CN105577256A - Signal emission method and device - Google Patents

Signal emission method and device Download PDF

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Publication number
CN105577256A
CN105577256A CN201610089037.5A CN201610089037A CN105577256A CN 105577256 A CN105577256 A CN 105577256A CN 201610089037 A CN201610089037 A CN 201610089037A CN 105577256 A CN105577256 A CN 105577256A
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China
Prior art keywords
physical antenna
antenna
weighted factor
phase place
physical
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CN201610089037.5A
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Chinese (zh)
Inventor
黄晖
黄建波
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0465—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking power constraints at power amplifier or emission constraints, e.g. constant modulus, into account
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • 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
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/143—Downlink power control

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a signal emission method. Each sub carrier of 8 physical antennas is multiplied by a weighting factor of a specific phase, and the phases of weighting factors of any one antenna in the physical antennas 0, 1, 2, 3 and any one antenna in the physical antennas 4, 5, 6, 7 have one more Pi, and then signals are emitted. The signal emission method does not cause loss of the transmission power of a base station, and the sub carrier power fluctuation amplitude is relatively small, especially when one antenna has failures, the performance loss is not too large.

Description

A kind of signal transmitting method and device
Technical field
The present invention relates to the communications field, particularly relate to a kind of signal transmitting method in the communications field.
Background technology
Along with to the throughput of wireless communication system and the requirement of covering performance more and more higher, multiple-input and multiple-output (Multi-inputMulti-output, referred to as " MIMO ") technology and OFDM (Orthogonalfrequencydivisionmultiple, referred to as " OFDM ") technology be combined in order to focus, as Long Term Evolution (LongTermEvolution, referred to as " LTE ") system.In the application of MIMO technology, the quantity of logic data channels and physical data channel may not be reciprocity, need the corresponding relation both setting up, be mapped to physical data channel (or physical antenna port) by logic data channels (or logic port).Usually the transmission mode of 2 logic ports (hereinafter referred to as 2Port) is used in the LTE system of current commercialization, when base station uses 8 physical antenna ports to transmit, need to realize the mapping of 4 physical antenna ports (hereinafter referred to as antenna) to 1 logic port, as shown in Figure 1, Fig. 1 is a kind of signal transmitting method and the implementation structure of 8 antenna 2port in existing LTE system.
Prior art, when use 8 antenna transmission signal, adopts the implementation of broad beam or circulation delay diversity (CyclicDelayDiversity, referred to as " CDD ") usually.Wherein broad beam implementation transmits after each subcarrier of each physical antenna being multiplied by the identical weighted factor of phase place, this implementation in order to reach meet cell coverage requirements weighting after beam shape, the transmitting path that some physical antennas are corresponding must fall power emission, causes the loss of base station transmitting power; CDD implementation transmits after each subcarrier of each physical antenna being multiplied by the different weighted factor of phase place, and the performance gain that this implementation is brought possibly cannot make up sub-carrier signal and to fluctuate the performance loss brought.
Summary of the invention
For solving the technical problem that above-mentioned two kinds of prior aries are brought, first aspect, the invention provides a kind of signal transmitting method, described method is applied in the communication system comprising 2 logic ports and 8 physical antennas, described 2 logic ports are logic port 0,1, and described 8 physical antennas are physical antenna 0,1,2,3 and physical antenna 4,5,6,7; Comprise:
Be mapped to physical antenna 0,1,2,3 and physical antenna 4,5,6,7 by after the signal weighting of described logic port 0 and logic port 1, and launch described signal;
Wherein the amplitude of the weighted factor of each physical antenna is 1;
The phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is Δ 1*k, physical antenna 2,6 is Δ 2*k, physical antenna 3,7 is (Δ 1+ Δ 2) * k, and on this basis in physical antenna 0,1,2,3 in any one antenna and physical antenna 4,5,6,7 weighted factor of any one antenna phase place more than a π, wherein Δ 1 and Δ 2 are the phase difference between adjacent sub-carrier, and k is subcarrier number.
