CN110649944B - Laminated 1T1R antenna system and single-input multi-output power equalization method - Google Patents
Laminated 1T1R antenna system and single-input multi-output power equalization method Download PDFInfo
- Publication number
- CN110649944B CN110649944B CN201910775533.XA CN201910775533A CN110649944B CN 110649944 B CN110649944 B CN 110649944B CN 201910775533 A CN201910775533 A CN 201910775533A CN 110649944 B CN110649944 B CN 110649944B
- Authority
- CN
- China
- Prior art keywords
- path
- radio frequency
- power
- frequency signal
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
- H04W16/20—Network planning tools for indoor coverage or short range network deployment
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a laminated 1T1R antenna system, which comprises a single-path transmission and power equalization module and a single-path broadband microstrip array antenna module, wherein the single-path broadband microstrip array antenna module comprises a single-path radiation antenna connected with the single-path transmission and power equalization module; the single-path transmission and power equalization module is used for transmitting and equalizing a single-path radio frequency signal and sending the single-path radio frequency signal to the single-path broadband microstrip array antenna module; and the single-path radiation antenna is used for receiving the single-path radio frequency signal and sending a constant-amplitude radiation signal. According to the invention, the plurality of broadband microstrip array antenna modules receive the single-path radio-frequency signals processed and sent by the plurality of antenna receiving power balancing modules and send the radiation signals, so that the radiation signals which are consistent in a rectangular coverage range formed along the single-path transmission direction are formed in space, and the mobile terminal can receive balanced and stable radiation signals when moving in the signal coverage range, thereby having a good receiving effect.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a laminated 1T1R antenna system and a single-input multi-output power balancing method.
Background
With the development of mobile communication technology, single-input Multiple-output (MIMO) technology has been applied to various mobile communication systems to increase system capacity, such as: a Long Term Evolution (LTE) system, a Wideband Code Division Multiple Access (WCDMA) system, and the like.
As indoor communication traffic is heavier and heavier, it is very necessary to apply MIMO in an indoor mobile communication system. At present, a 1T1R single-path multi-antenna system and a single-input multi-output power equalization method applying MIMO mainly receive a single-path radio frequency signal with equal amplitude and equal frequency through a single-path broadband antenna, and then send a single-path radiation signal with equal amplitude and same phase, thereby providing a single-path radiation signal with equal amplitude and same phase for a mobile terminal in an indoor space. However, due to the structural process and quality limitations of the original indoor coverage system, the coverage ranges, amplitudes and phases of the single-path transmission multi-antenna system radiation signals transmitted at the same point are inconsistent, so that the mobile terminal can only receive single-path radio frequency signals with uneven amplitudes under the coverage of signals in the same area in the moving process, the receiving effect is poor, and the MIMO application effect is poor.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a 1T1R antenna system and a single-input multi-output power equalization method, wherein a plurality of broadband microstrip array antenna modules are used for receiving single-path radio frequency signals processed and sent by a plurality of antenna receiving power equalization modules and then sending radiation signals, so that radiation signals which are consistent in a rectangular coverage range formed along a single-path transmission direction are formed in space, a mobile terminal can receive radiation signals which are balanced and stable when moving in a signal coverage range, and a good receiving effect is achieved.
The technical scheme adopted by the invention is as follows:
a laminated 1T1R antenna system comprises a single-path transmission and power equalization module and a single-path broadband microstrip array antenna module, wherein the single-path broadband microstrip array antenna module comprises a single-path radiation antenna connected with the single-path transmission and power equalization module;
the single-channel transmission and power equalization module is used for generating a single-channel radio frequency signal and sending the single-channel radio frequency signal to the single-channel broadband microstrip array antenna module;
and the single-path radiation antenna is used for receiving the single-path radio frequency signal and sending a constant-amplitude radiation signal.
Preferably, the single-channel transmission and power equalization module includes a 1T1R small base station and a power equalization module, the 1T1R small base station is connected to the power equalization module, and the power equalization module is respectively connected to the single-channel radiation antenna;
the 1T1R small base station is configured to generate a single radio frequency signal with equal amplitude and equal frequency, and send the single radio frequency signal to the power balancing module;
and the power balancing module is used for carrying out power processing on the received single-channel radio frequency signal and sending the single-channel radio frequency signal to the single-channel radiation antenna.
