CN101043242A - Method, apparatus and transceiver for controlling transmitting antenna power - Google Patents
Method, apparatus and transceiver for controlling transmitting antenna power Download PDFInfo
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Abstract
The invention relates to communication technology, specially a method, device and receiver of controlling power of emission antenna in multi input multi output system, in current technology, when Me=Mt, the power distributing mode of adopting virtual antenna can generate bigger power variance between the emission antennas to induce obvious Flashlight effect, that can be resolved. Said method includes: the receiving end ensures and feedbacks the number of virtual antenna needed by current time interval TTI; the emission end judges whether number of said virtual antenna is equal with the number of real emission antenna, if the number of said virtual antenna is equal with the number of real emission antenna, the emission power of the next TTI is distributed based on modulation mode, if not the emission power of the next TTI is distributed based on the mapping relationship and modulation mode. Said device and receiver mainly includes: information resolving unit, judging unit and power control unit.
Description
Technical field
The present invention relates to the communication technology, method, device and the transceiver of control transmitting antenna power in particularly a kind of multi-input multi-output system.
Background technology
MIMO (Multi-Input Multi-Output, multiple-input and multiple-output) application of technology in wireless communication system more and more comes into one's own, no matter be that MIMO has its irreplaceable superiority from angle that increases power system capacity or the angle of improving systematic function.MIMO mainly is divided into two big classes, one class be with the maximization diversity gain be the space diversity reception to communicate of purpose, another kind of then is to be the space division multiplexing technology of purpose with maximum data speed, wherein, can be divided into following two kinds of structures based on the space division multiplexing technological model ground of MIMO:
1, single codeword SCW (Single Code Word) pattern
As shown in Figure 1, data flow to be sent at first through chnnel coding, interweave and operation such as planisphere mapping, launch (number that M is transmitting antenna) through different antennas respectively for the data flow of M road phase same rate along separate routes then.Difference according to the multi-access mode that system adopted, channel code or channel resources such as frequency or time that the data occupancy of this M transmitting antenna is identical, for example, to code division multiple access (CDMA) system, M transmitting antenna uses identical channel code, to OFDM (OFDMA) system, M transmitting antenna uses one group of identical subcarrier etc., among Fig. 1 channelizing handle promptly according to multi-access mode that system adopted with the signal of respective antenna carry out spread spectrum (to cdma system), subcarrier mapping (to the OFDMA system) waits processing accordingly.
2, many code words MCW (Multiple Code Word) pattern
As shown in Figure 2, data flow to be sent is the data flow of M road and M the corresponding different rates of transmitting antenna at first along separate routes, then respectively through chnnel coding independently, interweave and operation such as planisphere mapping, go out by corresponding transmission antennas transmit respectively at last.Similarly, difference according to the multi-access mode that system adopted, channel code or channel resources such as frequency or time that the data occupancy of this M transmitting antenna is identical, for example, to cdma system, M transmitting antenna uses identical channel code, and to the OFDMA system, M transmitting antenna uses one group of identical subcarrier etc.
Simultaneously, the MIMO technology combines with adaptive coding and modulating AMC technology again usually, wherein, adaptive coding modulation is meant that receiving terminal gives transmitting terminal with the feedback information of measuring such as channel quality, feedback informations such as the channel quality that transmitting terminal provides according to receiving terminal are selected modes such as suitable chnnel coding and modulation, typically as type of coding, code rate, modulation system (QPSK/16QAM etc.), improved the throughput of system so on the one hand, on the other hand since transmitting power in respective change ceaselessly, so also increased the interference between the different user on the transmitting antenna, i.e. the Flashlight effect.For when keeping this closed-loop control advantage, can also reduce the Flashlight effect, so will use the technology of some precodings, make user's transmitting power on each transmitting antenna, evenly distribute as far as possible.
Prior art has proposed the notion of virtual-antenna, receiving terminal is according to the definite antenna amount that can receive simultaneously of himself ability, this antenna amount is called virtual-antenna, receiving terminal returns virtual-antenna quantity to transmitting terminal, and transmitting terminal is redistributed the transmitting power of each physical antenna according to quantity, mapping relations and the modulation system of virtual-antenna.When the MCW pattern, receiving terminal also needs to feed back simultaneously the serial number information of virtual-antenna.Virtual-antenna can effectively reduce the Flashlight effect, reason is how many virtual-antenna numbers no matter receiving terminal feeds back is, transmitting terminal can both be by ordering matrix P and unitary transformation matrix U, guaranteeing that each symbol period all exists on each physical antenna transmits, and the energy that transmits is assigned on each transmitting antenna comparatively fifty-fifty, make that as far as possible each transmitting antenna has identical or close average power in the cycle at each TTI (Transmission Timing Interval).
Adopt the scheme of virtual-antenna to describe like this, suppose that there are Mt transmitting antenna and Mr reception antenna in certain system, so no matter what transmitting antennas the feedback prompting will adopt, by the mapping relations of virtual-antenna, can be so that the power on this Mt transmitting antenna comparatively be evenly distributed on each transmitting antenna and keeps gross power constant.Situation for the SCW mode transfer, transmitting terminal is directly according to the number assignment transmitting power of virtual-antenna, for the situation of MCW mode transfer, receiving terminal also needs to adopt which physical antenna to shine upon as the interface of virtual-antenna according to the virtual-antenna serial number information decision of feedback earlier.
To SCW, in the time of Me＜Mt, the introducing of virtual-antenna notion makes transmitting power distribute relatively equably on transmitting antenna really, reduced the Flashlight effect, Me is more little, improve obvious more, especially Me=1 the time, because the scheme of virtual-antenna is comparatively average being assigned on Mt the transmitting antenna of power, so can think and at this time eliminated the Flashlight effect.Investigate MCW and also can obtain essentially identical conclusion: in Me＜Mt, virtual-antenna has reduced the power variance between the transmitting antenna.
Adopt the method that virtual-antenna shines upon to realize distributing comparatively uniformly, the more little uniformity of Me is good more, but in the time of Me=Mt, continue to adopt the power division mode that virtual-antenna shines upon but between each transmitting antenna, to produce bigger power variance, cause the Flashlight effect more obvious on the contrary.
Summary of the invention
The invention provides method, device and the transceiver of control transmitting antenna power in a kind of multi-input multi-output system, to solve in the prior art when the Me=Mt, the power division mode that adopts virtual-antenna to shine upon can produce more high-power variance between each transmitting antenna, cause the tangible problem of Flashlight effect.
The technology of the present invention design is achieved through the following technical solutions:
The method of control transmitting antenna power comprises the steps: in a kind of multi-input multi-output system
A, receiving terminal are determined the needed virtual-antenna quantity of current Transmission Time Interval TTI, and this virtual-antenna quantity is fed back to transmitting terminal;
B, transmitting terminal judge whether described virtual-antenna quantity equals local terminal actual transmission antenna amount, if then directly distribute the transmitting power of each antenna, otherwise distribute the transmitting power of each antenna at next TTI according to the mapping relations and the modulation system of virtual-antenna at next TTI according to modulation system.
Described virtual-antenna quantity is the number of transmission antennas that receiving terminal can accurately receive.
When adopting single codeword SCW transmission mode, among the described step B, transmitting terminal selects the antenna of respective numbers to carry out the virtual-antenna mapping in local terminal actual transmission antenna at random.
When adopting many code words MCW transmission mode: in the described steps A, transmitting terminal feeds back the serial number information of virtual-antenna simultaneously; And among the described step B, transmitting terminal selects the actual antennas of described serial number information correspondence to carry out the virtual-antenna mapping.
Among the described step B, carrying out virtual-antenna when mapping, determining transmit signal power on each antenna according to discrete Fourier DFT conversion and modulation system.
Also comprise the step that the phase place that transmits on each antenna is adjusted among the described step B.
The device of control transmitting antenna power in a kind of multi-input multi-output system comprises:
The information analysis unit is used for parsing and the relevant feedback information of transmitting antenna power control from the information that receives, and comprises virtual-antenna quantity in this feedback information;
Judging unit connects described information analysis unit, is used to judge whether described virtual-antenna quantity equals local terminal actual transmission antenna amount and export control signal corresponding;
Power control unit, connect described judging unit and antenna respectively, be used for distributing the transmitting power of the next Transmission Time Interval TTI of transmitting antenna according to described control signal, wherein, if judged result is to be then directly to distribute the transmitting power of each antenna at next TTI according to modulation system, otherwise distributes the transmitting power of each antenna at next TTI according to the mapping relations and the modulation system of virtual-antenna.
Transceiver in a kind of multi-input multi-output system comprises at least two antennas that are used to receive and send messages, and this transceiver also comprises:
The information analysis unit connects described antenna, is used for parsing and the relevant feedback information of transmitting antenna power control from the information that receives, and comprises virtual-antenna quantity in this feedback information;
Judging unit connects described information analysis unit, is used to judge whether described virtual-antenna quantity equals local terminal actual transmission antenna amount and export control signal corresponding;
Power control unit, connect described judging unit, be used for distributing the transmitting power of the next Transmission Time Interval TTI of transmitting antenna according to described control signal, wherein, if judged result is to be then directly to distribute the transmitting power of each antenna at next TTI according to modulation system, otherwise distributes the transmitting power of each antenna at next TTI according to the mapping relations and the modulation system of virtual-antenna.
Described information analysis unit parses the serial number information of the antenna that can receive simultaneously and exports to the distribution that power control unit is used for transmitting power from described feedback information.
Beneficial effect of the present invention is as follows:
Technical scheme of the present invention is when Me=Mt, transmitting terminal directly distributes the transmitting power of each antenna at next TTI according to modulation system, thereby eliminated the more high-power variance that adopts power division mode that virtual-antenna shines upon between each transmitting antenna, to produce, reduced the Flashlight effect.
Description of drawings
Fig. 1 is a single codeword pattern MIMO structure;
Many patterns of code words of Fig. 2 MIMO structure;
Fig. 3, Fig. 4 are QPSK modulation system schematic diagram;
Fig. 5, Fig. 6 are 16QAM modulation system schematic diagram;
When Fig. 7 is the SCW pattern, the antenna power variance ratio before and after the employing virtual-antenna of emulation under the modulation system of 16QAM, wherein: Me=Mt=4;
When Fig. 8 is the MCW pattern, the antenna power variance ratio before and after the employing virtual-antenna of emulation under the modulation system of 16QAM, wherein: Me=Mt=4
Fig. 9 is the schematic flow sheet of the embodiment of the invention one described method;
Figure 10 is the structural representation of the embodiment of the invention two described output control devices;
Figure 11 is the embodiment of the invention three described transceiver architecture schematic diagrames that have output control device;
Figure 12 be before and after the employing virtual-antenna of SCW mode simulation the antenna power variance ratio, wherein: Mt=4, Me=1,2,3;
Figure 13 be before and after the employing virtual-antenna of MCW mode simulation the antenna power variance ratio, wherein: Mt=4, Me=1,2,3.
Embodiment
In the prior art, in the time of Me=Mt, continue to adopt the power division mode that virtual-antenna shines upon but between each transmitting antenna, to produce bigger power variance, cause the Flashlight effect more obvious on the contrary.Trace it to its cause and be that the method that adopts virtual-antenna to shine upon can only realize distributing comparatively uniformly, and Me is more little, counterbalance effect between the transmitting power of distributing on each antenna is good more, otherwise Me is big more, then counterbalance effect is not obvious more, special in the time of Me=Mt, the transmitting power that each transmitting antenna is described has reached comparatively ideal equilibrium, if the power division mode that also adopts virtual-antenna to shine upon, because the introducing of DFT matrix, destroy the equilibrium that has formed on the contrary and distributed, caused the Flashlight effect more obvious.
When for example modulation system was QPSK among the SCW, as shown in Figure 3 and Figure 4, the effect of modulation was that bit stream is converted into symbols streams, and transmitting antenna distributes corresponding power to launch according to the real part of modulation back symbol and the value of imaginary part, S1 and S among Fig. 3
0For the bit before modulating is represented m
I(i) and m
Q(i)) be respectively the real part and the imaginary part of modulation back symbol, D=1/ wherein, Fig. 4 be the position of each symbol in complex coordinates system, is not difficult to find out, the amplitude of each symbol is all consistent among the QPSK, i.e. power unanimity, so do not need to redistribute according to virtual-antenna again.
The modulation system of 16QAM is seen Fig. 5 and Fig. 6, S among Fig. 5
3, S
2, S
1And S
0For the bit before modulating is represented m
I(i) and m
Q(i)) be respectively the real part and the imaginary part of modulating the back symbol, wherein
Fig. 6 is the position of each symbol in complex coordinates system, as can be seen, the amplitude of each symbol and inconsistent among the 16QAM, promptly power is inconsistent, can be divided three classes: 0111,1111,0101 and 1101 power is 18A
2, 0010,1010,0000 and 1000 power is 2A
2, other are 10A
2But find by emulation, in Me=Mt, do not need to use virtual-antenna equally, the emulated data of the 16QAM modulation system of Me=Mt such as Fig. 7, shown in Figure 8, Fig. 7 is the simulation result of SCW pattern, Fig. 8 is the simulation result of MCW pattern, can know and see, works as Me=Mt, if continue to adopt virtual-antenna to redistribute transmitting power on each antenna in the modulation system of 16QAM, it is big that the power variance can become equally.
Given this, the present invention is equivalent to physical antenna with virtual-antenna when Me=Mt, directly distribute the transmitting power of each antenna at next TTI according to modulation system, the method that no longer adopts virtual-antenna to shine upon, thus kept the balanced distribution state that formed; When Me＜Mt, the power division mode that adopts virtual-antenna to shine upon tends to balance the transmitting power of each antenna.
Below with specific embodiment and be described with reference to the accompanying drawings technical scheme of the present invention:
Embodiment one
As shown in Figure 9, the method for control transmitting antenna power comprises the steps: in a kind of multi-input multi-output system of the present invention
S101, receiving terminal are determined the feedback information of current TTI;
Comprise virtual-antenna quantity in the feedback information, receiving terminal is according to current receiving ability, and the antenna amount that can correctly receive is as virtual-antenna quantity, if the MCW transmission mode, also comprises the serial number information of the antenna that can correctly receive in the feedback information.
S102, receiving terminal send to transmitting terminal with feedback information;
Receiving terminal sends to transmitting terminal by feedback channel with feedback information.
S103, transmitting terminal receive and resolve feedback information;
After transmitting terminal receives feedback information, therefrom parse the virtual-antenna quantity of carrying, perhaps also comprise the serial number information of the antenna that can correctly receive.
S104, transmitting terminal judge whether virtual-antenna quantity equals actual antennas quantity, if execution in step S105; Otherwise execution in step S106;
S105, transmitting terminal distribute the transmitting power of each transmitting antenna at next TTI according to the mapping relations and the modulation system of virtual-antenna;
Here, suppose that feedback needs Me effectively during antenna (also being virtual-antenna), distributes the method for each transmitting antenna power specifically to comprise according to the mapping relations of virtual-antenna:
Transmitting terminal: suppose that H (t) is M
r* M
tMimo channel, make x (t) for also being the M that launches on the virtual-antenna at Me
e* 1 emission signal vector, the emission vector representation after the virtual-antenna mapping is a formula 1 so:
Here
Be a M
t* M
tUnitary matrice, it satisfy each row mould square and the constant for equating, guarantee that the transmit signal energy on each antenna reaches unanimity, and guarantee that by selectivity constant total emission power is constant; Make that I is M
t* M
tThe unit matrix matrix, P is Me row wherein, expression is chosen Me from Mt virtual-antenna, corresponding row number are the virtual-antenna port numbers, if SCW transmission mode, picked at random Me wherein is listed as the interface as a current Me virtual-antenna, if the MCW transmission mode is chosen specific Me according to the antenna serial number information of feedback and is listed as current virtual-antenna interface.
U is one group of matrix that satisfies formula 2:
U＝Δ·W (2)
Wherein:
Be diagonal matrix, θ
i, i=1...M
t, be random phase, be used to adjust the phase place of each transmitting antenna, W is M
t* M
tDiscrete Fourier transform (DFT) DFT matrix, emission signal vector x (t) is decomposed into the comparatively average t of an energy discrete signal vector by discrete Fourier transform (DFT), launches on Mt antenna respectively then.
Receiving terminal: received signal can be expressed as formula 3:
Here
Like this, receiving terminal utilizes formula 3 to merge processing after receiving respectively by Mr antenna, and mimo system is converted into M effectively
r* M
eSystem.
S106, transmitting terminal directly distribute the transmitting power of each antenna at next TTI according to modulation system.
When Me=Mt, the present invention has kept the representation of said method, still adopt the notion of virtual-antenna, but in the choosing of W, add a new option, i.e. unit matrix I, in the practical application of system, transmitting terminal is according to the feedback and the scheduling of resource situation of receiving terminal, and effective number of antennas Me that decision will be adopted chooses W according to formula 4:
Perhaps also can adopt similar way, choose U according to formula 5:
This is because the Δ matrix is to the angular phasing spin matrix, does not influence the amplitude of each element of U matrix so only influence phase place, does not therefore influence the distribute power of each antenna, but has directly adopted the power modulation result of signal.
By above-mentioned optimization, in Me=Mt, also can guarantee very little Flashlight.
Embodiment two
As shown in figure 10, for realizing embodiment one described method, the present invention also provides the device of control transmitting antenna power in a kind of multi-input multi-output system, comprising:
The information analysis unit is used for parsing and the relevant feedback information of transmitting antenna power control from the information that receives, and comprises virtual-antenna quantity in this feedback information;
Judging unit connects described information analysis unit, is used to judge whether described virtual-antenna quantity equals local terminal actual transmission antenna amount and export control signal corresponding;
Power control unit, connect described judging unit, be used for distributing the transmitting power of the next Transmission Time Interval TTI of transmitting antenna according to described control signal, wherein, directly distribute the transmitting power of each antenna if described virtual-antenna quantity equals local terminal actual transmission antenna amount according to modulation system, otherwise distribute the transmitting power of each transmitting antenna at next TTI according to the mapping relations and the modulation system of virtual-antenna at next TTI.
When the MCW transmission mode, described information analysis unit parses the serial number information of the antenna that can receive simultaneously and exports to the distribution that power control unit is used for transmitting power from described feedback information.
In the power control unit, the concrete distribution method of each antenna transmitting power repeats no more here as described in the embodiment one.
Embodiment three
As shown in figure 11, the transceiver in a kind of multi-input multi-output system of Application Example two described devices comprises:
At least two antennas are used to receive and send messages;
The information analysis unit connects described antenna, is used for parsing and the relevant feedback information of transmitting antenna power control from the information that receives, and comprises virtual-antenna quantity in this feedback information;
Judging unit connects described information analysis unit, is used to judge whether described virtual-antenna quantity equals local terminal actual transmission antenna amount and export control signal corresponding;
Power control unit, connect described judging unit, be used for distributing the transmitting power of the next Transmission Time Interval TTI of transmitting antenna according to described control signal, wherein, directly distribute the transmitting power of each antenna if described virtual-antenna quantity equals local terminal actual transmission antenna amount according to modulation system, otherwise distribute the transmitting power of each transmitting antenna at next TTI according to the mapping relations and the modulation system of virtual-antenna at next TTI.
When the MCW transmission mode, described information analysis unit parses the serial number information of the antenna that can receive simultaneously and exports to the distribution that power control unit is used for transmitting power from described feedback information.
In the power control unit, the concrete distribution method of each antenna transmitting power repeats no more here as described in the embodiment one.
Can further utilize emulated data to carry out the effect explanation, with Mt=4 transmitting antenna is example, Figure 12 shows that the emulation that the SCW pattern is carried out, the emulation of Figure 13 for the MCW pattern is carried out, purpose of design according to virtual-antenna, adopt in each TTI the variance between each antenna average power as the sign amount, as the jaggies among Figure 12 and Figure 13, SCW is adopted the 16-QAM modulation, MCW is adopted 16-QAM and two kinds of modulation of QPSK and guarantees two kinds of modulation systems, in Me＜Mt, consult Figure 12 and Figure 13, adopt virtual-antenna can reduce the power variance effectively, so prior art have and very significantly eliminate effect to the Flashlight effect.During Me=Mt, the simulated effect of 16-QAM modulation system is still referring to Fig. 7 and Fig. 8.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1, the method for control transmitting antenna power in a kind of multi-input multi-output system is characterized in that, comprises the steps:
A, receiving terminal are determined the needed virtual-antenna quantity of current Transmission Time Interval TTI, and this virtual-antenna quantity is fed back to transmitting terminal;
B, transmitting terminal judge whether described virtual-antenna quantity equals local terminal actual transmission antenna amount, if then directly distribute the transmitting power of each antenna, otherwise distribute the transmitting power of each antenna at next TTI according to the mapping relations and the modulation system of virtual-antenna at next TTI according to modulation system.
2, the method for claim 1 is characterized in that, described virtual-antenna quantity is the number of transmission antennas that receiving terminal can accurately receive.
3, method as claimed in claim 2 is characterized in that, when adopting single codeword SCW transmission mode, among the described step B, transmitting terminal selects the antenna of respective numbers to carry out the virtual-antenna mapping in local terminal actual transmission antenna at random.
4, method as claimed in claim 2 is characterized in that, when adopting many code words MCW transmission mode:
In the described steps A, transmitting terminal feeds back the serial number information of virtual-antenna simultaneously; And
Among the described step B, transmitting terminal selects the actual antennas of described serial number information correspondence to carry out the virtual-antenna mapping.
5, as claim 3 or 4 described methods, it is characterized in that, among the described step B, carrying out virtual-antenna when mapping, determine transmit signal power on each antenna according to discrete Fourier DFT conversion and modulation system.
