CN114553271B - Single-cable MIMO distribution system and single-cable MIMO signal processing method - Google Patents
Single-cable MIMO distribution system and single-cable MIMO signal processing method Download PDFInfo
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- CN114553271B CN114553271B CN202011337260.XA CN202011337260A CN114553271B CN 114553271 B CN114553271 B CN 114553271B CN 202011337260 A CN202011337260 A CN 202011337260A CN 114553271 B CN114553271 B CN 114553271B
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present disclosure provides a single-cable MIMO distribution system and a single-cable MIMO signal processing method. The near-end frequency shifter receives a first downlink MIMO signal through a first port, receives a second downlink MIMO signal through a second port, directly inputs the first downlink MIMO signal into the indoor distribution system through a third port, performs frequency shifting processing on the second downlink MIMO signal to obtain a first frequency-shifted signal, and inputs the first frequency-shifted signal into the indoor distribution system through the third port; the remote frequency shifter acquires a first frequency shift signal from the indoor distribution system through a fourth port, performs frequency shift processing on the first frequency shift signal to obtain a second downlink MIMO signal, amplifies the power of the second downlink MIMO signal, and inputs the second downlink MIMO signal into the indoor distribution system through the fourth port. The single-cable MIMO coverage can be realized under the scene that the feeder lines are radially distributed.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a single-cable MIMO (Multiple-Input Multiple-Output) distribution system and a single-cable MIMO signal processing method.
Background
The indoor distribution system is connected into a loop, MIMO coverage can be realized by utilizing a single cable through bidirectional flow, and the construction cost of the indoor distribution system is reduced.
Disclosure of Invention
The inventors found through studies that in the related art, in order to achieve MIMO coverage through a single cable, signals need to be simultaneously fed from both ends of an indoor distribution system. This approach is only suitable for the case of annular distribution of the feeders, but not for the case of radial distribution of the feeders.
Accordingly, the present disclosure provides a single-cable MIMO distribution system capable of realizing single-cable MIMO coverage in a scenario in which feeder lines are radially distributed.
According to a first aspect of embodiments of the present disclosure, there is provided a single cable MIMO distribution system, comprising: the near-end frequency shifter is configured to receive a first downlink MIMO signal through a first port, receive a second downlink MIMO signal through a second port, directly input the first downlink MIMO signal into an indoor distribution system through a third port, perform frequency shifting processing on the second downlink MIMO signal to obtain a first frequency shifted signal, and input the first frequency shifted signal into the indoor distribution system through the third port; the remote frequency shifter is configured to acquire the first frequency shift signal from the indoor distribution system through a fourth port, perform frequency shift processing on the first frequency shift signal to obtain the second downlink MIMO signal, amplify the power of the second downlink MIMO signal, and input the second downlink MIMO signal into the indoor distribution system through the fourth port.
In some embodiments, the remote frequency shifter is further configured to acquire a second uplink MIMO signal from the indoor distribution system through the fourth port, perform frequency shifting processing on the second uplink MIMO signal to obtain a second frequency shifted signal, and input the second frequency shifted signal to the indoor distribution system through the fourth port; the near-end frequency shifter is further configured to acquire a first uplink MIMO signal and the second frequency shift signal from the indoor distribution system through the third port, send the first uplink MIMO signal to a network access device through the first port, perform frequency shift processing on the second frequency shift signal to obtain the second uplink MIMO signal, and send the second uplink MIMO signal to the network access device through the second port.
In some embodiments, the near-end frequency shifter comprises: a main line configured to connect the first port and the third port so that the third port directly inputs the first downlink MIMO signal received by the first port to the indoor distribution system; a first circulator configured to transmit the second downlink MIMO signal received by the second port to a first frequency shifter; the first frequency shifter is configured to perform frequency shifting processing on the second downlink MIMO signal to obtain a first frequency-shifted signal; and a first coupler configured to couple an output end of the first frequency shifter and the main line so that the third port inputs the first frequency-shifted signal to the indoor distribution system.
In some embodiments, the remote frequency shifter comprises: the second circulator is configured to send the first frequency shift signal received by the fourth port to the power divider and also input an output signal of the power amplifier into the indoor distribution system through the fourth port; a power divider configured to send the first frequency-shifted signal to a third frequency shifter; a third frequency shifter configured to perform frequency shift processing on the first frequency-shifted signal to obtain the second downlink MIMO signal; and a power amplifier configured to power amplify the second downlink MIMO signal and transmit an output signal to the second circulator.
