CN103475460B - Phase synchronization method in distributed beams shaping and system - Google Patents

Abstract

The present invention provides the Phase synchronization method of adjustment in the shaping of a kind of distributed beams, including: the N number of network A source node (SoNA) a) doing distributed beams shaping sends detection signal successively；B) network A destination node (DoNA) receives this detection signal, and obtains the first receiving phase and the received signal strength of each detection signal；C) DoNA calculates each first receiving phase reach the first phase adjustment amount needed for predetermined synchronous effect after synchronization control according to the first receiving phase and the received signal strength of each detection signal, and sends one group of first phase adjustment signal to each SoNA by the circular order returning again to the 1st SoNA from the 1st to N in the way of sending a single-bit signal to a SoNA every time；D) each SoNA adjusts signal according to first phase and adjusts the transmission phase place of the described detection signal that this SoNA is sent.Described method can reduce synchronization control required time and the energy consumed.

Description

Phase synchronization method in distributed beams shaping and system

Technical field

The present invention relates to wireless communication technology field, in particular it relates to during a kind of distributed beams shapes Phase synchronization method and system.Especially, the present invention is applicable to sensor network, cognition wireless network.

Background technology

Beam shaping is such a technology, and in the art, multiple antennas jointly form antenna array Row, are transmitted same signal, by regulating the beam shaping weight coefficient of every antenna so that certain The receiving end signal intensity of a little positions increases, meanwhile, and the receiving end signal strength reduction of other positions. Beam forming technique can improve signal to noise ratio, reduce interference, increase safety, expansion communication range.Tool Body is said, if keeping signal to noise ratio identical, then N root omnidirectional antenna does wave beam in the case of carrier phase synchronization Shape the gross energy only single omni consumed and directly transmit the catabiotic 1/N of signal, therefore Beam forming technique is used can greatly to save energy.In other words, in the case of consuming identical gross energy, Doing beam shaping can make signal to noise ratio improve N times.At a lot of wireless networks (such as GSM network, CDMA Network, LTE network, sensor network) in, communication terminal is the least and battery-powered, to energy Amount consumes very sensitive, and therefore, it is the most suitable for doing beam shaping.Such as, in sensor network, Owing to communication terminal is the least and power limited, single communication terminal the most even can not send signal to Base station farther out, needs multiple communication terminal to do beam shaping and just can send a signal to these base stations.Separately Outward, do beam shaping and can reduce the received signal strength of the receiving terminal on some direction, such that it is able to fall The low interference to direction receiving terminal, also reduces the probability that in the direction, signal is ravesdropping simultaneously.

Beam shaping is divided into centralized beam shaping and distributed beams to shape.In centralized beam shaping, The multiple antennas doing beam shaping are on an equipment.Such as, a mobile phone can configure many antennas Do beam shaping.The advantage of this method is that the signal that multiple antenna sends has identical carrier wave, holds very much Easily realizing the Phase synchronization of carrier wave, shortcoming is due to the restriction of mobile phone physical size, joins on single mobile phone Put multiple antenna to be difficulty with.In distributed beams shapes, the multiple antennas doing beam shaping are in not On same equipment.Such as, a mobile phone can configure an antenna, is joined together by scattered for a group mobile phone Form virtual aerial array and do beam shaping.The advantage of this method is, each equipment has only to one Root antenna, it is easy to realize.But has a problem in that the carrier wave of the signal sent from every antenna differing, Then these signals may be cancelled out each other when arriving receiving terminal, thus reduces the reception letter of signal receiving end Number intensity.Therefore, in distributed beams shapes, need to consider the Phase synchronization problem of signal.

Fig. 1 is schematic diagram, it is shown that have two wireless subnetworks the feelings deposited in a cordless communication network Condition.As it is shown in figure 1, a sub-network can be referred to as network A, another sub-network can be referred to as network B, its In, shaping if some communication equipments of network A join together to do distributed beams, these communication equipments can It is referred to as network A source node (SoNA, source node of network A), and network A receives wave beam The communication equipment of shaped signal can be referred to as network A destination node (DoNA, destination node of Network A), the communication equipment receiving beam-formed signal in network B can be referred to as network B destination node (DoNB, destination node of network B).Now, the beam-formed signal that SoNA sends For DoNA, it is desirable to the signal received, is useful signal, and is not for DoNB Wish the signal received, be interference signal.

Such as, in conventional wireless communication network and cognition wireless network the network deposited, conventional wireless is led to Communication network constitutes master network (the most above-mentioned network B), and cognition wireless network constitutes time network (the most above-mentioned network A).In order to effectively utilize frequency spectrum resource, cognition wireless network to share frequency with conventional wireless communication network Spectrum resource.Generally, the method for share spectrum resources has two kinds, and a kind of method is referred to as opportunistic spectrum and accesses (Opportunistic Spectrum Access, OSA), i.e. secondary network finds what master network wouldn't use Frequency spectrum resource, and utilize these idle frequency spectrum resources to communicate；Another kind of method referred to as parallel frequency spectrum connects Enter (Concurrent Spectrum Access, CSA), i.e. secondary network and master network use common frequency Spectrum, but secondary network is necessarily less than the value of regulation to the interference of master network.In above-mentioned CSA situation, should Ask time network to be capable of normal communication function, and reduce energy expenditure as far as possible, require again secondary net Network avoids interference master network as far as possible.Beam shaping just can meet above-mentioned requirements in time network.

When certain SoNA signal m (t) to be sent in network A, this SoNA can combine neighbouring N-1 Individual SoNA does beam shaping, is transmitted signal m (t).Illustrate as a example by amplitude modulation mode below. If signal m (t) is transmitted by the way of amplitude modulation by N number of SoNA, wherein, i-th SoNA institute The amplitude of carrier wave be Ai, angular frequency is ω, and the phase contrast of the local carrier relative to DoNA is γ_i,1, The phase contrast of the local carrier relative to DoNB is γ_i,2, the signal that i-th SoNA sends arrives DoNA Time used is τ_i,1, the time used by DoNB that arrives is τ_i,2, the scalable of the carrier wave of i-th SoNA is multiple Weight coefficient isThe smooth slow fading channel of i-th SoNA to the DoNA factor of influence to signal ForThe factor of influence of signal is by the smooth slow fading channel of i-th SoNA to DoNBThen the signal received by DoNA is:

$y_1\left(t\right)=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{a}_{i,1}{b}_i{A}_i{e}^{j(\mathrm{\ωt}+{\mathrm{\γ}}_{i,1}+{\mathrm{\θ}}_i+{\mathrm{\ψ}}_{i,1})}m(t-{\mathrm{\τ}}_{i,1})=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\sqrt{P_i}{a}_{i,1}{e}^{j(\mathrm{\ωt}+{\mathrm{\Φ}}_{i,1})}m(t-{\mathrm{\τ}}_{i,1})---\left(1\right)$

Wherein,The power of signal, Φ is sent for i-th SoNA_i,1=γ_i,1+θ_i+ψ_i,1Connect for DoNA The receiving phase of the signal from i-th SoNA received；And the signal received by DoNB is:

$y_2\left(t\right)=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{a}_{i,2}{b}_i{A}_i{e}^{j(\mathrm{\ωt}+{\mathrm{\γ}}_{i,2}+{\mathrm{\θ}}_i+{\mathrm{\ψ}}_{i,2})}m(t-{\mathrm{\τ}}_{i,2})=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\sqrt{P_i}{a}_{i,2}{e}^{j(\mathrm{\ωt}+{\mathrm{\Φ}}_{i,2})}m(t-{\mathrm{\τ}}_{i,2})---\left(2\right)$

Wherein, Φ_i,2=γ_i,2+θ_i+ψ_i,2Receiving phase for the signal from i-th SoNA that DoNB receives.

DoNA obtains signal after being demodulated the signal received:

${y_1}^{\′}\left(t\right)=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\sqrt{P_i}{a}_{i,1}{e}^{{\mathrm{j\Φ}}_{i,1}}m(t-{\mathrm{\τ}}_{i,1})---\left(3\right)$

DoNB obtains signal after being demodulated the signal received:

${y_2}^{\′}\left(t\right)=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\sqrt{P_i}{a}_{i,2}{e}^{{\mathrm{j\Φ}}_{i,2}}m(t-{\mathrm{\τ}}_{i,2})---\left(4\right)$

Knowable to formula (3), by regulation Φ_i,1, make Φ_i,1=constant (1≤i≤N), can make DoNA Signal (i.e. useful signal) maximum intensity received, due to Φ_i,1=γ_i,1+θ_i+ψ_i,1, and only θ_i (phase place of the complex weighting coefficients of the carrier wave of the most each SoNA) is adjustable, therefore, every by regulation The θ of individual SoNA_i, the useful signal maximum intensity that DoNA receives can be made.It addition, from formula (4) understand, by regulation Φ_i,2, signal (i.e. the disturbing signal) intensity that DoNB receives can be made Minimize, and Φ_i,2=γ_i,2+θ_i+ψ_i,2, and only θ_i(the phase of the complex weighting coefficients of the carrier wave of the most each SoNA Position) it is adjustable, therefore, by regulating the θ of each SoNA_i, DoNB can be made to receive The intensity of interference signal minimizes.Therefore, according to actual requirement, by regulating the θ of each SoNA_i, The maximum intensity when signal that the SoNA doing beam shaping can be made to be sent arrives DoNA, or make this letter Number minimum to the interference of DoNB, or can be taken into account both.

