CN106302299A

CN106302299A - A kind of multiple-user access method and device

Info

Publication number: CN106302299A
Application number: CN201510260128.6A
Authority: CN
Inventors: 戴建强; 袁志锋
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-05-20
Filing date: 2015-05-20
Publication date: 2017-01-04
Anticipated expiration: 2035-05-20
Also published as: WO2016184241A1; CN106302299B

Abstract

A kind of multiple-user access method and device；Method includes: transmitter obtains the rotation angle information of the channel between receiver；Described transmitter rotates the modulation symbol being sent to described receiver according to described rotation angle information on the planisphere mapped；Postrotational modulation symbol is formed by described transmitter launches signal, and is sent to described receiver.The present invention can improve the efficiency of the information extracting or isolating each user from aliasing signal.

Description

A kind of multiple-user access method and device

Technical field

The present invention relates to wireless communication field, particularly to a kind of multiple-user access method and device.

Background technology

Multi-user access system, has orthogonal access way and nonopiate access way.In orthogonal access way The information of each user is above transmitted at mutually orthogonal " subchannel ", the most dry between each user Disturb, as (orthogonal in traditional TDMA (time division multiple acess), CDMA (CDMA), OFDMA Frequency division multiple access) broadly fall into orthogonal the category of accurate orthogonal access way technology.Another kind, the most nonopiate access Mode performance in theory is more preferable, and capacity circle is higher.Nonopiate access way refers to the information of each user In " whole passage " upper transmission, just because of this, system can utilize running time-frequency resource more fully, Reach higher capacity circle, but simultaneously, during receiver demodulation, faced by be that multiple user profile is aliasing in Information together, interferes between each user profile, and therefore receiver must be from aliasing information Extract or isolate the information of each user.

Nonopiate access way one typical scene is conventional multi-user multi-upstream access scene, and multiple accesses are eventually End or transmitter send respective information on identical running time-frequency resource, and receiver then needs from aliasing signal The middle information solving or isolating each access user respectively.Another kind of scene applies network code Bi-directional relaying (two-way-relay) scene: two terminals are by a relaying (can also be base station) Exchange data, terminal first sends each self-information on identical running time-frequency resource and first mixes two-way to relaying, relaying Folded signal processes, and usually from two-way aliasing signal, extracting directly goes out the " ratio of two user profile Special or " information, the most again this " bit XOR " information is broadcast to two terminals, two terminals connect After receiving this " bit XOR " information, it is tried again with the bit information oneself launched before XOR, then can solve the bit information of another terminal, so can complete primary information exchange.Can See that relaying is not the information needing to solve respectively or isolate two access terminals as traditional base station, But from aliasing signal, directly extract " bit XOR " result of two end messages.

In a word, no matter being which scene, how receiver overcomes the impact of wireless channel, and believes from aliasing The information extracting or isolating each user in breath efficiently is all a key issue.

Summary of the invention

The present invention proposes a kind of effect that can improve the information extracting or isolating each user from aliasing signal The scheme of rate, thus improve the systematic function of above-mentioned two nonopiate access scene.

In order to solve the problems referred to above, by the following technical solutions:

A kind of multiple-user access method, including:

Transmitter obtains the rotation angle information of the channel between receiver；

Described transmitter according to described rotation angle information the modulation symbol being sent to described receiver The planisphere mapped rotates；

Postrotational modulation symbol is formed by described transmitter launches signal, and is sent to described receiver.

Alternatively, between the acquisition of described transmitter and receiver, the rotation angle information of channel includes with lower section Any one in formula or its combination in any:

Obtained by the feedback signaling of described receiver；

Obtained by channel reciprocity.

Alternatively, the signal to noise ratio of the channel between described transmitter and described receiver is greater than or equal to the During one threshold value, the anglec of rotation represented by described rotation angle information is that described receiver is estimated according to channel The anglec of rotation corresponding at the channel response amplitude minimum obtained；

The signal to noise ratio of the channel between described transmitter and described receiver is less than or equal to first threshold Time, the angle represented by described rotation angle information is the channel that described receiver is estimated according to channel to obtain The anglec of rotation that response amplitude maximum is corresponding.

Alternatively, the angle represented by described rotation angle information includes that the anglec of rotation according to two points is adopted With interpolation obtain the anglec of rotation a little；Said two point is that described receiver is estimated according to channel First point arrived and second point.

Alternatively, a length of 2bit～5bit of described rotation angle information, for representing 0 degree～360 degree The anglec of rotation, and/or represent-360 degree～the anglecs of rotation of 0 degree.

Alternatively, described transmitter accords with, according to rotation angle information, the modulation being sent to described receiver Number carry out rotation and include on the planisphere mapped:

Anglec of rotation θ represented when described rotation angle information is timing, and described transmitter is to be sent to The modulation symbol of described receiver rotates θ on the planisphere mapped counterclockwise；When described rotation Anglec of rotation θ that angle information represents is for time negative, and described transmitter is the tune being sent to described receiver Symbol processed rotates θ on the planisphere mapped in the direction of the clock；

Or,

Anglec of rotation θ represented when described rotation angle information is timing, and described transmitter is to be sent to The modulation symbol of described receiver rotates θ, in the direction of the clock when described rotation on the planisphere mapped Anglec of rotation θ that angle information represents is for time negative, and described transmitter is the tune being sent to described receiver Symbol processed map planisphere on by rotating θ counterclockwise.

Alternatively, between the acquisition of described transmitter and receiver, the rotation angle information of channel includes:

Described transmitter receives Downlink Control Information from described receiver；From by described Downlink Control Information The signaling of transmission obtains described rotation angle information.

