KR101754104B1 - Method And Apparatus For Transmitting Data Signal Using Multi Antenna - Google Patents
Method And Apparatus For Transmitting Data Signal Using Multi Antenna Download PDFInfo
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- KR101754104B1 KR101754104B1 KR1020100125998A KR20100125998A KR101754104B1 KR 101754104 B1 KR101754104 B1 KR 101754104B1 KR 1020100125998 A KR1020100125998 A KR 1020100125998A KR 20100125998 A KR20100125998 A KR 20100125998A KR 101754104 B1 KR101754104 B1 KR 101754104B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/007—Unequal error protection
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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
- H04B7/022—Site diversity; Macro-diversity
- H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
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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
- H04B7/0426—Power distribution
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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
- H04B7/06—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
- H04B7/0667—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 delayed versions of same signal
- H04B7/0669—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 delayed versions of same signal using different channel coding between antennas
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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
- H04B7/06—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
- H04B7/0667—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 delayed versions of same signal
- H04B7/0671—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 delayed versions of same signal using different delays between antennas
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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
- H04B7/06—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
- H04B7/068—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 using space frequency diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0675—Space-time coding characterised by the signaling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/20—Arrangements for broadcast or distribution of identical information via plural systems
- H04H20/22—Arrangements for broadcast of identical information via plural broadcast systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0606—Space-frequency coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0637—Properties of the code
- H04L1/0643—Properties of the code block codes
Abstract
A method and apparatus for transmitting a data signal using multiple antennas, the method comprising: performing a diversity process on a coded and modulated first data signal, performing a diversity process on the coded and modulated second data signal, Combining the diversity-processed first data signal and the diversity-processed second data signal, and transmitting the combined first and second data signals using multiple antennas And diversity processing is performed in such a manner that the first data signal and the second data signal are assigned to the respective antennas of the multiple antennas to have diversity. According to the present invention, the transmission efficiency of the main data is increased, Accordingly, the transmission speed and capacity of the additional data can be improved.
Description
BACKGROUND OF THE
In the case of transmitting broadcast data or the like, a method of transmitting additional data together with main data is considered.
The additional data insertion method currently being considered is a method of transmitting data using a single antenna.
More specifically, in a broadcast system and / or a communication system, additional data having a long code of high autocorrelation and low power is inserted into main data and transmitted. In this case, the performance of the system is deteriorated, and the coverage of broadcast and communication is reduced.
It is an object of the present invention to provide a method for effectively transmitting main data and additional data.
An object of the present invention is to provide a method of increasing the transmission efficiency of main data by applying a diversity technique and thereby improving the transmission rate and capacity of additional data.
It is an object of the present invention to provide a method for stably transmitting additional data together with main data.
One aspect of the present invention is a method of transmitting data signals using multiple antennas, the method comprising: performing a diversity process on a coded and modulated first data signal; performing a diversity process on a coded and modulated second data signal; Combining the diversity-processed first data signal and the diversity-processed second data signal, and transmitting the combined first and second data signals using multiple antennas, the diversity processing comprising: The first data signal and the second data signal are allocated to the respective antennas of the multiple antennas so as to have diversity.
At this time, the transmission power of the second data signal can be increased according to the diversity gain of the first data signal.
Further, the code length of the second data signal can be reduced according to the increase of the transmission power.
The transmission power of the second data signal may be increased according to the QoS of the transmission channel.
The second data signal may be a plurality of different sub data signals and the plurality of different sub data signals may be allocated to each antenna of the multiple antennas through diversity processing for the second data signal. At this time, at least one of the plurality of different sub data signals may be allocated to each antenna of the multiple antennas. Also, the number of different sub data signals may increase according to the diversity gain of the first data signal. In addition, the transmission power may be set differently for different sub data signals.
The present data signal transmission method may further include receiving feedback on a transmission channel state in which transmission of the first data signal and the second data signal is performed, and based on the feedback, Only a second data signal allocated to an antenna having a good channel state may be combined with the corresponding first data signal among the first data signals diversity-processed.
The diversity applied to the transmission of the first data signal and the second data signal may be a space-time block coding (STBC), a delay diversity (DD), a cyclic delay diversity ), Space-frequency block coding (SFBC), spatial multiplexing, cooperative transmission between macro base stations, cooperative transmission between macro base stations and micro base stations, and cooperative transmission between transmitters.
