CN102412884A - Device for realizing beamforming by adopting MIMO (multiple input multiple output) at 4G mobile terminal - Google Patents
Device for realizing beamforming by adopting MIMO (multiple input multiple output) at 4G mobile terminal Download PDFInfo
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- CN102412884A CN102412884A CN2011103668711A CN201110366871A CN102412884A CN 102412884 A CN102412884 A CN 102412884A CN 2011103668711 A CN2011103668711 A CN 2011103668711A CN 201110366871 A CN201110366871 A CN 201110366871A CN 102412884 A CN102412884 A CN 102412884A
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Abstract
The invention discloses a device for realizing beamforming by adopting MIMO (multiple input multiple output) in a 4G mobile terminal, relates to the technical field of wireless mobile communication, and particularly relates to a device for realizing beamforming by adopting MIMO in a 4G mobile terminal. The device for realizing beam forming by adopting MIMO at the 4G mobile terminal is formed by connecting a feed system, a power divider, a phase shifter, a T/R component and an antenna, wherein the feed system is connected with the power divider, the phase shifter is connected with the power divider, the power divider is connected with the T/R component, and the T/R component is connected with the antenna. The invention can fully utilize space resources by using the MIM0 technology, can effectively resist the influence of wireless channel fading under the condition of not increasing the system bandwidth and the total antenna transmitting power, greatly improves the frequency spectrum resource utilization rate and the channel capacity of the system, reduces the complexity of a circuit and reduces the cost of the system while improving the system performance by adopting an innovative design.
Description
Technical field
The present invention relates to the wireless mobile telecommunication technology field, particularly relate to a kind of device that adopts MIMO realization wave beam forming at the 4G portable terminal.
Background technology
Along with the continuous development of various radio communication services and broadband data service, it is more and more nervous that Radio Resource, especially frequency spectrum resource become, and how to utilize these limited communication resources to become the focus place of radio communication development of new techniques more efficiently.Smart antenna arises at the historic moment under this environment; The basic thought of smart antenna is: the spatial character of utilizing signal transmission is the control wave beam shaping adaptively; Adjust its directional diagram, follow the tracks of strong signal, reduce or the counteracting interference signal; The dried ratio of raising property, thus reach the purpose that reduces signal transmitting power, improves power system capacity.
MIMO (Multiple-Input Multiple-Out-put) technology is as the expansion of intelligent antenna technology; Transmitting terminal and receiving terminal at wireless communication system have all been settled many antennas; The signal processing when core concept of MIMO technology is sky promptly on the basis of the original time dimension, increases the space dimension through using many antennas; Thereby realize the multidimensional signal processing, obtain spatial reuse gain or space diversity gain.MIMO still has the advantage of traditional intelligence antenna, because the data process of mimo system is matrix channel but not vector channel, this is to improve performance or improve speed bigger possibility is provided.Mimo system not only can provide the more space diversity gain, and if know channel information in advance, mimo system can also be through the incompatible array gain that provides of sets of signals.In fact, mimo system is looked multipath wireless channel and emission, reception as a whole being optimized, thereby is realized the high message capacity and the availability of frequency spectrum.
But also there is following shortcoming and defect in above-mentioned prior art: traditional smart antenna terminal only is equipped with a plurality of antenna elements at transmitting terminal or receiving terminal, and normally in the base station, the channel capacity of Radio Link promotes limited; Signals transmission is because the frequency domain selectivity that multipath effect causes declines, and the availability of frequency spectrum is limited; Systems radiate is big, complicated circuit, and cost of manufacture is high.
Summary of the invention
In view of this, the objective of the invention is, provide a kind of and adopt MIMO to realize the device of wave beam forming at the 4G portable terminal to the problem that exists in the above-mentioned prior art.
For this reason; The invention provides a kind of device that adopts MIMO realization wave beam forming at the 4G portable terminal; Said device at 4G portable terminal employing MIMO realization wave beam forming is connected to form by feed system, power splitter, phase shifter, T/R assembly and antenna, and feed system is connected with power splitter, and phase shifter is connected with power splitter; Power splitter is connected with the T/R assembly, and the T/R assembly is connected with antenna.
Preferably, a kind ofly adopt MIMO to realize that feed system is connected with power splitter I in the device of wave beam forming at the 4G portable terminal described, power splitter I is connected with power splitter II, and power splitter II is connected with T/R assembly I, and T/R assembly I is connected with antenna I; Power splitter II is connected with T/R assembly III, and T/R assembly III is connected with antenna III; Power splitter I is connected with phase shifter, and phase shifter is connected with power splitter III, and power splitter III is connected with T/R assembly II, and T/R assembly II is connected with antenna II; Power splitter III is connected with T/R assembly IV, and T/R assembly IV is connected with antenna IV.
Preferably, said antenna is the MIMO antenna.
Preferably, said antenna is dipole-type antenna or loop aerial or micro-strip paster antenna.
Preferably, said phase shifter adopts Direct Digital Synthesizer and sheet internal inductance electric capacity to combine.
