CN105515620A - Multi-user cooperative space modulation method - Google Patents
Multi-user cooperative space modulation method Download PDFInfo
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- CN105515620A CN105515620A CN201510882432.4A CN201510882432A CN105515620A CN 105515620 A CN105515620 A CN 105515620A CN 201510882432 A CN201510882432 A CN 201510882432A CN 105515620 A CN105515620 A CN 105515620A
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- node
- signal
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- source
- cooperation
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
- H04B7/026—Co-operative diversity, e.g. using fixed or mobile stations as relays
Abstract
The invention discloses a multi-user cooperative space modulation method. The multi-user cooperative space modulation method comprises the following steps: constructing a large scale cooperative multi-node communication model; activating antennas to send data by a source node through space modulation; appointing a relay node to receive signals, forwarding the received signals; receiving the signals by a target node, wherein the signals are sent directly by the source node and are forwarded by the relay node; reconstructing to obtain the original signals according to a detection algorithm by the target node. According to the method provided in the invention, the interference among the signals sent by multiple antennas is reduced through combining a general space modulation technique and a cooperative technique; the hardware configuration of the sending end is reduced; the cooperative grain is increased at the same time; and the performance of the cooperative communication system is improved.
Description
Technical field
The present invention relates to radio communication physical layer field, particularly relate to a kind of multi-user Cooperation modulating method, the present invention proposes the information transmission technology that a kind of universal space modulation system (activate antenna number and be greater than 1) combines with collaboration communication in extensive cooperation communication system.
Background technology
In the MassiveMIMO system of spaced antenna technical support, the interference between multiple antennas is a problem urgently processed.The antenna number increased gradually, while increase spatial gain, sends the increasing that signal interference also causes destination receiving demodulation complexity, thus is more unfavorable for the efficient communication of both sides.Part signal is modulated in a small amount of aerial position by the proposition of universal space modulation technique, thus reaches the object of carrying a large amount of signal with a small amount of antenna.And collaboration communication achieves the integrated communication quality of extensive communication system well, both being combined at present is study hotspot.
Summary of the invention
The invention provides a kind of multi-user Cooperation modulating method, present invention, avoiding interference each other when multiple antenna sends signal, simultaneously by the cooperation forward signal between multinode, for the purpose of node increase diversity gain, improve the performance of cooperation communication system, described below:
A kind of multi-user Cooperation modulating method, described multi-user Cooperation modulating method comprises the following steps:
Build extensive cooperation multi-node communication model; Source node activates antenna by spatial modulation and sends data;
Specify via node Received signal strength, and forward to the received signal;
Destination node receives the signal that source node directly sends and via node forwards;
Destination node is according to detection algorithm, and reconstruct obtains primary signal.
Wherein, described extensive cooperation multi-node communication model comprises: source node S, via node R and destination node D,
Wherein, source node S adopts multiple antenna configuration, and sends signal by spatial modulation, and via node R and destination node D is single antenna and configures, and multiple via node R cooperates forward signal to destination node D;
Source node configuration N transmit antennas, forwards through M relay node cooperation, communicates with destination node; The antenna number that source node activates is N
a, sending signal indication is:
Wherein, N is had in transmission signal x
aindividual nonzero element; T represents transposition.
Wherein, the Received signal strength of via node and destination node is:
y
sr＝H
srx+n
sr
y
sd＝H
sdx+n
sd
Wherein,
for via node R Received signal strength;
for source node S is to the channel matrix of via node R;
for the interchannel noise vector between source node S and via node R;
for plural number set;
for the purpose of node receive source signal;
for source node is to the main channel of destination node;
for source node is to the interchannel noise vector of destination node.
Wherein, the forward signal of destination node reception via node is:
the relay forwarding signal received of destination node D is:
y
rd＝H
rdy
sr+n
rd
＝H
rd(H
srx+n
sr)+n
rd
＝Hx+n
Wherein, H=H
rd× H
srfor combined channel matrix, n=H
rd× n
sr+ n
rdfor combined channel overall noise vector; H
rdfor the channel matrix of via node R to destination node D; n
rdfor noise.
The beneficial effect of technical scheme provided by the invention is: general space-modulation technique combines with cooperation technology by the present invention, reduce the interference between multiple antennas transmission signal, and reduce the hardware configuration of transmitting terminal, increase cooperative gain simultaneously, improve the performance of cooperation communication system.
Accompanying drawing explanation
Fig. 1 is extensive cooperation multi-node communication model schematic;
Fig. 2 is a kind of flow chart of multi-user Cooperation modulating method.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below embodiment of the present invention is described further in detail.
Space-modulation technique is a kind of modulation technique simultaneously utilizing conventional modulated symbol and transmitting antenna position carry information.In General Spatial modulation, only there is some antennas to be activated to send data, therefore solve the problem that multiple antennas sends signal disturbing well.The introducing of cooperation technology simultaneously adds diversity gain to destination node.
A kind of multi-user Cooperation modulating method, see Fig. 1 and Fig. 2, this modulator approach comprises the following steps:
101: build extensive cooperation multi-node communication model;
Wherein, this multi-node communication model that cooperates on a large scale comprises: source node S, via node R and destination node D, source node S adopts multiple antenna (1 to N) to configure, and utilize general space-modulation technique to send signal, via node R and destination node D is single antenna and configures, multiple via node R (R
1to R
m) cooperation forward signal to destination node D.This cooperation multinode mode is specially:
Source node configuration N transmit antennas, forwards through M relay node cooperation, communicates with destination node.Suppose that the antenna number that source node activates is N
a, sending signal can be expressed as:
Wherein, N is had in transmission signal x
aindividual nonzero element; T represents transposition.
102: source node S adopts general space-modulation technique to activate antenna and sends data;
During specific implementation, general space-modulation technique can be: first utilize traditional modulation to modulate information to be transmitted, and then selects the correspondence mappings sending symbol and antenna combination, transmission symbol-modulated is sent on selected aerial position.So all send signal to be signal that conventional modulated symbol carries and the signal sum that aerial position is carried.
Wherein: Α is conventional modulated alphabet.
103: specify via node R Received signal strength, and forward to the received signal;
104: destination node D receives the signal that source node S directly sends and via node R forwards;
105: destination node D according to certain detection algorithm, and reconstruct obtains primary signal.
During specific implementation, destination node D utilizes certain detection algorithm to detect source node S and directly sends and via node R forward signal, obtains primary signal and the error rate.
Wherein, in cooperation communication system, signal merge algorithm has: Maximal ratio combiner (MRC:MaximalRatioCombining), equal gain combining (EGC:EqualGainCombing), selection combination (SC:SelectingCombing).Detection algorithm can be: the methods such as Minimum Mean Square Error detection, Maximum Likelihood Detection, matched filter detection).
Wherein, the first time slot, the Received signal strength of via node R and destination node D:
y
sr＝H
srx+n
sr(2)
y
sd＝H
sdx+n
sd(3)
Wherein,
for via node R Received signal strength;
for source node S is to the channel matrix of via node R;
for the interchannel noise vector between source node S and via node R;
for plural number set;
for the purpose of node receive source signal;
for source node is to the main channel of destination node;
for source node is to the interchannel noise vector of destination node.
Wherein, the second time slot, destination node D receives via node R forward signal:
If the Received signal strength of destination node D is
the channel matrix of via node R to destination node D is
noise is
the relay forwarding signal received of destination node D is:
y
rd＝H
rdy
sr+n
rd
＝H
rd(H
srx+n
sr)+n
rd(4)
＝Hx+n
Wherein, H=H
rd× H
srfor combined channel matrix, n=H
rd× n
sr+ n
rdfor combined channel overall noise vector.
In sum, the embodiment of the present invention avoids interference each other when multiple antenna sends signal by above-mentioned steps 101-step 105, simultaneously by the cooperation forward signal between multinode, for the purpose of node increase diversity gain, improve the performance of cooperation communication system.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a multi-user Cooperation modulating method, is characterized in that, described multi-user Cooperation modulating method comprises the following steps:
Build extensive cooperation multi-node communication model; Source node activates antenna by spatial modulation and sends data;
Specify via node Received signal strength, and forward to the received signal;
Destination node receives the signal that source node directly sends and via node forwards;
Destination node is according to detection algorithm, and reconstruct obtains primary signal.
2. a kind of multi-user Cooperation modulating method according to claim 1, is characterized in that, described extensive cooperation multi-node communication model comprises: source node S, via node R and destination node D,
Wherein, source node S adopts multiple antenna configuration, and sends signal by spatial modulation, and via node R and destination node D is single antenna and configures, and multiple via node R cooperates forward signal to destination node D;
Source node configuration N transmit antennas, forwards through M relay node cooperation, communicates with destination node; The antenna number that source node activates is N
a, sending signal indication is:
Wherein, N is had in transmission signal x
aindividual nonzero element; T represents transposition.
3. a kind of multi-user Cooperation modulating method according to claim 1 and 2, is characterized in that, the Received signal strength of via node and destination node is:
y
sr＝H
srx+n
sr
y
sd＝H
sdx+n
sd
Wherein,
for via node R Received signal strength;
for source node S is to the channel matrix of via node R;
for the interchannel noise vector between source node S and via node R;
for plural number set;
for the purpose of node receive source signal;
for source node is to the main channel of destination node;
for source node is to the interchannel noise vector of destination node.
4. a kind of multi-user Cooperation modulating method according to claim 3, is characterized in that, the forward signal that destination node receives via node is:
the relay forwarding signal received of destination node D is:
y
rd＝H
rdy
sr+n
rd
＝H
rd(H
srx+n
sr)+n
rd
＝Hx+n
Wherein, H=H
rd× H
srfor combined channel matrix, n=H
rd× n
sr+ n
rdfor combined channel overall noise vector; H
rdfor the channel matrix of via node R to destination node D; n
rdfor noise.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959045A (en) * | 2016-04-25 | 2016-09-21 | 郑州大学 | Multi-user generalized spatial modulation system phase adjusting linear precoding method |
| CN106027126A (en) * | 2016-05-19 | 2016-10-12 | 南京航空航天大学 | Spatial modulation method based on relay cooperation in MIMO (Multiple-Input Multiple-Output) system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080304555A1 (en) * | 2005-11-29 | 2008-12-11 | Peter Larsson | Method and Arrangement for Improved Relaying |
| CN104184510A (en) * | 2014-09-05 | 2014-12-03 | 西安电子科技大学 | Asymmetric two-way relay method based on spatial modulation |
| CN104994496A (en) * | 2015-06-26 | 2015-10-21 | 西安交通大学 | Physical layer secure transmission method based on distributed spatial modulation |
-
2015
- 2015-12-03 CN CN201510882432.4A patent/CN105515620A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080304555A1 (en) * | 2005-11-29 | 2008-12-11 | Peter Larsson | Method and Arrangement for Improved Relaying |
| CN104184510A (en) * | 2014-09-05 | 2014-12-03 | 西安电子科技大学 | Asymmetric two-way relay method based on spatial modulation |
| CN104994496A (en) * | 2015-06-26 | 2015-10-21 | 西安交通大学 | Physical layer secure transmission method based on distributed spatial modulation |
Non-Patent Citations (1)
| Title |
|---|
| 马宁: "广义多天线系统中的空间调制技术研究", 《中国博士学位论文全文数据库（电子期刊）》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105959045A (en) * | 2016-04-25 | 2016-09-21 | 郑州大学 | Multi-user generalized spatial modulation system phase adjusting linear precoding method |
| CN105959045B (en) * | 2016-04-25 | 2019-10-18 | 郑州大学 | A kind of multi-user's generalized spatial modulation system phase adjustment linear pre-coding method |
| CN106027126A (en) * | 2016-05-19 | 2016-10-12 | 南京航空航天大学 | Spatial modulation method based on relay cooperation in MIMO (Multiple-Input Multiple-Output) system |
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Application publication date: 20160420 |