In some embodiments, the remote frequency shifter further comprises a fourth frequency shifter and a third coupler; the second circulator is configured to send the second uplink MIMO signal received by the fourth port to the power divider, and further input the second frequency shift signal output by the fourth frequency shifter to the indoor distribution system through the fourth port; the power divider is configured to transmit the second uplink MIMO signal to a third frequency shifter; the fourth frequency shifter is configured to perform frequency shifting processing on the second uplink MIMO signal to obtain the second frequency shifted signal; the third coupler is configured to couple an output of the fourth frequency shifter and an input of the second circulator.
In some embodiments, the proximal frequency shifter further comprises a second coupler and a second frequency shifter; the main circuit is further configured to send the first uplink MIMO signal received by the third port from the indoor distribution system to the network access device through the first port; a second coupler configured to couple an input of the second frequency shifter and the main line; the second frequency shifter is configured to perform frequency shifting processing on the second frequency-shifted signal received by the third port from the indoor distribution system so as to obtain the second uplink MIMO signal; the first circulator is further configured to transmit the second uplink MIMO signal output by the second frequency shifter to the network access device through the second port.
According to a second aspect of the embodiments of the present disclosure, there is provided a single cable MIMO information processing method, including: the near-end frequency shifter receives a first downlink MIMO signal through a first port and receives a second downlink MIMO signal through a second port; the near-end frequency shifter directly inputs the first downlink MIMO signal into an indoor distribution system through a third port; the near-end frequency shifter performs frequency shifting processing on the second downlink MIMO signal to obtain a first frequency shifting signal, and the first frequency shifting signal is input into the indoor distribution system through the third port; the remote frequency shifter acquires the first frequency shift signal from the indoor distribution system through a fourth port, performs frequency shift processing on the first frequency shift signal to obtain the second downlink MIMO signal, amplifies the power of the second downlink MIMO signal, and inputs the second downlink MIMO signal into the indoor distribution system through the fourth port.
In some embodiments, the remote frequency shifter acquires a second uplink MIMO signal from the indoor distribution system through the fourth port, performs frequency shifting processing on the second uplink MIMO signal to obtain a second frequency shifted signal, and inputs the second frequency shifted signal to the indoor distribution system through the fourth port; the near-end frequency shifter acquires a first uplink MIMO signal and the second frequency shift signal from the indoor distribution system through the third port; the near-end frequency shifter transmits the first uplink MIMO signal to a network access device through the first port; and the near-end frequency shifter performs frequency shifting processing on the second frequency-shifted signal to obtain the second uplink MIMO signal, and sends the second uplink MIMO signal to the network access equipment through the second port.
In some embodiments, the near-end frequency shifter performing frequency shifting on the second downlink MIMO signal to obtain a first frequency shifted signal includes: the first circulator sends the second downlink MIMO signal received by the second port to a first frequency shifter; and the first frequency shifter performs frequency shifting processing on the second downlink MIMO signal to obtain a first frequency-shifted signal, and the first frequency-shifted signal is input into the indoor distribution system through the third port.
In some embodiments, the remote frequency shifter performs frequency shifting processing on the first frequency-shifted signal to obtain the second downlink MIMO signal, and inputs the second downlink MIMO signal to the indoor distribution system through a fourth port after performing power amplification, where the remote frequency shifter includes: the second circulator sends the first frequency shift signal received by the fourth port to a power divider; the power divider sends the first frequency shift signal to a third frequency shifter; a third frequency shifter performs frequency shift processing on the first frequency shift signal to obtain the second downlink MIMO signal; the power amplifier performs power amplification on the second downlink MIMO signal and sends an output signal to the second circulator; and the second circulator inputs the output signal of the power amplifier into the indoor distribution system through the fourth port.
In some embodiments, the far-end frequency shifter performs frequency shift processing on the second uplink MIMO signal to obtain a second frequency shifted signal, and inputs the second frequency shifted signal to the indoor distribution system through the fourth port further includes: the second circulator sends the second uplink MIMO signal received by the fourth port to the power divider; the power divider transmits the second uplink MIMO signal to a fourth frequency shifter; the fourth frequency shifter shifts the frequency of the second uplink MIMO signal to obtain a second frequency-shifted signal; and the second circulator inputs the second frequency shift signal output by the fourth frequency shifter into the indoor distribution system through the fourth port.