In the implementation that the first is possible, in conjunction with first aspect, the phase place of the weighted factor of described each physical antenna also comprises: the phase place of the weighted factor of physical antenna 1,2,3 is increased respectively again α 1, β 1, α 1 with β's 1 and; Wherein α 1 and β 1 is arbitrary angle value.
In the implementation that the second is possible, in conjunction with the first possible implementation of first aspect or first aspect, the phase place of the weighted factor of described each physical antenna also comprises: the phase place of the weighted factor of physical antenna 5,6,7 is increased respectively again α 2, β 2, α 2 with β's 2 and; Wherein α 2 and β 2 is arbitrary angle values.
In the implementation that the third is possible, in conjunction with the first possible implementation of first aspect, first aspect or the possible implementation of the second of first aspect, the phase place of the weighted factor of described each physical antenna also comprises: the phase place of the weighted factor of each physical antenna increased simultaneously again wherein it is arbitrary angle value.
Second aspect, the invention provides a kind of sender unit, be arranged in the communication system comprising 2 logic ports and 8 physical antennas, described 2 logic ports are logic port 0,1, described 8 physical antennas are physical antenna 0,1,2,3 and physical antenna 4,5,6,7, also comprise:
Processing module, is mapped to physical antenna 0,1,2,3 and physical antenna 4,5,6,7 by after the signal weighting of described logic port 0 and logic port 1;
Transmitter module, for launching described signal;
Wherein the amplitude of the weighted factor of each physical antenna is 1;
The phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is Δ 1*k, physical antenna 2,6 is Δ 2*k, physical antenna 3,7 is (Δ 1+ Δ 2) * k, and on this basis in physical antenna 0,1,2,3 in any one antenna and physical antenna 4,5,6,7 weighted factor of any one antenna phase place more than a π, wherein Δ 1 and Δ 2 are the phase difference between adjacent sub-carrier, and k is subcarrier number.
In the implementation that the first is possible, in conjunction with second aspect, the phase place of the weighted factor of described each physical antenna also comprises: the phase place of the weighted factor of physical antenna 1,2,3 is increased respectively again α 1, β 1, α 1 with β's 1 and; Wherein α 1 and β 1 is arbitrary angle value.
In the implementation that the second is possible, in conjunction with the first possible implementation of second aspect or second aspect, the phase place of the weighted factor of described each physical antenna also comprises: the phase place of the weighted factor of physical antenna 5,6,7 is increased respectively again α 2, β 2, α 2 with β's 2 and; Wherein α 2 and β 2 is arbitrary angle values.
In the implementation that the third is possible, in conjunction with the first possible implementation of second aspect, second aspect or the possible implementation of the second of second aspect, the phase place of the weighted factor of described each physical antenna also comprises: the phase place of the weighted factor of each physical antenna increased simultaneously again wherein it is arbitrary angle value.
The present invention is by being multiplied by the weighted factor of a particular phases by each subcarrier of 8 physical antennas, and by a π more than the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7, then transmit, this signal transmitting method can not cause the loss of base station transmitting power, sub-carrier power fluctuating range is also smaller, particularly when a road antenna breaks down, performance loss is not too large.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in the embodiment of the present invention below, apparently, accompanying drawing described is below only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of signal transmitting method and the implementation structure of 8 antenna 2port in existing LTE system;
Fig. 2 is another kind of signal transmitting method and the implementation structure of 8 antenna 2port in existing LTE system;
The structural representation of a kind of sender unit that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the another kind of sender unit that Fig. 4 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all should belong to the scope of protection of the invention.
Embodiment one
Present embodiments provide a kind of signal transmitting method, described method is applied in the communication system comprising 2 logic ports and 8 physical antennas, described 2 logic ports are logic port 0,1, and described 8 physical antennas are physical antenna 0,1,2,3 and physical antenna 4,5,6,7;
Antenna alleged in the present invention all refers to physical antenna, 8 physical antennas can be same polarization antenna or cross polarised antenna, the present embodiment for 4 row be corrected to array element, equally spaced, often row be described for positive 45 degree and the cross polarization physical antenna of bearing 45 degree.