According to another aspect of the present invention, there is provided an apparatus for transmitting data signals using multiple antennas, including a first diversity processing unit for performing diversity processing on a first data signal that is coded and modulated, a diversity processing unit for performing diversity processing on a coded and modulated second data signal, A plurality of signal combining units for combining the signals transmitted from the first diversity processing unit and the second diversity processing unit, and an antenna for receiving signals from the signal combining unit and configuring a multi-antenna system And diversity processing is performed so that the first data signal and the second data signal are allocated to the respective antennas of the multiple antennas so as to have diversity, and a plurality of signal synthesizers And a plurality of transmitting and receiving units are connected to each antenna constituting the multi-antenna system in a one-to- The.
Here, the transmission output of the second data signal may increase according to the diversity gain of the first data signal.
In this case, the second data signal may be a plurality of different sub data signals, and the second diversity processing unit may perform diversity processing for different sub data signals.
Here, the transmitting / receiving unit may receive feedback information on the transmission channel state in which the first data signal and the second data signal are transmitted, and the signal combining unit may receive feedback information from the diversity- Only the second data signal allocated to the antenna having a good channel state can be combined with the corresponding first data signal among the first data signals diversity processed and transmitted to the transmission / reception unit corresponding to the antenna having a good channel state.
According to the present invention, it is possible to effectively transmit main data and additional data.
According to the present invention, it is possible to increase the transmission efficiency of the main data by applying the diversity technique, thereby improving the transmission speed and capacity of the additional data.
According to the present invention, additional data can be stably transmitted together with main data.
1 schematically illustrates combining additional data in a main data frame to transmit main data and additional data together.
2 is a diagram schematically illustrating transmission of data using multiple antennas in a transmitter.
3 is a view schematically illustrating a case where each transmitter of the broadcasting system performs a cooperative transmission to obtain a diversity gain.
4 is a diagram schematically illustrating a case where a macro base station and a micro base station in a cell of a macro base station perform a cooperative transmission to obtain a diversity gain.
FIG. 5 is a graph illustrating a bit error rate (BER) when STBC is applied to a single antenna.
6 is a block diagram schematically illustrating an example of a data signal transmission apparatus or transmission system to which the present invention is applied.
7 is a diagram schematically illustrating a method of inserting an additional data signal in a frame in which a main data signal is transmitted according to the present invention.
8 is a diagram schematically illustrating another method of inserting an additional data signal into a frame in which a main data signal is transmitted in a system to which the present invention is applied.
9 is a diagram schematically illustrating another method of inserting an additional data signal into a frame in which a main data signal is transmitted in a system to which the present invention is applied.
10 is a flowchart schematically illustrating a method of transmitting a data signal in a transmission system to which the present invention is applied.
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present disclosure rather unclear.
In describing the components of the present specification, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, May be "connected "," coupled ", or "connected. &Quot;
In addition, the description of "including" a specific configuration in the present invention does not exclude a configuration other than the configuration, and means that additional configurations can be included in the practice of the present invention or the technical scope of the present invention. 1 schematically illustrates combining additional data in a main data frame to transmit main data and additional data together.
Additional data such as a transmission ID and a disaster broadcast are additional data for the main data. As shown in Fig. 1, the
The additional data is transmitted at a low transmission power P with a long code length of a length L as a low-speed, low-capacity data. At this time, the additional data is added to the main data, and when detecting the main data at the receiving end, it can act as an interference to the main data. Therefore, the main data detection performance at the receiving end is lowered.
Therefore, if a margin of sufficient performance is ensured when detecting the main data at the receiving end, the additional data can be efficiently used without interfering with the detection of the main data.
The present invention provides a method for transmitting supplementary data in a stable and high-speed manner by providing sufficient diversity gain or performance margin to main data using various types of diversity techniques.
In the present invention, space-time block coding (STBC), delay diversity (DD), cyclic delay diversity (CDD), space-frequency block coding SFBC), and the like can be used. In the present specification, the diversity technique includes various methods for improving data transmission performance using two or more antennas such as spatial multiplexing, cooperative transmission between macro base stations, cooperative transmission between macro base stations and micro base stations, and cooperative transmission using two or more transmitters Concept.
Also, the term " multiple antennas " as used herein includes two or more base stations or a plurality of base stations in the case of cooperative transmission using two or more transmitters. For example, in the case of cooperative transmission between macro base stations, each macro base station may have multiple antennas, or in the case of cooperative transmission between a macro base station and a micro base station, multiple antennas may be composed of a macro base station and a micro base station.
