δ, -2k δ ... ,+nk δ,-nk δ totally 2 (n+1) a disturbed value, each disturbed value
Corresponding weight Qj, wherein n is positive integer, and k is greater than the serial number that 0, j is disturbed value.
In one or more embodiments, the disturbed value is channels offset phase value, emits signal first phase as adjusting
The regulated quantity of position, the fundamental disturbances value are the phase value of a minimum unit.
Table 1 lists the disturbance interval table as n=1, wherein it is 0 that each disturbed value, which corresponds to weight, institute specific as follows
Show.
Disturbance interval table when table 1:n=1.
| Serial number | Disturbed value | Weight |
| 1 | +δ | 0 |
| 2 | -δ | 0 |
| 3 | +kδ | 0 |
| 4 | -kδ | 0 |
With reference to Fig. 2, a preferred embodiment step of step S500 is given below:
Step S510, weight regulatory factor v=0.3, k=3, n=1 is arranged in initiation parameter, determines disturbance interval table,
The disturbance interval table includes disturbed value, the corresponding weight Q of each disturbed valuej, the serial number j of disturbed value；
Step S520, the maximum value Zmax=10 of Z is set, greedy probability is setTo all
Emitter assigns a random number z at random respectivelyi, wherein zi∈ (0,1), i are the number of the emitter；
Step S530, judge ziWhether ep is greater than, if so, randomly choosing a disturbance in disturbance interval table equal probability
Value, if it is not, selection disturbs the disturbed value of maximum weight in interval table；
Step S540, the weight Q of the disturbed value respectively selected in all emitters is recordedi, filled in each transmitting
Respectively increase corresponding disturbed value in the current phase set；
Step S550, the transmitting signal for increasing the disturbed value in each emitter is sent to reception device,
Judge whether the RSS value of the reception device has update according to the feedback information of the reception device, if it is not, executing step
S560, if so, executing step S570；
Step S560, give up the disturbed value in the current phase of each emitter, update in disturbance interval table
Weight isUpdating greedy probability isAnd jump to step S100；
Step S570, retain the disturbed value in the current phase of each emitter, update in disturbance interval table
Weight is Qj+ v, updating greedy probability isAnd jump to step S100；
Step S580, all emitters by emit signal be sent to the reception device, so as to the reception device into
Row phase coupling estimation.
With reference to Fig. 3, the embodiment of the present invention also provides a kind of distributed beams molding machine, comprising:
Determination unit 100, for determining the corresponding pass of current RSS value and the current RSS value with each transmitting signal
System；
Updating unit 200, for comparing the size of current RSS value Yu RSS early period value, before the current RSS value is greater than
When phase RSS value, for the reception device using current RSS value as RSS value early period, Xiang Suoshu emitter feedback RSS value has update
Information；Otherwise, the reception device maintains RSS early period value constant, and Xiang Suoshu emitter feedback RSS early period value remains unchanged
Information；
Phase coupling estimation unit 300, the disturbed value of all emitters when for determining current RSS value maximum, when all hairs
After injection device feeds back the fixed information of disturbed value, the reception device carries out phase to the transmitting signal of all emitters
Coupling.
In a preferred embodiment, the current RSS value and it is each transmitting signal corresponding relationship especially by with
Under type determines:
If the transmitting signal for the emitter that number is i is xi=cos (wt+ θi), wherein θiIt is the transmitting dress that number is i
The initial phase set, w is the angular frequency for emitting signal, at the time of t is transmitting signal, then the expression formula of current RSS value are as follows:
Wherein, δiIt is the disturbed value numbering the emitter for being i and determining, φiIt is to compile
Number for i emitter and reception device between digital baseband input signal, i=1,2 ..., m, m be all emitters sum,
Y is current RSS value.
In a preferred embodiment, the initial value of the RSS early period value is preset default value, described preset scarce
Province be worth value range be (0,200].