Fig. 2 is a kind of implementation structure that this signal transmitting method adopts, as shown in Figure 2, through two Port signals of precoding (Precoding), again after weighting process, be mapped to 8 physical antennas respectively, mapping method can be by the signal map of logic port 0 to physical antenna 0,1,2,3, and by the signal map of logic port 1 to physical antenna 4,5,6,7; Also can be by the signal map of logic port 0 to physical antenna 4,5,6,7, and by the signal map of logic port 1 to physical antenna 0,1,2,3.
Wherein the amplitude of the weighted factor of each physical antenna is 1;
The phase place of the weighted factor of physical antenna 0,1,2,3 is respectively: 0, Δ 1*k, Δ 2*k, (Δ 1+ Δ 2) * k; The phase place of the weighted factor of physical antenna 4,5,6,7 is respectively: 0, Δ 3*k, Δ 4*k, (Δ 3+ Δ 4) * k, and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π, Δ 1, Δ 2, Δ 3, Δ 4 are respectively the phase difference between the adjacent sub-carrier of physical antenna 1,2,5,6, and k is subcarrier number.
When Δ 1=Δ 3, during Δ 2=Δ 4, the phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is Δ 1*k, physical antenna 2,6 is Δ 2*k, physical antenna 3,7 is (Δ 1+ Δ 2) * k, and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π.
After according to the method described above mapping being weighted to two Port signals, then launch described signal by each physical antenna.
Optionally, the phase place of the weighted factor of physical antenna 1 is increased α 1 again, the phase place of the weighted factor of physical antenna 2 is increased β 1 again, the phase place of the weighted factor of physical antenna 3 is increased again α 1 with β's 1 and; Wherein α 1 and β 1 is arbitrary angle value, and such as 0 degree to 2 π.
On the basis of above-mentioned possibility, the phase place of the weighted factor of physical antenna 5 can also be increased α 2 again, the phase place of the weighted factor of physical antenna 6 is increased β 2 again, the phase place of the weighted factor of physical antenna 7 is increased again α 2 with β's 2 and; Wherein α 2 and β 2 is arbitrary angle values, and such as 0 degree to 2 π.Namely the phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is respectively Δ 1*k+ α 1, Δ 1*k+ α 2, physical antenna 2,6 is respectively Δ 2*k+ β 1, Δ 2*k+ β 2, physical antenna 3,7 is respectively (Δ 1+ Δ 2) * k+ α 1+ β 1, (Δ 1+ Δ 2) * k+ α 2+ β 2, and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π.
Optionally, as α 1=α 2=α, during β 1=β 2=β, be just equivalent to the phase place of the weighted factor of physical antenna 1,5 to increase α again, the phase place of the weighted factor of physical antenna 2,6 is increased β again, the phase place of the weighted factor of physical antenna 3,7 is increased again α and β's and; Wherein α and β is arbitrary angle value.Namely the phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is Δ 1*k+ α, physical antenna 2,6 is Δ 2*k+ β, physical antenna 3,7 is (Δ 1+ Δ 2) * k+ alpha+beta, and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π.
Now can be expressed as following formula by being mapped to physical antenna 0,1,2,3 after the signal weighting of described logic port 0:
W 0＝[w 00w 01w 02w 03]
＝[1e -j[Δ1k+α]e -j[Δ2k+β]e -j[(Δ1+Δ2)k+α+β+π]]
Wherein W 0each Subcarrier's weight of the signal of presentation logic port 0; w 00, w 01, w 02, w 03represent physical antenna 0,1,2,3 respectively.
Following formula can be expressed as by being mapped to physical antenna 4,5,6,7 after the signal weighting of described logic port 1:
W 1＝[w 10w 11w 12w 13]
＝[1e -j[Δ1k+α]e -j[Δ2k+β+π]e -j[(Δ1+Δ2)k+α+β]]
Wherein W 1each Subcarrier's weight of the signal of presentation logic port one; w 10, w 11, w 12, w 13represent physical antenna 4,5,6,7 respectively.
In above-mentioned two formula, Δ 1=Δ 3, Δ 2=Δ 4, α 1=α 2=α, β 1=β 2=β, and add π in the phase place of the weighted factor of antenna 3 and antenna 6 respectively.