2 is a diagram schematically illustrating transmission of data using multiple antennas in a transmitter.
The signal passed through the serial to parallel (S / P)
Before transmitting a signal to the multiple antennas, the diversity
3 is a view schematically illustrating a case where each transmitter of the broadcasting system performs a cooperative transmission to obtain a diversity gain. Each transmitter performs specific diversity coding with respect to each other so that the receiver can obtain the diversity gain in the overlapped portion of the two transmitters. Although a plurality of transmitters are used here, the present invention is not limited to this, and the present invention can also be applied to a case where a plurality of base stations is referred to as a cooperative transmission.
4 is a diagram schematically illustrating a case where a macro base station and a micro base station in a cell of a macro base station perform a cooperative transmission to obtain a diversity gain. The transmission of the macro base station is performed with high power. The transmission of the micro base station is performed with low power. The macro base station and the micro base station may perform diversity coding in pairs so that the receiving terminals obtain diversity gain.
In this manner, when the diversity scheme is applied in various forms, the diversity gain can be obtained so that the detection performance of the received signal is greatly increased.
FIG. 5 is a graph illustrating a bit error rate (BER) when STBC is applied to a single antenna.
As shown in the figure, when the space time block coding is applied, the transmission performance is significantly improved as compared with the case where data is transmitted using a single antenna without applying space time block coding.
For example, it can be confirmed that the performance is improved by about 10 dB or more at BER = 10 -3 . This is an example of a performance margin related to the main data signal transmission referred to herein. The space time block coding shown in FIG. 5 is an example of a case where a diversity technique is applied, and transmission performance is improved similarly when another diversity technique is applied.
As described above, diversity techniques using multiple antennas can be applied to perform more stable and high-speed data transmission. That is, if the transmission performance of the main data is improved by applying the diversity technique, the margin of the transmission performance can be utilized for effective transmission of the additional data.
6 is a block diagram schematically illustrating an example of a data signal transmission apparatus or transmission system to which the present invention is applied.
The first coding /
The second coding /
The first
The diversity-coded main data signal and the additional data signal are transmitted to the
The main data signal and the additional data signal transmitted from the
Hereinafter, a method for improving transmission performance of an additional data signal to be transmitted together with a main data signal with improved transmission performance by applying diversity technology will be described in detail with reference to the drawings.
≪ Transmission power control of additional data signal - Improvement of additional data detection performance >
The transmission power of the additional data can be increased in consideration of the improvement of transmission performance of the main data signal.
When the additional data signal is inserted and transmitted in the frame of the main data signal, the transmission power of the additional data signal can be improved and inserted. Therefore, in order to prevent interference with the main data signal, it is possible to allocate to the additional data signal the transmission power necessary for sufficiently securing the transmission performance of the additional data signal, without inserting the additional data signal into the main data signal at low power .
The transmission of the main data signal to which the diversity technique is applied is improved in performance as shown in FIG. 5, so that the performance margin is obtained as much as that. Therefore, as described above, it is possible to apply a power as high as the improved performance to the additional data signal by applying the diversity technique.
In the case of the additional data signal to which the high power is applied, since the detection performance at the receiving end is improved, more stable transmission and reception is possible.
It is possible to insert the additional data signal into the frame of the main data signal with high power or to transmit it together with the main data signal, so that a high degree of autocorrelation can be realized. Therefore, the code length of the additional data signal can be set short. Accordingly, since more additional data codes can be transmitted and transmitted in the transmission frame of the system, high-speed data communication becomes possible.
7 is a diagram schematically illustrating a method of inserting additional data signals 710-1 to 710-N into frames 720-1 to 720-N to which a main data signal is transmitted according to the present invention.
The length L of the additional data signal and the transmission power P can be variously adjusted according to the QoS (Quality of Service) of the transmission system to which the present invention is applied.
The transmission power P of the additional data signal may be increased in accordance with the diversity gain obtained by the main data signal. When a main data signal and an additional data signal are transmitted using a single antenna, when a transmission power applied to the additional data signal is p, a weight? Is added to the additional data signal transmitted according to the present invention the transmission power of? p can be applied. At this time, as the diversity gain acquired by the main data signal increases, the weighting factor? Applied to the transmission power of the additional data signal may be increased to improve the transmission performance of the additional data signal.
The number of codes of the additional data signal can be increased according to the diversity gain obtained by the main data signal. As the diversity gain obtained by the main data signal increases, the higher transmission power can be applied to the additional data signal as described above, so that the code length of the additional data signal can be reduced and more codes can be transmitted. Therefore, the transmission rate can be increased through the additional data signal.
≪ Transmitting different data signals for different antennas - securing high data rate >
Since the main data signal and the additional data signal are transmitted together on the same transmission frame, the diversity gain obtained by the additional data signal can be increased as the diversity gain obtained by the main data signal increases.
Depending on the amount of performance margin obtained through the diversity gain, different additional data can be transmitted using multiple antennas. For example, in accordance with the amount of performance margin obtained through the diversity gain, a certain additional data signal is transmitted as a part of some transmission antennas (including a case of configuring a multi-antenna system with a plurality of base stations or a plurality of transmitters) It is possible to consider a case of inserting and transmitting another specific additional data signal in a frame of the main data signal transmitted to the corresponding antenna and transmitting another specific additional data signal in a frame of the main data signal transmitted to the other antenna .
In addition, different additional data signals for respective transmission antennas (including a case of configuring a multi-antenna system with a plurality of base stations or a plurality of transmitters) constituting multiple antennas are inserted into a frame in which a main data signal is transmitted and transmitted Can be considered.
At this time, the transmission power applied to the additional data signal may be low power or high power as described above.
With this method, the transmission rate of the additional data signal can be secured by a multiple of each antenna or transmitter. Therefore, high-speed additional data transmission is possible.
According to this method, additional data signals can be allocated to specific antennas, transmitters, or base stations without transmitting additional data signals through all transmission antennas. Therefore, it is possible not only to obtain the high data rate of the additional data, but also to satisfy the QoS of the transmission system.
8 is a diagram schematically illustrating a method of inserting additional data signals 810-1 to 810-N into frames 820-1 to 820-N in which a main data signal is transmitted in a system to which the present invention is applied . Each of the additional data signals or some additional data signals inserted into the frames k 820-1 to 820-N to which the main data signal is transmitted is different from each other.
Also in this case, the transmission power and the code length of the additional data are variously adjusted according to the diversity gain and the QoS to be obtained through the transmission system.
<Selection of transmission channel for feedback information - Stability of transmission / reception>
It is also possible to allocate and transmit additional data to an antenna, a base station, or a transmitter corresponding to a transmission channel having a good channel state, based on the transmission channel information transmitted through the feedback channel from the receiving end.
Information of an antenna or a transmitter or a base station corresponding to a high-quality transmission channel can be received from the receiving end through a feedback channel. Therefore, in the transmitting terminal, additional data can be transmitted only through an antenna or a transmitter or a base station having a good channel state. Therefore, stable transmission and reception can be performed, and the influence on the main data signal can be minimized.
9 is a diagram schematically illustrating a method of inserting an additional data signal in a frame in which a main data signal is transmitted in a system to which the present invention is applied.
Here, the case where it is determined that the quality of the i-th transport channel and the j-th transport channel satisfies the quality required by the system according to the channel state information transmitted from the receiving
910-i, and 910-j are added to the frames 920-i and 920-j of the main data signal to be transmitted to the antennas corresponding to the i-th transport channel and the j-th transport channel, -j) can be inserted and transmitted.
10 is a flowchart schematically illustrating a method of transmitting a data signal in a transmission system to which the present invention is applied.
The transmitting end acquires the main data signal and the sub data signal to be transmitted (S1010). At this time, the sub data signal is additional data such as T x ID, disaster broadcast data to be transmitted together with the main data signal.
And performs coding and modulation on the obtained main data signal and sub data signal (S1020). The main data signal and the sub data signal can be performed in various ways depending on the characteristics and structure of the transmission / reception system.
The main data signal and the sub data signal are diversity-coded (S1030). Refers to a process required to allow diversity gain to be obtained in a transmitted signal, such as assigning a diversity data signal to multiple antennas and performing pre-coding.
The main data signal and the sub data signal, which are diversity-coded, are synthesized (S1040). Here, combining the main data signal and the sub data signal refers to a process of processing the main data signal and / or the sub data signal so that the main data signal and the sub data signal can be transmitted together with the main data signal. For example, the sub data signal may be inserted into the frame in which the main data signal is transmitted.