Described transmitter is according to anglec of rotation θ represented by rotation angle information, receiver to be sent to Modulation symbol be multiplied by e^jθOr e^-jθ。

Alternatively, described modulation symbol map planisphere include binary phase shift keying BPSK constellation, QPSK QPSK constellation, quadrature amplitude modulation qam constellation, Diamond constellation.

Alternatively, described modulation symbol includes data symbol and frequency pilot sign.

Alternatively, described transmitter includes user equipment (UE)；Described receiver includes base station or relaying joint Point.

A kind of multiple-user access method, including:

Receiver receives multi-user's aliasing signal；Described aliasing signal includes coming from least two transmitter Transmitting signal；Described transmitting signal is the rotation according to the channel between described receiver of the described transmitter Gyration information, institute after the modulation symbol that will be sent to described receiver is rotated on the planisphere mapped The symbol obtained is formed；

Described receiver extracts or isolates each transmitter from the described multi-user's aliasing signal received Information.

Alternatively, described receiver also includes before receiving multi-user's aliasing signal:

Described receiver sends signaling at least two transmitter, and described signaling includes the described anglec of rotation Information.

Alternatively, described receiver includes at least two transmitter transmission signaling:

Described receiver sends signaling by Downlink Control Information to described at least two transmitter.

Alternatively, described receiver sends at least two transmitter and also includes before signaling:

Described receiver is estimated to obtain described rotation angle information by channel.

Alternatively, by channel, described receiver estimates that obtaining described rotation angle information includes:

The signal to noise ratio of the channel between described transmitter and described receiver is greater than or equal to first threshold Time, described receiver will estimate the anglec of rotation corresponding at the channel response amplitude minimum that obtains according to channel As the anglec of rotation represented by described rotation angle information；

The signal to noise ratio of the channel between described transmitter and described receiver is less than or equal to first threshold Time, described receiver will estimate the anglec of rotation corresponding at the channel response amplitude maximum that obtains according to channel As the anglec of rotation represented by described rotation angle information.

Described receiver is estimated to obtain first point and the anglec of rotation of second point, according to institute according to channel State first point and the anglec of rotation of second point, use what interpolation obtained the anglec of rotation a little；Will Obtain the anglec of rotation a little as the angle represented by described rotation angle information.

Alternatively, described receiver is 0 degree when the anglec of rotation obtained according to channel estimation, 90 degree, 180 Degree, any one in 270 degree, or 0, pi/2, π, during any one in 3 pi/2s, using 0 as rotation Angle represented by angle information.

Alternatively, described receiver extracts or isolates from the described multi-user's aliasing signal received respectively The information of transmitter includes:

Described receiver demodulates the information of other transmitters with the interference of the first transmitter；

Described receiver carries out serial interference elimination SIC and removes the information demodulated；Demodulate described first The information of transmitter.

Described receiver solves the letter of multiple subscriber equipment from the described multi-user's aliasing signal received The result of the bit arithmetic of breath.

Alternatively, described bit arithmetic includes bit XOR, and operand is the information of subscriber equipment Whole bits or the partial bit of information of subscriber equipment.

A kind of multiple access device, is arranged in transmitter, including:

Acquisition module, for obtaining the rotation angle information of the channel between described transmitter and receiver；

Rotary module, for according with, according to described rotation angle information, the modulation being sent to described receiver Number map planisphere on rotate；

Sending module, launches signal for being formed by postrotational modulation symbol, and is sent to described reception Machine.

Alternatively, described acquisition module obtains the anglec of rotation letter of channel between described transmitter and receiver Cease and include any one in the following manner or its combination in any:

Obtained by the feedback signaling of described receiver；

Obtained by channel reciprocity.

Alternatively, described rotary module according to rotation angle information the modulation being sent to described receiver Symbol carries out rotation on the planisphere mapped and refers to:

Anglec of rotation θ that described rotary module represents when described rotation angle information is timing, to send On the planisphere mapped, θ is rotated counterclockwise to the modulation symbol of described receiver；When described rotation Anglec of rotation θ that gyration information represents is for, time negative, existing the modulation symbol being sent to described receiver θ is rotated in the direction of the clock on the planisphere mapped；

Or,

Anglec of rotation θ that described rotary module represents when described rotation angle information is timing, to send On the planisphere mapped, θ is rotated in the direction of the clock, when described rotation to the modulation symbol of described receiver Anglec of rotation θ that gyration information represents is for, time negative, existing the modulation symbol being sent to described receiver By rotating θ counterclockwise on the planisphere mapped.

Alternatively, described acquisition module obtains the anglec of rotation letter of channel between described transmitter and receiver Breath refers to:

Described acquisition module receives Downlink Control Information from described receiver；Believe from by described descending control The signaling of breath transmission obtains described rotation angle information.

Described rotary module is according to anglec of rotation θ represented by rotation angle information, to be sent to receive The modulation symbol of machine is multiplied by e^jθOr e^-jθ。

A kind of multiple access device, is arranged in receiver, including:

Receiver module, is used for receiving multi-user's aliasing signal；Described aliasing signal includes coming from least two The transmitting signal of individual transmitter；Described transmitting signal be described transmitter according to described receiver between The rotation angle information of channel, to be sent to the modulation symbol of described receiver on the planisphere mapped Symbol obtained by after rotation is formed；

Separation module, for extracting or isolate each transmitting from the described multi-user's aliasing signal received The information of machine.

Alternatively, described device also includes:

Signaling sending module, before receiving multi-user's aliasing signal at described receiver module, at least two Individual transmitter sends signaling, and described signaling includes described rotation angle information.

Alternatively, described signaling sending module refers to at least two transmitter transmission signaling:

Described signaling sending module sends signaling by Downlink Control Information to described at least two transmitter.

Alternatively, described device also includes:

Estimation module, is used in described signaling sending module before at least two transmitter sends signaling, logical Cross channel to estimate to obtain described rotation angle information.