Optionally, on the basis of such scheme, the phase place of the weighted factor of each physical antenna can also be increased simultaneously again wherein be arbitrary angle value, such as 0 degree to 2 π.With α 1=α 2=α, be example during β 1=β 2=β, namely the phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is physical antenna 1,5 is physical antenna 2,6 is physical antenna 3,7 is and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π.
This signal transmitting method takes full advantage of the transmitting power of each physical antenna, can not cause the loss of base station transmitting power, and sub-carrier power fluctuating range is also smaller, and particularly when a road antenna breaks down, performance loss is not too large.
Embodiment two
Present embodiments provide a kind of sender unit, be connected with communication system, or be arranged in communication system, this communication system comprises 2 logic ports and 8 physical antennas, described 2 logic ports are logic port 0,1, and described 8 physical antennas are physical antenna 0,1,2,3 and physical antenna 4,5,6,7;
Antenna alleged in the present invention all refers to physical antenna, 8 physical antennas can be same polarization antenna or cross polarised antenna, the present embodiment for 4 row be corrected to array element, equally spaced, often row be described for positive 45 degree and the cross polarization physical antenna of bearing 45 degree.
Fig. 3 is a kind of structural representation of this sender unit, eliminates logic port and physical antenna in figure, and as shown in Figure 3, this sender unit comprises:
Processing module 31, is mapped to physical antenna 0,1,2,3 and physical antenna 4,5,6,7 by after the signal weighting of described logic port 0 and logic port 1;
Transmitter module 32, for launching described signal;
Wherein the amplitude of the weighted factor of each physical antenna is 1;
The phase place of the weighted factor of physical antenna 0,1,2,3 is respectively: 0, Δ 1*k, Δ 2*k, (Δ 1+ Δ 2) * k; The phase place of the weighted factor of physical antenna 4,5,6,7 is respectively: 0, Δ 3*k, Δ 4*k, (Δ 3+ Δ 4) * k, and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π, Δ 1, Δ 2, Δ 3, Δ 4 are respectively the phase difference between the adjacent sub-carrier of physical antenna 1,2,5,6, and k is subcarrier number.
When Δ 1=Δ 3, during Δ 2=Δ 4, the phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is Δ 1*k, physical antenna 2,6 is Δ 2*k, physical antenna 3,7 is (Δ 1+ Δ 2) * k, and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π.
Optionally, the phase place of the weighted factor of physical antenna 1 is increased α 1 again, the phase place of the weighted factor of physical antenna 2 is increased β 1 again, the phase place of the weighted factor of physical antenna 3 is increased again α 1 with β's 1 and; Wherein α 1 and β 1 is arbitrary angle value, and such as 0 degree to 2 π.
On the basis of above-mentioned possibility, the phase place of the weighted factor of physical antenna 5 can also be increased α 2 again, the phase place of the weighted factor of physical antenna 6 is increased β 2 again, the phase place of the weighted factor of physical antenna 7 is increased again α 2 with β's 2 and; Wherein α 2 and β 2 is arbitrary angle values, and such as 0 degree to 2 π.Namely the phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is respectively Δ 1*k+ α 1, Δ 1*k+ α 2, physical antenna 2,6 is respectively Δ 2*k+ β 1, Δ 2*k+ β 2, physical antenna 3,7 is respectively (Δ 1+ Δ 2) * k+ α 1+ β 1, (Δ 1+ Δ 2) * k+ α 2+ β 2, and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π.
Optionally, as α 1=α 2=α, during β 1=β 2=β, be just equivalent to the phase place of the weighted factor of physical antenna 1,5 to increase α again, the phase place of the weighted factor of physical antenna 2,6 is increased β again, the phase place of the weighted factor of physical antenna 3,7 is increased again α and β's and; Wherein α and β is arbitrary angle value.Namely the phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is Δ 1*k+ α, physical antenna 2,6 is Δ 2*k+ β, physical antenna 3,7 is (Δ 1+ Δ 2) * k+ alpha+beta, and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π.