Visible by above technical scheme provided by the invention, the present invention has following technique effect:
Use the MIMO technology can make full use of space resources; Under the situation that does not increase system bandwidth and the total transmitting power of antenna, can effectively resist the influence of wireless channel decline, improve the frequency spectrum resource utilization rate and the channel capacity of system greatly; The design of having adopted innovation is when improving systematic function; Reduced the complexity of circuit, reduced the cost of system, be of great practical significance.
Description of drawings
Fig. 1 is a kind of circuit theory diagrams that adopt the device of MIMO realization wave beam forming at the 4G portable terminal provided by the invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is done further detailed description below in conjunction with accompanying drawing and execution mode.
Be the frequency domain selectivity decline of avoiding multipath effect to cause; Improve the availability of frequency spectrum and channel capacity; Reduce systems radiate, complexity and cost, instance of the present invention provides a kind of and has adopted MIMO to realize the device of wave beam forming at the 4G portable terminal, sees hereinafter for details and describes:
Traditional portable terminal is a single antenna owing to what adopt; The channel capacity and the availability of frequency spectrum are lower, can't satisfy the mobile subscriber of rapid growth and based on the mobile multi-media service of high speed data transfer efficient, in addition; Because the unique characteristics of mobile communication; Data will receive the influence of the various physical features in space, building and people's activity in transmission course, cause signal fadeout, and signal quality descends; Moreover the multipath effect of each interference between signals and signal also will cause signal fadeout, reduce signal quality.Adopt the multiple antenna communication of MIMO technology; Can effectively utilize multipath effect to combine space diversity and spatial reuse; Under the situation that does not increase extra frequency range and power; Increase exponentially channel capacity, the availability of frequency spectrum, quality and the transmission rate of communication system, so instance of the present invention preferably adopts the 4G portable terminal of MIMO antenna.
Said a kind of device at 4G portable terminal employing MIMO realization wave beam forming is connected to form by feed system, power splitter, phase shifter, T/R assembly and antenna; Feed system is connected with power splitter; Phase shifter is connected with power splitter; Power splitter is connected with the T/R assembly, and the T/R assembly is connected with antenna.
Preferably, a kind ofly adopt MIMO to realize that feed system is connected with power splitter I in the device of wave beam forming at the 4G portable terminal described, power splitter I is connected with power splitter II, and power splitter II is connected with T/R assembly I, and T/R assembly I is connected with antenna I; Power splitter II is connected with T/R assembly III, and T/R assembly III is connected with antenna III; Power splitter I is connected with phase shifter, and phase shifter is connected with power splitter III, and power splitter III is connected with T/R assembly II, and T/R assembly II is connected with antenna II; Power splitter III is connected with T/R assembly IV, and T/R assembly IV is connected with antenna IV.
Said antenna is the MIMO antenna.Adopt 4 MIMO antennas to produce a sharp-pointed narrow beam, concentration of energy in the defeated direction of tendency to develop, improved signal quality with directive property, and reduce and other users between interference, can be implemented in 2.4G simultaneously, three frequency ranges of 2.6G and 3.6G are communicated by letter.Adopt the MIMO technology to make channel have abundant scattering environments, make each interchannel independent as far as possible, thereby the better utilization multi-user diversity gain improves the reliability of transmission.
Said antenna is dipole-type antenna or loop aerial or micro-strip paster antenna.During concrete the realization, instance of the present invention does not limit this.
In order to improve the numerical control convenience, the method that said phase shifter can adopt Direct Digital Synthesizer and sheet internal inductance electric capacity to combine when specifically realizing, can also adopt other scheme to come phase modulation, and instance of the present invention does not limit this.
4 antennas both can be used as transmitting antenna and also can be used as reception antenna; Said phase shifter adjustment antenna phase produces the sharp-pointed wave beam with directive property, improves signal quality, and the interference between minimizing and other users; Said power splitter I links to each other with said feed system, for each antenna provides equal-wattage; Said feed system conversion external power supply provides required voltage for the native system device.
Further, need not carry out process and remould again, can bring the commercial device of having produced and directly use T/R assembly, power splitter and feed system; Saved cost required when reprocessing; Applicable scope is enlarged, and when specifically realizing, instance of the present invention does not limit this.
In sum; Instance of the present invention provides a kind of and has adopted MIMO to realize the device of wave beam forming at the 4G portable terminal, replaces traditional single antenna to realize wave beam forming through adopting the MIMO antenna, can make full use of space resources; Under the situation that does not increase system bandwidth and the total transmitting power of antenna; Reduce the influence of wireless channel decline, reduced systems radiate, improved the frequency spectrum resource utilization rate and the channel capacity of system; Realize and under 2.4G, three frequency ranges of 2.6G and 3.6G, to communicate by letter through 4 MIMO antennas are installed, adopt the sharp wave beam antenna, improved the robustness of communication; Adopt DDS and the phase-moving method that sheet internal inductance electric capacity combines, improved the convenience of processor numerical control; Rationally arrange the circuit of T/R assembly, phase shifter, power splitter and feed system to distribute, reduced the complexity of circuit, reduced the cost of system.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (5)
1. one kind is adopted MIMO to realize the device of wave beam forming at the 4G portable terminal; It is characterized in that: said device at 4G portable terminal employing MIMO realization wave beam forming is connected to form by feed system, power splitter, phase shifter, T/R assembly and antenna; Feed system is connected with power splitter; Phase shifter is connected with power splitter, and power splitter is connected with the T/R assembly, and the T/R assembly is connected with antenna.
2. a kind of device that adopts MIMO realization wave beam forming at the 4G portable terminal according to claim 1; It is characterized in that: described a kind of in the device of 4G portable terminal employing MIMO realization wave beam forming; Feed system is connected with power splitter I; Power splitter I is connected with power splitter II, and power splitter II is connected with T/R assembly I, and T/R assembly I is connected with antenna I; Power splitter II is connected with T/R assembly III, and T/R assembly III is connected with antenna III; Power splitter I is connected with phase shifter, and phase shifter is connected with power splitter III, and power splitter III is connected with T/R assembly II, and T/R assembly II is connected with antenna II; Power splitter III is connected with T/R assembly IV, and T/R assembly IV is connected with antenna IV.
3. a kind of device at 4G portable terminal employing MIMO realization wave beam forming according to claim 1, it is characterized in that: said antenna is the MIM0 antenna.
4. a kind of device at 4G portable terminal employing MIMO realization wave beam forming according to claim 1, it is characterized in that: said antenna is dipole-type antenna or loop aerial or micro-strip paster antenna.
5. a kind of device of realizing wave beam forming at 4G portable terminal employing MIMO according to claim 1, it is characterized in that: said phase shifter adopts Direct Digital Synthesizer and sheet internal inductance electric capacity to combine.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103668711A CN102412884A (en) | 2011-11-18 | 2011-11-18 | Device for realizing beamforming by adopting MIMO (multiple input multiple output) at 4G mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103668711A CN102412884A (en) | 2011-11-18 | 2011-11-18 | Device for realizing beamforming by adopting MIMO (multiple input multiple output) at 4G mobile terminal |
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| CN102412884A true CN102412884A (en) | 2012-04-11 |
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| CN2011103668711A Pending CN102412884A (en) | 2011-11-18 | 2011-11-18 | Device for realizing beamforming by adopting MIMO (multiple input multiple output) at 4G mobile terminal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105991149A (en) * | 2015-02-27 | 2016-10-05 | 中兴通讯股份有限公司 | Terminal signal transmit-receive device and method |
| CN109660285A (en) * | 2019-01-09 | 2019-04-19 | 西安电子科技大学 | Wave beam forming implementation method based on total reference in a kind of MIMO system |
| CN110311702A (en) * | 2018-03-22 | 2019-10-08 | 松下航空电子公司 | Short-distance wireless communication antenna system, aerial array and antenna optimizer |
| CN113162661A (en) * | 2020-01-22 | 2021-07-23 | 南京捷希科技有限公司 | Beam forming equipment and beam forming method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210636A (en) * | 1996-02-08 | 1999-03-10 | 奥林吉个人通讯服务公司 | Antenna arrangement |
| WO2009080057A1 (en) * | 2007-12-19 | 2009-07-02 | Telecom Italia S.P.A. | Method and system for switched beam antenna communications |
| CN102077413A (en) * | 2008-09-04 | 2011-05-25 | 阿尔卡特朗讯 | Method for multi-antenna signal processing at an antenna element arrangement, corresponding transceiver and corresponding antenna element arrangement |
-
2011
- 2011-11-18 CN CN2011103668711A patent/CN102412884A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210636A (en) * | 1996-02-08 | 1999-03-10 | 奥林吉个人通讯服务公司 | Antenna arrangement |
| WO2009080057A1 (en) * | 2007-12-19 | 2009-07-02 | Telecom Italia S.P.A. | Method and system for switched beam antenna communications |
| CN102077413A (en) * | 2008-09-04 | 2011-05-25 | 阿尔卡特朗讯 | Method for multi-antenna signal processing at an antenna element arrangement, corresponding transceiver and corresponding antenna element arrangement |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105991149A (en) * | 2015-02-27 | 2016-10-05 | 中兴通讯股份有限公司 | Terminal signal transmit-receive device and method |
| CN110311702A (en) * | 2018-03-22 | 2019-10-08 | 松下航空电子公司 | Short-distance wireless communication antenna system, aerial array and antenna optimizer |
| CN109660285A (en) * | 2019-01-09 | 2019-04-19 | 西安电子科技大学 | Wave beam forming implementation method based on total reference in a kind of MIMO system |
| CN109660285B (en) * | 2019-01-09 | 2021-04-20 | 西安电子科技大学 | Common reference-based beam forming implementation method in MIMO system |
| CN113162661A (en) * | 2020-01-22 | 2021-07-23 | 南京捷希科技有限公司 | Beam forming equipment and beam forming method |
| CN113162661B (en) * | 2020-01-22 | 2022-05-27 | 南京捷希科技有限公司 | Beam forming equipment and beam forming method |
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Application publication date: 20120411 |