Non-patent literature 1(Mudumbai R, Hespanha J, Madhow U et al., Scalable feedback control for distributed beamforming in sensor networks,International Symposium on Information Theory (ISIT), Adelaide2005, p137-141) propose a kind of with Machine adjusts the single bit feedback algorithm (hereinafter referred single-bit algorithm) of source node phase place, and this algorithm is each Slot requirements does institute's active node of beam shaping and jointly destination node is sent signal, and destination node detects Feedback signal is retransmited after total received signal strength (Receive Signal Strength, RSS).This Algorithm realizes simple, but convergence rate is unhappy.When timeslot number is equal to the source node quantity of 5 times, purpose The RSS of node is only the 75% of its maximum.It addition, in the process of the carrier phase synchronizing each source node The middle energy needing to consume is the biggest.

Summary of the invention

The present invention is to make to solve above-mentioned technical problem present in prior art, it is intended that Phase synchronization method of adjustment in providing a kind of distributed beams to shape and system, to reduce synchronization control institute Take time, reduce the energy that synchronization control is consumed；And make certain sub-network is done the source node of beam shaping Interference to another sub-network reduces.

According to an aspect of the present invention, it is provided that the Phase synchronization adjustment side in the shaping of a kind of distributed beams Method, the method includes:

A) N number of network A source node (SoNA) of distributed beams shaping is done according to from the 1st SoNA Order to n-th SoNA sends detection signal successively, and wherein, N is natural number；

B) network A destination node (DoNA) receives the detection signal that described N number of SoNA is sent, And obtain the first receiving phase and first received signal strength of the detection signal that each SoNA is sent；

C) described DoNA receives signal according to first receiving phase and first of each detection signal obtained First phase adjustment amount needed for each first receiving phase described in Strength co-mputation, in order to reach after synchronization control To predetermined synchronous effect, and return again to the 1st SoNA according to from the 1st SoNA to n-th SoNA Circular order to send out to each SoNA in the way of a SoNA sends a single-bit signal every time One group of orderly first phase is sent to adjust signal, wherein, corresponding with each SoNA one group orderly the One phase adjustment signal comprises the information of the described first phase adjustment amount corresponding with this SoNA；And

D) each SoNA adjusts, according to its one group of orderly first phase received, the institute that signal is comprised The information stating first phase adjustment amount adjusts the transmission phase place of the described detection signal that this SoNA is sent, To obtain the transmission phase place after the synchronization control of this detection signal.

Preferably, described detection signal is with this locality to the same frequency of each SoNA of a simple radical band signal The band signal that carrier wave produces after being modulated.

Preferably, described DoNA uses two local carriers to enter each described detection signal received Row coherent demodulation, thus obtain the first receiving phase and first received signal strength of this detection signal, its In, the first receiving phase of described each detection signal is limited in the angular range of 2 π sizes.

Preferably, described predetermined synchronous effect is:

Wherein, Φ_i,1And S_i,1The detection that i-th SoNA that respectively described DoNA is obtained is sent First receiving phase of signal and the first received signal strength, ΔΦ_i,1For described first receiving phase Φ_i,1's First phase adjustment amount, Φ '_i,1=Φ_i,1-ΔΦ_i,1I-th SoNA obtained by described DoNA is sent Detection signal synchronization control after the first receiving phase, 1≤i≤N.

It is further preferred that obtain described first receiving phase Φ_i,1First phase adjustment amount ΔΦ_i,1(1≤ I≤N) process include:

1. according to from the first receiving phase Φ_1,1To the first receiving phase Φ_N,1Return again to the first receiving phase Φ_1,1 Circular order each first receiving phase described is carried out successive adjustment one by one, wherein, to Φ_i,1Kth The adjustment amount of secondary adjustment is 2 π a_ik/2^k, k >=0, and as k=0, a_ikIt is 0, when k >=1, a_ikFor Φ_i,1The kth term coefficient of the binary digital expansion of an integer of/2 π；

When 2. producing the adjustment amount of each predetermined number, calculate Φ now_i,1Total adjustment amount:

${\mathrm{\Δ\Φ}}_{i,1}\left[K_i\right]=2\mathrm{\π}\underset{k=0}{\overset{K_i}{\mathrm{\Σ}}}\frac{a_{\mathrm{ik}}}{2^k}$

Wherein, K_iRepresent the first receiving phase Φ_i,1Adjusted number of times, 1≤i≤N, and calculate now Following values:

${\mathrm{RSS}}_1^{\′}[K_i,1\≤i\≤N]=\frac{\left|\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\sqrt{S_{i,l}}{e}^{j\left({\mathrm{\Δ\Φ}}_{i,1}\right[K_i\left]\right)}\right|}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\sqrt{S_{i,1}}}$

3. the RSS ' calculated when producing the adjustment amount of certain predetermined number₁[K_i, 1≤i≤N] and more than or equal to institute When stating predetermined synchronization threshold, described acquisition the first receiving phase Φ_i,1First phase adjustment amount ΔΦ_i,1(1≤ I≤N) process terminate, and ΔΦ_i,1For ΔΦ now_i,1[K_i]。

Preferably, send one group of orderly first phase at described DoNA to each SoNA and adjust signal After, also include that described DoNA sends synchronization control end signal to described N number of SoNA.

Preferably, if it is { a that one group of orderly first phase that i-th SoNA receives adjusts signal_ik|0 ≤k≤K_i, K_iFor integer, and during k=0, a_ikWhen=0, k >=1, a_ik=1 or 0}, then this SoNA institute Corresponding described first phase adjustment amount ΔΦ_i,1For:

${\mathrm{\Δ\Φ}}_{i,1}=2\mathrm{\π}\underset{k=0}{\overset{K_i}{\mathrm{\Σ}}}\frac{a_{\mathrm{ik}}}{2^k}$

Wherein, 1≤i≤N.

According to a further aspect in the invention, it is provided that the Phase synchronization during another kind of distributed beams shapes adjusts Method, the method includes:

A) N number of network A source node (SoNA) of distributed beams shaping is done according to from the 1st SoNA Order to n-th SoNA sends detection signal successively, and wherein, N is natural number；

B) network A destination node (DoNA) receives the detection signal that described N number of SoNA is sent, And obtain the first receiving phase detecting signal and the first received signal strength that each SoNA is sent, Meanwhile, network B destination node (DoNB) receives the detection signal that described N number of SoNA is sent, And obtain the second receiving phase and second received signal strength of the detection signal that each SoNA is sent；

C) described DoNA receives signal according to first receiving phase and first of each detection signal obtained First phase adjustment amount needed for each first receiving phase described in Strength co-mputation, in order to reach after synchronization control To predetermined synchronous effect, and return again to the 1st SoNA according to from the 1st SoNA to n-th SoNA Circular order by every time to a SoNA with in the way of described DoNB sends a single-bit signal To each SoNA send one group of orderly first phase adjust signal simultaneously to DoNB send respectively with respectively The first phase that each group corresponding for individual SoNA is orderly adjusts signal, wherein, corresponding with each SoNA One group of orderly first phase adjusts signal packet containing the described first phase adjustment amount corresponding with this SoNA Information；

D) each SoNA adjusts, according to its one group of orderly first phase received, the institute that signal is comprised The information stating first phase adjustment amount adjusts the transmission phase place of the described detection signal that this SoNA is sent, To obtain the transmission phase place after the synchronization control of this detection signal, and, described DoNB receives according to it To the orderly first phase of corresponding with each SoNA group adjust the first phase that signal comprised and adjust Whole amount information adjusts the second receiving phase detecting signal that this SoNA of described DoNB acquisition is sent, To obtain the second receiving phase after the synchronization control of this detection signal；

E) described DoNB according to the second receiving phase after the synchronization control of each detection signal obtained and Described second received signal strength calculates the second phase needed for the second receiving phase after described each synchronization control Position adjustment amount, in order to reach predetermined interference effect after interference adjusts, and send one to each SoNA Second phase adjusts signal, and this second phase adjusts signal packet containing described second phase corresponding with this SoNA The information of position adjustment amount；

F) each SoNA according to its described second phase received adjust signal comprised described second After the information of phase adjustment adjusts the described synchronization control of the described detection signal that this SoNA is sent Send phase place, to obtain the transmission phase place after the interference of this detection signal adjusts.

Preferably, described predetermined interference effect is:

Φ″_i,2=Φ′_i,2+ΔΦ_i,2=Φ_i,2-ΔΦ_i,1+ΔΦ_i,2

Wherein, Φ_i,2And S_i,2The detection that i-th SoNA that respectively described DoNB is obtained is sent Second receiving phase of signal and the second received signal strength, ΔΦ_i,1I-th obtained by described DoNA The described first receiving phase Φ of the detection signal that individual SoNA is sent_i,1First phase adjustment amount, Φ′_i,2=Φ_i,2-ΔΦ_i,1For the second receiving phase after the synchronization control corresponding with i-th SoNA, ΔΦ_i,2For The described second phase adjustment amount corresponding with i-th SoNA, Φ "_i,2Do for corresponding with i-th SoNA Disturb the second receiving phase after adjustment, 1≤i≤N.