Now can be expressed as following formula by being mapped to physical antenna 0,1,2,3 after the signal weighting of described logic port 0:
W 0＝[w 00w 01w 02w 03]
＝[1e -j[Δ1k+α]e -j[Δ2k+β]e -j[(Δ1+Δ2)k+α+β+π]]
Wherein W 0each Subcarrier's weight of the signal of presentation logic port 0; w 00, w 01, w 02, w 03represent physical antenna 0,1,2,3 respectively.
Following formula can be expressed as by being mapped to physical antenna 4,5,6,7 after the signal weighting of described logic port 1:
W 1＝[w 10w 11w 12w 13]
＝[1e -j[Δ1k+α]e -j[Δ2k+β+π]e -j[(Δ1+Δ2)k+α+β]]
Wherein W 1each Subcarrier's weight of the signal of presentation logic port one; w 10, w 11, w 12, w 13represent physical antenna 4,5,6,7 respectively.
In above-mentioned two formula, Δ 1=Δ 3, Δ 2=Δ 4, α 1=α 2=α, β 1=β 2=β, and add π in the phase place of the weighted factor of antenna 3 and antenna 6 respectively.
Optionally, on the basis of such scheme, the phase place of the weighted factor of each physical antenna can also be increased simultaneously again wherein be arbitrary angle value, such as 0 degree to 2 π.With α 1=α 2=α, be example during β 1=β 2=β, namely the phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is physical antenna 1,5 is physical antenna 2,6 is physical antenna 3,7 is and on this basis the phase place of the weighted factor of any one antenna in any one antenna in physical antenna 0,1,2,3 and physical antenna 4,5,6,7 is increased π.
This sender unit, when transmitting, takes full advantage of the transmitting power of each physical antenna, can not cause the loss of base station transmitting power, and sub-carrier power fluctuating range is also smaller, and particularly when a road antenna breaks down, performance loss is not too large.
Embodiment three:
Present embodiments provide a kind of sender unit, be arranged in the communication system comprising 2 logic ports and 8 physical antennas, Fig. 4 is a kind of structural representation of this sender unit, as shown in Figure 4, comprising:
Memory 41, for Stored Procedure code;
Processor 42, for according to the flow process code stored in memory 41, performs the signal weighting mapping method described in embodiment one;
Reflector 43, for launching the signal after described processor 42 weighting mapping.
Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with electronic hardware, computer software or the combination of the two, in order to the interchangeability of hardware and software is clearly described, generally describe composition and the step of each example in the above description according to function.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
Those skilled in the art can be well understood to, and for convenience of description and succinctly, the specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.
In several embodiments that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.In addition, shown or discussed coupling each other or direct-coupling or communication connection can be indirect coupling by some interfaces, device or unit or communication connection, also can be electric, machinery or other form connect.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of embodiment of the present invention scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, and also can be that the independent physics of unit exists, also can be that two or more unit are in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form of SFU software functional unit also can be adopted to realize.
If described integrated unit using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme of the present invention is in essence in other words to the part that prior art contributes, or all or part of of this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, working device, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
Should understand, the technical scheme of the embodiment of the present invention can be applied to Long Term Evolution (LongTermEvolution, referred to as " LTE ") system, LTE Frequency Division Duplexing (FDD) (Freq subscriber equipment ncyDivisionDuplex, referred to as " FDD ") system, LTE time division duplex (TimeDivisionDuplex, referred to as " TDD "), universal mobile telecommunications system (UniversalMobileTelecommunicationSystem, referred to as " UMTS "), global interconnection inserting of microwave (WorldwideInteroperabilityforMicrowaveAccess, referred to as " WiMAX ") communication system, microwave telecommunication system etc.
The above; be only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; can expect amendment or the replacement of various equivalence easily, these amendments or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims (12)

1. a base station, described base station applies is in the communication system comprising 2 logic ports and 8 physical antennas, and described 2 logic ports are logic port 0,1, and described 8 physical antennas are physical antenna 0,1,2,3 and physical antenna 4,5,6,7; It is characterized in that, described base station comprises:
Processor, for the signal of logic port 0 being mapped to after weighting process physical antenna 0,1,2,3 and the signal of logic port 1 being mapped to 4,5,6,7 after weighting process, or the signal of logic port 0 is mapped to after weighting process physical antenna 4,5,6,7 and the signal of logic port 1 is mapped to physical antenna 0,1,2,3 after weighting process;
Reflector, for launching described signal.