In a preferred embodiment, the phase coupling estimation unit 300 is specifically used for:
Determine all disturbed value δ in each emitterjAnd all disturbed value δjCorresponding to disturbance interval table
Weight Qj；
To the weight Q of each emitterjNormalization, if disturbed value δ in normalized emitterjCorresponding power
Weight is Wj, pass through formulaW is calculatedj；
Determine the final disturbed value δ of the emitteri, the final disturbed value δiPass through formula δi=Wj·δjIt calculates
It obtains；
The reception signal of reception device after then completing phase coupling estimation is
In a preferred embodiment, the phase coupling estimation unit 300 is also used to:
Determine disturbance interval table, the disturbance interval table includes disturbed value, the corresponding weight of each disturbed value；
An emitter is randomly selected from all emitters, according to the random of the emitter randomly selected
Several comparison results with greedy probability determine disturbed value；
Disturbed value is determined according to the feedback information of the current RSS value of reception device and RSS early period value comparison result, specifically
Are as follows: when the information of reception device feedback is that current RSS value is greater than RSS early period value, the emitter retains respective initial phase
Upper increased disturbed value, is stepped up the weight of disturbed value in disturbance interval table, and adjusting the greedy probability is 1, otherwise, institute
It states emitter and gives up increased disturbed value in respective initial phase, gradually reduce the weight of disturbed value in disturbance interval table, and adjust
The whole greedy probability；
After all emitters have determined disturbed value, all emitters feed back the fixed information of disturbed value.With
Toilet states reception device and carries out phase coupling estimation.
Although the description of the disclosure is quite detailed and especially several embodiments are described, it is not
Any of these details or embodiment or any specific embodiments are intended to be limited to, but should be considered as is by reference to appended
A possibility that claim provides broad sense in view of the prior art for these claims explanation, to effectively cover the disclosure
Preset range.In addition, the disclosure is described with inventor's foreseeable embodiment above, its purpose is to be provided with
Description, and those equivalent modifications that the disclosure can be still represented to the unsubstantiality change of the disclosure still unforeseen at present.
Claims (10)
1. a kind of distributed beams forming method characterized by comprising
Determine the corresponding relationship of current RSS value and the current RSS value and each transmitting signal；
The size for comparing current RSS value Yu RSS early period value, when the current RSS value is greater than RSS early period value, the reception dress
It sets using current RSS value as RSS value early period, Xiang Suoshu emitter feedback RSS value has the information of update；Otherwise, the reception
Device maintains RSS early period value constant, the information that Xiang Suoshu emitter feedback RSS early period value remains unchanged；
The disturbed value for determining all emitters when current RSS value maximum has determined that when all emitters feed back disturbed value
Information after, the reception device carries out phase coupling estimation to the transmitting signals of all emitters.
2. a kind of distributed beams forming method according to claim 1, which is characterized in that the current RSS value and each
The corresponding relationship of a transmitting signal is determined especially by following manner:
If the transmitting signal for the emitter that number is i is xi=cos (wt+ θi), wherein θiIt is the emitter that number is i
Initial phase, w is the angular frequency for emitting signal, at the time of t is transmitting signal, then the expression formula of current RSS value are as follows:
Wherein, δiIt is the disturbed value numbering the emitter for being i and determining, φiBe number be i
Emitter and reception device between digital baseband input signal, i=1,2 ..., m, m be all emitters sum, y be work as
Preceding RSS value.
3. a kind of distributed beams forming method according to claim 1, which is characterized in that at the beginning of the RSS early period value
Initial value be preset default value, the preset default value value range be (0,200].
4. a kind of distributed beams forming method according to claim 2, which is characterized in that the reception device is to all
The transmitting signal of emitter carries out the step of phase coupling estimation, specifically:
Determine all disturbed value δ in each emitterjAnd all disturbed value δjThe power corresponding to disturbance interval table
Value Qj；
To the weight Q of each emitterjNormalization, if disturbed value δ in normalized emitterjCorresponding weight is
Wj, it is calculated by the following formula and obtains Wj:
Determine the final disturbed value δ of the emitteri, the final disturbed value δiPass through formula δi=Wj·δjIt calculates
Out；
The reception signal of reception device after then completing phase coupling estimation is
5. a kind of distributed beams forming method according to claim 4, which is characterized in that the current RSS value of determination
When maximum the step of the disturbed value of all emitters, comprising:
Determine disturbance interval table, the disturbance interval table includes disturbed value, the corresponding weight of each disturbed value；
An emitter is randomly selected from all emitters, according to the random number of the emitter randomly selected with
The comparison result of greedy probability determines disturbed value；
Disturbed value is determined according to the feedback information of the current RSS value of reception device and RSS early period value comparison result, specifically: when
When the information of reception device feedback is that current RSS value is greater than RSS early period value, the emitter retains to be increased in respective initial phase
Disturbed value, be stepped up the weight of disturbed value in disturbance interval table, and adjusting the greedy probability is 1, otherwise, the transmitting
Device gives up increased disturbed value in respective initial phase, gradually reduces the weight of disturbed value in disturbance interval table, and described in adjustment
Greedy probability；
After all emitters have determined disturbed value, all emitters feed back the fixed information of disturbed value.
