CN102217210A - Method, apparatus, system for signal emission - Google Patents
Method, apparatus, system for signal emission Download PDFInfo
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- CN102217210A CN102217210A CN2011800007185A CN201180000718A CN102217210A CN 102217210 A CN102217210 A CN 102217210A CN 2011800007185 A CN2011800007185 A CN 2011800007185A CN 201180000718 A CN201180000718 A CN 201180000718A CN 102217210 A CN102217210 A CN 102217210A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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Abstract
The invention embodiment provides a method, an apparatus, and a system for signal emission, relating to the field of wireless communication, solving the problem of signal polarization cancellation, and conquering the defects of CDD technology. The method comprises: correcting at least two antennas; adjusting the phase difference between every two antennas to 90 degrees, or grouping the at least two antennas into two groups and adjusting the phase difference of the antennas in same group to zero degree and the phase difference of the antennas in different groups being adjusted to 90 degrees; and emitting the signals via the antennas whose phase difference being adjusted to 90 degrees. The invention embodiment is mainly applied to information emission and reception between base stations and traveling platforms, solving the problem of signal polarization cancellation and conquering the defects of CDD technology.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to launching technique, the Apparatus and system of signal.
Background technology
In the prior art, when adopting CDD (circulation delay diversity) mode to carry out the diversity transmission, the performance gain that this CDD technology is brought is unsettled, can cause the deterioration of performance under some channel circumstance on the contrary.Channel equivalence between BS in the CDD system (base station) and the MS (travelling carriage) superposes after being multiplied by different phase shifts for the channel of each transmitting antenna of BS between the MS reception antenna, and the result of this stack will make the channel aggravation of fluctuating on frequency domain.
For example, when channel is single footpath channel, it shows as the flat decline of frequency domain, through equivalent channel after the two antenna transmit CDD system is the frequency domain fading channel, it is identical that the deep fade point number of frequency domain and circulation time-delay are counted, and double antenna sent the power gain of bringing and can not compensate the deterioration of frequency domain deep fade to demodulation performance this moment.Along with increasing of number of transmit antennas, the cycle time-delay difference between the CDD system antenna strengthens, and channel is more violent in the frequency domain fluctuation, and demodulation performance worsens more serious.
The sending method of the another kind of signal of prior art is: cross polarised antenna is adopted in the base station, comprises two cross polarised antennas on the same antenna array, and the signal that two antenna transmission are identical obtains polarization diversity.
When the initial phase difference of base station+/-45 degree cross polarised antennas is 0, in the enhancing that will polarize of terminal vertical polarization directions, the counteracting that will polarize in the horizontal direction, the received signal intensity of terminal antenna horizontal positioned and vertical placement differs more than the 10dB.
As can be seen, adopt the method to send signal, when terminal adopts single-polarized antenna, and polarization reveals when not obvious, might cause terminal one side polarizations to disappear mutually.
Summary of the invention
Embodiments of the invention provide a kind of launching technique, Apparatus and system of signal, have solved the polarizations problem that disappears mutually, have got rid of the defective of CDD technology.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of launching technique of signal comprises:
At least two antennas are proofreaied and correct;
Phase difference between per two antennas in described at least two antennas is adjusted into 90 degree, perhaps, described at least two antennas are divided into two groups, and the phase difference between will each antenna in same group is adjusted into 0 degree, is adjusted into 90 degree at the phase difference between on the same group per two antennas not;
Signal to be transmitted is launched by the antenna that described phase difference is adjusted into 90 degree.
A kind of emitter of signal comprises:
Correcting unit is used at least two antennas are proofreaied and correct;
Adjustment unit, be used for the phase difference between per two antennas of described at least two antennas is adjusted into 90 degree, perhaps, described adjustment unit is used for described at least two antennas are divided into two groups, phase difference between will each antenna in same group is adjusted into 0 degree, is adjusted into 90 degree at the phase difference between on the same group per two antennas not;
Transmitter unit is used for signal to be transmitted is launched by the antenna that described phase difference is adjusted into 90 degree.A kind of emission system of signal comprises:
The base station, be used at least two antennas are proofreaied and correct, phase difference between per two antennas in described at least two antennas is adjusted into 90 degree, perhaps, described at least two antennas are divided into two groups, phase difference between will each antenna in same group is adjusted into 0 degree, is adjusted into 90 degree at the phase difference between on the same group per two antennas not, and signal to be transmitted is launched by the antennas that described phase difference is adjusted into 90 degree.
Portable terminal, being used to receive described base station is the signal of 90 degree antenna emissions by phase difference.
Adopt technique scheme, when signal launch, antenna is proofreaied and correct, make the phase difference between per two antennas be adjusted into 90 degree, perhaps the phase difference between on the same group per two antennas is not adjusted into 90 and spends.Adopt single-polarized antenna with terminal in the prior art, and polarization reveals when not obvious, the problem that might cause terminal one side polarizations to disappear is mutually compared, and the technical scheme that the embodiment of the invention provides has solved the problem that polarization disappears mutually; In existing C DD technology, exist signal cycle phase shift stack to make channel compare in the defective of frequency domain fluctuation aggravation, the embodiment of the invention has been got rid of the defective of CDD technology.
Description of drawings
The flow chart of the launching technique of the signal that Fig. 1 provides for the embodiment of the invention 1;
The structure chart of the emitter of the signal that Fig. 2 provides for the embodiment of the invention 2;
The structure chart of the emission system of the signal that Fig. 3 provides for the embodiment of the invention 3;
The flow chart of the launching technique of the signal that Fig. 4 provides for the embodiment of the invention 4;
The schematic diagram of the launching technique of the signal that Fig. 5 provides for the embodiment of the invention 4;
The flow chart of the launching technique of the signal that Fig. 6 provides for the embodiment of the invention 5;
The schematic diagram of the launching technique of the signal that Fig. 7 provides for the embodiment of the invention 5;
The structure chart of the emitter of the signal that Fig. 8 provides for the embodiment of the invention 6;
The structure chart of the emitter of the signal that Fig. 9 provides for the embodiment of the invention 7.
Embodiment
Be described in detail below in conjunction with launching technique, the Apparatus and system of accompanying drawing embodiment of the invention signal.
The launching technique of the signal that the embodiment of the invention provides as shown in Figure 1, comprising:
101, at least two antennas are proofreaied and correct;
102, the phase difference between per two antennas in described at least two antennas is adjusted into 90 degree, perhaps, described at least two antennas are divided into two groups, phase difference between will each antenna in same group is adjusted into 0 degree, is adjusted into 90 degree at the phase difference between on the same group per two antennas not;
103, signal to be transmitted is launched by the antenna that described phase difference is adjusted into 90 degree.
Particularly, said method can be carried out by the base station.
Adopt the launching technique of the signal that present embodiment provides, when signal launch, antenna is proofreaied and correct, make the phase difference between per two antennas be adjusted into 90 degree, perhaps the phase difference between on the same group per two antennas is not adjusted into 90 and spends.Adopt single-polarized antenna with terminal in the prior art, and polarization reveals when not obvious, the problem that might cause terminal one side polarizations to disappear is mutually compared, and the technical scheme that the embodiment of the invention provides has solved the problem that polarization disappears mutually; In existing C DD technology, exist signal cycle phase shift stack to make channel compare in the defective of frequency domain fluctuation aggravation, the embodiment of the invention has been got rid of the defective of CDD technology.
The emitter of the signal that the embodiment of the invention provides as shown in Figure 2, comprising: correcting unit 201, adjustment unit 202, transmitter unit 203.
Adopt the emitter of the signal that present embodiment provides, when signal launch, antenna is proofreaied and correct, make the phase difference between per two antennas be adjusted into 90 degree, perhaps the phase difference between on the same group per two antennas is not adjusted into 90 and spends.Adopt single-polarized antenna with terminal in the prior art, and polarization reveals when not obvious, the problem that might cause terminal one side polarizations to disappear is mutually compared, and the technical scheme that the embodiment of the invention provides has solved the problem that polarization disappears mutually; In existing C DD technology, exist signal cycle phase shift stack to make channel compare in the defective of frequency domain fluctuation aggravation, the embodiment of the invention has been got rid of the defective of CDD technology.
Embodiment 3
The emission system of the signal that the embodiment of the invention provides as shown in Figure 3, comprising: base station 301, portable terminal 302.
The base station, be used at least two antennas are proofreaied and correct, phase difference between per two antennas in described at least two antennas is adjusted into 90 degree, perhaps, described at least two antennas are divided into two groups, phase difference between will each antenna in same group is adjusted into 0 degree, is adjusted into 90 degree at the phase difference between on the same group per two antennas not, and signal to be transmitted is launched by the antennas that described phase difference is adjusted into 90 degree.
Portable terminal, being used to receive described base station is the signal of 90 degree antenna emissions by phase difference.
Adopt the emission system of the signal that present embodiment provides, when signal launch, antenna is proofreaied and correct, make the phase difference between per two antennas be adjusted into 90 degree, perhaps the phase difference between on the same group per two antennas is not adjusted into 90 and spends.Adopt single-polarized antenna with terminal in the prior art, and polarization reveals when not obvious, the problem that might cause terminal one side polarizations to disappear is mutually compared, and the technical scheme that the embodiment of the invention provides has solved the problem that polarization disappears mutually; In existing C DD technology, exist signal cycle phase shift stack to make channel compare in the defective of frequency domain fluctuation aggravation, the embodiment of the invention has been got rid of the defective of CDD technology.
Embodiment 4
The launching technique of the signal that the embodiment of the invention provides as shown in Figure 4, comprising:
401, signal source provides signal to be transmitted;
402, signal to be transmitted is carried out chnnel coding;
403, signal to be transmitted is shone upon;
404, signal to be transmitted is carried out OFDM (OFDM) modulation;
405, signal to be transmitted is added CP (Cyclic Prefix);
406, at least two antennas are proofreaied and correct; 407, the phase difference between per two antennas in described at least two antennas is adjusted into 90 degree;
Particularly, when cross polarised antenna was adopted in the base station, the phase difference of 2 on antenna 1 and antenna was 90 to spend among Fig. 5.
408, signal to be transmitted is launched by the antenna that described phase difference is adjusted into 90 degree.
Particularly, two antennas by above-mentioned cross polarised antenna transmit.
Adopt the launching technique of the signal that present embodiment provides, when signal launch, antenna is proofreaied and correct, make the phase difference between per two antennas be adjusted into 90 degree, perhaps the phase difference between on the same group per two antennas is not adjusted into 90 and spends.Adopt single-polarized antenna with terminal in the prior art, and polarization reveals when not obvious, the problem that might cause terminal one side polarizations to disappear is mutually compared, and the technical scheme that the embodiment of the invention provides has solved the problem that polarization disappears mutually; In existing C DD technology, exist signal cycle phase shift stack to make channel compare in the defective of frequency domain fluctuation aggravation, the embodiment of the invention has been got rid of the defective of CDD technology.
Embodiment 5
The launching technique of the signal that the embodiment of the invention provides as shown in Figure 6, comprising:
601, signal source provides signal to be transmitted;
602, signal to be transmitted is carried out chnnel coding;
603, signal to be transmitted is carried out MIMO (multiple-input, multiple-output) coding;
604, signal to be transmitted is shone upon;
605, signal to be transmitted is carried out the OFDM modulation;
606, signal to be transmitted is added CP;
607, at least two antennas are proofreaied and correct;
608, described at least two antennas are divided into two groups, phase difference between will each antenna in same group is adjusted into 0 degree, be adjusted into 90 degree at the phase difference between on the same group per two antennas not, and signal to be transmitted is launched by the antennas that described phase difference is adjusted into 90 degree.
Particularly, when transmitting by the antenna after the grouping, antenna A1, antenna A2 among Fig. 7 ... antenna An is one group, antenna B1, antenna B2 ... antenna Bn is one group; Antenna A1, antenna A2 ... the mutual phase difference of antenna An is 0 degree, antenna B1, antenna B2 ... the mutual phase difference of antenna Bn is 0 degree; Phase difference is 90 degree between antenna A1 and the antenna B1, and phase difference is 90 degree between antenna A2 and the antenna B2, and phase difference is 90 degree between antenna An and the antenna Bn.
609, signal to be transmitted is launched by the antenna that described phase difference is adjusted into 90 degree.
Particularly, be 90 degree as the phase difference between antenna A1 among Fig. 7 and antenna B1, and antenna A1 and antenna B1 launch same signal S1; Phase difference between antenna A2 and antenna B2 is 90 degree, and antenna A2 and antenna B2 launch same signal S2; By that analogy, the phase difference between antenna An and antenna Bn is 90 degree, and antenna An and antenna Bn launch same signal Sn.
Adopt the launching technique of the signal that present embodiment provides, when signal launch, antenna is proofreaied and correct, make the phase difference between per two antennas be adjusted into 90 degree, perhaps the phase difference between on the same group per two antennas is not adjusted into 90 and spends.Adopt single-polarized antenna with terminal in the prior art, and polarization reveals when not obvious, the problem that might cause terminal one side polarizations to disappear is mutually compared, and the technical scheme that the embodiment of the invention provides has solved the problem that polarization disappears mutually; In existing C DD technology, exist signal cycle phase shift stack to make channel compare in the defective of frequency domain fluctuation aggravation, the embodiment of the invention has been got rid of the defective of CDD technology.
Embodiment 6
The emitter of the signal that the embodiment of the invention provides as shown in Figure 8, comprising: signal source unit 801, coding unit 802, map unit 803, modulating unit 804, CP unit 805, correcting unit 806, adjustment unit 807, transmitter unit 808.
Signal source unit 801, be used to provide signal to be transmitted;
Add CP unit 805, be used for signal to be transmitted is added CP;
Correcting unit 806, be used at least two antennas are proofreaied and correct;
Adopt the emitter of the signal that present embodiment provides, when signal launch, antenna is proofreaied and correct, make the phase difference between per two antennas be adjusted into 90 degree, perhaps the phase difference between on the same group per two antennas is not adjusted into 90 and spends.Adopt single-polarized antenna with terminal in the prior art, and polarization reveals when not obvious, the problem that might cause terminal one side polarizations to disappear is mutually compared, and the technical scheme that the embodiment of the invention provides has solved the problem that polarization disappears mutually; In existing C DD technology, exist signal cycle displacement stack to make channel compare in frequency domain fluctuation aggravation defective, the embodiment of the invention has been got rid of the defective of CDD technology.
Embodiment 7
The emitter of the signal that the embodiment of the invention provides, as shown in Figure 9, comprising: signal source unit 901, coding unit 902, MIMO unit 903, map unit 904, modulating unit 905, CP unit 906, correcting unit 907, adjustment unit 908, transmitter unit 909.
Signal source unit 901, be used to provide signal to be transmitted;
Add CP unit 906, be used for signal to be transmitted is added CP;
Correcting unit 907, be used at least two antennas are proofreaied and correct;
Be used for the phase difference between per two antennas of described at least two antennas is adjusted into 90 degree, perhaps,
Adopt the emitter of the signal that present embodiment provides, when signal launch, antenna is proofreaied and correct, make the phase difference between per two antennas be adjusted into 90 degree, perhaps the phase difference between on the same group per two antennas is not adjusted into 90 and spends.Adopt single-polarized antenna with terminal in the prior art, and polarization reveals when not obvious, the problem that might cause terminal one side polarizations to disappear is mutually compared, and the technical scheme that the embodiment of the invention provides has solved the problem that polarization disappears mutually; In existing C DD technology, exist signal cycle displacement stack to make channel compare in frequency domain fluctuation aggravation defective, the embodiment of the invention has been got rid of the defective of CDD technology.
The embodiment of the invention is mainly used in carrying out information emission and reception between base station and the travelling carriage, has solved the polarizations problem that disappears mutually, has got rid of the defective of CDD technology.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection range with claim.
Claims (6)
1. the launching technique of a signal is characterized in that, comprising:
At least two antennas are proofreaied and correct;
Phase difference between per two antennas in described at least two antennas is adjusted into 90 degree, perhaps, described at least two antennas are divided into two groups, and the phase difference between will each antenna in same group is adjusted into 0 degree, is adjusted into 90 degree at the phase difference between on the same group per two antennas not;
Signal to be transmitted is launched by the antenna that described phase difference is adjusted into 90 degree.
2. according to the launching technique of the described signal of claim 1, it is characterized in that, described at least two antennas had been divided into before two groups, also comprise: described signal to be transmitted is carried out multiple-input, multiple-output MIMO coding.
3. the emitter of a signal is characterized in that, comprising:
Correcting unit is used at least two antennas are proofreaied and correct;
Adjustment unit, be used for the phase difference between per two antennas of described at least two antennas is adjusted into 90 degree, perhaps, described adjustment unit is used for described at least two antennas are divided into two groups, phase difference between will each antenna in same group is adjusted into 0 degree, is adjusted into 90 degree at the phase difference between on the same group per two antennas not;
Transmitter unit is used for signal to be transmitted is launched by the antenna that described phase difference is adjusted into 90 degree.
4. the emitter of signal according to claim 3 is characterized in that, also comprises:
The MIMO coding unit is used for signal to be transmitted is carried out multiple-input, multiple-output MIMO coding.
5. the emission system of a signal is characterized in that, comprising:
The base station, be used at least two antennas are proofreaied and correct, phase difference between per two antennas in described at least two antennas is adjusted into 90 degree, perhaps, described at least two antennas are divided into two groups, phase difference between will each antenna in same group is adjusted into 0 degree, is adjusted into 90 degree at the phase difference between on the same group per two antennas not, and signal to be transmitted is launched by the antennas that described phase difference is adjusted into 90 degree.
Portable terminal, being used to receive described base station is the signal of 90 degree antenna emissions by phase difference.
6. the emission system of signal according to claim 5 is characterized in that, described base station also is used for described at least two antennas had been divided into before two groups, and described signal to be transmitted is carried out multiple-input, multiple-output MIMO coding.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/075058 WO2011157147A2 (en) | 2011-05-31 | 2011-05-31 | Method, device and system for transmitting signals |
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| CN102217210A true CN102217210A (en) | 2011-10-12 |
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| CN2011800007185A Pending CN102217210A (en) | 2011-05-31 | 2011-05-31 | Method, apparatus, system for signal emission |
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| WO (1) | WO2011157147A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475609A (en) * | 2013-09-02 | 2013-12-25 | 华为技术有限公司 | Communication equipment, baseband unit and communication method |
| CN107959533A (en) * | 2016-10-17 | 2018-04-24 | 华为技术有限公司 | A kind of wireless device and radio-frequency channel calibration method |
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| CN101174865A (en) * | 2006-09-29 | 2008-05-07 | 美国博通公司 | Method and system for OFDM based mimo system with enhanced diversity |
| JP2009044495A (en) * | 2007-08-09 | 2009-02-26 | Masatoshi Tsuji | Power feeding circuit |
| CN101997591A (en) * | 2009-08-10 | 2011-03-30 | 雷凌科技股份有限公司 | Wireless transceiver, multi-input multi-output wireless communication system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001284943A (en) * | 2000-03-30 | 2001-10-12 | Sony Corp | Equipment and method for radio communication |
| JP2002319816A (en) * | 2001-04-24 | 2002-10-31 | Ee C Ii Tec Kk | Antenna system |
| TWI474557B (en) * | 2009-05-22 | 2015-02-21 | Fih Hong Kong Ltd | Antenna module |
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2011
- 2011-05-31 WO PCT/CN2011/075058 patent/WO2011157147A2/en active Application Filing
- 2011-05-31 CN CN2011800007185A patent/CN102217210A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174865A (en) * | 2006-09-29 | 2008-05-07 | 美国博通公司 | Method and system for OFDM based mimo system with enhanced diversity |
| JP2009044495A (en) * | 2007-08-09 | 2009-02-26 | Masatoshi Tsuji | Power feeding circuit |
| CN101997591A (en) * | 2009-08-10 | 2011-03-30 | 雷凌科技股份有限公司 | Wireless transceiver, multi-input multi-output wireless communication system and method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103475609A (en) * | 2013-09-02 | 2013-12-25 | 华为技术有限公司 | Communication equipment, baseband unit and communication method |
| CN103475609B (en) * | 2013-09-02 | 2016-11-09 | 华为技术有限公司 | Communication equipment, Base Band Unit and communication means |
| CN107959533A (en) * | 2016-10-17 | 2018-04-24 | 华为技术有限公司 | A kind of wireless device and radio-frequency channel calibration method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011157147A3 (en) | 2012-04-26 |
| WO2011157147A2 (en) | 2011-12-22 |
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Application publication date: 20111012 |