2. base station according to claim 1, is characterized in that, wherein the amplitude of the weighted factor of each physical antenna is 1;
The phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is Δ 1*k, physical antenna 2,6 is Δ 2*k, physical antenna 3,7 is (Δ 1+ Δ 2) * k, and on this basis in physical antenna 0,1,2,3 in any one antenna and physical antenna 4,5,6,7 weighted factor of any one antenna phase place more than a π, wherein Δ 1 and Δ 2 are the phase difference between adjacent sub-carrier, and k is subcarrier number.
3. base station according to claim 2, is characterized in that, the phase place of the weighted factor of described each physical antenna also comprises:
The phase place of the weighted factor of physical antenna 1,2,3 is increased respectively again α 1, β 1, α 1 with β's 1 and; Wherein α 1 and β 1 is arbitrary angle value.
4. according to the method in claim 2 or 3, it is characterized in that, the phase place of the weighted factor of described each physical antenna also comprises:
The phase place of the weighted factor of physical antenna 5,6,7 is increased respectively again α 2, β 2, α 2 with β's 2 and; Wherein α 2 and β 2 is arbitrary angle values.
5. the base station according to Claims 2 or 3, is characterized in that, the phase place of the weighted factor of described each physical antenna also comprises:
The phase place of the weighted factor of each physical antenna is increased simultaneously again wherein it is arbitrary angle value.
6. method according to claim 4, is characterized in that, the phase place of the weighted factor of described each physical antenna also comprises:
The phase place of the weighted factor of each physical antenna is increased simultaneously again wherein it is arbitrary angle value.
7. a signal transmitting method, be applied in the communication system comprising 2 logic ports and 8 physical antennas, described 2 logic ports are logic port 0,1, and described 8 physical antennas are physical antenna 0,1,2,3 and physical antenna 4,5,6,7, it is characterized in that, described method comprises:
The signal of logic port 0 be mapped to after weighting process physical antenna 0,1,2,3 and the signal of logic port 1 is mapped to 4,5,6,7 after weighting process, or the signal of logic port 0 be mapped to after weighting process physical antenna 4,5,6,7 and the signal of logic port 1 is mapped to physical antenna 0,1,2,3 after weighting process;
Launch described signal.
8. method according to claim 7, is characterized in that, wherein the amplitude of the weighted factor of each physical antenna is 1;
The phase place of the weighted factor of each physical antenna is respectively: physical antenna 0,4 is 0, physical antenna 1,5 is Δ 1*k, physical antenna 2,6 is Δ 2*k, physical antenna 3,7 is (Δ 1+ Δ 2) * k, and on this basis in physical antenna 0,1,2,3 in any one antenna and physical antenna 4,5,6,7 weighted factor of any one antenna phase place more than a π, wherein Δ 1 and Δ 2 are the phase difference between adjacent sub-carrier, and k is subcarrier number.
9. method according to claim 8, is characterized in that, the phase place of the weighted factor of described each physical antenna also comprises:
The phase place of the weighted factor of physical antenna 1,2,3 is increased respectively again α 1, β 1, α 1 with β's 1 and; Wherein α 1 and β 1 is arbitrary angle value.
10. method according to claim 8 or claim 9, it is characterized in that, the phase place of the weighted factor of described each physical antenna also comprises:
The phase place of the weighted factor of physical antenna 5,6,7 is increased respectively again α 2, β 2, α 2 with β's 2 and; Wherein α 2 and β 2 is arbitrary angle values.
11. methods according to claim 8 or claim 9, it is characterized in that, the phase place of the weighted factor of described each physical antenna also comprises:
The phase place of the weighted factor of each physical antenna is increased simultaneously again wherein it is arbitrary angle value.
12. methods according to claim 11, is characterized in that, the phase place of the weighted factor of described each physical antenna also comprises:
The phase place of the weighted factor of each physical antenna is increased simultaneously again wherein it is arbitrary angle value.
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