In some embodiments, the near-end frequency shifter performing frequency shifting on the second frequency-shifted signal to obtain the second uplink MIMO signal includes: the second frequency shifter shifts the frequency of the second frequency-shifted signal received by the third port from the indoor distribution system to obtain the second uplink MIMO signal; and the first circulator sends the second uplink MIMO signal output by the second frequency shifter to the network access equipment through the second port.
Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a single cable MIMO distribution system according to one embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a proximal frequency shifter according to one embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a remote frequency shifter according to one embodiment of the present disclosure;
fig. 4 is a flow diagram of a single cable MIMO information processing method according to one embodiment of the present disclosure;
fig. 5 is a flow chart of a single cable MIMO information processing method according to another embodiment of the present disclosure.
It should be understood that the dimensions of the various elements shown in the figures are not drawn to actual scale. Further, the same or similar reference numerals denote the same or similar members.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative, and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, and the numerical values set forth in these examples should be construed as merely illustrative, and not limiting unless specifically stated otherwise.
The use of the terms "comprising" or "including" and the like in this disclosure means that elements preceding the term encompass the elements recited after the term, and does not exclude the possibility of also encompassing other elements.
All terms (including technical or scientific terms) used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs, unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
Fig. 1 is a schematic structural diagram of a single cable MIMO distribution system according to one embodiment of the present disclosure. As shown in fig. 1, the single cable MIMO distribution system includes a near-end frequency shifter 1 and a far-end frequency shifter 2. The proximal frequency shifter 1 is provided with a first port 11, a second port 12 and a third port 13, and the distal frequency shifter 2 is provided with a fourth port 14.
The near-end frequency shifter 1 receives a first downlink MIMO signal through a first port 11 and a second downlink MIMO signal through a second port 12. The near-end frequency shifter 1 directly inputs the first downlink MIMO signal into the indoor distribution system through the third port 13, performs frequency shifting processing on the second downlink MIMO signal to obtain a first frequency shifted signal, and inputs the first frequency shifted signal into the indoor distribution system through the third port 13.
The remote frequency shifter 2 obtains a first frequency shift signal from the indoor distribution system through the fourth port 14, performs frequency shift processing on the first frequency shift signal to obtain a second downlink MIMO signal, amplifies the power of the second downlink MIMO signal, and inputs the second downlink MIMO signal into the indoor distribution system through the fourth port 14.
In the single-cable MIMO distribution system provided in the foregoing embodiment of the present disclosure, the near-end frequency shifter directly accesses one path of MIMO signal to the indoor distribution system, and accesses the other path of MIMO signal after frequency shifting, and the far-end frequency shifter restores the same to the original frequency and inputs the same to the indoor distribution system, so as to achieve single-cable MIMO coverage.
In some embodiments, the remote frequency shifter 2 obtains a second uplink MIMO signal from the indoor distribution system through the fourth port 14, performs frequency shifting processing on the second uplink MIMO signal to obtain a second frequency shifted signal, and inputs the second frequency shifted signal into the indoor distribution system through the fourth port 14.
The near-end frequency shifter 1 acquires a first uplink MIMO signal and a second frequency shift signal from the indoor distribution system through a third port 13, sends the first uplink MIMO signal to the network access device through the first port 11, performs frequency shift processing on the second frequency shift signal to obtain a second uplink MIMO signal, and sends the second uplink MIMO signal to the network access device through the second port. Thereby realizing uplink transmission of the MIMO signal.
Fig. 2 is a schematic diagram of a configuration of a near-end frequency shifter according to one embodiment of the present disclosure. As shown in fig. 2, the near-end frequency shifter includes a main line 21, a first circulator 22, a first frequency shifter 23, and a first coupler 24.
The main line 21 connects the first port 11 and the third port 13 so that the third port 13 directly inputs the first downlink MIMO signal received by the first port 11 into the indoor distribution system.
The first circulator 22 transmits the second downlink MIMO signal received by the second port 12 to the first frequency shifter 23.
The first frequency shifter 23 performs frequency shifting processing on the second downlink MIMO signal to obtain a first frequency shifted signal. For example, the frequency of the second downlink MIMO signal is F0, and after the frequency shift processing, the frequency of the second downlink MIMO signal is changed to IF1.
The first coupler 24 couples the output of the first frequency shifter 23 with the main line 21 so that the third port 13 inputs the first frequency shifted signal into the indoor distribution system.
Fig. 3 is a schematic diagram of a configuration of a remote frequency shifter according to one embodiment of the present disclosure. As shown in fig. 3, the remote frequency shifter includes a second circulator 31, a power divider 32, a third frequency shifter 33, and a power amplifier 34.
The second circulator 31 transmits the first frequency-shifted signal received by the fourth port 14 to the power divider 32.
The power divider 32 sends the first frequency shifted signal to the third frequency shifter 33.
The third frequency shifter 33 performs frequency shifting processing on the first frequency-shifted signal to obtain a second downlink MIMO signal. For example, the frequency of the first frequency-shifted signal is IF1, and after the frequency-shifting process, the frequency of the first frequency-shifted signal is changed to F0, thereby obtaining the second downlink MIMO signal.
The power amplifier 34 power amplifies the second downlink MIMO signal and transmits the output signal to the second circulator 31.
The second circulator 31 inputs the output signal of the power amplifier 34 to the indoor distribution system through the fourth port 14.
Through the processing, the downlink transmission of the MIMO signal is realized.
In some embodiments, as shown in fig. 3, the distal frequency shifter further comprises a fourth frequency shifter 35 and a third coupler 36.
The second circulator 31 transmits the second uplink MIMO signal received at the fourth port to the power divider 32.
The power divider 32 transmits the second uplink MIMO signal to the fourth frequency shifter 35.
The fourth frequency shifter 35 performs frequency shifting processing on the second uplink MIMO signal to obtain a second frequency shifted signal. For example, the frequency of the second uplink MIMO signal is F0, and after the frequency shift processing, the frequency of the second uplink MIMO signal is changed to IF2.
The third coupler 36 couples the output of the fourth frequency shifter 35 with the input of the second circulator 51 so that the second circulator 31 inputs the second frequency-shifted signal output from the fourth frequency shifter 35 to the indoor distribution system through the fourth port 14.
In some embodiments, as shown in fig. 2, the proximal frequency shifter further comprises a second coupler 25 and a second frequency shifter 26.
The main line 21 transmits the first uplink MIMO signal received from the indoor distribution system by the third port 13 to the network access device through the first port 11.
The second coupler 25 couples the input terminal of the second frequency shifter 26 with the main line 21, so that the second frequency shifter 26 performs frequency shift processing on the second frequency-shifted signal received by the third port 13 from the indoor distribution system to obtain a second uplink MIMO signal. For example, the frequency of the second frequency-shifted signal is IF2, and after the frequency-shifting process, the frequency of the second frequency-shifted signal is changed to F0, thereby obtaining a second uplink MIMO signal.
The first circulator 22 transmits the second uplink MIMO signal output from the second frequency shifter 26 to the network access device through the second port 12.
Through the processing, the uplink transmission of the MIMO signal is realized.
Fig. 4 is a flow diagram of a single cable MIMO information processing method according to one embodiment of the present disclosure. The embodiment is used for realizing downlink transmission of the MIMO signal.
In step 401, the near-end frequency shifter receives a first downlink MIMO signal through a first port and a second downlink MIMO signal through a second port.
In step 402, the near-end frequency shifter directly inputs the first downlink MIMO signal to the indoor distribution system through the third port.
In step 403, the near-end frequency shifter performs frequency shift processing on the second downlink MIMO signal to obtain a first frequency-shifted signal, and inputs the first frequency-shifted signal to the indoor distribution system through the third port.
In some embodiments, as shown in fig. 2, the first circulator 22 sends the second downlink MIMO signal received by the second port to the first frequency shifter 23, and the first frequency shifter 23 performs frequency shifting processing on the second downlink MIMO signal to obtain a first frequency shifted signal, so that the first frequency shifted signal is input into the indoor distribution system through the third port 13.
In step 404, the remote frequency shifter obtains a first frequency shift signal from the indoor distribution system through the fourth port, performs frequency shift processing on the first frequency shift signal to obtain a second downlink MIMO signal, and inputs the second downlink MIMO signal to the indoor distribution system through the fourth port after power amplification.
In some embodiments, as shown in fig. 3, the second circulator 31 sends the first frequency-shifted signal received by the fourth port 14 to the power divider 32, the power divider 32 sends the first frequency-shifted signal to the third frequency shifter 33, the third frequency shifter 33 performs frequency-shifting processing on the first frequency-shifted signal to obtain a second downlink MIMO signal, the power amplifier 34 performs power amplification on the second downlink MIMO signal, and sends the output signal to the second circulator 31, and the second circulator 31 inputs the output signal of the power amplifier 34 into the indoor distribution system through the fourth port 14.