6. a kind of distributed beams molding machine characterized by comprising
Determination unit, for determining the corresponding relationship of current RSS value and the current RSS value and each transmitting signal；
Updating unit, for comparing the size of current RSS value Yu RSS early period value, when the current RSS value is greater than RSS early period value
When, for the reception device using current RSS value as RSS value early period, Xiang Suoshu emitter feedback RSS value has the information of update；
Otherwise, the reception device maintains RSS early period value constant, the information that Xiang Suoshu emitter feedback RSS early period value remains unchanged；
Phase coupling estimation unit, the disturbed value of all emitters when for determining current RSS value maximum, when all emitters are equal
After feeding back the fixed information of disturbed value, the reception device carries out phase coupling estimation to the transmitting signal of all emitters.
7. a kind of distributed beams molding machine according to claim 6, which is characterized in that the current RSS value and each
The corresponding relationship of a transmitting signal is determined especially by following manner:
If the transmitting signal for the emitter that number is i is xi=cos (wt+ θi), wherein θiIt is the emitter that number is i
Initial phase, w is the angular frequency for emitting signal, at the time of t is transmitting signal, then the expression formula of current RSS value are as follows:
Wherein, δiIt is the disturbed value numbering the emitter for being i and determining, φiBe number be i
Emitter and reception device between digital baseband input signal, i=1,2 ..., m, m be all emitters sum, y be work as
Preceding RSS value.
8. a kind of distributed beams molding machine according to claim 6 characterized by comprising the RSS early period value
Initial value be preset default value, the preset default value value range be (0,200].
9. a kind of distributed beams molding machine according to claim 7, which is characterized in that the phase coupling estimation unit
300 are specifically used for:
Determine all disturbed value δ in each emitterjAnd all disturbed value δjThe power corresponding to disturbance interval table
Value Qj；
To the weight Q of each emitterjNormalization, if disturbed value δ in normalized emitterjCorresponding weight is
Wj, it is calculated by the following formula and obtains Wj:
Determine the final disturbed value δ of the emitteri, the final disturbed value δiPass through formula δi=Wj·δjIt calculates
Out；
The reception signal of reception device after then completing phase coupling estimation is
10. a kind of distributed beams molding machine according to claim 6, which is characterized in that the phase coupling estimation unit
It is also used to:
Determine disturbance interval table, the disturbance interval table includes disturbed value, the corresponding weight of each disturbed value；
An emitter is randomly selected from all emitters, according to the random number of the emitter randomly selected with
The comparison result of greedy probability determines disturbed value；
Disturbed value is determined according to the feedback information of the current RSS value of reception device and RSS early period value comparison result, specifically: when
When the information of reception device feedback is that current RSS value is greater than RSS early period value, the emitter retains to be increased in respective initial phase
Disturbed value, be stepped up the weight of disturbed value in disturbance interval table, and adjusting the greedy probability is 1, otherwise, the transmitting
Device gives up increased disturbed value in respective initial phase, gradually reduces the weight of disturbed value in disturbance interval table, and described in adjustment
Greedy probability；
After all emitters have determined disturbed value, all emitters feed back the fixed information of disturbed value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910601420.8A CN110445524B (en) | 2019-07-04 | 2019-07-04 | Distributed beam forming method and device |
Applications Claiming Priority (1)
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| US20090233545A1 (en) * | 2008-03-11 | 2009-09-17 | Ilan Sutskover | Bidirectional iterative beam forming |
| US20140184446A1 (en) * | 2012-12-28 | 2014-07-03 | Korea Advanced Institute Of Science And Technology | Random perturbation-based beamforming method and apparatus for use in mobile communication system |
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| US20140184446A1 (en) * | 2012-12-28 | 2014-07-03 | Korea Advanced Institute Of Science And Technology | Random perturbation-based beamforming method and apparatus for use in mobile communication system |
| CN105306190A (en) * | 2015-12-08 | 2016-02-03 | 深圳大学 | Closed loop type phase synchronization method based on accumulated positive feedback, and distributed communication system |
| CN107241130A (en) * | 2017-06-13 | 2017-10-10 | 电子科技大学 | An a kind of bit feedback cooperative beam manufacturing process based on two time slots |
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