Alternatively, by channel, described estimation module estimates that obtaining described rotation angle information refers to:

Described estimation module when channel between described transmitter and described receiver signal to noise ratio higher than or During equal to first threshold, the anglec of rotation corresponding at the channel response amplitude minimum that obtains will be estimated according to channel Degree is as the anglec of rotation represented by described rotation angle information；When described transmitter and described receiver it Between channel signal to noise ratio less than or equal to first threshold time, the channel response that will estimate to obtain according to channel The anglec of rotation corresponding at amplitude maximum is as the anglec of rotation represented by described rotation angle information.

Described estimation module is estimated to obtain first point and the anglec of rotation of second point according to channel, according to Described first point and the anglec of rotation of second point, use what interpolation obtained the anglec of rotation a little； Using obtain the anglec of rotation a little as the angle represented by described rotation angle information.

Alternatively, described estimation module is 0 degree when the anglec of rotation obtained according to channel estimation, 90 degree, 180 degree, any one in 270 degree, or 0, pi/2, π, during any one in 3 pi/2s, using 0 as Angle represented by rotation angle information.

Alternatively, described separation module extracts or isolates from the described multi-user's aliasing signal received The information of each transmitter refers to:

Described separation module demodulates the information of other transmitters with the interference of the first transmitter；Go here and there Row interference eliminates SIC and removes the information demodulated；Demodulate the information of described first transmitter.

Described separation module solves multiple subscriber equipment from the described multi-user's aliasing signal received The result of the bit arithmetic of information.

The invention provides a kind of multiple access scheme, transmitter obtains the rotation of channel between receiver After gyration information, the constellation modulation symbol of receiver to be sent to mapped according to rotation angle information Figure rotates, so that the reception symbol mapped constellation figure arriving receiver is to be equivalent to not rotated by channel , i.e. eliminate the angle rotation that channel brings.Postrotational symbol is formed and launches signal, and be sent to Receiver.Such as multi-user's multi-upstream access scene, eliminate the angle rotation that channel brings, can amplify adjacent Minimum euclidean distance between quadrant constellation point, thus improve user and be SIC (serial interference elimination) point Performance from multi-user information.Such as bi-directional relaying scene, eliminate the angle rotation that channel brings, can make Euclidean distance between the constellation point that " bit XOR " result of end message is different is exaggerated, it is thus possible to Efficient " bit XOR " result extracting end message from aliasing signal.In a word, the present invention Advantage is, can extract or isolate the information of each user efficiently from multi-user's aliasing signal.

Other features and advantages of the present invention will illustrate in the following description, and, partly from froming the perspective of Bright book becomes apparent, or understands by implementing the present invention.The purpose of the present invention is excellent with other Point can be realized by structure specifically noted in description, claims and accompanying drawing and be obtained ?.

Accompanying drawing explanation

Accompanying drawing is used for providing being further appreciated by technical solution of the present invention, and constitutes one of description Point, it is used for explaining technical scheme together with embodiments herein, is not intended that the present invention The restriction of technical scheme.

Fig. 1 is the flow chart of the multiple-user access method of the embodiment of the present invention one；

Fig. 2 is the flow chart of the multiple-user access method of the embodiment of the present invention two；

Fig. 3 is the schematic diagram of the multiple access device of the embodiment of the present invention three；

Fig. 4 is the schematic diagram of the multiple access device of the embodiment of the present invention four；

Fig. 5 is to implement the schematic diagram of the up nonopiate access scene of a kind of multi-user in example one；

Fig. 6 is to implement UE in example one conventionally to obtain launching the flow chart of signal；

Fig. 7 is to implement UE in example one to obtain launching the flow chart of signal according to the embodiment of the present invention；

Fig. 8 is to implement UE1 in example one to rotate the schematic diagram of symbol；

Fig. 9 (a) is to implement edge customer equipment UE 1 in example two to arrive the signal h of base station₁S1r's Schematic diagram；

Fig. 9 (b) is to implement central user equipment UE 2 in example two to arrive the signal h of base station₂S2r's Schematic diagram；

Fig. 9 (c) is to implement UE1, UE2 in example two to use the rotation processing of the present embodiment to send signal Time, the schematic diagram of multi-user's aliasing signal that base station receives；

Figure 10 (a) is to implement edge customer equipment UE 1 in example two to arrive the signal h of base station₁S1's Schematic diagram；

Figure 10 (b) is to implement central user equipment UE 2 in example two to arrive the signal h of base station₂S2's Schematic diagram；

When Figure 10 (c) is to implement UE1, UE2 employing traditional approach transmission signal in example two, base station The schematic diagram of the multi-user's aliasing signal received；

Figure 11 is to implement the present invention program in example two to contrast the analogous diagram of traditional scheme；

Figure 12 is to implement double relayings in example three to access the schematic diagram of scene；

Figure 13 (a) is to implement edge customer equipment UE 1 in example three to arrive the signal h of base station₁S1r's Schematic diagram；

Figure 13 (b) is to implement central user equipment UE 2 in example three to arrive the signal h of base station₂S2r's Schematic diagram；

Figure 13 (c) is to implement UE1, UE2 in example three to use the rotation processing of the present embodiment to send letter Number time, the schematic diagram of multi-user's aliasing signal that base station receives；

Figure 14 (a) is to implement edge customer equipment UE 1 in example three to arrive the signal h of base station₁S1's Schematic diagram；

Figure 14 (b) is to implement central user equipment UE 2 in example three to arrive the signal h of base station₂S2's Schematic diagram；

When Figure 14 (c) is to implement UE1, UE2 employing traditional approach transmission signal in example three, base station The schematic diagram of the multi-user's aliasing signal received；