The synthesized main data signal and sub data signal are transmitted through multiple antennas (S1050). At this time, the main data signal transmitted through the multiple antennas can obtain various diversity gains according to the applied diversity technique.
Since the sub data signal is transmitted together with the main data signal, the diversity gain can be obtained similarly to the main data signal.
As described above, different sub data signals can be obtained in the data signal acquiring step (S1010) so that different signals can be transmitted according to the transmission antennas, as described above.
Also, the sub data signal can adjust the transmission power, the code length, and the like through the coding / modulation processing step S1020, the diversity coding step S1030 and / or the data signal combining step S1040.
In the above-described exemplary system, the methods are described on the basis of a flowchart as a series of steps or blocks, but the present invention is not limited to the order of the steps, and some steps may occur in different orders . It will also be understood by those skilled in the art that the steps shown in the flowchart are not exclusive and that other steps may be included or that one or more steps in the flowchart may be deleted without affecting the scope of the invention.
The above-described embodiments include examples of various aspects. While it is not possible to describe every possible combination for expressing various aspects, one of ordinary skill in the art will recognize that other combinations are possible. Accordingly, it is intended that the invention include all alternatives, modifications and variations that fall within the scope of the following claims.
Claims (14)
Performing a diversity process on the coded and modulated second data signal;
Combining the diversity-processed first data signal and the diversity-processed second data signal; And
And transmitting the combined first and second data signals using multiple antennas,
Wherein the diversity processing is performed so that the first data signal and the second data signal are allocated to the respective antennas of the multiple antennas and have diversity,
Wherein the transmit power of the second data signal increases as the diversity gain of the first data signal increases.
Wherein the plurality of different sub-data signals are allocated to respective antennas of the multiple antennas through diversity processing for the second data signal.
Further comprising receiving feedback on a transmission channel state in which transmission of the first data signal and the second data signal occurs,
Only the second data signal allocated to the antenna having the good channel state out of the diversity-processed second data signals is transmitted in combination with the corresponding first data signal among the diversity-processed first data signals based on the feedback And transmitting the data signal through the antenna.
A second diversity processor for performing diversity processing on the coded and modulated second data signal;
A plurality of signal combining units for combining the signals transmitted from the first diversity processing unit and the second diversity processing unit; And
And a plurality of transmission / reception units that receive signals from the signal combining unit and transmit signals to corresponding antennas among the antennas constituting the multi-antenna system,
Wherein the diversity processing is performed so that the first data signal and the second data signal are allocated to the respective antennas of the multiple antennas and have diversity,
The plurality of signal synthesizers and the plurality of transceivers correspond one-to-one to the respective antennas constituting the multi-antenna system,
Wherein the transmit power of the second data signal increases as the diversity gain of the first data signal increases.
Wherein the signal combining unit combines, based on the feedback information, only a second data signal allocated to an antenna having a good channel state out of the diversity-processed second data signals, And transmitting the combined signal to a transmitter and receiver corresponding to an antenna having a good channel state.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100125998A KR101754104B1 (en) | 2010-12-10 | 2010-12-10 | Method And Apparatus For Transmitting Data Signal Using Multi Antenna |
| FR1161415A FR2968866A1 (en) | 2010-12-10 | 2011-12-09 | Method for transmitting data signals using multiple antennas in digital broadcast communications, involves performing process of diversity allocation of data signal and another data signal with regard to antennas for providing diversity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020100125998A KR101754104B1 (en) | 2010-12-10 | 2010-12-10 | Method And Apparatus For Transmitting Data Signal Using Multi Antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20120064798A KR20120064798A (en) | 2012-06-20 |
| KR101754104B1 true KR101754104B1 (en) | 2017-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020100125998A KR101754104B1 (en) | 2010-12-10 | 2010-12-10 | Method And Apparatus For Transmitting Data Signal Using Multi Antenna |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101754104B1 (en) |
| FR (1) | FR2968866A1 (en) |
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2010
- 2010-12-10 KR KR1020100125998A patent/KR101754104B1/en active IP Right Grant
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2011
- 2011-12-09 FR FR1161415A patent/FR2968866A1/en not_active Withdrawn
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| Publication number | Publication date |
|---|---|
| FR2968866A1 (en) | 2012-06-15 |
| KR20120064798A (en) | 2012-06-20 |
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