The power equalization module is used for carrying out amplitude processing on the radio frequency signals, so that the single-path radio frequency signals have balanced and stable radio frequency signals in a rectangular coverage area formed in the space along the single-path transmission direction.
Preferably, the power equalization module includes a radio frequency power equalizer and a single feeder line, and the radio frequency power equalizer is connected to the single radiating antenna through the single feeder line;
the radio frequency power equalizer is used for equalizing and distributing the power of the single-path radio frequency signal and sending the single-path radio frequency signal after power processing;
and the single feeder line is used for receiving the single radio-frequency signal from the radio-frequency power equalizer and sending the single radio-frequency signal to the single radiation antenna.
The system processes the transmitted single-path radio-frequency signal through the single antenna receiving power balancing module on the single-path broadband microstrip array antenna module and then transmits the constant-amplitude radiation signal, so that the radiation signal which is consistent in a rectangular coverage range formed along the single-path transmission direction is formed in space, and the mobile terminal can receive the balanced and stable radiation signal when moving in the signal coverage range, thereby having good receiving effect.
The invention also provides a single-input multi-output power balancing method by applying the 1T1R antenna system, and the technical scheme is as follows:
a single-input multiple-output power balancing method comprises the following steps:
the single-path transmission and power equalization module generates a single-path radio frequency signal and sends the single-path radio frequency signal to the single-path radiation antenna;
and the single-path radiation antenna receives the single-path radio frequency signal and sends a constant-amplitude radiation signal.
Preferably, the working steps of the single-channel transmission and power equalization module are specifically:
the 1T1R small base station generates a single-path radio frequency signal with equal amplitude and equal frequency, and sends the single-path radio frequency signal to a power balancing module;
and the power balancing module is used for carrying out power processing on the received single-channel radio-frequency signal and sending the processed single-channel radio-frequency signal to the single-channel radiation antenna.
Preferably, the working steps of the power balancing module are specifically:
the radio frequency power equalizer is used for equalizing and distributing the power of the single-path radio frequency signal and sending the single-path radio frequency signal after power processing;
and the single feeder receives the single radio frequency signal from the radio frequency power equalizer and sends the single radio frequency signal to the single radiation antenna.
Preferably, the radio frequency power equalizer transmits the single radio frequency signal according to a certain proportion and phase consistency according to the power of the single radio frequency signal.
Preferably, the radio frequency power equalizer distributes power according to the single radio frequency signal in a certain proportion, and then sends the single radio frequency signal at the same time.
The working principle of the 5G signal coverage of the invention is as follows: an outdoor 5G macro base station sends signals to an indoor 1T1R small base station through a cable, the 1T1R small base station transmits a single-path radio frequency signal to a radio frequency power equalizer through a single radio frequency transmission line, the radio frequency power equalizer is connected with a single-path radiation antenna, the radio frequency power equalizer equalizes and distributes the power of the single-path radio frequency signal through an internal coupling circuit, certain power (preset value) is distributed to the single-path radiation antenna according to a certain proportion, the radio frequency power equalizer is also connected with a next radio frequency power equalizer through another single radio frequency transmission line, the radio frequency power equalizer and the single-path radiation antenna of each group form a node, and the signal coverage of the whole indoor floor is realized through the series connection of a plurality of nodes, the lengths of the radio frequency transmission lines connecting two adjacent radio frequency power equalizers are equal, and two radio frequency transmission lines connected with two ends of the same radio frequency power equalizer need to ensure high symmetry, and a single-path radiation antenna connected with each radio frequency power equalizer also needs to ensure high symmetry, so that single-path radio frequency signals can always keep phase consistency. The power distributed on the single-path radiating antenna in each node is kept consistent, so that the power proportion distributed by the radio frequency power equalizer on each node to the corresponding single-path radiating antenna is different, and the loss of a radio frequency signal during transmission of the radio frequency transmission line is known because the length of the radio frequency transmission line is preset, so that the power proportion distributed by the radio frequency power equalizer in each node to the single-path radiating antenna in the node is as follows: the allocated power/(power transmitted from the previous node — power loss) of the predetermined one-way radiating antenna.