Figure 15 is to implement UE1 in example four to rotate the schematic diagram of symbol；

Figure 16 (a) is to implement edge customer equipment UE 1 in example four to arrive the signal h of base station₁S1r's Schematic diagram；

Figure 16 (b) is to implement central user equipment UE 2 in example four to arrive the signal h of base station₂S2r's Schematic diagram；

Figure 16 (c) is to implement UE1, UE2 in example four to use the rotation processing of the present embodiment to send letter Number time, the schematic diagram of multi-user's aliasing signal that base station receives；

Figure 17 (a) is to implement edge customer equipment UE 1 in example four to arrive the signal h of base station₁S1's Schematic diagram；

Figure 17 (b) is to implement central user equipment UE 2 in example four to arrive the signal h of base station₂S2's Schematic diagram；

When Figure 17 (c) is to implement UE1, UE2 employing traditional approach transmission signal in example four, base station The schematic diagram of the multi-user's aliasing signal received.

Detailed description of the invention

Below in conjunction with drawings and Examples, technical scheme is described in detail.

If it should be noted that do not conflict, each feature in the embodiment of the present invention and embodiment can To be combined with each other, all within protection scope of the present invention.Although it addition, showing in flow charts and patrol Collect sequentially, but in some cases, can be to be different from shown or described by order execution herein Step.

Embodiment one, a kind of multiple-user access method, as it is shown in figure 1, include:

S101, transmitter obtain the rotation angle information of the channel between receiver；

S102, described transmitter according to described rotation angle information the modulation being sent to described receiver Symbol rotates on the planisphere mapped；

Postrotational modulation symbol is formed by S103, described transmitter launches signal, and connects described in being sent to Receipts machine；

Obtained by the feedback signaling of described receiver；

Obtained by channel reciprocity.

Wherein, can arrange when described signal to noise ratio is exactly equal to first threshold voluntarily, the described anglec of rotation is believed Angle represented by breath is the anglec of rotation corresponding at channel response amplitude maximum, or channel response amplitude The anglec of rotation corresponding at little.

Alternatively, the angle represented by described rotation angle information includes the anglec of rotation according to two points Use what interpolation obtained the anglec of rotation a little；Said two point is that described receiver is estimated according to channel First point obtained and second point.

Or

In one communication system, all in accordance with same rule carry out rotating (be the most all θ be timing up time Pin rotate), and determine rotation angle information (when the anglec of rotation that such as channel brings is counterclockwise, θ is just)；Selected rule can achieve the effect that and to be: rotation that described transmitter is carried out and letter It is contrary that road rotates effect, after making to transmit signals to reach receiver, receives signal cancellation and falls the rotation effect of channel Really so that arrive receiver receives what symbol mapped constellation figure was equivalent to not rotated by channel, i.e. launches The rotation that machine is carried out can eliminate the angle rotation that channel brings.It is to say, described transmitter according to Rotation that described rotation angle information is carried out and the rotation that channel brings, in opposite direction and size is identical.

Alternatively, modulation symbol map planisphere include BPSK (Binary Phase Shift Keying, Binary phase shift keying) constellation, QPSK (Quadrature Phase Shift Keyin, quadrature phase shift key Control) constellation, QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation) constellation, Qam constellation, Diamond constellation.

After rotation, the power of symbol is constant, and the size of the anglec of rotation changes size equal to phase place.

Embodiment two, a kind of multiple-user access method, as in figure 2 it is shown, include:

S201, receiver receive multi-user's aliasing signal；Described aliasing signal includes coming from least two The transmitting signal of transmitter；Described transmitting signal is that described transmitter is according to the letter between described receiver The rotation angle information in road, revolves the modulation symbol being sent to described receiver on the planisphere mapped Symbol obtained by after turning is formed；

S202, described receiver extract or isolate each from the described multi-user's aliasing signal received Penetrate the information of machine.

Alternatively, described receiver is at least two transmitter transmission signaling:

Alternatively, described receiver also includes before estimating to obtain described rotation angle information by channel: institute State receiver and obtain CQI (channel quality instruction) information of different user channel, believe including the anglec of rotation Breath, also includes the SNR information of subscriber channel, and wherein different user channel SNR can be different, also Can be equally.

Embodiment three, a kind of multiple access device, be arranged in transmitter, as it is shown on figure 3, include:

Acquisition module 31, for obtaining the anglec of rotation letter of the channel between described transmitter and receiver Breath；

Rotary module 32, is used for according to described rotation angle information the modulation being sent to described receiver Symbol rotates on the planisphere mapped；

Sending module 33, launches signal for being formed by postrotational modulation symbol, and connects described in being sent to Receipts machine.

Alternatively, described acquisition module 31 obtains the anglec of rotation of channel between described transmitter and receiver Degree information includes any one in the following manner or its combination in any:

Obtained by the feedback signaling of described receiver；

Obtained by channel reciprocity.

Alternatively, described rotary module 32 according to rotation angle information to be sent to described receiver Modulation symbol carries out rotation on the planisphere mapped and refers to:

Anglec of rotation θ that described rotary module 32 represents when described rotation angle information is timing, wanting The modulation symbol being sent to described receiver rotates θ on the planisphere mapped counterclockwise；Work as institute State anglec of rotation θ that rotation angle information represents for time negative, the modulation that will be sent to described receiver is accorded with Number map planisphere on rotate θ in the direction of the clock；

Or,

Anglec of rotation θ that described rotary module 32 represents when described rotation angle information is timing, wanting The modulation symbol being sent to described receiver rotates θ on the planisphere mapped in the direction of the clock, works as institute State anglec of rotation θ that rotation angle information represents for time negative, the modulation that will be sent to described receiver is accorded with Number map planisphere on by rotating θ counterclockwise.