It is further preferred that obtain the described second phase adjustment amount ΔΦ corresponding with i-th SoNA_i,2(1 ≤ i≤N) process include:

1. the interference vector after the m time interference corresponding with i-th SoNA adjusts is calculated according to inductive methodPhase angle Φ "_i,2[m] (1≤i≤N, m >=1), it may be assumed that

First, it is thus achieved that the interference vector 0th interference adjustment after corresponding with i-th SoNA namely synchronization Interference vector after adjustment $v_i\left[0\right]=\sqrt{S_{i,2}}{e}^{j{\mathrm{\Φ}}_{i,2}^{\′\′}\left[0\right]}=\sqrt{S_{i,2}}{e}^{j{\mathrm{\Φ}}_{i,2}^{\′}},(1\≤i\≤N),$ And the 0th interference adjusts After total interference vector namely synchronization control after always disturb vector:

$V_N\left[0\right]=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{v}_i\left[0\right]$

Second, if obtaining the interference vector after the m-1 time interference corresponding with i-th SoNA adjustsAnd the m-1 time interference adjust after always disturb vector:

$V_N[m-1]=\underset{i=1}{\overset{N}{\mathrm{\Σ}}}{v}_i[m-1]$

Interference after the m time then corresponding with i-th SoNA interference adjusts is vectorial's Phase angle Φ "_i,2The calculating process of [m] (1≤i≤N) including:

A) obtainCorresponding interference vector v_p[m-1], 1≤p ≤N；

B) vector v is calculated_p[m-1] rotates counterclockwise to and vector-(V_N[m-1]-v_p[m-1]) the consistent rotation in direction Corner Θ [m-1]；

C) for i=p, Φ is made "_i,2[m]=Φ″_i,2[m-1]+Θ [m-1], for i ≠ p, makes Φ "_i,2[m]=Φ″_1,2[m-1],

If 2. as m=M (M is the natural number determined), had:

Then obtain the described second phase adjustment amount ΔΦ corresponding with i-th SoNA_i,2Process terminate, and with The described second phase adjustment amount ΔΦ that i-th SoNA is corresponding_i,2=Φ″_i,2[M]-Φ′_i,2(1≤i≤N).

Described network A can be sensor network or cognition wireless network, and described network B can be tradition Wireless network.

In accordance with a further aspect of the present invention, it is provided that the Phase synchronization during a kind of distributed beams shapes adjusts system System, comprising: do N number of network A source node (SoNA) and the network A mesh that distributed beams shapes Node (DoNA), wherein, N is natural number, each SoNA be configured with the first transmitting element, One receives unit and first phase adjustment unit, and DoNA is configured with the second transmitting element, the second reception list Unit, the second demodulating unit and the second computing unit, and,

First transmitting element of N number of SoNA is according to the order from the 1st SoNA to n-th SoNA Send detection signal successively,

The second reception unit of DoNA receives the inspection that first transmitting element of described N number of SoNA is sent Survey signal, and first transmitting element of the second demodulating unit each SoNA of acquisition of DoNA is sent Detection the first receiving phase of signal and the first received signal strength,

The first of each detection signal that second computing unit of DoNA is obtained according to the second demodulating unit connects Receive phase place and the first received signal strength calculates the first phase needed for described each first receiving phase and adjusts Amount, in order to reach predetermined synchronous effect after synchronization control,

Second transmitting element of DoNA returns again to the 1st according to from the 1st SoNA to n-th SoNA The circular order of individual SoNA by every time in the way of a SoNA sends a single-bit signal to each SoNA sends one group of orderly first phase and adjusts signal, and wherein, one group corresponding with each SoNA has The first phase of sequence adjusts the signal packet information containing the described first phase adjustment amount corresponding with this SoNA,

It is orderly that the first phase adjustment unit of each SoNA receives often organizing of receiving of unit according to first The information of the described first phase adjustment amount that first phase adjustment signal is comprised adjusts this SoNA and is sent The transmission phase place of described detection signal, to obtain the transmission phase place after the synchronization control of this detection signal.

According to another aspect of the invention, it is provided that the Phase synchronization during a kind of distributed beams shapes adjusts system System, comprising: do N number of network A source node (SoNA), the network A purpose that distributed beams shapes Node (DoNA) and network B destination node (DoNB), wherein, N is natural number, each SoNA Being configured with the first transmitting element, first receive unit and first phase adjustment unit, DoNA is configured with the Two transmitting elements, second receiving unit, the second demodulating unit and the second computing unit, DoNB is configured with the Three transmitting elements, the 3rd reception unit, the 3rd demodulating unit, third phase adjustment unit and the 3rd calculate Unit, and,

First transmitting element of N number of SoNA is according to the order from the 1st SoNA to n-th SoNA Send detection signal successively,

The second reception unit of DoNA receives the inspection that first transmitting element of described N number of SoNA is sent Survey signal, and second demodulating unit of DoNA obtains the of the detection signal that each SoNA is sent One receiving phase and the first received signal strength, meanwhile, the 3rd reception unit of DoNB receives described N The detection signal that first transmitting element of individual SoNA is sent, and the 3rd demodulating unit of DoNB obtains Obtain the second receiving phase and second received signal strength of the detection signal that each SoNA is sent,

The of each detection signal that second computing unit of described DoNA is obtained according to the second demodulating unit One receiving phase and the first received signal strength calculate the first phase needed for described each first receiving phase and adjust Whole amount, in order to reach predetermined synchronous effect after synchronization control, and the second transmitting element is according to from the 1st Individual SoNA returns again to the circular order of the 1st SoNA with every time to a SoNA to n-th SoNA One group orderly the is sent to each SoNA with sending the mode of a single-bit signal to described DoNB One phase adjustment signal sends to DoNB simultaneously and corresponding with each SoNA respectively each organizes orderly first Phase adjustment signal, wherein, the one group orderly first phase corresponding with each SoNA adjusts signal packet Containing the information of the described first phase adjustment amount corresponding with this SoNA,

It is orderly that the first phase adjustment unit of each SoNA receives unit receive one group according to first The information of the described first phase adjustment amount that first phase adjustment signal is comprised adjusts this SoNA and is sent The transmission phase place of described detection signal, to obtain the transmission phase place after the synchronization control of this detection signal, Further, the third phase adjustment unit of described DoNB according to the 3rd receive unit receive with each What SoNA was corresponding often organizes the first phase adjustment amount information tune that orderly first phase adjustment signal is comprised Second receiving phase of the detection signal that this SoNA that whole described DoNB obtains is sent, is somebody's turn to do to obtain The second receiving phase after the synchronization control of detection signal,

3rd computing unit of described DoNB is according to the second reception phase after the synchronization control of each detection signal Position and described second received signal strength calculate needed for the second receiving phase after described each synchronization control the Two phase adjustment amount, in order to reach predetermined interference effect after interference adjusts, and the 3rd transmitting element to Each SoNA sends a second phase and adjusts signal, and this second phase adjusts signal packet and contains and this SoNA The information of corresponding described second phase adjustment amount,

The first phase adjustment unit of each SoNA receives, according to first, described second phase that unit receives It is described that position adjusts that the information of described second phase adjustment amount that signal comprised adjusts that this SoNA sent Detection signal described synchronization control after transmission phase place, with obtain this detection signal interference adjust after Send phase place.

Phase from the description above and knowable to simulation result, in distributed beams of the present invention shaping Bit synchronization method of adjustment and system can reduce synchronization control required time and reduce what synchronization control was consumed Energy, and can make the source node doing beam shaping in certain sub-network that the interference of another sub-network is reduced.

Accompanying drawing explanation

According to the following detailed description carried out referring to the drawings, the above and other purpose of the present invention, feature and Advantage will become apparent from.In the accompanying drawings:

Fig. 1 is schematic diagram, it is shown that do the cordless communication network of beam shaping；

Fig. 2 is flow chart, it is shown that during the distributed beams described in one embodiment of the present of invention shapes Phase synchronization method of adjustment；

Fig. 3 is schematic diagram, it is shown that makes each first receiving phase reach predetermined after synchronization control and synchronizes effect The computational methods of the first phase adjustment amount needed for Guo；

Fig. 4 is flow chart, it is shown that during the distributed beams described in an alternative embodiment of the invention shapes Phase synchronization method of adjustment；

Fig. 5 is vector diagram, respectively illustrates v according to the vector representation of plural number_i[m-1]、V_N[m-1] and V_N[m-1]-v_iA kind of spatial relationship between [m-1]；

Fig. 6 is vector diagram, respectively illustrates v according to the vector representation of plural number_i[m-1]、V_N[m-1] and V_N[m-1]-v_iAnother kind of spatial relationship between [m-1]；

Fig. 7 is block diagram, it is shown that during the distributed beams described in one embodiment of the present of invention shapes Phase synchronization adjusts system；

Fig. 8 is block diagram, it is shown that during the distributed beams described in an alternative embodiment of the invention shapes Phase synchronization adjust system；

Fig. 9 simulation curve figure, it is shown that the phase place during the distributed beams described in an embodiment shapes is same Random single-bit algorithm (R1BF) in successive step method (referred to as GAP algorithm) and non-patent literature 1 Contrast effect；

Figure 10 simulation curve figure, it is shown that the RSS ' of GAP algorithm under additive Gaussian noise difference signal to noise ratio₁ Change with lock in time；

Figure 11 simulation curve figure, it is shown that the distributed beams described in an alternative embodiment of the invention shapes In Phase synchronization method of adjustment to the AF panel of DoNB to-60dB after, to the SoNA's synchronized RSS′₁Impact.

The most identical label indicates similar or corresponding feature or function.

Detailed description of the invention

In the following description, for purposes of illustration, complete in order to provide one or more embodiments Foliation solution, elaborates many details.It may be evident, however, that these details can also there is no In the case of realize these embodiments.It addition, for the ease of describing one or more embodiments, known Structure and equipment illustrate in block form an.

In the present specification and claims, express statement " to send out to SoNA or DoNA or DoNB The number of delivering letters " actually refer to send the signal received for SoNA or DoNA or DoNB.It addition, sequence Number first, second, and third grade is only used for distinguishing similar device, unit, signal and physical quantity etc., Not represent importance or the order of these devices, unit, signal and physical quantity etc..

It addition, the Phase synchronization problem of N number of signal beam doing beam shaping can be attributed to signal carrier Phase synchronization problem, say, that it is that carrier wave arrives receiving terminal that Phase synchronization in beam shaping adjusts Time the synchronization control of phase place, it doesn't matter with m (t), and also it doesn't matter with the modulation system of m (t).