The invention has the beneficial effects that: according to the invention, the plurality of broadband microstrip array antenna modules receive the single-path radio-frequency signals processed and sent by the plurality of antenna receiving power balancing modules and send the radiation signals, so that the radiation signals which are consistent in a rectangular coverage range formed along the single-path transmission direction are formed in space, and the mobile terminal can receive balanced and stable radiation signals when moving in the signal coverage range, thereby having a good receiving effect.
Drawings
Fig. 1 is a schematic structural diagram of a stacked 1T1R antenna system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a single-channel transmission and power equalization module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a power balancing module according to an embodiment of the present invention;
fig. 4 is a flowchart of a single-input multiple-output power balancing method according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating operation of the single-channel transmission and power equalization module according to the embodiment of the present invention;
fig. 6 is a flowchart illustrating operation of the power balancing module according to an embodiment of the present invention.
Description of reference numerals:
1. a single-path transmission and power equalization module; 11. 1T1R small base station; 12. a power balancing module; 121. a radio frequency power equalizer; 122. a single feeder line;
2. a single-path broadband microstrip array antenna module; 21. a single-path radiating antenna.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example (b):
as shown in fig. 1, a stacked 1T1R antenna system includes a single-channel transmission and power equalization module 121 and a single-channel broadband microstrip array antenna module 2, where the single-channel broadband microstrip array antenna module 2 includes a single-channel radiation antenna 21 connected to the single-channel transmission and power equalization module 121;
the single-channel transmission and power equalization module 121 is configured to transmit and equalize a single-channel radio frequency signal and send the single-channel radio frequency signal to the single-channel broadband microstrip array antenna module 2;
the single-path radiation antenna 21 is configured to receive the single-path radio frequency signal and send a constant-amplitude radiation signal.
The single-path broadband microstrip array antenna module 2 transmits a single-path radio frequency signal with a frequency required by MIMO application according to the specific requirement of the indoor mobile communication system for applying MIMO, it can be understood that, since the specific indoor mobile communication system is different, the frequency required by applying MIMO is also different, for example, if the frequency required by applying MIMO in LTE is a radiation radio frequency signal of 2500-. The 1T1R small cell 11 sends the single radio frequency signal to the single broadband microstrip array antenna module 2 through the single feeder line, forming the indoor coverage of uniform field intensity.
The single-path broadband microstrip array antenna module 2 comprises a single-path radiation antenna 21, and the size of the single-path radiation antenna 21 on the single-path broadband microstrip array antenna module 2 is specifically set according to the frequency required by the application of MIMO in the indoor mobile communication system.
The single-path broadband microstrip array antenna module 2 receives a single-path radio frequency signal through the single-path radiation antenna 21, the single-path radiation antenna 21 sends the single-path radiation signal to an indoor space after receiving the single-path radio frequency signal, therefore, the radiation range of the single-path radio frequency signal forms uniform field intensity in the space, the single-path radiation signal can be always received by the indoor mobile terminal in the moving process of the signal coverage range, a good equal-amplitude receiving effect can be obtained, and MIMO is applied to the indoor mobile communication system to the maximum extent.
Therefore, the system receives the single-path radio-frequency signal sent by the single-path transmission and power equalization module 121 through the single feeder line through the single-path radiation antenna 21 on the single-path broadband microstrip array antenna module 2 and then sends the radiation signal, so that the radiation signal covering the indoor range is formed in space, the mobile terminal can receive the single-path related radiation signal when moving in the signal covering range, and a good receiving effect is achieved. Meanwhile, the indoor distributed antenna system provided by the embodiment realizes the transmission of a single-path signal only by using one single-path broadband antenna module, and the antenna is portable and is favorable for indoor arrangement.