Alternatively, described acquisition module 31 obtains the anglec of rotation of channel between described transmitter and receiver Degree information refers to:

Described acquisition module 31 receives Downlink Control Information from described receiver；From by described descending control The signaling of information processed transmission obtains described rotation angle information.

Described rotary module 32 is according to anglec of rotation θ represented by rotation angle information, to be sent to connect The modulation symbol of receipts machine is multiplied by e^jθOr e^-jθ。

Alternatively, the planisphere that described modulation symbol maps includes BPSK constellation, QPSK constellation, QAM Constellation, Diamond constellation.

Alternatively, described transmitter includes UE；Described receiver includes base station or via node.

Embodiment four, a kind of multiple access device, be arranged in receiver, as shown in Figure 4, and including:

Receiver module 41, is used for receiving multi-user's aliasing signal；Described aliasing signal includes coming from least The transmitting signal of two transmitters；Described transmitting signal be described transmitter according to described receiver between The rotation angle information of channel, to be sent to the modulation symbol of described receiver at the planisphere mapped Symbol obtained by after upper rotation is formed；

Separation module 42, for extracting or isolate each from the described multi-user's aliasing signal received Penetrate the information of machine.

Alternatively, described device also includes:

Alternatively, described separation module 42 extracts from the described multi-user's aliasing signal received or divides The information separating out each transmitter refers to:

Described separation module 42 demodulates the information of other transmitters with the interference of the first transmitter；Enter Row serial interference elimination SIC removes the information demodulated；Demodulate the information of described first transmitter.

Described separation module 42 solves multiple subscriber equipment from the described multi-user's aliasing signal received The result of bit arithmetic of information.

Above-described embodiment is further illustrated below by several enforcement examples.

Implement example one

It is a kind of up nonopiate access scene of multi-user as shown in Figure 5, two user equipment (UE) (UE1 With UE2) on identical running time-frequency resource, send information, here a Node to a reception point Node (node) For base station BS.The information of two subscriber equipment transmissions mixes arrival base station in Radio Resource, Base station separates the information demodulating two subscriber equipmenies from mixed signal.Also referred hereinafter as UE1 is that edge is used Family equipment, subscriber equipment centered by UE2.

In UE sending side, UE is according to the channel situation between it and BS, by the volume mating described channel Code modulation system modulation bit flow of information, obtains the modulation symbol of the information of subscriber equipment.As Fig. 6 be (bit information flow I1 is encoded to C1, re-modulation to the traditional processing mode in UE sending side by such as UE1 For modulation symbol S1；Bit information flow I2 coding is obtained C2 by UE2, and re-modulation is modulation symbol S2), Will bit information stream encryption, modulation after, then formed launch signal (such as modulation symbol S1 formed send out Penetrate signal T1, modulation symbol S2 and form transmitting signal T2).

If Fig. 7 is the embodiment of the present invention processing mode in UE sending side, will bit information stream encryption, After modulation, according to the rotation angle information obtained through a rotation processing, then form transmitting signal.Example As rotated in modulation symbol the S1 S1r that obtains, S1r are formed and launch signal T1；Modulation symbol S2 is rotated Obtain S2r, S2r and form transmitting signal T1.

Wherein, described UE obtains rotation angle information, refers to obtain the rotation of channel between it and base station Angle information, can be obtained by the signaling of base station feedback, i.e. base in FDD (FDD) system Stand in two transmitter feedback signalings, the described signaling of feedback, carry rotation angle information, described signaling Can be sent by Downlink Control Information.Channel reciprocity can be passed through in TDD (time division duplex) system Property obtains rotation angle information, it is not necessary to the above-mentioned signaling of base station feedback.

Described rotation angle information can be estimated to obtain by channel, and between UE and BS, channel is overall When SNR is greater than or equal to first threshold, described rotation angle information takes the channel obtained according to channel estimation The anglec of rotation corresponding at amplitude minimum in response, between UE and BS channel entirety SNR less than or During equal to first threshold, described rotation angle information takes estimates amplitude in the channel response obtained according to channel The anglec of rotation that maximum is corresponding.

Described rotation angle information can also be by the anglec of rotation of first point and the rotation of second point Between gyration, interpolation is used to obtain.The SNR of the channel of edge customer equipment and central user equipment The SNR of channel different.

Assuming that the anglec of rotation is timing, by rotating counterclockwise, the anglec of rotation is for, time negative, rotating clockwise； Rotation angle information includes 0 degree to 360 degree ,-360 degree to 0 tolerance chemical conversion 2bit, 3bit, 4bit, 5bit information, generally quantifies the anglec of rotation to 3bit to ensure performance.The anglec of rotation is θ.

Wherein, code word bits C1, C2 is modulated into symbol S1, S2, the planisphere that modulation symbol maps Including QPSK (QPSK) constellation, QAM (quadrature amplitude modulation) constellation, Diamond constellation In other constellations.Modulation symbol includes data symbol and frequency pilot sign.

UE revolves the modulation symbol of receiver to be sent to according to rotation angle information at the planisphere mapped Upper turning, the power of the symbol S1r, S2r that are obtained after rotating is constant, and the size of the anglec of rotation is equal to phase place Change size.S1 is rotated θ and can be expressed as S1*e^jθ, S2 is rotated θ and can be expressed as S2*e^jθ。 It is contrary that described rotation rotates effect with channel, after making to transmit signals to reach receiver, receives signal cancellation and falls The rotation effect of channel.Notice that channel here rotates and do not consider the noise impact on phase place.Work as the anglec of rotation Degree information is just 0 degree, ± 90 degree, ± 180 degree, ± 270 degree, or rotation 0, ± pi/2, ± π, During ± 3 pi/2, being equivalent to not rotate, the rotation angle information that base station is sent is 0.

Such as edge customer equipment, central user equipment all uses QPSK to modulate, the channel of edge customer The anglec of rotation be θ, the anglec of rotation of the channel of central user equipment is 0.Then Fig. 8 represents that edge is used QPSK modulation symbol is rotated by family equipment according to rotation angle information.Rotation and channel to modulation symbol Rotation effect contrary, channel rotates effect here is to rotate θ counterclockwise, then edge customer equipment will QPSK modulation symbol θ, the θ value that turns clockwise is positive number.

Postrotational modulation symbol is formed and launches signal by UE, and is sent to base station.

Implement example two

UE as implementing after method described in example one processes, signal that edge customer equipment UE 1 sends and in Heart user equipment (UE) 2 launch signal be aliasing in together in wireless channel transmitting procedure, base station need from Multi-user's aliasing signal is isolated the information of each subscriber equipment, uses SIC to separate here.Assume transmission Process is affected by wireless channel decline and white Gaussian noise, UE1 and UE2 revolves according to above-described embodiment Signal, then Signal averaging schematic diagram together such as Fig. 9 (a)～(c) during arrival base station is sent after Zhuaning, Wherein Fig. 9 (a) is the signal h that edge customer equipment UE 1 arrives base station₁The schematic diagram of S1r, Fig. 9 B () is the signal h that central user equipment UE 2 arrives base station₂The schematic diagram of S2r, Fig. 9 (c) is h₁·S1r And h₂Schematic diagram after S2r superposition.UE1, UE2 process transmission signal in a conventional manner, arrive base Signal averaging schematic diagram together such as Figure 10 (a)～(c) when standing, wherein Figure 10 (a) is that edge is used Family equipment UE 1 arrives the signal h of base station₁The schematic diagram of S1, Figure 10 (b) is central user equipment UE 2 Arrive the signal h of base station₂The schematic diagram of S2, Figure 10 (c) is h₁S1 and h₂Signal after S2 superposition Figure.Wherein h₁Represent the fading channel of edge customer equipment, h₂Represent the fading channel of central user.Empty Part in line circle represents that one of them superposed signal constellation point is by effect of noise.UE1 and UE2 When sending signal after rotating according to above-described embodiment, base station receives signal and is expressed as Y=h₁·S1r+h₂·S2r+n.N represents white Gaussian noise.

By Fig. 9 it can easily be seen that arrive the modulation symbol of the edge customer equipment of base station due to before at UE Do rotation processing, thus balance out the rotation effect of channel, relative to the tradition side shown in Figure 10 Method, with constellation axle as boundary, superposed signal is by (the portion that in such as figure, grid covers after noise jamming Point) more difficult cross the border, thus when solving the information of UE1, base station can be with the information of UE2 Interference directly demodulates the information of UE1, and constellation shown in Fig. 9 is relative to constellation shown in Figure 10, it is easier to Correctly solve the information of UE1；When solving the information of UE2, the most direct with the interference of the information of UE2 Demodulate the information of UE1, then, be SIC and remove the information of UE1, finally, demodulate UE2's Information, is naturally also easier to correctly solve the information of UE2.

In other words, having the beneficial effect that of the embodiment of the present invention, can more efficiently divide from aliasing information Separate out the information of each subscriber equipment.As shown in figure 11, in edge customer equipment and central user equipment phase During difference 3dB power, the performance of the edge customer equipment of this enforcement exemplary scenario is 10 in errored block rate^-2Time Gain reaches nearly 0.5dB.

Implement example three

A kind of bi-directional relaying scene as shown in figure 12, two user equipment (UE)s 1 with UE2 identical To receiving some Node transmission information on running time-frequency resource, Node is via node Relay here.Two use The information of family equipment mixes arrival via node in Radio Resource, and then Relay believes from aliasing " bit XOR " result of the information of two subscriber equipmenies is extracted in number.Last Relay is by this " ratio Special or " result is broadcast to two UE.

After implementing the transmitter processes process shown in Fig. 7 in example one, the signal of UE1 transmission and UE2 The signal sent is aliasing in together in wireless channel transmitting procedure, and Relay needs to carry from aliasing information Take out " bit XOR " result of the information of two subscriber equipmenies.Assume that transmitting procedure is declined by wireless channel Falling and white Gaussian noise affects, UE1 and UE2 sends signal after rotating according to above-described embodiment, then Signal averaging schematic diagram together such as Figure 13 (a)～(c) when arriving Relay, wherein Figure 13 (a) It is the edge customer equipment UE 1 signal h that arrives base station₁The schematic diagram of S1r, Figure 13 (b) is that center is used Family equipment UE 2 arrives the signal h of base station₂The schematic diagram of S2r, Figure 13 (c) is h₁S1r and h₂·S2r Schematic diagram after superposition.Figure 13 marked the bit information that various constellations point is mapped in planisphere, And marked " bit XOR " result of the information of two subscriber equipmenies in part aliasing information, such as In the middle of constellation, in four constellation symbol, the result of " the bit XOR " of the information of two subscriber equipmenies is S1 S2=11.UE1, UE2 process transmission signal in a conventional manner, and when arriving Relay, signal is folded The schematic diagram being added together such as Figure 14 (a)～(c), wherein Figure 14 (a) is edge customer equipment UE 1 Arrive the signal h of base station₁The schematic diagram of S1, Figure 14 (b) is that central user equipment UE 2 arrives base station Signal h₂The schematic diagram of S2, Figure 14 (c) is h₁S1 and h₂Schematic diagram after S2 superposition.Wherein h₁Represent the fading channel of UE1, h₂Represent the fading channel of UE2.

When UE1 and UE2 sends signal after rotating according to above-described embodiment, via node receives signal It is expressed as y=h₁·S1r+h₂S2r+n, n represent white Gaussian noise.The result of S1r S2r is directly solved by y, Without individually solving S1r or S2r.By Figure 13 it can easily be seen that arrive Relay UE1 symbol by Do rotation processing in before at UE1, thus balance out the rotation effect of channel, relative to Figure 14 Shown traditional method, can make between the constellation point that " bit XOR " result of UE information is different Euclidean distance is exaggerated, and the performance of demodulation " bit XOR " result is the best, it is thus possible to efficiently from mixed Folded signal extracts " bit XOR " result of two UE information.Take out " the bit of UE information XOR " after result, " bit XOR " result is broadcast to two UE, then can solve each user The information of equipment.In other words, having the beneficial effect that of the embodiment of the present invention, can be more efficiently from aliasing Information is isolated the information of each subscriber equipment.

Bit arithmetic in this enforcement example is bit XOR, and operand is the information of subscriber equipment Whole bits, the feelings of the partial bit of other bit arithmetic and information that operand is subscriber equipment Condition is not repeated.

Implement example four

Assume that edge customer equipment, central user equipment all use BPSK to modulate, edge customer equipment The anglec of rotation of channel is θ, and the anglec of rotation of the channel of central user equipment is 0.Then Figure 15 represents limit BPSK modulation symbol is rotated by edge subscriber equipment according to rotation angle information.To the rotation of modulation symbol with The rotation effect of channel is contrary, and channel rotates effect here is to rotate θ, then edge customer equipment counterclockwise Turn clockwise θ+pi/2 by BPSK modulation symbol, and θ value is positive number.

After UE processes as stated above, signal and central user equipment that edge customer equipment sends are launched Signal be aliasing in together in wireless channel transmitting procedure.Assume transmitting procedure by wireless channel decline and White Gaussian noise affects, UE1 and UE2 sends signal after rotating according to above-described embodiment, then arrive Signal averaging schematic diagram together such as Figure 16 (a)～(c) during base station, wherein Figure 16 (a) is edge User equipment (UE) 1 arrives the signal h of base station₁The schematic diagram of S1r, Figure 16 (b) is central user equipment UE2 arrives the signal h of base station₂The schematic diagram of S2r, Figure 16 (c) is h₁S1r and h₂After S2r superposition Schematic diagram shown in.UE1, UE2 process transmission signal in a conventional manner, and when arriving base station, signal is folded The schematic diagram being added together such as Figure 17 (a)～(c), wherein Figure 17 (a) is edge customer equipment UE 1 Arrive the signal h of base station₁The schematic diagram of S1, Figure 17 (b) is that central user equipment UE 2 arrives base station Signal h₂The schematic diagram of S2, Figure 17 (c) is h₁S1 and h₂Schematic diagram after S2 superposition.Wherein h₁Represent the fading channel of edge customer equipment, h₂Represent the fading channel of central user.Dashed circle portion Divide and represent that one of them superposed signal constellation point is by effect of noise.UE1 and UE2 is according to above-mentioned enforcement When example sends signal after rotating, base station receives signal and is expressed as y=h₁·S1r+h₂·S2r+n.N represents White Gaussian noise

By Figure 16 it can easily be seen that arrive the modulation symbol of the edge customer equipment of base station due to before at UE Done rotation processing, thus balanced out the rotation effect of channel, and with arrive base station central user The modulation symbol orthogonal relationship of equipment, relative to the traditional method shown in Figure 17, with constellation axle For boundary, superposed signal is crossed the border by after noise jamming, (part that in such as figure, grid covers) is more difficult, Thus when solving the information of UE1, base station can directly demodulate UE1 with the interference of the information of UE2 Information, and constellation shown in Figure 16 is relative to constellation shown in Figure 17, it is easier to correctly solve the information of UE1； When solving the information of UE2, first directly demodulate the information of UE1 with the interference of the information of UE2, so After, it is SIC and removes the information of UE1, finally, demodulate the information of UE2, be naturally also just easier to Really solve the information of UE2.

In other words, having the beneficial effect that of the embodiment of the present invention, can more efficiently divide from aliasing information Separate out the information of each subscriber equipment.

One of ordinary skill in the art will appreciate that all or part of step in said method can pass through journey Sequence instructs related hardware and completes, and described program can be stored in computer-readable recording medium, as only Read memorizer, disk or CD etc..Alternatively, all or part of step of above-described embodiment can also make Realize with one or more integrated circuits.Correspondingly, each module/unit in above-described embodiment can be adopted Realize by the form of hardware, it would however also be possible to employ the form of software function module realizes.The present invention is not restricted to The combination of the hardware and software of any particular form.

Although the embodiment that disclosed herein is as above, but described content only readily appreciates the present invention And the embodiment used, it is not limited to the present invention.Technology people in any art of the present invention Member, on the premise of without departing from the spirit and scope that disclosed herein, can be in the form implemented and thin Any amendment and change is carried out on joint, but the scope of patent protection of the present invention, still must be with appended right Claim is defined in the range of standard.

Claims

1. a multiple-user access method, including:

2. the method for claim 1, it is characterised in that described transmitter obtains and receiver Between the rotation angle information of channel include any one in the following manner or its combination in any:

Obtained by the feedback signaling of described receiver；

Obtained by channel reciprocity.

3. the method for claim 1, it is characterised in that:

The signal to noise ratio of the channel between described transmitter and described receiver is greater than or equal to first threshold Time, the anglec of rotation represented by described rotation angle information is that described receiver is estimated to obtain according to channel The anglec of rotation corresponding at channel response amplitude minimum；

4. the method for claim 1, it is characterised in that:

Angle represented by described rotation angle information includes that the anglec of rotation according to two points uses interpolation Obtain the anglec of rotation a little；Said two point is described receiver estimate to obtain according to channel the One point and second point.