Fig. 5 is a flow chart of a single cable MIMO information processing method according to another embodiment of the present disclosure. The embodiment is used for realizing uplink transmission of the MIMO signal.
In step 501, the remote frequency shifter obtains a second uplink MIMO signal from the indoor distribution system through the fourth port, performs frequency shifting processing on the second uplink MIMO signal to obtain a second frequency shifted signal, and inputs the second frequency shifted signal to the indoor distribution system through the fourth port.
In some embodiments, as shown in fig. 3, the second circulator 31 sends the second uplink MIMO signal received by the fourth port 14 to the power divider 32. The power divider 32 sends the second uplink MIMO signal to the fourth frequency shifter 35, and the fourth frequency shifter 35 performs frequency shift processing on the second uplink MIMO signal to obtain a second frequency-shifted signal. The second circulator 31 inputs the second frequency-shifted signal output from the fourth frequency shifter 35 to the indoor distribution system through the fourth port 14.
In step 502, the near-end frequency shifter acquires a first uplink MIMO signal and a second frequency-shifted signal from the indoor distribution system through a third port.
In step 503, the near-end frequency shifter transmits the first uplink MIMO signal to the network access device through the first port.
In step 504, the near-end frequency shifter performs frequency shift processing on the second frequency-shifted signal to obtain a second uplink MIMO signal, and sends the second uplink MIMO signal to the network access device through the second port.
In some embodiments, as shown in fig. 2, the second frequency shifter 26 performs frequency shifting processing on the second frequency-shifted signal received by the third port 13 from the indoor distribution system to obtain a second uplink MIMO signal. The first circulator 22 transmits the second uplink MIMO signal output from the second frequency shifter 26 to the network access device through the second port 12.
Thus, embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that the foregoing embodiments may be modified and equivalents substituted for elements thereof without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (6)
1. A single cable MIMO distribution system comprising:
the near-end frequency shifter is configured to receive a first downlink MIMO signal through a first port, receive a second downlink MIMO signal through a second port, directly input the first downlink MIMO signal into an indoor distribution system through a third port, perform frequency shifting processing on the second downlink MIMO signal to obtain a first frequency shifted signal, input the first frequency shifted signal into the indoor distribution system through the third port, acquire a first uplink MIMO signal and a second frequency shifted signal from the indoor distribution system through the third port, send the first uplink MIMO signal to a network access device through the first port, perform frequency shifting processing on the second frequency shifted signal to obtain a second uplink MIMO signal, and send the second uplink MIMO signal to the network access device through the second port;
the remote frequency shifter is configured to acquire the first frequency shift signal from the indoor distribution system through a fourth port, perform frequency shift processing on the first frequency shift signal to acquire the second downlink MIMO signal, amplify the power of the second downlink MIMO signal, and then input the second downlink MIMO signal into the indoor distribution system through the fourth port; the indoor distribution system is further configured to acquire a second uplink MIMO signal from the indoor distribution system through the fourth port, perform frequency shift processing on the second uplink MIMO signal to obtain a second frequency shift signal, and input the second frequency shift signal into the indoor distribution system through the fourth port;
wherein, the remote frequency shifter includes:
the second circulator is configured to send the first frequency shift signal received by the fourth port to the power divider and also input an output signal of the power amplifier into the indoor distribution system through the fourth port; the indoor distribution system is further configured to send the second uplink MIMO signal received by the fourth port to the power divider, and input a second frequency shift signal output by a fourth frequency shifter to the indoor distribution system through the fourth port;
a power divider configured to send the first frequency-shifted signal to a third frequency shifter; and is further configured to transmit the second uplink MIMO signal to a fourth frequency shifter;
a third frequency shifter configured to perform frequency shift processing on the first frequency-shifted signal to obtain the second downlink MIMO signal;
a power amplifier configured to power amplify the second downlink MIMO signal and transmit an output signal to the second circulator;
a fourth frequency shifter configured to perform frequency shift processing on the second uplink MIMO signal to obtain the second frequency-shifted signal;
and a third coupler configured to couple an output of the fourth frequency shifter and an input of the second circulator.