Fig. 2 is flow chart, it is shown that during the distributed beams described in one embodiment of the present of invention shapes Phase synchronization method of adjustment.As in figure 2 it is shown, the distributed beams described in one embodiment of the present of invention becomes Phase synchronization method of adjustment in shape comprises the steps:

First, in step slo, N number of network A source node (SoNA) that distributed beams shapes is done Sending detection signal successively according to the order from the 1st SoNA to n-th SoNA, wherein, N is Natural number.The sequence number of described N number of SoNA is determined in advance according to a preconcerted arrangement, and makes to participate in each side of communication All know this sequence number.Described detection signal is by the simple radical band signal basis to the same frequency of each SoNA The band signal that ground carrier wave produces after being modulated.Described simple signal is phase for each SoNA With, can be analogue signal or digital signal.It addition, the modulation system of signal can be analogue signal The frequency modulation of use, angle modulation mode, it is also possible to be the on-off keying of digital signal use, frequency shift keying, shifting Phase keying mode.In order to simply count, in this manual, described simple signal is the letter that an amplitude is constant Number.

Then, in step S20, network A destination node (DoNA) receives described N number of SoNA The detection signal sent, and obtain the detection signal that each SoNA sent the first receiving phase and First received signal strength.

Described DoNA can use two local carriers that each detection signal received carries out relevant solution Adjust, thus obtain the first receiving phase and first received signal strength of this detection signal, wherein, described First receiving phase of each detection signal may be limited in the angular range of 2 π sizes, it is preferable that limits [0,2 π) in the range of.

Specifically, according to formula (1), if the i-th that DoNA receives (1≤i≤N) SoNA The detection signal s sent_i,1(t) be:

$s_{i,1}\left(t\right)=\sqrt{P_i}{a}_{i,1}{e}^{j(\mathrm{\ωt}+{\mathrm{\Φ}}_{i,1})}$

Wherein, the first receiving phase Φ of this detection signal_i,1=γ_i,1+θ_i+ψ_i,1.To detection signal s_i,1(t) carry out Demodulation, it is possible to obtain Φ_i,1And the first received signal strength of this detection signal

In one embodiment, DoNA can obtain the first reception of detection signal by coherent demodulation Phase place Φ_i,1.Specifically, DoNA can be the most right by two local carriers cos (ω t) and cos (ω t+ pi/2) Detection signal s_i,1T () carries out coherent demodulation, wherein, the initial phase of local carrier cos (ω t) of DoNA is set to Zero, the phase contrast γ of the local carrier relative to DoNA of the carrier wave used by above-mentioned i-th SoNA_i,1 Just with this local carrier of DoNA as benchmark.By local carrier cos (ω t) to detection signal s_i,1T () obtains after carrying out coherent demodulationBy local carrier cos (ω t+ pi/2) to detection Signal_si1T () obtains after carrying out coherent demodulationSo that

WhenTime,

${\mathrm{\Φ}}_{i,1}=\arccos (s_{i,1}^1/\sqrt{{\left(s_{i,1}^1\right)}^2+{\left(s_{i,1}^2\right)}^2})$

WhenTime,

${\mathrm{\Φ}}_{i,1}=2\mathrm{\π}-\arccos (s_{i,1}^1/\sqrt{{\left(s_{i,1}^1\right)}^2+{\left(s_{i,1}^2\right)}^2})$

In the above-described embodiments, can be by Φ_i,1It is limited in 0≤Φ_i,1In the range of ＜ 2 π (1≤i≤N), But it is not limited to this, can essentially be by Φ_i,1It is limited in the angular range of any 2 π sizes.

Referring again to Fig. 2, then, in step s 30, described DoNA is respectively detected letter according to obtain Number the first receiving phase and the first received signal strength calculate first needed for described each first receiving phase Phase adjustment, in order to reach predetermined synchronous effect after synchronization control, i.e. calculates described each first and receives Phase place reaches the first phase adjustment amount needed for predetermined synchronous effect after synchronization control.

Specifically, described predetermined synchronous effect can be:

Wherein, Φ_i,1And S_i,1The detection that i-th SoNA that respectively described DoNA is obtained is sent First receiving phase of signal and the first received signal strength, ΔΦ_i,1For described first receiving phase Φ_i,1's First phase adjustment amount, Φ '_i,1=Φ_i,1-ΔΦ_i,1I-th SoNA obtained by described DoNA is sent Detection signal synchronization control after the first receiving phase, 1≤i≤N.

Described predetermined synchronization threshold can be set according to actual communicating requirement, and its value is in (0,1) In the range of, for example, it is possible to be set greater than or equal to 0.9.

In other words, as the first receiving phase Φ ' of each after synchronization control_i,1=Φ_i,1-ΔΦ_i,1Closer to each other so that In time approximating a constant, RSS '₁Can be more than 0.9, in the ideal case, RSS '₁Can close to 1, It is to say, the useful signal intensity that DoNA receives can be made close to maximizing.

Fig. 3 is schematic diagram, it is shown that make each first receiving phase reach above-mentioned predetermined same after synchronization control The computational methods of the first phase adjustment amount needed for step effect.As shown in Figure 3, it is thus achieved that the first receiving phase Φ_i,1 First phase adjustment amount ΔΦ_i,1The process of (1≤i≤N) may include that

1. according to from the first receiving phase Φ_1,1To the first receiving phase Φ_N,1Return again to the first receiving phase Φ_1,1 Circular order each first receiving phase described is carried out one by one successive adjustment (such as the horizontal arrow in Fig. 3 Shown in head), wherein, to Φ_i,1The adjustment amount that adjusts of kth time be 2 π a_ik/2^k, k >=0, and work as k=0 Time, a_ikIt is 0, when k >=1, a_ikFor Φ_i,1The kth term coefficient of the binary digital expansion of an integer of/2 π.

For example, if Φ_i,1=5/4 π, then Φ_i,1The binary digital expansion of an integer of/2 π is:

$\frac{5}{4}\mathrm{\π}/2\mathrm{\π}=\frac{5}{8}=\frac{1}{2^1}+\frac{0}{2^2}+\frac{1}{2^3}+\frac{0}{2^4}+\frac{0}{2^5}+...$

Wherein, a_i1=1, a_i2=0, a_i3=1, a_i4=0, a_ik=0(k >=4).It should be noted that above-mentioned Φ_i,1Adjusted The practical significance of journey is, after adjusting (the most not yet adjusting) at the 0th time, and Φ_i,1Be distributed in [0,2 π) in the range of, After adjusting at the 1st time, make Φ_i,1Be distributed in [0, π) in the range of, after adjusting at the 2nd time, make Φ_i,1Distribution [0, pi/2) in the range of, after adjusting at the 3rd time, make Φ_i,1Be distributed in [0, π/4) in the range of etc., thus Make Φ_i,1Between difference more and more less.

When 2. producing the adjustment amount of each predetermined number, calculate Φ now_i,1Total adjustment amount:

${\mathrm{\Δ\Φ}}_{i,1}\left[K_i\right]=2\mathrm{\π}\underset{k=0}{\overset{K_i}{\mathrm{\Σ}}}\frac{a_{\mathrm{ik}}}{2^k}$

Wherein, K_iRepresent the first receiving phase Φ_i,1Adjusted number of times, 1≤i≤N, and calculate now Following values:

${\mathrm{RSS}}_1^{\′}[K_i,1\≤i\≤N]=\frac{\left|\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\sqrt{S_{i,1}}{e}^{j\left({{\mathrm{\Φ}}_{i,1}-\mathrm{\Δ\Φ}}_{i,1}\right[K_i\left]\right)}\right|}{\underset{i=1}{\overset{N}{\mathrm{\Σ}}}\sqrt{S_{i,1}}}$

In the example shown in Fig. 3, when producing, first predetermined number is (N number of, such as the right side in Fig. 3 Shown in shadow positions) adjustment amount time, calculate each Φ the most now_i,1Total adjustment amount and RSS′₁[K_i,1≤i≤N].When producing second predetermined number, (N+3 is individual, such as the bottom shadow positions in Fig. 3 Shown in) adjustment amount time, then calculate each Φ the most now_i,1Total adjustment amount and RSS '₁[K_i, 1≤i≤N], Dotted line frame in Fig. 3, vertical arrow and summation expression formula show Φ now_i,1The calculating of total adjustment amount. It should be noted that, the moment of the adjustment amount producing each predetermined number can be determined according to practical situation.Such as, In one example, can be often to produce an adjustment amount, just calculate the most each Φ_i,1Total adjustment amount and RSS′₁[K_i,1≤i≤N].In another example, can be often to produce N number of adjustment amount, just calculate the most each Φ_i,1Total adjustment amount and RSS '₁[K_i,1≤i≤N]。

3. the RSS ' calculated when producing the adjustment amount of certain predetermined number₁[K_i, 1≤i≤N] and more than or equal to institute When stating predetermined synchronization threshold, described acquisition the first receiving phase Φ_i,1First phase adjustment amount ΔΦ_i,1(1≤ I≤N) process terminate, and ΔΦ_i,1For ΔΦ now_i,1[K_i]。

In the example shown in Fig. 3, the RSS ' calculated when producing N+3 adjustment amount₁[K_i, 1≤i≤N] and big In equal to described predetermined synchronization threshold, then, Φ_i,1First phase adjustment amount ΔΦ_i,1It is exactly Φ now_i,1 Total adjustment amount.

Obtaining described first receiving phase Φ_i,1First phase adjustment amount ΔΦ_i,1Afterwards, as in figure 2 it is shown, In step s 40, SoNA returns again to the 1st SoNA according to from the 1st SoNA to n-th SoNA Circular order to send out to each SoNA in the way of a SoNA sends a single-bit signal every time One group of orderly first phase is sent to adjust signal, wherein, corresponding with each SoNA one group orderly the One phase adjustment signal comprises the information of the described first phase adjustment amount corresponding with this SoNA.

The order the most gradually sending single-bit signal mentioned here the most gradually produces with above describe The sequence consensus of adjustment amount.The one group of orderly first phase adjustment signal sent to i-th SoNA is ΔΦ_i,1The front K of the binary digital expansion of an integer of/2 π_iIndividual coefficient { a_ik(0≤k≤K_i):

${\mathrm{\Δ\Φ}}_{i,1}\left[K_i\right]=2\mathrm{\π}\underset{k=0}{\overset{K_i}{\mathrm{\Σ}}}\frac{a_{\mathrm{ik}}}{2^k}$

It should be noted that can arrange, the one group of orderly first phase sent to each SoNA is adjusted First signal in entire signal is a_i0(a_i0=0), in this case, if altogether adjusting s(s < N) secondary Rear synchronization control process terminates, then corresponding for individual SoNA for i-th (s+1≤i≤N) Φ_i,1First phase adjust Whole amount ΔΦ_i,1It is zero (i.e. Φ_i,1Without adjusting), send an i.e. a of signal 0(to this SoNA_i0=0). Can also arrange, the one group of orderly first phase sent to each SoNA adjusts the first letter in signal Number it is a_i1(a_i1=1 or 0), in this case, if altogether adjusting s(s < N) secondary rear synchronization control mistake Journey terminates, then corresponding for individual SoNA for i-th (s+1≤i≤N) Φ_i,1First phase adjustment amount ΔΦ_i,1For Zero (i.e. Φ_i,1Without adjusting), do not send any signal to this SoNA.

At described DoNA after each SoNA sends one group of orderly first phase adjustment signal, described DoNA can send synchronization control end signal to described N number of SoNA, to show synchronization control process Terminate.Synchronization control end signal can be any signal different from single-bit signal, it is also possible to be pre- The no signal reception that timing is long.

Finally, in step s 50, one group of orderly first phase that each SoNA receives according to it The information adjusting the described first phase adjustment amount that signal is comprised adjusts the described inspection that this SoNA is sent Survey the transmission phase place of signal, to obtain the transmission phase place after the synchronization control of this detection signal.

Such as, if it is { a that one group of orderly first phase that i-th SoNA receives adjusts signal_ik|0≤k ≤K_i, K_iFor integer, and during k=0, a_ikWhen=0, k >=1, a_ik=1 or 0}, then corresponding to this SoNA Described first phase adjustment amount ΔΦ_i,1For:

${\mathrm{\&Delta;\&Phi;}}_{i,1}=2\mathrm{\&pi;}\underset{k=0}{\overset{K_i}{\mathrm{\&Sigma;}}}\frac{a_{\mathrm{ik}}}{2^k}$

Wherein, 1≤i≤N.For example, if one group of orderly first phase that the 1st SoNA receives is adjusted Entire signal be 0,1,0,1,0}, wherein, K₁=4, a₁₀=0, a₁₁=1, a₁₂=0, a₁₃=1, a₁₄=0, then

${\mathrm{\&Delta;\&Phi;}}_{\mathrm{1,1}}=2\mathrm{\&pi;}(\frac{1}{2^1}+\frac{0}{2^2}+\frac{1}{2^3}+\frac{0}{2^4})=\frac{5}{4}\mathrm{\&pi;}$

Usually, if i-th SoNA adjusts signal acquisition the according to its orderly first phase received One phase adjustment ΔΦ_i,1, then, this SoNA can use ΔΦ_i,1Adjust the transmission of its detection signal sent Phase place(seeing formula 1), thus obtain the transmission phase place after the synchronization control of this detection signalThen, if each SoNA uses the transmission phase place after synchronization controlSend signal, then the receiving phase of each detection signal that DoNA is obtained isAnd these receiving phases are very close to each other, so that The useful signal that DoNA is obtained reaches to maximize.

It should be noted that, during above-mentioned Phase synchronization adjusts, to use Φ '_i,1=Φ_i,1-ΔΦ_i,1Mode adjust Whole.But the invention is not restricted to this, as long as by each Φ_i,1In being adjusted to the narrowest same angular range it is Can, it may not be necessary to being adjusted in the narrowest angular range of 0 described in examples above.

The signal that N number of SoNA sends is useful signal when being received by DoNA, and is received by DoNB The most then for interference signal.Therefore, if regulating the carrier phase synchronization of N number of SoNA so that DoNA Received signal strength RSS₁Further contemplate the signal making N number of SoNA send during maximized simultaneously To the interference of DoNB less than if a certain predetermined interference threshold, then, at above-mentioned N number of SoNA by pre- When fixed order sends detection signal successively, receive described N number of as DoNB with DoNA the most one by one The detection signal that SoNA sends successively, and obtain the second receiving phase Φ of each detection signal_i,2With second Received signal strength S_i,2, and when each SoNA receives the single-bit signal that DoNA sends, DoNB Also this single-bit signal is received, and to adjust with each SoNAOrSame mode adjusts Φ_i,2。

After above-mentioned Phase synchronization regulation process completes, DoNB is according to second after its preserved synchronization control Receiving phase Φ '_i,2=Φ_i,2-ΔΦ_i,1Phase place is adjusted to each SoNA feedback interference respectively, so that N number of SoNA The signal sent is less than a certain predetermined interference threshold to the interference of DoNB.Although each SoNA is done Disturb adjustment and can affect the effect of the synchronization control being complete, but can be taken into account both.By hereafter It is the most little that emulation can be seen that interference adjusts the impact on synchronization control effect.In practice, as required Different stressing can be given.

Fig. 4 is flow chart, it is shown that during the distributed beams described in an alternative embodiment of the invention shapes Phase synchronization method of adjustment.As shown in Figure 4, the method comprises the steps:

First, in step slo, N number of network A source node (SoNA) that distributed beams shapes is done Sending detection signal successively according to the order from the 1st SoNA to n-th SoNA, wherein, N is Natural number.The sequence number of described N number of SoNA is determined in advance according to a preconcerted arrangement, and makes to participate in each side of communication All know this sequence number.Described detection signal is by the simple radical band signal basis to the same frequency of each SoNA The band signal that ground carrier wave produces after being modulated.Described simple signal is phase for each SoNA With, can be analogue signal or digital signal.It addition, the modulation system of signal can be analogue signal The frequency modulation of use, angle modulation mode, it is also possible to be the on-off keying of digital signal use, frequency shift keying, shifting Phase keying mode.For simple meter, in this manual, described simple signal is the signal that an amplitude is constant.

Then, in step S20 ' in, network A destination node (DoNA) receives described N number of SoNA The detection signal sent, and obtain the detection signal that each SoNA sent the first receiving phase and First received signal strength, meanwhile, network B destination node (DoNB) receives described N number of SoNA The detection signal sent, and obtain the detection signal that each SoNA sent the second receiving phase and Second received signal strength.

Described DoNA and DoNB can use two local carriers each described detection letter to receiving Number carry out coherent demodulation, thus obtain the first and second receiving phases of this detection signal respectively and receive letter Number intensity, wherein, the first and second receiving phases of described each detection signal may be limited to 2 π sizes In angular range, it is preferable that be limited in [0,2 π) in the range of.

Then, in step s 30, described DoNA is according to the first reception of each detection signal obtained Phase place and the first received signal strength calculate the first phase adjustment amount needed for described each first receiving phase, To reach predetermined synchronous effect after synchronization control, i.e. calculate described each first receiving phase in same step The first phase adjustment amount needed for predetermined synchronous effect is reached after whole.

Specifically, described predetermined synchronous effect can be:

Wherein, Φ_i,1And S_i,1The detection that i-th SoNA that respectively described DoNA is obtained is sent First receiving phase of signal and the first received signal strength, ΔΦ_i,1For described first receiving phase Φ_i,1's First phase adjustment amount, Φ '_i,1=Φ_i,1-ΔΦ_i,1I-th SoNA obtained by described DoNA is sent Detection signal synchronization control after the first receiving phase, 1≤i≤N.

Needed for described DoNA each first receiving phase of calculating reaches predetermined synchronous effect after synchronization control The process of first phase adjustment amount is above having been described (seeing Fig. 3 and description thereof), repeats no more here.

Then, in step S40 ' in, DoNA returns to n-th SoNA according to from the 1st SoNA again Return the circular order of the 1st SoNA with every time to a SoNA with to described DoNB one list of transmission The mode of bit signal sends one group of orderly first phase to each SoNA and adjusts signal, the most also to The first phase adjustment signal that respectively group is orderly that DoNB transmission is corresponding with each SoNA respectively, wherein, with One group of corresponding for each SoNA orderly first phase adjusts signal packet containing the institute corresponding with this SoNA State the information of first phase adjustment amount.DoNA sends first phase according to described order to each SoNA The process adjusting signal is the most also being described, and repeats no more here.

Then, in step S50 ' in, one group of orderly first phase that each SoNA receives according to it The information adjusting the described first phase adjustment amount that signal is comprised adjusts the described inspection that this SoNA is sent Survey the transmission phase place of signal, to obtain the transmission phase place after the synchronization control of this detection signal, and, institute State DoNB and adjust signal according to the first phase that its one corresponding with each SoNA group received is orderly The first phase adjustment amount information comprised adjusts the detection that this SoNA of described DoNB acquisition is sent Second receiving phase of signal, to obtain the second receiving phase after the synchronization control of this detection signal.

Then, in step S60, described DoNB is according to each synchronization control detecting signal obtained After the second receiving phase and second connecing of calculating after described each synchronization control of described second received signal strength Receive the second phase adjustment amount needed for phase place, in order to after interference adjusts, reach predetermined interference effect, i.e. count Calculate the second receiving phase after described each synchronization control interference adjust after reach predetermined interference effect needed for Second phase adjustment amount.

Specifically, described predetermined interference effect can be:

Φ″_i,2=Φ′_i,2+ΔΦ_i,2=Φ_i,2-ΔΦ_i,1+ΔΦ_i,2

Wherein, Φ_i,2And S_i,2The detection that i-th SoNA that respectively described DoNB is obtained is sent Second receiving phase of signal and the second received signal strength, ΔΦ_i,1I-th obtained by described DoNA The described first receiving phase Φ of the detection signal that individual SoNA is sent_i,1First phase adjustment amount, Φ′_i,2=Φ_i,2-ΔΦ_i,1For the second receiving phase after the synchronization control corresponding with i-th SoNA, ΔΦ_i,2For The described second phase adjustment amount corresponding with i-th SoNA, Φ "_i,2Do for corresponding with i-th SoNA Disturb the second receiving phase after adjustment, 1≤i≤N.

Described predetermined interference threshold can be set according to actual communicating requirement, and its value is in (0,1) In the range of, for example, it is possible to be set smaller than or equal to 0.1.

In one embodiment, it is thus achieved that the described second phase adjustment amount corresponding with i-th SoNA ΔΦ_i,2=Φ″_i,2-Φ′_i,2Process can be described as follows.

1. the interference vector after the m time interference corresponding with i-th SoNA adjusts is calculated according to inductive methodPhase angle Φ "_1,2[m] (1≤i≤N, m >=1), it may be assumed that

First, it is thus achieved that the interference vector 0th interference adjustment after corresponding with i-th SoNA namely synchronization Interference vector after adjustment $v_i\left[0\right]=\sqrt{S_{i,2}}{e}^{j{\mathrm{\&Phi;}}_{i,2}^{\&prime;\&prime;}\left[0\right]}=\sqrt{S_{i,2}}{e}^{j{\mathrm{\&Phi;}}_{i,2}^{\&prime;}},(1\&le;i\&le;N),$ And the 0th interference adjusts After total interference vector namely synchronization control after always disturb vector:

$V_N\left[0\right]=\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{v}_i\left[0\right]$

Second, if obtaining the interference vector after the m-1 time interference corresponding with i-th SoNA adjustsAnd the m-1 time interference adjust after always disturb vector:

$V_N[m-1]=\underset{i=1}{\overset{N}{\mathrm{\&Sigma;}}}{v}_i[m-1]$

Interference after the m time then corresponding with i-th SoNA interference adjusts is vectorial's Phase angle Φ "_i,2The calculating process of [m] (1≤i≤N) including:

A) obtainCorresponding interference vector v_p[m-1], 1≤p ≤N

B) vector v is calculated_p[m-1] rotates counterclockwise to and vector-(V_N[m-1]-v_p[m-1]) the consistent rotation in direction Corner Θ [m-1].

Fig. 5 and Fig. 6 is vector diagram, respectively illustrates v according to the vector representation of plural number_i[m-1]、V_N[m-1] And V_N[m-1]-v_iTwo kinds of spatial relationships between [m-1], wherein, Θ [m-1] is vector v_p[m-1] is counterclockwise Rotate to and vector-(V_N[m-1]-v_p[m-1]) the consistent anglec of rotation in direction, 0≤Θ [m-1] ＜ 2 π.

C) for i=p, Φ is made "_i,2[m]=Φ″_i,2[m-1]+Θ [m-1], for i ≠ p, makes Φ "_i,2[m]=Φ″_i,2[m-1],

If 2. as m=M (M is the natural number determined), had:

Then obtain the described second phase adjustment amount ΔΦ corresponding with i-th SoNA_i,2Process terminate, and with The described second phase adjustment amount ΔΦ that i-th SoNA is corresponding_i,2=Φ″_i,2[M]-Φ′_i,2(1≤i≤N).

According to Fig. 5 and Fig. 6, adjust one each time and make the size always disturbing vector reduce surely, therefore, can So that signal disturbing is adjusted in predetermined scope.

Referring to Fig. 4, DoNB according to calculating the second receiving phase after each synchronization control after interference adjusts After reaching the second phase adjustment amount needed for predetermined interference effect, in step S70, DoNB is to each SoNA sends a second phase and adjusts signal, and this second phase adjusts signal packet containing corresponding with this SoNA The information of described second phase adjustment amount.

Finally, in step S80, each SoNA adjusts letter according to its described second phase received The information of number described second phase adjustment amount comprised adjusts the described detection signal that this SoNA is sent Described synchronization control after transmission phase place, with obtain this detection signal interference adjust after transmission phase place. The method of adjustment sending phase place is above being already described, and repeats no more here.

The Phase synchronization described during distributed beams of the present invention shapes above with reference to Fig. 2-6 adjusts Method.Phase synchronization method of adjustment during distributed beams of the present invention shapes can use software real Existing, it would however also be possible to employ hardware realizes, or use the mode of software and hardware combination to realize.

Fig. 7 is block diagram, it is shown that during the distributed beams described in one embodiment of the present of invention shapes Phase synchronization adjusts system.As it is shown in fig. 7, described system includes: be the N number of of distributed beams shaping Network A source node (SoNA) and network A destination node (DoNA), wherein, N is natural number, Each SoNA is configured with the first transmitting element, the first reception unit and first phase adjustment unit, DoNA It is configured with the second transmitting element, the second reception unit, the second demodulating unit and the second computing unit.

First transmitting element of N number of SoNA is according to the order from the 1st SoNA to n-th SoNA Send detection signal successively.

The second reception unit of DoNA receives the inspection that first transmitting element of described N number of SoNA is sent Survey signal, and first transmitting element of the second demodulating unit each SoNA of acquisition of DoNA is sent Detection the first receiving phase of signal and the first received signal strength.

The first of each detection signal that second computing unit of DoNA is obtained according to the second demodulating unit connects Receive phase place and the first received signal strength calculates the first phase needed for described each first receiving phase and adjusts Amount, in order to reach predetermined synchronous effect after synchronization control,

Second transmitting element of DoNA returns again to the 1st according to from the 1st SoNA to n-th SoNA The circular order of individual SoNA by every time in the way of a SoNA sends a single-bit signal to each SoNA sends one group of orderly first phase and adjusts signal, and wherein, one group corresponding with each SoNA has The first phase of sequence adjusts the signal packet information containing the described first phase adjustment amount corresponding with this SoNA.

It is orderly that the first phase adjustment unit of each SoNA receives often organizing of receiving of unit according to first The information of the described first phase adjustment amount that first phase adjustment signal is comprised adjusts this SoNA and is sent The transmission phase place of described detection signal, to obtain the transmission phase place after the synchronization control of this detection signal.

Fig. 8 is block diagram, it is shown that during the distributed beams described in an alternative embodiment of the invention shapes Phase synchronization adjust system.As shown in Figure 8, described system includes: be the N that distributed beams shapes Individual network A source node (SoNA), network A destination node (DoNA) and network B destination node (DoNB), wherein, N is natural number, and each SoNA is configured with the first transmitting element, the first reception Unit and first phase adjustment unit, DoNA be configured with the second transmitting element, second receive unit, the Two demodulating units and the second computing unit, DoNB be configured with the 3rd transmitting element, the 3rd receive unit, the Three demodulating units, third phase adjustment unit and the 3rd computing unit.

First transmitting element of N number of SoNA is according to the order from the 1st SoNA to n-th SoNA Send detection signal successively.

The second reception unit of DoNA receives the inspection that first transmitting element of described N number of SoNA is sent Survey signal, and second demodulating unit of DoNA obtains the of the detection signal that each SoNA is sent One receiving phase and the first received signal strength, meanwhile, the 3rd reception unit of DoNB receives described N The detection signal that first transmitting element of individual SoNA is sent, and the 3rd demodulating unit of DoNB obtains Obtain the second receiving phase and second received signal strength of the detection signal that each SoNA is sent.

The of each detection signal that second computing unit of described DoNA is obtained according to the second demodulating unit One receiving phase and the first received signal strength calculate the first phase needed for described each first receiving phase and adjust Whole amount, in order to reach predetermined synchronous effect after synchronization control, and the second transmitting element is according to from the 1st Individual SoNA returns again to the circular order of the 1st SoNA with every time to a SoNA to n-th SoNA One group orderly the is sent to each SoNA with sending the mode of a single-bit signal to described DoNB One phase adjustment signal sends to DoNB simultaneously and corresponding with each SoNA respectively each organizes orderly first Phase adjustment signal, wherein, the one group orderly first phase corresponding with each SoNA adjusts signal packet Information containing the described first phase adjustment amount corresponding with this SoNA.

It is orderly that the first phase adjustment unit of each SoNA receives unit receive one group according to first The information of the described first phase adjustment amount that first phase adjustment signal is comprised adjusts this SoNA and is sent The transmission phase place of described detection signal, to obtain the transmission phase place after the synchronization control of this detection signal, Further, the third phase adjustment unit of described DoNB according to the 3rd receive unit receive with each What SoNA was corresponding often organizes the first phase adjustment amount information tune that orderly first phase adjustment signal is comprised Second receiving phase of the detection signal that this SoNA that whole described DoNB obtains is sent, is somebody's turn to do to obtain The second receiving phase after the synchronization control of detection signal.

3rd computing unit of described DoNB is according to the second reception phase after the synchronization control of each detection signal Position and described second received signal strength calculate needed for the second receiving phase after described each synchronization control the Two phase adjustment amount, in order to reach predetermined interference effect after interference adjusts, and the 3rd transmitting element to Each SoNA sends a second phase and adjusts signal, and this second phase adjusts signal packet and contains and this SoNA The information of corresponding described second phase adjustment amount.

The first phase adjustment unit of each SoNA receives, according to first, described second phase that unit receives It is described that position adjusts that the information of described second phase adjustment amount that signal comprised adjusts that this SoNA sent Detection signal described synchronization control after transmission phase place, with obtain this detection signal interference adjust after Send phase place.

Compare the Phase synchronization algorithm (referred to as GAP algorithm) in the present invention and non-patent literature 1 below (Mudumbai R, Hespanha J, Madhow U et al., Scalable feedback control for distributed beamforming in sensor networks,International Symposium on Information Theory (ISIT), Adelaide2005, p137-141) in random single-bit algorithm (R1BF) effect.With MATLAB as simulation software.

By GAP slot length as a slot length in emulation, the subsynchronous tune of R1BF mono- Two time slots of whole needs.If all SoNA general powers are 1, power uniform distribution, signal is after channel Power is undamped.After wavelength normalization, N(N=100) individual SoNA be evenly distributed on radius be R=10, The center of circle is the border circular areas of (0,0), and the position of DoNA is (1000,0), GAP when comparing noiseless RSS ' with R1BF₁Change with lock in time.As it is shown in figure 9, random disturbance δ is desirable in R1BF The stochastic variable of positive and negative two values of equiprobability, and the absolute value of positive and negative two values is equal.The value of three kinds of δ represents Three kinds of common scenario: | δ |=π/12.5, R1BF trends towards fast convergence rate；| δ |=π/50, R1BF Trend towards final higher RSS '₁；| δ |=pi/2 5, R1BF trends towards rapid convergence speed and high RSS '₁Balance. Simulation result can be seen that GAP can make RSS '₁Fast approaching 1, reaches same RSS '₁Time, GAP can contract significantly The time of short synchronization: as RSS '₁When=0.9, GAP needs about 300 time slots, and R1BF needs about 1500 Individual time slot, GAP decreases the time slot of about 80%.

The SoNA energy wastage in bulk or weight of GAP and R1BF can also be compared from Fig. 9.Individual source node is each Transmission signal energy is E, compares as RSS '₁SoNA total power consumption when=0.9.Each SoNA in GAP Consumed energy be E, consumed energy is 100E altogether.In R1BF, each SoNA of each time slot consumes The energy of E, total power consumption is 75000E.Can be seen that GAP can save source node consumed energy efficiently.

Take the parameter identical with Fig. 9, the RSS ' of GAP algorithm under emulation additive Gaussian noise difference signal to noise ratio₁ Change with lock in time.As shown in Figure 10.Top n time slot is detected the carrier wave of each SoNA by DoNA Phase angle, discusses RSS '₁There is no meaning, so setting it as 1/N, it can be seen that signal to noise ratio is the lowest, final RSS '₁ The lowest, this is owing to noise makes the detection signal phase angle of detection inaccurate, therefore can not reach preferable phase Bit synchronization causes.But it can be seen that regardless of the height of signal to noise ratio, GAP algorithm can play certain Phase locked effect is along with the increase of lock in time, RSS '₁The a certain upper bound can be moved closer to.I.e. Make under the adverse circumstances that signal to noise ratio is 3dB, RSS '₁Still can reach about 0.78, illustrate that GAP is low It still is able to play a role under signal to noise ratio environment.

Taking the parameter identical with Fig. 9, N takes different value, and allows the position of DoNB be (1000cos (π/4), 1000sin (π/4)), emulates after to the AF panel of DoNB to-60dB, to synchronizing The RSS ' of SoNA₁Impact.As shown in figure 11.It follows that N is from 20 to 320 from Figure 11 Scope, interference adjustment has only to carry out most 10 times, and N is the biggest, and number of times is the most.To DoNB Interference adjust can to RSS '₁Produce impact, make RSS '₁Reduce, i.e. can upset the phase place synchronized.RSS′₁'s Reduction amount is unrelated with N, RSS '₁About reduce 1, for the square root of the general power of all SoNA, i.e. GAP If algorithm want by the value of the AF panel of DoNB to the most negligible a certain note (-60dB it is believed that It is to ignore), RSS '₁Need the square root of the general power that value is SoNA reduced.

Present invention could apply to the various scenes in reality.Such as, first embodiment institute of the present invention The method stated may be used for sensor network, and the method described in an alternative embodiment of the invention may be used for Cognition wireless network.Specifically, aforementioned network A can be sensor network or cognition wireless network, front Stating network B can be conventional wireless network.

It is described according to embodiments of the invention although describing above with reference to figure, but this area skill Art personnel should be appreciated that the embodiment being proposed the invention described above, it is also possible to without departing from the present invention Various improvement and combination is made on the basis of appearance.Therefore, protection scope of the present invention should be by appended power The content of profit claim determines.

Claims (13)

1. the Phase synchronization method of adjustment during distributed beams shapes, including:

A) the N number of network A source node (SoNA) doing distributed beams shaping sends detection signal successively according to the order from the 1st SoNA to n-th SoNA, and wherein, N is natural number；

B) network A destination node (DoNA) receives the detection signal that described N number of SoNA is sent, and obtains the first receiving phase and first received signal strength of the detection signal that each SoNA is sent；

C) described DoNA calculates the first phase adjustment amount needed for described each first receiving phase according to the first receiving phase and first received signal strength of each detection signal obtained, to reach predetermined synchronous effect after synchronization control, and return again to the circular order of the 1st SoNA to send one group of orderly first phase adjustment signal to each SoNA in the way of SoNA one single-bit signal of transmission every time according to from the 1st SoNA to n-th SoNA, wherein, the one group orderly first phase corresponding with each SoNA adjusts the signal packet information containing the described first phase adjustment amount corresponding with this SoNA；And

D) one group of orderly first phase that each SoNA receives according to it adjusts the information of the described first phase adjustment amount that signal is comprised and adjusts the transmission phase place of the described detection signal that this SoNA is sent, to obtain the transmission phase place after the synchronization control of this detection signal.

2. the Phase synchronization method of adjustment during distributed beams as claimed in claim 1 shapes, wherein,

Described detection signal be with a simple radical band signal, the local carrier of the same frequency of each SoNA is modulated after produce band signal.

3. the Phase synchronization method of adjustment during distributed beams as claimed in claim 1 shapes, wherein,

Described DoNA uses two local carriers that each described detection signal received is carried out coherent demodulation, thus obtain the first receiving phase and first received signal strength of this detection signal, wherein, the first receiving phase of described each detection signal is limited in the angular range of 2 π sizes.

4. the Phase synchronization method of adjustment during distributed beams as claimed in claim 1 shapes, wherein,

Described predetermined synchronous effect is:

Wherein, Φ_i,1And S_i,1First receiving phase of the detection signal that i-th SoNA that respectively described DoNA is obtained is sent and the first received signal strength, ΔΦ_i,1For described first receiving phase Φ_i,1First phase adjustment amount, Φ '_i,1=Φ_i,1-ΔΦ_i,1The first receiving phase after the synchronization control of the detection signal that i-th SoNA obtained by described DoNA is sent, 1≤i≤N.

5. the Phase synchronization method of adjustment during distributed beams as claimed in claim 4 shapes, wherein,

Obtain described first receiving phase Φ_i,1First phase adjustment amount ΔΦ_i,1The process of (1≤i≤N) including:

1. according to from the first receiving phase Φ_1,1To the first receiving phase Φ_N,1Return again to the first receiving phase Φ_1,1Circular order each first receiving phase described is carried out successive adjustment one by one, wherein, to Φ_i,1The adjustment amount that adjusts of kth time be 2 π a_ik/2^k, k >=0, and as k=0, a_ikIt is 0, when k >=1, a_ikFor Φ_i,1The kth term coefficient of the binary digital expansion of an integer of/2 π；

When 2. producing the adjustment amount of each predetermined number, calculate Φ now_i,1Total adjustment amount:

Wherein, K_iRepresent the first receiving phase Φ_i,1Adjusted number of times, 1≤i≤N, and calculate following values now:

3. the RSS ' calculated when producing the adjustment amount of certain predetermined number₁[K_i, 1≤i≤N] more than or equal to described predetermined synchronization threshold time, described acquisition the first receiving phase Φ_i,1First phase adjustment amount ΔΦ_i,1The process of (1≤i≤N) terminates, and ΔΦ_i,1For ΔΦ now_i,1[K_i]。

6. the Phase synchronization method of adjustment during distributed beams as claimed in claim 1 shapes, wherein,

At described DoNA after each SoNA sends one group of orderly first phase adjustment signal, also include that described DoNA sends synchronization control end signal to described N number of SoNA.

7. the Phase synchronization method of adjustment during distributed beams as claimed in claim 5 shapes, wherein,

If it is { a that one group of orderly first phase that i-th SoNA receives adjusts signal_ik|0≤k≤K_i, K_iFor integer, and during k=0, a_ikWhen=0, k >=1, a_ik=1 or 0}, then the described first phase adjustment amount ΔΦ corresponding to this SoNA_i,1For:

Wherein, 1≤i≤N.