In one embodiment, as shown in fig. 2, the single transmission and power equalization module 121 includes a 1T1R small base station 11 and a power equalization module 12, the 1T1R small base station 11 is connected to the power equalization module 12, and the power equalization module 12 is respectively connected to the single radiation antenna 21;
the 1T1R small cell 11 is configured to generate a single radio frequency signal with equal amplitude and equal frequency, and send the single radio frequency signal to the power balancing module 12;
the power equalization module 12 is configured to perform power processing on the received single-channel radio frequency signal, and send the processed single-channel radio frequency signal to the single-channel radiation antenna 21.
After receiving the single-channel radio frequency signal, the power equalization module 12 performs power distribution and equalization processing on the single-channel radio frequency signal, so as to perform power distribution and equal-amplitude and same-phase processing on the single-channel radio frequency signal according to the specific power of the single-channel radio frequency signal. If the power of the single-path radio frequency signal is too large, the amplitude of the single-path radio frequency signal is processed, and the power equalization module 12 sends the processed single-path radio frequency signal with equal amplitude, equal frequency and the same phase to the single-path radiation antenna 21 of the single-path broadband microstrip array antenna module 2 through a single feeder line, so that the coverage of the single-path indoor antenna is ensured.
In one embodiment, as shown in fig. 3, the power equalization module 12 includes a radio frequency power equalizer 121 and a single feeder 122, where the radio frequency power equalizer 121 is connected to the single radiating antenna 21 through the single feeder 122;
wherein, the radio frequency power equalizer 121 equalizes and distributes the power of the single-channel radio frequency signal, and transmits the single-channel radio frequency signal after power processing;
the single feeder 122 is configured to receive a single rf signal from the rf power equalizer 121 and send the single rf signal to the single radiating antenna 21.
After the power equalization module 12 performs power processing on the radio frequency signals transmitted from the 1T1R small base station 11, the single-path radiation antenna 21 receives the single-path equal-amplitude equal-frequency and same-phase signals processed by the radio frequency power equalizer 121 and transmits radiation signals, so that single-path equal-amplitude equal-phase radiation signals with the same coverage range are formed in space. In addition, the wiring of the invention is simple, so that the circuit layout can be more flexibly carried out according to the actual situation.
As shown in fig. 4, a single-input multiple-output power balancing method includes the following steps:
s1, the single transmission and power equalization module 121 performs power equalization processing on the single rf signal and sends the single rf signal to the single radiating antenna 21;
and S2, the single-path radiation antenna 21 receives the single-path radio frequency signal and sends a constant amplitude radiation signal.
In one embodiment, as shown in fig. 5, the operation steps of the single-channel transmission and power equalization module 121 specifically include:
s11, the 1T1R small base station 11 generates a single-path radio frequency signal with equal amplitude and equal frequency, and sends the single-path radio frequency signal to the power balancing module 12;
s12, the power equalization module 12 performs power processing on the received single rf signal, and sends the processed single rf signal to the single radiating antenna 21.
In one embodiment, as shown in fig. 6, the operation steps of the power balancing module 12 are specifically:
s121, the radio frequency power equalizer 121 equalizes and distributes the power of the single-channel radio frequency signal, and sends the single-channel radio frequency signal with equal amplitude and equal frequency after power processing;
s122, the single feeder 122 receives the single rf signal from the rf power equalizer 121 and sends the single rf signal to the single radiating antenna 21.
The rf power equalizer 121 transmits the single rf signal according to a certain ratio and phase consistency according to the power of the single rf signal.
The rf power equalizer 121 distributes power according to the single rf signal in a certain ratio, and then transmits the single rf signal at the same time.
All or part of the steps of implementing the above method embodiments may be implemented by hardware associated with program instructions, and the program may be stored in a computer-readable storage medium, which includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (1)
1. A laminated 1T1R antenna system is characterized by comprising a single-path transmission and power equalization module and a single-path broadband microstrip array antenna module, wherein the single-path broadband microstrip array antenna module comprises a single-path radiation antenna connected with the single-path transmission and power equalization module;
the single-channel transmission and power equalization module is used for transmitting and equalizing a single-channel radio frequency signal and sending the single-channel radio frequency signal to the single-channel broadband microstrip array antenna module;
the single-path transmission and power balancing module comprises a 1T1R small base station and a power balancing module, wherein the 1T1R small base station is connected with the power balancing module, and the power balancing module is respectively connected with the single-path radiation antenna;
the 1T1R small base station is configured to generate a single radio frequency signal with equal amplitude and equal frequency, and send the single radio frequency signal to the power balancing module;
the power balancing module is used for performing power processing on the received single-channel radio frequency signal and sending the processed single-channel radio frequency signal to the single-channel radiation antenna;
the power balancing module comprises a radio frequency power equalizer and a single feeder line, and the radio frequency power equalizer is connected with the single radiation antenna through the single feeder line;
the radio frequency power equalizer is used for equalizing and distributing the power of the single-path radio frequency signal and sending the single-path radio frequency signal after power processing;
the single feeder line is used for receiving a single radio frequency signal from the radio frequency power equalizer and sending the single radio frequency signal to the single radiation antenna;
the single-path transmission and power equalization module performs power equalization processing on the single-path radio-frequency signal and sends the single-path radio-frequency signal to the single-path radiation antenna;
the single-path radiation antenna receives the single-path radio frequency signal and sends a constant-amplitude radiation signal;
the working steps of the single-path transmission and power balancing module are as follows: the 1T1R small base station generates a single-path radio frequency signal with equal amplitude and equal frequency, and sends the single-path radio frequency signal to a power balancing module;
the power balancing module carries out power processing on the received single-channel radio frequency signal and sends the processed single-channel radio frequency signal to the single-channel radiation antenna;
the working steps of the power balancing module are specifically as follows: the radio frequency power equalizer is used for equalizing and distributing the power of the single-path radio frequency signal and sending the single-path radio frequency signal after power processing;
a single feeder receives a single radio frequency signal from the radio frequency power equalizer and sends the single radio frequency signal to the single radiation antenna;
and the single-path radiation antenna is used for receiving the single-path radio frequency signal and sending a constant-amplitude radiation signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910775533.XA CN110649944B (en) | 2019-08-21 | 2019-08-21 | Laminated 1T1R antenna system and single-input multi-output power equalization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910775533.XA CN110649944B (en) | 2019-08-21 | 2019-08-21 | Laminated 1T1R antenna system and single-input multi-output power equalization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110649944A CN110649944A (en) | 2020-01-03 |
| CN110649944B true CN110649944B (en) | 2021-11-09 |
Family
ID=69009815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910775533.XA Active CN110649944B (en) | 2019-08-21 | 2019-08-21 | Laminated 1T1R antenna system and single-input multi-output power equalization method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110649944B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111740749A (en) * | 2020-05-15 | 2020-10-02 | 成都喜马拉雅电通网络有限公司 | Single-path power balanced distribution device for dual-polarized antenna |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2591903Y (en) * | 2002-11-22 | 2003-12-10 | 深圳市联波通信技术有限公司 | Mobile communication multinet junction indoor covering system |
| CN201893937U (en) * | 2010-11-25 | 2011-07-06 | 深圳市瑞凯德科技有限公司 | Indoor signal cover system |
| CN102281548A (en) * | 2011-08-01 | 2011-12-14 | 深圳市云海通讯股份有限公司 | Frequency domain decomposition-long term evolution (FDD-LTE) indoor coverage system |
| CN102316475A (en) * | 2011-09-30 | 2012-01-11 | 武汉虹信通信技术有限责任公司 | System for realizing mobile communication multiple input multiple output (MIMO) indoor coverage by single feeder |
| CN102577168A (en) * | 2009-07-27 | 2012-07-11 | Ace技术株式会社 | Base station antenna device embedded with transmission and receiving module |
| CN102637963A (en) * | 2012-03-28 | 2012-08-15 | 中国联合网络通信集团有限公司 | Indoor distributed antenna system and multiple input multiple output method |
| CN203340293U (en) * | 2013-06-18 | 2013-12-11 | 京信通信***（广州）有限公司 | Low-power multi-antenna tunnel distribution coverage system |
| CN203827343U (en) * | 2014-04-22 | 2014-09-10 | 芯迪半导体科技（上海）有限公司 | MIMO transmission-reception system for power line transmission |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9450654B2 (en) * | 2013-07-19 | 2016-09-20 | Nec Corporation | Multi-user multiple input multiple output (MIMO) communication with distributed antenna systems in wireless networks |
-
2019
- 2019-08-21 CN CN201910775533.XA patent/CN110649944B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2591903Y (en) * | 2002-11-22 | 2003-12-10 | 深圳市联波通信技术有限公司 | Mobile communication multinet junction indoor covering system |
| CN102577168A (en) * | 2009-07-27 | 2012-07-11 | Ace技术株式会社 | Base station antenna device embedded with transmission and receiving module |
| CN201893937U (en) * | 2010-11-25 | 2011-07-06 | 深圳市瑞凯德科技有限公司 | Indoor signal cover system |
| CN102281548A (en) * | 2011-08-01 | 2011-12-14 | 深圳市云海通讯股份有限公司 | Frequency domain decomposition-long term evolution (FDD-LTE) indoor coverage system |
| CN102316475A (en) * | 2011-09-30 | 2012-01-11 | 武汉虹信通信技术有限责任公司 | System for realizing mobile communication multiple input multiple output (MIMO) indoor coverage by single feeder |
| CN102637963A (en) * | 2012-03-28 | 2012-08-15 | 中国联合网络通信集团有限公司 | Indoor distributed antenna system and multiple input multiple output method |
| CN203340293U (en) * | 2013-06-18 | 2013-12-11 | 京信通信***（广州）有限公司 | Low-power multi-antenna tunnel distribution coverage system |
| CN203827343U (en) * | 2014-04-22 | 2014-09-10 | 芯迪半导体科技（上海）有限公司 | MIMO transmission-reception system for power line transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110649944A (en) | 2020-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7241707B2 (en) | DATA TRANSMISSION METHOD, DEVICE, NETWORK SIDE DEVICE AND USER DEVICE | |
| US11838079B2 (en) | MIMO systems | |
| CN110635251B (en) | 2T2R symmetrical antenna system and multi-input multi-output power balancing method | |
| US10637545B2 (en) | Spatial separation sub-system for supporting multiple-input/multiple-output operations in distributed antenna systems | |
| CN107733485B (en) | Feedback method and device of channel state information | |
| CN105337646B (en) | Multiple antennas implementation method, apparatus and system | |
| WO2010093140A2 (en) | Uplink precoding method in 2 -tx system | |
| KR102159576B1 (en) | Fingerprint-based interference cancellation system and method | |
| WO2018040020A1 (en) | Method for adjusting power of antenna signal and base station | |
| CN110661074B (en) | 4T4R symmetrical antenna system and multi-input multi-output power balancing method | |
| CN107094038B (en) | Method, device and system for adjusting power of antenna system | |
| CN110649944B (en) | Laminated 1T1R antenna system and single-input multi-output power equalization method | |
| US20210218152A1 (en) | Antenna apparatus | |
| CN110581367B (en) | 4T6R symmetrical antenna system and multi-input multi-output power balancing method | |
| CN205566653U (en) | Indoor distribution system | |
| CN110830069B (en) | Indoor signal equalization distribution system and method capable of saving cost | |
| US20230188180A1 (en) | Grouping in Series-Connected Radios | |
| CN111585048A (en) | 8T8R symmetrical antenna system and multi-input multi-output power balancing method | |
| WO2021134366A1 (en) | Antenna transceiver module, multi-input multi-output antenna transceiver system, and base station | |
| CN111525282A (en) | 2T6R symmetrical antenna system and multi-input multi-output power balancing method | |
| CN111525283A (en) | 4T12R symmetrical antenna system and multi-input multi-output power balancing method | |
| CN110868721B (en) | Indoor signal balanced distribution system and method | |
| CN114340049B (en) | POI device and wireless coverage system | |
| US11777619B2 (en) | Dielectric waveguide signal transfer function compensation | |
| US20240214055A1 (en) | In-building radio unit applied to open lan with frequency resource distribution path for front-end unit, system including same, and control method for same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |