CN103974404A - Power distribution scheme based on maximum effective capacity and applied to wireless multi-antenna virtual MIMO - Google Patents

Abstract

The invention discloses a power distribution scheme based on the maximum effective capacity and applied to a wireless multi-antenna virtual MIMO. The power distribution scheme is characterized in that for an MIMO system in a wireless network, the power control technology is applied to new users, the interference from the new users in existing users is limited to be kept at an acceptable level, and therefore the effective capacity of the existing users is guaranteed; through optimization of the guarantee of QoS in a cooperative V-MIMO, the power distribution scheme driven by the QoS of the new users is obtained; for a half-duplex/ full-duplex system of the cooperative V-MIMO in the wireless network, the problem of optimization of the guarantee of QoS in the cooperative V-MIMO is established to be a strict convex optimization problem. According to the power distribution scheme based on the maximum effective capacity and applied to the wireless multi-antenna virtual MIMO, the optimal power distribution scheme supporting statistics of the QoS in the non-cooperative/cooperative V-MIMO system in the wireless network is promoted, the effective capacity of the new users can be maximized, the effective capacity of the existing users can also be guaranteed, and the power distribution scheme for the non-cooperative/cooperative V-MIMO system is evaluated through simulation.

Description

In wireless many antennas virtual MIMO based on maximizing available capacity power allocation scheme

Technical field

The present invention relates in a kind of wireless many antennas virtual MIMO based on maximizing available capacity power allocation scheme.

Background technology

In the decades in past, in wireless network, MIMO technology has been proved to be and can have obtained high spectrum efficiency, and by spatial reuse, the throughput of mimo system is linear increasing along with the minimum value of transmitting antenna and reception antenna presents.But, be subject to the restriction of volume and cost, mobile terminal is difficult to be equipped with many antennas, and in reality, mobile subscriber's one general configuration one or two is with antenna, although therefore base station can configure many antennas, between user and base station, the throughput of channel is still limited to the antenna number of user side.Without loss of generality, suppose that mobile subscriber configures a transmitting antenna.

On identical subchannel, use identical frequency and time slot to send independently data by two or more users, the problem proposing before can overcoming, this means that a user uses some of them subchannel, one or more users in addition also use identical subchannel to send data, and the user of use same sub-channel is divided into group and sends data to base station.From the angle of base station, the data that receive are seemingly sent from a user, and this user configures many antennas, the transmission mode that usage space is taken.If the number of base station reception antenna is more than or equal to user's transmitting antenna number summation, base station can decode the multiple data flow from different user, this kind of transmission means is called the V-MIMO transmission of up link, for current popular radio honeycomb community V-MIMO,, between mobile subscriber, there is not cooperation in for example, V-MIMO in Long Term Evolution (LTE).For following V-MIMO, the cooperation between user will become possibility.

The V-MIMO transmission plan existing is at present mainly the throughput that maximizes grouping user, in a grouping, any user uses the priority of subchannel identical (this subchannel is to divide according to the user who exists at present), this is inequitable for the user who has existed in grouping, this is due to the interference Adding User, and existing user's throughput may be less than actual demand.Based on the consideration of equity to existing user, when design V-MIMO transmission plan, first meet the requirement of existing user throughput, therefore need user to be divided into two groups: existing user and the user who newly increases.While not using V-MIMO, existing user has occupied subchannel individually; Use when V-MIMO existing user and newly increase user and divide and use in groups identical subchannel grouping to send data simultaneously.

Notice for non-cooperation and cooperation V-MIMO transmission, our transmission plan is different from the every MIMO transmission plan that antenna power is limited in following several respects: on the one hand, in non-cooperation V-MIMO transmission, user distribution is in wireless network, and they send data to base station independently; For V-MIMO transmission, the data from different user need to be distinguished in base station.In MIMO transmission, every antenna power is limited, and all users configure identical antenna, and the data of different antennae can and send to receiving terminal at transmitting terminal combined decoding like this, likely further increase the throughput of system compared with V-MIMO.On the other hand, if apply cooperation mode in V-MIMO transmission, need to estimate the channel status of different user, this may cause the overhead of time frame or bandwidth, but, for MIMO transmission, because all antenna correspondences identical user, therefore there is no need to estimate the channel status between all antennas.

In addition, due to the time variation of channel, be difficult to ensure definite QoS in wireless network real-time Transmission process, therefore, for radio communication real-time, the QoS (QoS exponential sum available capacity) in statistical significance becomes an important alternative.Available capacity is defined as the supported maximum constant arrival rate of service speed, and this service speed can ensure the QoS index θ of regulation, and available capacity has characterized the throughput of system of different delay-QoS demand.For real-time traffic, for example video conference, need to guarantee strict the limit of time delay, and available capacity now refers to outage capacity; On the other hand, for non-real-time traffic, but for example transfer of data needs very high throughput delay requirement very loose, and available capacity now refers to ergodic capacity.What the work existing about V-MIMO at present was mainly considered is non-real-time traffic, very loose to delay requirement.In addition, in former work about how to ensure in wireless network V-MIMO and assess QoS and deeply understand and research thoroughly.

Summary of the invention

The technical problem to be solved in the present invention is to overcome above-mentioned defect, a kind of available capacity that can maximize the available capacity that newly increases user and ensure simultaneously existing user is provided, by Simulation Evaluation in non-cooperation/cooperation V-MIMO system in wireless many antennas virtual MIMO of power allocation scheme based on maximizing available capacity power allocation scheme.

For addressing the above problem, the technical solution adopted in the present invention is:

In a kind of wireless many antennas virtual MIMO based on maximizing available capacity power allocation scheme, it is characterized in that: for mimo system in wireless network, the user who newly increases is used to power control techniques, restriction newly increases the interference that user brings existing user and maintains an acceptable level, thereby has ensured existing user's available capacity; By the optimization problem of guaranteed qos in cooperation V-MIMO, obtain the power allocation scheme of the QoS driving that newly increases user; In wireless network cooperation V-MIMO half-duplex and full duplex system, the optimization problem of having constructed guaranteed qos in cooperation V-MIMO is strict protruding optimization problem; For solving above-mentioned strict protruding optimization problem, the QoS driving power allocative decision that has proposed to be applicable to existing user He newly increased user, this scheme can maximize the available capacity that newly increases user and ensure simultaneously existing user's available capacity.

As a kind of technical scheme of optimization, it is characterized in that: by existing user with newly increase user grouping and send data to base station, base station configuration N root antenna, reception antenna number is B _n(1≤n≤N); Existing user and the number of users newly increasing are respectively A ₁and A ₂, they share identical subchannel.

As a kind of technical scheme of optimization, it is characterized in that: the statistics the limit of time delay of guaranteed qos in V-MIMO transmission;

For uplink, the data of oneself are sent to base station by existing user, and in order to increase the degree of freedom and spatial multiplexing gain, the user who newly increases and existing user use identical subchannel, and forming virtual aerial array with existing user, this has caused the phase mutual interference between user;

According to worst error criterion, for stochastic variable Q (∞) queue length Q (t), convergence meets

$-\underset{Q_{\mathrm{th}}\→\∞}{\lim }\frac{\log \left(\mathrm{Pr}\right\{Q(\∞)>Q_{\mathrm{th}}\left\}\right)}{Q_{\mathrm{th}}}=\mathrm{\θ}$

Q in above formula _threpresent queue length boundary line, parameter θ >0 is real number, θ is called again QoS index, represent the index rate of fading of time delay boundary line QoS violation rate, θ is larger, and expression rate of fading is faster, mean that system is stricter to the requirement of QoS, the less expression rate of fading of θ is slower, means that system is more lax to qos requirement; θ → ∞ means that system can't stand any delay, is exactly that system is very strict to qos requirement, and contrary θ → 0 means that system can tolerate any time delay, is exactly that system is lax to qos requirement.

As a kind of technical scheme of optimization, it is characterized in that: cooperation V-MIMO transmission comprises:

1), cooperation transmission pattern:

Under collaboration mode, set up the time slot allocation scheme of user in V-MIMO group, this scheme is described below:

Normalization one frame duration is 1 and a frame is divided into two states: state 1, and existing user is transmitted to base station as via node by the user's who newly increases signal, supposes that the duration is μ; State 2, newly increase and user is transmitted to base station as via node by existing user's signal, the duration is (1-μ); In cooperation V-MIMO transmission, use amplification forwarding agreement, in this agreement, via node simply amplifies reception signal and is then transmitted to destination; Convenient for formulation, definition cooperation CSI and QCSI are respectively with because existing user and the user who newly increases exist cooperation, they control transmitted power dynamically by instantaneous QCSI;

2), cooperation half-duplex and the full duplex that cooperates:

In the time of duration μ and (1-μ), can use half-or full-duplex mode transfer to via node; In the time using half-duplex transmission, first half frame time via node reception sources node signal, signal is transmitted to destination node by later half frame time via node; When using when full duplex transmission, the signal of via node reception sources node be transmitted to destination node in whole time frame;

3), instantaneous transmission speed under half-duplex

Under half-duplex AF agreement, use time slot allocation scheme, can obtain the user who newly increases and the existing user one frame instantaneous transmission speed of base station end, use respectively with be expressed as follows:

$R_{2H}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))=\frac{\mathrm{\μBT}}{2}{\log }_2(1+2P_2\left(\tilde{v}\right){\mathrm{\γ}}_2+\frac{{4P}_2\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_1\left(\tilde{v}\right){\mathrm{\γ}}_2}{2P_2\left(\tilde{v}\right){\mathrm{\γ}}_3+2P_1\left(\tilde{v}\right){\mathrm{\γ}}_1+{\mathrm{\σ}}^2})$

$R_{1H}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))=\frac{(1-\mathrm{\μ})\mathrm{\μBT}}{2}{\log }_2(1+2P_1\left(\tilde{v}\right){\mathrm{\γ}}_1+\frac{{4P}_1\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_2\left(\tilde{v}\right){\mathrm{\γ}}_2}{2P_1\left(\tilde{v}\right){\mathrm{\γ}}_3+2P_2\left(\tilde{v}\right){\mathrm{\γ}}_2+{\mathrm{\σ}}^2}),$

In above formula, existing user with the instantaneous through-put power that newly increases user is with in order to keep identical mean consumption power with full duplex transmission, the user who newly increases and existing user use in half-duplex transmission with

4), full duplex instantaneous transmission speed:

Under full duplex AF agreement, use time slot allocation scheme, can obtain the user who newly increases and the existing user one frame instantaneous transmission speed of base station end, use respectively with be expressed as follows:

$R_{2F}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))=\frac{\mathrm{\μBT}}{2}{\log }_2(1+2P_2\left(\tilde{v}\right){\mathrm{\γ}}_2+\frac{{\widetilde{\mathrm{\δ}}P}_2\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_1\left(\tilde{v}\right){\mathrm{\γ}}_1}{P_2\left(\tilde{v}\right){\mathrm{\γ}}_3+\widetilde{\mathrm{\δ}}{P}_1\left(\tilde{v}\right){\mathrm{\γ}}_1+{\mathrm{\σ}}^2})$

$R_{1F}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))={(1-\mathrm{\μ})\mathrm{BT}\log }_2(1+P_1\left(\tilde{v}\right){\mathrm{\γ}}_1+\frac{{\widetilde{\mathrm{\δ}}P}_1\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_2\left(\tilde{v}\right){\mathrm{\γ}}_2}{P_1\left(\tilde{v}\right){\mathrm{\γ}}_3+\widetilde{\mathrm{\δ}}{P}_2\left(\tilde{v}\right){\mathrm{\γ}}_2+{\mathrm{\σ}}^2}),$

The user who newly increases in above formula and existing user's instantaneous through-put power is with be defined as rain scavenging coefficient be used for describing the impact of self-interference in full duplex transmission, value is determined by many factors, comprises bandwidth, antenna configuration and transmitted power; while trending towards 0 expression full duplex transmission, self-interference impact is very large; while trending towards 1 expression full duplex transmission, self-interference impact is almost negligible.

As a kind of technical scheme of optimization, it is characterized in that: the power allocation scheme that in the non-cooperation of wireless network V-MIMO, QoS drives, model the optimization problem of guaranteed qos in non-cooperation V-MIMO, this problem is the available capacity that maximizes the user who newly increases under the available capacity of guaranteeing existing user, has then set up the QoS driving power allocative decision of guaranteed qos in non-cooperation V-MIMO.

As a kind of technical scheme of optimization, it is characterized in that:

QoS driving power allocative decision in the non-cooperation of wireless network half-duplex and full duplex V-MIMO: respectively by the optimization problem of having set up guaranteed qos in wireless network half-duplex and full duplex V-MIMO transmission, these two problems are all Strict Convex optimization problems, have then set up respectively QoS driving power allocative decision in the non-cooperation of wireless network half-duplex and full duplex V-MIMO.

Owing to having adopted technique scheme, compared with prior art, the present invention has gone out in the non-cooperation/cooperation of wireless network V-MIMO system the optimal power allocation scheme of supporting statistics QoS, and target is the available capacity that maximizes the available capacity that newly increases user and ensure simultaneously existing user.For mimo system in wireless network, the user who newly increases is used to power control techniques, restriction newly increases the interference that user brings existing user and maintains an acceptable level, thereby has ensured existing user's available capacity.By the cooperate optimization problem of guaranteed qos in V-MIMO of solution, obtain newly increasing the power allocation scheme that user's QoS drives.In wireless network cooperation V-MIMO half-duplex and full duplex system, the optimization problem of having constructed guaranteed qos in cooperation V-MIMO is strict protruding optimization problem.For this reason, the QoS driving power allocative decision that has proposed in the present invention to be applicable to existing user and newly increase user, this scheme can maximize the available capacity that newly increases user and ensure simultaneously existing user's available capacity, by Simulation Evaluation the power allocation scheme in non-cooperation/cooperation V-MIMO system.

Embodiment

Embodiment:

In a kind of wireless many antennas virtual MIMO based on maximizing available capacity power allocation scheme: for mimo system in wireless network, the user who newly increases is used to power control techniques, restriction newly increases the interference that user brings existing user and maintains an acceptable level, thereby has ensured existing user's available capacity; By the optimization problem of guaranteed qos in cooperation V-MIMO, obtain the power allocation scheme of the QoS driving that newly increases user; In wireless network cooperation V-MIMO half-duplex and full duplex system, the optimization problem of having constructed guaranteed qos in cooperation V-MIMO is strict protruding optimization problem; For solving above-mentioned strict protruding optimization problem, the QoS driving power allocative decision that has proposed to be applicable to existing user He newly increased user, this scheme can maximize the available capacity that newly increases user and ensure simultaneously existing user's available capacity.

By existing user with newly increase user grouping and send data to base station, base station configuration N root antenna, reception antenna number is Bn (1≤n≤N); Existing user and the number of users newly increasing are respectively A ₁and A ₂, they share identical subchannel.

In such scheme, the statistics the limit of time delay of guaranteed qos in V-MIMO transmission;

For uplink, the data of oneself are sent to base station by existing user, and in order to increase the degree of freedom and spatial multiplexing gain, the user who newly increases and existing user use identical subchannel, and forming virtual aerial array with existing user, this has caused the phase mutual interference between user;

According to worst error criterion, for stochastic variable Q (∞) queue length Q (t), convergence meets

$-\underset{Q_{\mathrm{th}}\→\∞}{\lim }\frac{\log \left(\mathrm{Pr}\right\{Q(\∞)>Q_{\mathrm{th}}\left\}\right)}{Q_{\mathrm{th}}}=\mathrm{\θ}$

Q in above formula _threpresent queue length boundary line, parameter θ >0 is real number, θ is called again QoS index, represent the index rate of fading of time delay boundary line QoS violation rate, θ is larger, and expression rate of fading is faster, mean that system is stricter to the requirement of QoS, the less expression rate of fading of θ is slower, means that system is more lax to qos requirement; θ → ∞ means that system can't stand any delay, is exactly that system is very strict to qos requirement, and contrary θ → 0 means that system can tolerate any time delay, is exactly that system is lax to qos requirement.