2. The system of claim 1, wherein the near-end frequency shifter comprises:
a main line configured to connect the first port and the third port so that the third port directly inputs the first downlink MIMO signal received by the first port to the indoor distribution system;
a first circulator configured to transmit the second downlink MIMO signal received by the second port to a first frequency shifter;
the first frequency shifter is configured to perform frequency shifting processing on the second downlink MIMO signal to obtain a first frequency-shifted signal;
and a first coupler configured to couple an output end of the first frequency shifter and the main line so that the third port inputs the first frequency-shifted signal to the indoor distribution system.
3. The system of claim 2, wherein the proximal frequency shifter further comprises a second coupler and a second frequency shifter;
the main circuit is further configured to send the first uplink MIMO signal received by the third port from the indoor distribution system to the network access device through the first port;
a second coupler configured to couple an input of the second frequency shifter and the main line;
the second frequency shifter is configured to perform frequency shifting processing on the second frequency-shifted signal received by the third port from the indoor distribution system so as to obtain the second uplink MIMO signal;
the first circulator is further configured to transmit the second uplink MIMO signal output by the second frequency shifter to the network access device through the second port.
4. A single cable MIMO information processing method comprises the following steps:
the near-end frequency shifter receives a first downlink MIMO signal through a first port and receives a second downlink MIMO signal through a second port;
the near-end frequency shifter directly inputs the first downlink MIMO signal into an indoor distribution system through a third port;
the near-end frequency shifter performs frequency shifting processing on the second downlink MIMO signal to obtain a first frequency shifting signal, and the first frequency shifting signal is input into the indoor distribution system through the third port;
the remote frequency shifter acquires the first frequency shift signal from the indoor distribution system through a fourth port, performs frequency shift processing on the first frequency shift signal to obtain the second downlink MIMO signal, amplifies the power of the second downlink MIMO signal, and inputs the second downlink MIMO signal into the indoor distribution system through the fourth port;
the remote frequency shifter acquires a second uplink MIMO signal from the indoor distribution system through the fourth port, performs frequency shifting processing on the second uplink MIMO signal to obtain a second frequency shifting signal, and inputs the second frequency shifting signal into the indoor distribution system through the fourth port;
the near-end frequency shifter acquires a first uplink MIMO signal and the second frequency shift signal from the indoor distribution system through the third port;
the near-end frequency shifter transmits the first uplink MIMO signal to a network access device through the first port;
the near-end frequency shifter performs frequency shifting processing on the second frequency-shifted signal to obtain the second uplink MIMO signal, and sends the second uplink MIMO signal to the network access equipment through the second port;
the remote frequency shifter performs frequency shift processing on the first frequency shift signal to obtain the second downlink MIMO signal, and inputs the second downlink MIMO signal to the indoor distribution system through a fourth port after power amplification, where the method includes:
the second circulator sends the first frequency shift signal received by the fourth port to a power divider;
the power divider sends the first frequency shift signal to a third frequency shifter;
a third frequency shifter performs frequency shift processing on the first frequency shift signal to obtain the second downlink MIMO signal;
the power amplifier performs power amplification on the second downlink MIMO signal and sends an output signal to the second circulator;
the second circulator inputs the output signal of the power amplifier into the indoor distribution system through the fourth port;
the remote frequency shifter performs frequency shift processing on the second uplink MIMO signal to obtain a second frequency shifted signal, and inputs the second frequency shifted signal to the indoor distribution system through the fourth port, where the remote frequency shifter further includes:
the second circulator sends the second uplink MIMO signal received by the fourth port to the power divider;
the power divider transmits the second uplink MIMO signal to a fourth frequency shifter;
the fourth frequency shifter shifts the frequency of the second uplink MIMO signal to obtain a second frequency-shifted signal;
and the second circulator inputs the second frequency shift signal output by the fourth frequency shifter into the indoor distribution system through the fourth port.
5. The method of claim 4, wherein the near-end frequency shifter frequency-shifting the second downlink MIMO signal to obtain a first frequency-shifted signal comprises:
the first circulator sends the second downlink MIMO signal received by the second port to a first frequency shifter;
and the first frequency shifter performs frequency shifting processing on the second downlink MIMO signal to obtain a first frequency-shifted signal, and the first frequency-shifted signal is input into the indoor distribution system through the third port.
6. The method of claim 5, wherein the frequency shifting the second frequency shifted signal by the near-end frequency shifter to obtain the second uplink MIMO signal comprises:
the second frequency shifter shifts the frequency of the second frequency-shifted signal received by the third port from the indoor distribution system to obtain the second uplink MIMO signal;
and the first circulator sends the second uplink MIMO signal output by the second frequency shifter to the network access equipment through the second port.
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