6, method as claimed in claim 5 is characterized in that, also comprises the step that the phase place that transmits on each antenna is adjusted among the described step B.
7, the device of control transmitting antenna power in a kind of multi-input multi-output system is characterized in that, comprising:
The information analysis unit is used for parsing and the relevant feedback information of transmitting antenna power control from the information that receives, and comprises virtual-antenna quantity in this feedback information;
Judging unit connects described information analysis unit, is used to judge whether described virtual-antenna quantity equals local terminal actual transmission antenna amount and export control signal corresponding;
Power control unit, connect described judging unit and antenna respectively, be used for distributing the transmitting power of the next Transmission Time Interval TTI of transmitting antenna according to described control signal, wherein, if judged result is to be then directly to distribute the transmitting power of each antenna at next TTI according to modulation system, otherwise distributes the transmitting power of each antenna at next TTI according to the mapping relations and the modulation system of virtual-antenna.
8, device as claimed in claim 7 is characterized in that, described information analysis unit parses the serial number information of the antenna that can receive simultaneously and exports to the distribution that power control unit is used for transmitting power from described feedback information.
9, the transceiver in a kind of multi-input multi-output system comprises at least two antennas that are used to receive and send messages, and it is characterized in that this transceiver also comprises:
The information analysis unit connects described antenna, is used for parsing and the relevant feedback information of transmitting antenna power control from the information that receives, and comprises virtual-antenna quantity in this feedback information;
Judging unit connects described information analysis unit, is used to judge whether described virtual-antenna quantity equals local terminal actual transmission antenna amount and export control signal corresponding;
Power control unit, connect described judging unit, be used for distributing the transmitting power of the next Transmission Time Interval TTI of transmitting antenna according to described control signal, wherein, if judged result is to be then directly to distribute the transmitting power of each antenna at next TTI according to modulation system, otherwise distributes the transmitting power of each antenna at next TTI according to the mapping relations and the modulation system of virtual-antenna.
10, device as claimed in claim 9 is characterized in that, described information analysis unit parses the serial number information of the antenna that can receive simultaneously and exports to the distribution that power control unit is used for transmitting power from described feedback information.
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| CN 200610064989 CN101043242A (en) | 2006-03-20 | 2006-03-20 | Method, apparatus and transceiver for controlling transmitting antenna power |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989873A (en) * | 2009-08-07 | 2011-03-23 | 大唐移动通信设备有限公司 | Method and device for transmitting uplink control channel |
| US8605811B2 (en) | 2009-08-28 | 2013-12-10 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for data signal transmission in multi-antenna system |
| CN104170478A (en) * | 2013-03-20 | 2014-11-26 | 华为技术有限公司 | Method, device and system for transmitting data in hybrid network |
| CN109792318A (en) * | 2016-10-07 | 2019-05-21 | 高通股份有限公司 | Adaptive code word and code block selection in wireless communication |
| CN117706467A (en) * | 2024-02-02 | 2024-03-15 | 中国航天科工集团八五一一研究所 | Interferometer array method |
-
2006
- 2006-03-20 CN CN 200610064989 patent/CN101043242A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989873A (en) * | 2009-08-07 | 2011-03-23 | 大唐移动通信设备有限公司 | Method and device for transmitting uplink control channel |
| CN101989873B (en) * | 2009-08-07 | 2014-03-19 | 电信科学技术研究院 | Method and device for transmitting uplink control channel |
| US9148209B2 (en) | 2009-08-07 | 2015-09-29 | China Academy Of Telecommunications Technology | Transmission method and device for uplink control channel |
| US8605811B2 (en) | 2009-08-28 | 2013-12-10 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for data signal transmission in multi-antenna system |
| CN104170478A (en) * | 2013-03-20 | 2014-11-26 | 华为技术有限公司 | Method, device and system for transmitting data in hybrid network |
| CN109792318A (en) * | 2016-10-07 | 2019-05-21 | 高通股份有限公司 | Adaptive code word and code block selection in wireless communication |
| CN109792318B (en) * | 2016-10-07 | 2022-04-12 | 高通股份有限公司 | Adaptive codeword and code block selection in wireless communications |
| CN117706467A (en) * | 2024-02-02 | 2024-03-15 | 中国航天科工集团八五一一研究所 | Interferometer array method |
| CN117706467B (en) * | 2024-02-02 | 2024-05-17 | 中国航天科工集团八五一一研究所 | Interferometer array method |
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