In such scheme, cooperation V-MIMO transmission comprises:

1), cooperation transmission pattern:

Under collaboration mode, set up the time slot allocation scheme of user in V-MIMO group, this scheme is described below:

Normalization one frame duration is 1 and a frame is divided into two states: state 1, and existing user is transmitted to base station as via node by the user's who newly increases signal, supposes that the duration is μ; State 2, newly increase and user is transmitted to base station as via node by existing user's signal, the duration is (1-μ); In cooperation V-MIMO transmission, use amplification forwarding agreement, in this agreement, via node simply amplifies reception signal and is then transmitted to destination; Convenient for formulation, definition cooperation CSI and QCSI are respectively with because existing user and the user who newly increases exist cooperation, they control transmitted power dynamically by instantaneous QCSI.

2), cooperation half-duplex and the full duplex that cooperates:

In the time of duration μ and (1-μ), can use half-or full-duplex mode transfer to via node; In the time using half-duplex transmission, first half frame time via node reception sources node signal, signal is transmitted to destination node by later half frame time via node; When using when full duplex transmission, the signal of via node reception sources node be transmitted to destination node in whole time frame.

3), instantaneous transmission speed under half-duplex

Under half-duplex AF agreement, use time slot allocation scheme, can obtain the user who newly increases and the existing user one frame instantaneous transmission speed of base station end, use respectively with be expressed as follows:

$R_{2H}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))=\frac{\mathrm{\μBT}}{2}{\log }_2(1+2P_2\left(\tilde{v}\right){\mathrm{\γ}}_2+\frac{{4P}_2\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_1\left(\tilde{v}\right){\mathrm{\γ}}_2}{2P_2\left(\tilde{v}\right){\mathrm{\γ}}_3+2P_1\left(\tilde{v}\right){\mathrm{\γ}}_1+{\mathrm{\σ}}^2})$

$R_{1H}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))=\frac{(1-\mathrm{\μ})\mathrm{\μBT}}{2}{\log }_2(1+2P_1\left(\tilde{v}\right){\mathrm{\γ}}_1+\frac{{4P}_1\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_2\left(\tilde{v}\right){\mathrm{\γ}}_2}{2P_1\left(\tilde{v}\right){\mathrm{\γ}}_3+2P_2\left(\tilde{v}\right){\mathrm{\γ}}_2+{\mathrm{\σ}}^2}),$

In above formula, existing user with the instantaneous through-put power that newly increases user is with in order to keep identical mean consumption power with full duplex transmission, the user who newly increases and existing user use in half-duplex transmission with

4), full duplex instantaneous transmission speed:

Under full duplex AF agreement, use time slot allocation scheme, can obtain the user who newly increases and the existing user one frame instantaneous transmission speed of base station end, use respectively with be expressed as follows:

$R_{2F}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))=\frac{\mathrm{\μBT}}{2}{\log }_2(1+2P_2\left(\tilde{v}\right){\mathrm{\γ}}_2+\frac{{\widetilde{\mathrm{\δ}}P}_2\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_1\left(\tilde{v}\right){\mathrm{\γ}}_1}{P_2\left(\tilde{v}\right){\mathrm{\γ}}_3+\widetilde{\mathrm{\δ}}{P}_1\left(\tilde{v}\right){\mathrm{\γ}}_1+{\mathrm{\σ}}^2})$

$R_{1F}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))={(1-\mathrm{\μ})\mathrm{BT}\log }_2(1+P_1\left(\tilde{v}\right){\mathrm{\γ}}_1+\frac{{\widetilde{\mathrm{\δ}}P}_1\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_2\left(\tilde{v}\right){\mathrm{\γ}}_2}{P_1\left(\tilde{v}\right){\mathrm{\γ}}_3+\widetilde{\mathrm{\δ}}{P}_2\left(\tilde{v}\right){\mathrm{\γ}}_2+{\mathrm{\σ}}^2}),$

The user who newly increases in above formula and existing user's instantaneous through-put power is with be defined as rain scavenging coefficient be used for describing the impact of self-interference in full duplex transmission, value is determined by many factors, comprises bandwidth, antenna configuration and transmitted power; while trending towards 0 expression full duplex transmission, self-interference impact is very large; while trending towards 1 expression full duplex transmission, self-interference impact is almost negligible.

In such scheme, the power allocation scheme that in the non-cooperation of wireless network V-MIMO, QoS drives, model the optimization problem of guaranteed qos in non-cooperation V-MIMO, this problem is the available capacity that maximizes the user who newly increases under the available capacity of guaranteeing existing user, has then set up the QoS driving power allocative decision of guaranteed qos in non-cooperation V-MIMO.

The optimization problem conception of guaranteed qos in non-cooperation V-MIMO transmission

Existing user and newly increase user's available capacity in non-cooperation V-MIMO transmission, is expressed as C _2S(P ₁(υ ₁), P ₂(υ), θ) and C _1S(P ₁(υ ₁), P ₂(υ), θ), as follows:

For fixing QoS index θ, our target is to guarantee C _1S(P ₁(υ ₁), P ₂(υ), θ) maximize C when demand _2S(P ₁(υ ₁), P ₂(υ), θ), the optimization problem that therefore can construct non-cooperation V-MIMO transmission guaranteed qos is as follows:

P1：

st.： $1).C_{1S}(P_1\left(v_1\right),P_2\left(v\right),\mathrm{\θ})\≥{\stackrel{\_}{C}}_1;$

3).P ₂(v)≤P _peak，2，

P in above formula _{ave, 1}and P _{peak, 2}represent to newly increase respectively user's average power and the constraints of peak value, the constraints 1 in P1) represent that existing user's available capacity is more than or equal to the flow load of use constraints 2) and 3) represent that respectively newly increasing user need meet average power and peak power limitations.

In such scheme, QoS driving power allocative decision in the non-cooperation of wireless network half-duplex and full duplex V-MIMO: respectively by the optimization problem of having set up guaranteed qos in wireless network half-duplex and full duplex V-MIMO transmission, these two problems are all Strict Convex optimization problems, have then set up respectively QoS driving power allocative decision in the non-cooperation of wireless network half-duplex and full duplex V-MIMO.

Owing to having adopted technique scheme, compared with prior art, the present invention has gone out in the non-cooperation/cooperation of wireless network V-MIMO system the optimal power allocation scheme of supporting statistics QoS, and target is the available capacity that maximizes the available capacity that newly increases user and ensure simultaneously existing user.For mimo system in wireless network, the user who newly increases is used to power control techniques, restriction newly increases the interference that user brings existing user and maintains an acceptable level, thereby has ensured existing user's available capacity.By the cooperate optimization problem of guaranteed qos in V-MIMO of solution, obtain newly increasing the power allocation scheme that user's QoS drives.In wireless network cooperation V-MIMO half-duplex and full duplex system, the optimization problem of having constructed guaranteed qos in cooperation V-MIMO is strict protruding optimization problem.For this reason, the QoS driving power allocative decision that has proposed in the present invention to be applicable to existing user and newly increase user, this scheme can maximize the available capacity that newly increases user and ensure simultaneously existing user's available capacity, by Simulation Evaluation the power allocation scheme in non-cooperation/cooperation V-MIMO system.

The present invention is not limited to above-mentioned preferred implementation, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or akin technical scheme with the present invention, all belongs to protection scope of the present invention.

Claims (6)

1. In wireless many antennas virtual MIMO based on maximizing available capacity power allocation scheme, it is characterized in that: for mimo system in wireless network, the user who newly increases is used to power control techniques, restriction newly increases the interference that user brings existing user and maintains an acceptable level, thereby has ensured existing user's available capacity; By the optimization problem of guaranteed qos in cooperation V-MIMO, obtain the power allocation scheme of the QoS driving that newly increases user; In wireless network cooperation V-MIMO half-duplex and full duplex system, the optimization problem of having constructed guaranteed qos in cooperation V-MIMO is strict protruding optimization problem; For solving above-mentioned strict protruding optimization problem, the QoS driving power allocative decision that has proposed to be applicable to existing user He newly increased user, this scheme can maximize the available capacity that newly increases user and ensure simultaneously existing user's available capacity.
2. In wireless many antennas virtual MIMO according to claim 1 based on maximizing available capacity power allocation scheme, it is characterized in that: by existing user with newly increase user grouping and send data to base station, base station configuration N root antenna, reception antenna number is B _n(1≤n≤N); Existing user and the number of users newly increasing are respectively A ₁and A ₂, they share identical subchannel.
3. In wireless many antennas virtual MIMO according to claim 2 based on maximizing available capacity power allocation scheme, it is characterized in that: the statistics the limit of time delay of guaranteed qos in V-MIMO transmission;

   For uplink, the data of oneself are sent to base station by existing user, and in order to increase the degree of freedom and spatial multiplexing gain, the user who newly increases and existing user use identical subchannel, and forming virtual aerial array with existing user, this has caused the phase mutual interference between user;

   According to worst error criterion, for stochastic variable Q (∞) queue length Q (t), convergence meets

   $-\underset{Q_{\mathrm{th}}\→\∞}{\lim }\frac{\log \left(\mathrm{Pr}\right\{Q(\∞)>Q_{\mathrm{th}}\left\}\right)}{Q_{\mathrm{th}}}=\mathrm{\θ}$

   Q in above formula _threpresent queue length boundary line, parameter θ >0 is real number, θ is called again QoS index, represent the index rate of fading of time delay boundary line QoS violation rate, θ is larger, and expression rate of fading is faster, mean that system is stricter to the requirement of QoS, the less expression rate of fading of θ is slower, means that system is more lax to qos requirement; θ → ∞ means that system can't stand any delay, is exactly that system is very strict to qos requirement, and contrary θ → 0 means that system can tolerate any time delay, is exactly that system is lax to qos requirement.
4. In wireless many antennas virtual MIMO according to claim 2 based on maximizing available capacity power allocation scheme, it is characterized in that: cooperation V-MIMO transmission comprises:

   1), cooperation transmission pattern:

   Under collaboration mode, set up the time slot allocation scheme of user in V-MIMO group, this scheme is described below:

   Normalization one frame duration is 1 and a frame is divided into two states: state 1, and existing user is transmitted to base station as via node by the user's who newly increases signal, supposes that the duration is μ; State 2, newly increase and user is transmitted to base station as via node by existing user's signal, the duration is (1-μ); In cooperation V-MIMO transmission, use amplification forwarding agreement, in this agreement, via node simply amplifies reception signal and is then transmitted to destination; Convenient for formulation, definition cooperation CSI and QCSI are respectively with because existing user and the user who newly increases exist cooperation, they control transmitted power dynamically by instantaneous QCSI;

   2), cooperation half-duplex and the full duplex that cooperates:

   In the time of duration μ and (1-μ), can use half-or full-duplex mode transfer to via node; In the time using half-duplex transmission, first half frame time via node reception sources node signal, signal is transmitted to destination node by later half frame time via node; When using when full duplex transmission, the signal of via node reception sources node be transmitted to destination node in whole time frame;

   3), instantaneous transmission speed under half-duplex

   Under half-duplex AF agreement, use time slot allocation scheme, can obtain the user who newly increases and the existing user one frame instantaneous transmission speed of base station end, use respectively with be expressed as follows:

   $R_{2H}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))=\frac{\mathrm{\μBT}}{2}{\log }_2(1+2P_2\left(\tilde{v}\right){\mathrm{\γ}}_2+\frac{{4P}_2\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_1\left(\tilde{v}\right){\mathrm{\γ}}_1}{2P_2\left(\tilde{v}\right){\mathrm{\γ}}_3+2P_1\left(\tilde{v}\right){\mathrm{\γ}}_1+{\mathrm{\σ}}^2})$

   $R_{1H}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))=\frac{(1-\mathrm{\μ})\mathrm{\μBT}}{2}{\log }_2(1+2P_1\left(\tilde{v}\right){\mathrm{\γ}}_1+\frac{{4P}_1\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_2\left(\tilde{v}\right){\mathrm{\γ}}_2}{2P_1\left(\tilde{v}\right){\mathrm{\γ}}_3+2P_2\left(\tilde{v}\right){\mathrm{\γ}}_2+{\mathrm{\σ}}^2}),$

   In above formula, user 1 and user's 2 instantaneous through-put power is with in order to keep identical mean consumption power with full duplex transmission, the user who newly increases and existing user use in half-duplex transmission with

   4), full duplex instantaneous transmission speed:

   Under full duplex AF agreement, use time slot allocation scheme, can obtain the user who newly increases and the existing user one frame instantaneous transmission speed of base station end, use respectively with be expressed as follows:

   $R_{2F}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))=\frac{\mathrm{\μBT}}{2}{\log }_2(1+2P_2\left(\tilde{v}\right){\mathrm{\γ}}_2+\frac{{\widetilde{\mathrm{\δ}}P}_2\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_1\left(\tilde{v}\right){\mathrm{\γ}}_1}{P_2\left(\tilde{v}\right){\mathrm{\γ}}_3+\widetilde{\mathrm{\δ}}{P}_1\left(\tilde{v}\right){\mathrm{\γ}}_1+{\mathrm{\σ}}^2})$

   $R_{1F}(P_1\left(\tilde{v}\right),P_2\left(\tilde{v}\right))={(1-\mathrm{\μ})\mathrm{BT}\log }_2(1+P_1\left(\tilde{v}\right){\mathrm{\γ}}_1+\frac{{\widetilde{\mathrm{\δ}}P}_1\left(\tilde{v}\right){\mathrm{\γ}}_3{P}_2\left(\tilde{v}\right){\mathrm{\γ}}_2}{P_1\left(\tilde{v}\right){\mathrm{\γ}}_3+\widetilde{\mathrm{\δ}}{P}_2\left(\tilde{v}\right){\mathrm{\γ}}_2+{\mathrm{\σ}}^2}),$

   The user who newly increases in above formula and existing user's instantaneous through-put power is with be defined as rain scavenging coefficient be used for describing the impact of self-interference in full duplex transmission, value is determined by many factors, comprises bandwidth, antenna configuration and transmitted power; while trending towards 0 expression full duplex transmission, self-interference impact is very large; while trending towards 1 expression full duplex transmission, self-interference impact is almost negligible.
5. In wireless many antennas virtual MIMO according to claim 2 based on maximizing available capacity power allocation scheme, it is characterized in that: the power allocation scheme that in the non-cooperation of wireless network V-MIMO, QoS drives, model the optimization problem of guaranteed qos in non-cooperation V-MIMO, this problem is the available capacity that maximizes the user who newly increases under the available capacity of guaranteeing existing user, has then set up the QoS driving power allocative decision of guaranteed qos in non-cooperation V-MIMO.
6. In wireless many antennas virtual MIMO according to claim 2 based on maximizing available capacity power allocation scheme, it is characterized in that:

   QoS driving power allocative decision in the non-cooperation of wireless network half-duplex and full duplex V-MIMO: respectively by the optimization problem of having set up guaranteed qos in wireless network half-duplex and full duplex V-MIMO transmission, these two problems are all Strict Convex optimization problems, have then set up respectively QoS driving power allocative decision in the non-cooperation of wireless network half-duplex and full duplex V-MIMO.