8. the Phase synchronization method of adjustment during distributed beams shapes, including:

A) the N number of network A source node (SoNA) doing distributed beams shaping sends detection signal successively according to the order from the 1st SoNA to n-th SoNA, and wherein, N is natural number；

B) network A destination node (DoNA) receives the detection signal that described N number of SoNA is sent, and obtain the first receiving phase and first received signal strength of the detection signal that each SoNA is sent, simultaneously, network B destination node (DoNB) receives the detection signal that described N number of SoNA is sent, and obtains the second receiving phase and second received signal strength of the detection signal that each SoNA is sent；

C) described DoNA calculates the first phase adjustment amount needed for described each first receiving phase according to the first receiving phase and first received signal strength of each detection signal obtained, to reach predetermined synchronous effect after synchronization control, and return again to the circular order of the 1st SoNA to send one group orderly first phase adjustment signal simultaneously to first phase adjustment signal that each group that DoNB transmission respectively with each SoNA corresponding orderly to each SoNA to a SoNA in the way of sending a single-bit signal to described DoNB every time according to from the 1st SoNA to n-th SoNA, wherein, the one group orderly first phase corresponding with each SoNA adjusts the signal packet information containing the described first phase adjustment amount corresponding with this SoNA；

D) each SoNA adjusts the transmission phase place of the described detection signal that this SoNA is sent according to the information that its one group of orderly first phase received adjusts the described first phase adjustment amount that signal is comprised, to obtain the transmission phase place after the synchronization control of this detection signal, and, described DoNB adjusts, according to the first phase that its one corresponding with each SoNA group received is orderly, the second receiving phase detecting signal that this SoNA of the first phase adjustment amount information adjustment described DoNB acquisition that signal is comprised is sent, to obtain the second receiving phase after the synchronization control of this detection signal；

E) described DoNB calculates the second phase adjustment amount needed for the second receiving phase after described each synchronization control according to the second receiving phase after the synchronization control of each detection signal obtained and described second received signal strength, to reach predetermined interference effect after interference adjusts, and sending a second phase adjustment signal to each SoNA, this second phase adjusts the signal packet information containing the described second phase adjustment amount corresponding with this SoNA；

F) the transmission phase place after the information of the described second phase adjustment amount that each SoNA is comprised according to its described second phase received adjustment signal adjusts the described synchronization control of the described detection signal that this SoNA is sent, to obtain the transmission phase place after the interference of this detection signal adjusts.

9. the Phase synchronization method of adjustment during distributed beams as claimed in claim 8 shapes, wherein, described predetermined interference effect is:

Φ″_i,2=Φ′_i,2+ΔΦ_i,2=Φ_i,2-ΔΦ_i,1+ΔΦ_i,2

Wherein, Φ_i,2And S_i,2Second receiving phase of the detection signal that i-th SoNA that respectively described DoNB is obtained is sent and the second received signal strength, ΔΦ_i,1The described first receiving phase Φ of the detection signal that i-th SoNA obtained by described DoNA is sent_i,1First phase adjustment amount, Φ '_i,2=Φ_i,2-ΔΦ_i,1For the second receiving phase after the synchronization control corresponding with i-th SoNA, ΔΦ_i,2For the described second phase adjustment amount corresponding with i-th SoNA, Φ "_i,2The second receiving phase after adjusting for the interference corresponding with i-th SoNA, 1≤i≤N.

10. the Phase synchronization method of adjustment during distributed beams as claimed in claim 9 shapes, wherein,

Obtain the described second phase adjustment amount ΔΦ corresponding with i-th SoNA_i,2The process of (1≤i≤N) including:

1. the interference vector after the m time interference corresponding with i-th SoNA adjusts is calculated according to inductive methodPhase angle Φ "_i,2[m] (1≤i≤N, m >=1), it may be assumed that

First, it is thus achieved that the interference vector 0th interference adjustment after corresponding with i-th SoNA namely the interference vector after synchronization controlAnd the 0th interference adjust after total interference vector namely synchronization control after always disturb vector:

Second, if obtaining the interference vector after the m-1 time interference corresponding with i-th SoNA adjustsAnd the m-1 time interference adjust after always disturb vector:

Interference after the m time then corresponding with i-th SoNA interference adjusts is vectorialPhase angle Φ "_i,2The calculating process of [m] (1≤i≤N) including:

A) obtainCorresponding interference vector v_p[m-1], 1≤p≤N；

B) vector v is calculated_p[m-1] rotates counterclockwise to and vector-(V_N[m-1]-v_p[m-1]) consistent anglec of rotation Θ [m-1] in direction；

C) for i=p, Φ is made "_i,2[m]=Φ″_i,2[m-1]+Θ [m-1], for i ≠ p, makes Φ "_i,2[m]=Φ″_i,2[m-1],

If 2. as m=M (M is the natural number determined), had:

Then obtain the described second phase adjustment amount ΔΦ corresponding with i-th SoNA_i,2Process terminate, and the described second phase adjustment amount ΔΦ corresponding with i-th SoNA_i,2=Φ″_i,2[M]-Φ′_i,2(1≤i≤N).

Phase synchronization method of adjustment in the 11. distributed beams shapings as described in claim 1 or 8, wherein, described network A is sensor network or cognition wireless network, and described network B is conventional wireless network.

Phase synchronization during 12. 1 kinds of distributed beams shape adjusts system, including: do N number of network A source node (SoNA) and network A destination node (DoNA) that distributed beams shapes, wherein, N is natural number, each SoNA is configured with the first transmitting element, the first reception unit and first phase adjustment unit, DoNA is configured with the second transmitting element, the second reception unit, the second demodulating unit and the second computing unit, and

First transmitting element of N number of SoNA sends detection signal successively according to the order from the 1st SoNA to n-th SoNA,

The second reception unit of DoNA receives the detection signal that first transmitting element of described N number of SoNA is sent, and the first receiving phase of the detection signal that first transmitting element of the second demodulating unit each SoNA of acquisition of DoNA is sent and the first received signal strength

First receiving phase and first received signal strength of each detection signal that second computing unit of DoNA is obtained according to the second demodulating unit calculate the first phase adjustment amount needed for described each first receiving phase, to reach predetermined synchronous effect after synchronization control

Second transmitting element of DoNA returns again to the circular order of the 1st SoNA to send one group of orderly first phase adjustment signal to each SoNA in the way of SoNA one single-bit signal of transmission every time according to from the 1st SoNA to n-th SoNA, wherein, the one group orderly first phase corresponding with each SoNA adjusts the signal packet information containing the described first phase adjustment amount corresponding with this SoNA

The first phase adjustment unit of each SoNA receives the orderly first phase of often organizing of receiving of unit according to first and adjusts the information of the described first phase adjustment amount that signal is comprised and adjust the transmission phase place of the described detection signal that this SoNA is sent, to obtain the transmission phase place after the synchronization control of this detection signal.

Phase synchronization during 13. 1 kinds of distributed beams shape adjusts system, including: do N number of network A source node (SoNA) that distributed beams shapes, network A destination node (DoNA) and network B destination node (DoNB), wherein, N is natural number, each SoNA is configured with the first transmitting element, first receives unit and first phase adjustment unit, DoNA is configured with the second transmitting element, second receives unit, second demodulating unit and the second computing unit, DoNB is configured with the 3rd transmitting element, 3rd receives unit, 3rd demodulating unit, third phase adjustment unit and the 3rd computing unit, and,

First transmitting element of N number of SoNA sends detection signal successively according to the order from the 1st SoNA to n-th SoNA,

The second reception unit of DoNA receives the detection signal that first transmitting element of described N number of SoNA is sent, and second demodulating unit of DoNA obtains the first receiving phase and first received signal strength of the detection signal that each SoNA is sent, simultaneously, the 3rd reception unit of DoNB receives the detection signal that first transmitting element of described N number of SoNA is sent, and the 3rd demodulating unit of DoNB obtains the second receiving phase and second received signal strength of the detection signal that each SoNA is sent

nullFirst receiving phase and first received signal strength of each detection signal that second computing unit of described DoNA is obtained according to the second demodulating unit calculate the first phase adjustment amount needed for described each first receiving phase，To reach predetermined synchronous effect after synchronization control，And the second transmitting element returns again to the circular order of the 1st SoNA to send one group orderly first phase adjustment signal simultaneously to first phase adjustment signal that each group that DoNB transmission respectively with each SoNA corresponding orderly to each SoNA to a SoNA in the way of sending a single-bit signal to described DoNB every time according to from the 1st SoNA to n-th SoNA，Wherein，The one group orderly first phase corresponding with each SoNA adjusts the signal packet information containing the described first phase adjustment amount corresponding with this SoNA，

The information of the described first phase adjustment amount that one group of orderly first phase adjustment signal that the first phase adjustment unit of each SoNA receives according to the first reception unit is comprised adjusts the transmission phase place of the described detection signal that this SoNA is sent, to obtain the transmission phase place after the synchronization control of this detection signal, and, often the organize orderly first phase corresponding with each SoNA that the third phase adjustment unit of described DoNB receives according to the 3rd reception unit adjusts the second receiving phase detecting signal that this SoNA of the first phase adjustment amount information adjustment described DoNB acquisition that signal is comprised is sent, to obtain the second receiving phase after the synchronization control of this detection signal,

3rd computing unit of described DoNB calculates the second phase adjustment amount needed for the second receiving phase after described each synchronization control according to the second receiving phase after the synchronization control of each detection signal and described second received signal strength, to reach predetermined interference effect after interference adjusts, and the 3rd transmitting element sends a second phase to each SoNA and adjusts signal, this second phase adjusts the signal packet information containing the described second phase adjustment amount corresponding with this SoNA

The information of the described second phase adjustment amount that the described second phase adjustment signal that the first phase adjustment unit of each SoNA receives according to the first reception unit is comprised adjusts the transmission phase place after the described synchronization control of the described detection signal that this SoNA is sent, to obtain the transmission phase place after the interference of this detection signal adjusts.