5. the method for claim 1, it is characterised in that:

A length of 2bit～5bit of described rotation angle information, for representing 0 degree～the anglec of rotation of 360 degree, And/or represent-360 degree～the anglecs of rotation of 0 degree.

6. method as claimed in claim 5, it is characterised in that described transmitter is according to the anglec of rotation Information carries out rotation the modulation symbol being sent to described receiver on the planisphere mapped and includes:

Or,

7. the method for claim 1, it is characterised in that described transmitter obtains and receiver Between the rotation angle information of channel include:

8. the method for claim 1, it is characterised in that described transmitter is according to the anglec of rotation Information carries out rotation the modulation symbol being sent to described receiver on the planisphere mapped and includes:

9. the method for claim 1, it is characterised in that the constellation that described modulation symbol maps Figure includes that binary phase shift keying BPSK constellation, QPSK QPSK constellation, orthogonal amplitude are adjusted Qam constellation processed, Diamond constellation.

10. the method for claim 1, it is characterised in that:

Described modulation symbol includes data symbol and frequency pilot sign.

11. methods as according to any one of claim 1～10, it is characterised in that:

Described transmitter includes user equipment (UE)；Described receiver includes base station or via node.

12. 1 kinds of multiple-user access methods, including:

13. methods as claimed in claim 12, it is characterised in that described receiver receives multi-user Also include before aliasing signal:

14. methods as claimed in claim 13, it is characterised in that described receiver is at least two Transmitter sends signaling and includes:

15. methods as claimed in claim 13, it is characterised in that described receiver is at least two Transmitter also includes before sending signaling:

16. methods as claimed in claim 15, it is characterised in that described receiver is estimated by channel Meter obtains described rotation angle information and includes:

17. methods as claimed in claim 15, it is characterised in that described receiver is estimated by channel Meter obtains described rotation angle information and includes:

18. methods as described in claim 16 or 17, it is characterised in that:

Described receiver is 0 degree when the anglec of rotation obtained according to channel estimation, 90 degree, 180 degree, 270 Any one in degree, or 0, pi/2, π, during any one in 3 pi/2s, believes 0 as the anglec of rotation Angle represented by breath.

19. methods as claimed in claim 12, it is characterised in that:

20. methods as claimed in claim 12, it is characterised in that described receiver is from receiving The information extracting or isolating each transmitter in described multi-user's aliasing signal includes:

21. methods as claimed in claim 12, it is characterised in that described receiver is from receiving The information extracting or isolating each transmitter in described multi-user's aliasing signal includes:

22. methods as claimed in claim 21, it is characterised in that:

Described bit arithmetic includes bit XOR, and operand is whole ratios of the information of subscriber equipment The partial bit of the information of spy or subscriber equipment.

23. methods as according to any one of claim 12～22, it is characterised in that:

24. 1 kinds of multiple access devices, are arranged in transmitter, it is characterised in that including:

25. devices as claimed in claim 24, it is characterised in that described acquisition module obtains described Between transmitter and receiver the rotation angle information of channel include any one in the following manner or its Meaning combination:

Obtained by the feedback signaling of described receiver；

Obtained by channel reciprocity.

26. devices as claimed in claim 24, it is characterised in that:

27. devices as claimed in claim 24, it is characterised in that:

28. devices as claimed in claim 24, it is characterised in that:

29. devices as claimed in claim 28, it is characterised in that described rotary module is according to rotation Angle information carries out rotation the modulation symbol being sent to described receiver on the planisphere mapped Refer to:

Or,

30. devices as claimed in claim 24, it is characterised in that described acquisition module obtains described Between transmitter and receiver, the rotation angle information of channel refers to:

31. devices as claimed in claim 24, it is characterised in that described rotary module is according to rotation Angle information carries out rotation the modulation symbol being sent to described receiver on the planisphere mapped Refer to:

32. devices as claimed in claim 24, it is characterised in that the star that described modulation symbol maps Seat figure includes binary phase shift keying BPSK constellation, QPSK QPSK constellation, orthogonal amplitude Modulation qam constellation, Diamond constellation.

33. devices as claimed in claim 24, it is characterised in that:

Described modulation symbol includes data symbol and frequency pilot sign.

34. devices as according to any one of claim 24～33, it is characterised in that:

35. 1 kinds of multiple access devices, are arranged in receiver, it is characterised in that including:

36. devices as claimed in claim 35, it is characterised in that also include:

37. devices as claimed in claim 36, it is characterised in that described signaling sending module is to extremely Few two transmitters send signaling and refer to:

38. devices as claimed in claim 36, it is characterised in that also include:

39. devices as claimed in claim 38, it is characterised in that described estimation module passes through channel Estimate that obtaining described rotation angle information refers to:

40. devices as claimed in claim 38, it is characterised in that described estimation module passes through channel Estimate that obtaining described rotation angle information refers to:

41. devices as described in claim 39 or 40, it is characterised in that:

Described estimation module is 0 degree when the anglec of rotation obtained according to channel estimation, 90 degree, 180 degree, Any one in 270 degree, or 0, pi/2, π, during any one in 3 pi/2s, using 0 as the anglec of rotation Angle represented by information.

42. devices as claimed in claim 35, it is characterised in that:

43. devices as claimed in claim 35, it is characterised in that described separation module is from receiving Described multi-user's aliasing signal in extract or isolate the information of each transmitter and refer to:

44. devices as claimed in claim 35, it is characterised in that described separation module is from receiving Described multi-user's aliasing signal in extract or isolate the information of each transmitter and refer to:

45. devices as claimed in claim 44, it is characterised in that:

46. devices as according to any one of claim 35～45, it is characterised in that: