CN117335929A - Satellite ground station multipath concurrency code modulation communication terminal and communication method - Google Patents
Satellite ground station multipath concurrency code modulation communication terminal and communication method Download PDFInfo
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- 238000007493 shaping process Methods 0.000 claims description 19
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18513—Transmission in a satellite or space-based system
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
- H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
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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
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel 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
- H04L1/004—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
- H04L1/0057—Block codes
Abstract
The invention provides a satellite ground station multipath concurrent code modulation communication terminal and a communication method, wherein the terminal comprises a parameter setting monitoring module, a network data receiving module, a data inner code and channel modulation module, a signal forming filtering output module and a plurality of data processing and outer code modules, wherein the parameter setting monitoring module is used for configuring user data code modulation parameters comprising user terminal identification, user data length and code pattern information for each data processing and outer code module; the network data receiving module is used for receiving user data from a plurality of user terminals and distributing the user data to the corresponding data processing and outer coding module; the data processing and outer coding module is used for outer coding the user data according to the coding code type information and the user data length, and then the coded data is complemented to the length agreed by the system to form an outer coding data frame, so that the transmission of different codes and data lengths of multiple paths of users in one communication channel is realized.
Description
Technical Field
The invention relates to the technical field of satellite communication, in particular to a satellite ground station multipath concurrency code modulation communication terminal and a communication method.
Background
With the development of satellite communication technology, the requirement of simultaneous transmission of multi-user data becomes more and more realistic, and particularly, the multi-user data is uploaded to a communication satellite through a ground station at the same time, and then distributed to each user terminal by the communication satellite.
The usual processing method is as follows: the multi-user data is transmitted using FDMA (Frequency Division Multiple Access ) or TDMA (Time Division Multiple Access, time division multiple access) mode, where multiple communication terminals are required to encode and modulate the user data, respectively, or the time slicing technique is used to uniformly modulate and transmit each user data with a specific time slot.
Although the FDMA mode can realize modulation transmission of multi-user data with different codes and different lengths, each user needs to occupy a certain bandwidth and a single terminal, and the modulated signal of each terminal needs to be synthesized to be amplified and transmitted finally.
The TDMA method requires strict time slot synchronization control by the user receiving end and the satellite ground station, and cannot meet the requirement of the user for encoding different data.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a satellite ground station multi-channel concurrent code modulation communication terminal and a communication method, which can realize the transmission of different codes and data lengths of multiple users in one communication channel.
In order to solve the technical problem, a first aspect of the present invention provides a satellite ground station multi-channel concurrent code modulation communication terminal, which comprises a parameter setting monitoring module, a network data receiving module, a data inner code and channel modulation module, a signal shaping filtering output module and a plurality of data processing and outer code modules, wherein,
the parameter setting monitoring module is used for configuring user data coding modulation parameters for each data processing and outer coding module, wherein the user data coding modulation parameters comprise user terminal identification, user data length and coding pattern information;
the network data receiving module is used for receiving user data to be transmitted from a plurality of user terminals and distributing the user data to the corresponding data processing and outer coding module according to the user terminal identification;
the data processing and outer coding module performs outer coding on a certain path of received user data according to coding code pattern information and user data length, complements the coded data length to the length agreed by the system to obtain the path of user coded data, encapsulates an identification field containing the path of user coded data, a user terminal identification, a user data length identification and a frame synchronization identification into an outer coded data frame, and sends the outer coded data frame to the outer coded data caching and sending module for subsequent processing;
the data inner coding and channel modulation module receives the outer coding data frames of each path of users sent by the outer coding data caching and sending module, and carries out inner coding and baseband modulation to form baseband signals;
and the signal shaping filtering output module is used for carrying out signal shaping filtering on the baseband signal and outputting the baseband signal.
Optionally, the network data receiving module includes:
a receiving unit for receiving user data to be transmitted from a plurality of user terminals;
the matching unit is used for matching the user terminal identifier corresponding to the user data with the user terminal identifier corresponding to the data processing and outer coding module, and determining the data processing and outer coding module for processing the user data;
and the sending unit is used for sending the user data to the corresponding data processing and outer coding module.
Optionally, the terminal is provided with a plurality of data processing and outer coding modules, and each data processing and outer coding module includes:
the data coding unit is used for performing outer coding on the user data according to the coding pattern information, and complementing the length of the coded data to the length agreed by the system to obtain the coded data of a certain user;
and the data packet processing unit is used for packaging the data comprising the user coding data, the user terminal identification, the user data length and the frame synchronization identification together to form an outer coding data frame of the user.
Optionally, the data encoding unit is further configured to: in the case where the length of the user encoded data is less than the length of the system contract data, the length of the encoded data is padded to the length of the system contract using the '01' sequence.
Optionally, the outer code data buffering and sending module is configured to: and receiving the outer coding data frames of each path of users sent by the data processing and outer coding module, and sending all the outer coding data frames to the data inner coding and channel modulation module according to the first-in first-out principle.
A second aspect of the present invention provides a satellite ground station multi-channel concurrent code modulation communication method, which is performed by the satellite ground station multi-channel concurrent code modulation communication terminal of the first aspect, and includes:
the parameter setting monitoring module configures user data coding modulation parameters for each data processing and outer coding module in advance, wherein the user data coding modulation parameters comprise user terminal identification, user data length and coding code type information;
the network data receiving module receives user data to be transmitted from a plurality of user terminals, and distributes the user data to the corresponding data processing and outer coding module according to the user terminal identification;
the data processing and outer coding module performs outer coding on the user data according to the coding pattern information and complements the data length to the system appointed length to obtain user coding data, and encapsulates the data comprising the user coding data, the user terminal identification, the user data length and the frame synchronization identification into an outer coding data frame;
the data inner coding and channel modulation module carries out inner code coding on the received outer coding data frame, and carries out baseband modulation on the data stream after inner coding to form a baseband signal;
the signal shaping filter output module carries out signal shaping filter on the baseband signal and outputs the baseband signal.
Optionally, the network data receiving module receives user data to be transmitted from a plurality of user terminals, and distributes each user data to a corresponding data processing and outer coding module according to the user terminal identifier, where the data processing and outer coding module includes:
receiving user data to be transmitted from a plurality of user terminals;
matching a user terminal identifier corresponding to the user data with a user terminal identifier corresponding to the data processing and outer coding module, and determining the data processing and outer coding module for processing the user data;
and transmitting the user data to the corresponding data processing and outer coding module.
Optionally, the data processing and outer coding module performs outer coding and encoded data length filling on the user data according to the encoded code pattern information and the user data length to obtain encoded data, and encapsulates data including the encoded data, the user terminal identifier, the user data length and the frame synchronization identifier into an outer coded data frame, including:
externally encoding the user data according to the encoding code type information, and then supplementing the encoded data to the system appointed length by using a '01' sequence according to the system appointment to form encoded data;
and encapsulating the data comprising the coded data, the user terminal identification, the user data length and the frame synchronization identification together to form an outer coded data frame.
Optionally, the data inner coding and channel modulation module performs inner code coding on the outer coding data frame, and performs baseband modulation on the inner coding data stream to form a baseband signal.
The invention of the embodiment has the following beneficial effects:
the method comprises the steps of configuring user data coding modulation parameters for each data processing and outer coding module in advance to establish a mapping relation between a user terminal and the data processing and outer coding module, and determining data processing rules to be observed when each outer coding module processes user data; when the user terminal data is transmitted, the corresponding data processing and external coding modules are matched according to the user terminal identification, then the user data is coded and the length is complemented according to the data processing rule, so that the data coding modulation transmission of multiple paths of user data, different codes and different data lengths is realized, and the personalized data transmission requirement of the user is met.
In addition, the user data is transmitted through a single channel link, so that the defects of high complexity, large required equipment set, high cost and the like of a system caused by strict time slot control required by TDMA and FDMA multi-band multi-channel communication system are avoided, the number of data transmission terminals and the complexity of the whole system are greatly reduced, and the reliable transmission of data is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is apparent that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 schematically illustrates a block diagram of a satellite ground station multi-channel concurrent code modulation communication terminal according to one embodiment of the present application.
Fig. 2 schematically illustrates a flowchart of a satellite ground station multi-channel concurrent code modulation communication method according to an embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the aspects of the application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
Referring to fig. 1, the communication terminal includes a parameter setting monitoring module, a network data receiving module, a data inner coding and channel modulating module, a signal forming filtering output module and a plurality of data processing and outer coding modules. The parameter setting monitoring module is used for: and configuring user data coding modulation parameters for each data processing and outer coding module, wherein the user data coding modulation parameters comprise user terminal identification, user data length and coding code type information. The network data receiving module is used for: and receiving user data to be transmitted from a plurality of user terminals, and distributing each user data to a corresponding data processing and outer coding module according to the user terminal identification. The data processing and outer coding module is used for: and performing outer coding and data length filling on the user data according to the coding pattern information and the user data length to obtain coded data, and packaging the data comprising the coded data, the user terminal identification, the user data length and the frame synchronization identification into an outer coding data frame. The outer coding data buffer and sending module is used for: and buffering the outer coding data frames, and continuously transmitting the outer coding data frames to a data inner coding and channel modulation module according to the first-in first-out principle. The data inner coding and channel modulation module is used for: and carrying out inner code encoding on the received outer encoded data frame, and carrying out baseband modulation on the obtained encoded stream data to form a baseband signal. The signal shaping filter output module is used for: and performing signal shaping filtering on the baseband signal and outputting the signal.
The parameter setting monitoring module is used for configuring working parameters of the whole terminal, and generally, working parameters of other modules except the data processing and external coding module on the terminal are fixed and do not need to be set, so the parameter setting monitoring module is mainly used for setting parameters of each data processing and external coding module, and the parameters comprise user terminal identification, user data length, coding/uncoding options, coding mode options such as BCH coding/RS coding/LDPC coding and the like. After the parameter setting monitoring module configures parameters for each data processing and outer coding module, user data from the user terminal is distributed to the corresponding data processing and outer coding module, the data processing and outer coding module performs outer coding and data length complement on the user data according to the set parameters, and then other modules perform forwarding, inner coding, baseband modulation, filtering and other processing and output. The network data receiving module, the data processing and outer coding module, the data inner coding and channel modulation module and the signal forming and filtering output module are sequentially communicated to form a single-channel link, and in the user data transmission process, the data processing and outer coding module processes user data firstly based on locally configured coding code pattern information and data length requirements and then transmits the user data to the next module, so that data coding modulation transmission of multiple paths of user data, different codes and different data lengths can be realized, and the user personalized data transmission requirements are met; in addition, the communication terminal realizes the transmission of different codes and length data of multiple paths of user data in one communication channel, greatly reduces the complexity of the system and improves the reliability of data transmission.
In one possible implementation, the network data receiving module may include a receiving unit, a matching unit, and a transmitting unit. The receiving unit is used for receiving user data to be transmitted from a plurality of user terminals; the matching unit is used for matching the user terminal identifier corresponding to the user data with the user terminal identifier corresponding to the data processing and outer coding module, and determining the data processing and outer coding module for processing the user data; the transmitting unit is used for transmitting the user data to the corresponding data processing and outer coding module.
In one possible implementation manner, the data processing and outer coding module may include a data coding unit and a data packet processing unit, where the data coding unit is configured to outer code user data according to coding pattern information, and supplement the coded data length to a length agreed by the system by using a '01' sequence, so as to obtain coded data of a certain user; and the data packet processing unit is used for packaging the data comprising the user coding data, the user terminal identification, the user data length and the frame synchronization identification together to form an outer coding data frame of the user.
The present embodiment provides a satellite ground station multipath concurrent code modulation communication method, please refer to fig. 2, which includes the following steps:
s201, a parameter setting monitoring module configures user data coding modulation parameters for each data processing and outer coding module in advance, wherein the user data coding modulation parameters comprise user terminal identification, user data length and coding code type information.
The user data code modulation parameters are in one-to-one correspondence with the user terminals, and indicate information such as data outer codes and parameters required for processing the user data sent by the user terminals, including but not limited to user terminal identification, user data length, coding/non-coding options, BCH coding/RS coding/LDPC coding options, and the like. The user data code modulation parameters corresponding to the user terminal are pre-configured in the data processing and outer coding module, and the data processing and outer coding module can process the data according to the requirements after receiving the user data, so as to meet the personalized requirements.
And S203, the network data receiving module receives user data to be transmitted from a plurality of user terminals, and distributes the user data to the corresponding data processing and outer coding module according to the user terminal identification.
Step S203 is performed by the network data receiving module, and may specifically include: receiving user data to be transmitted from a plurality of user terminals; matching a user terminal identifier corresponding to the user data with a user terminal identifier corresponding to the data processing and outer coding module, and determining the data processing and outer coding module for processing the user data; and transmitting the user data to the corresponding data processing and outer coding module.
The user terminal identifier corresponding to the user data refers to a user terminal identifier of a user terminal for transmitting the user data; the user terminal identifier corresponding to the data processing and outer coding module is the user terminal identifier contained in the user data coding modulation parameter set by the data processing and outer coding module. The invention concept of the present disclosure is that the individuation requirement of the user terminal data transmission is firstly set in the data processing and outer coding module in a parameter configuration mode, namely, the corresponding relation between the user terminal and the data processing and outer coding module is pre-established, and the data processing and outer coding module which can process the data according to the individuation requirement of the user terminal can be inquired through the user terminal identification, thereby meeting the individuation data processing requirement of the user terminal.
And matching the user terminal identifier corresponding to the user data with the user terminal identifier corresponding to the data processing and outer coding module, if the user terminal identifier corresponding to the user data is the same as the user terminal identifier corresponding to the data processing and outer coding module, determining that the data processing and outer coding module can process the user data according to the user terminal requirement, sending the user data to the data processing and outer coding module, and if the user terminal identifier corresponding to the user data is different from the user terminal identifier corresponding to the data processing and outer coding module, matching the user terminal identifier corresponding to the user data with the user terminal identifier corresponding to the next data processing and outer coding module until the matched data processing and outer coding module is found. If the user terminal identification corresponding to the user data is different from the user terminal identification corresponding to any one of the data processing and outer coding modules in the communication terminal, the user terminal is not in corresponding relation with the data processing and outer coding modules, and the user data is discarded.
And S205, the data processing and outer coding module performs outer coding and data length complement on the user data according to the coding pattern information and the user data length to obtain the user coding data.
Step S205 may specifically include: externally encoding the user data according to the encoding code type information, and then supplementing the encoded data to the length agreed by the system by using a '01' sequence according to the length of the user data to obtain the user encoded data; and then the data packet processing unit encapsulates the data comprising the user coding data, the user terminal identification, the user data length and the frame synchronization identification together to form an outer coding data frame of the user.
S207, the data inner coding and channel modulation module carries out inner code coding on the received outer coding data frame, and the channel modulator carries out baseband modulation on the coded data stream to form a baseband signal.
S209, the signal shaping filtering output module carries out signal shaping filtering on the baseband signal and outputs the baseband signal.
Specifically, the signal shaping and filtering output module carries out shaping and filtering on the baseband signal carrying the coded data stream according to the set shaping coefficient, and the baseband signal is output by the baseband signal interface.
So far, all user data to be transmitted finish the outer coding of the data according to the respective requirements, and perform inner coding and modulation output according to the unified design of the system, thereby realizing the single channel transmission of multiple users, different codes and different data lengths. The embodiment sends the signal to the satellite through a single microwave channel link for receiving processing; in the absence of data transmission, a filler frame is transmitted to maintain the communication link. Further, the data distribution of multiple users is processed by the satellite receiving terminal and sent to the corresponding user terminal according to the user terminal identification.
In one possible implementation manner, before step S207, the method may further include: the outer coding data buffer and transmitting module receives the outer coding data frame transmitted by the data processing and outer coding module, and transmits the outer coding data frame to the data inner coding and channel modulating module according to the first-in first-out principle.
The satellite ground station multipath concurrency code modulation communication terminal designed by the scheme realizes the functions of single-channel link transmission of user data with multiple users, different codes and different data lengths through a software technology, and avoids the complexity and high cost of a system caused by using FDMA and TDMA communication systems. When the communication terminal provided by the embodiment is used, the baseband transmission rate is not lower than the sum of all user data transmission rates, so that the data real-time transmission can be realized.
The invention discloses a terminal, the hardware is a set of computer system, which comprises an operating system, a software development platform, a data coding and modulating board and a baseband shaping and filtering output circuit. The system comprises a function module, a parameter setting monitoring module, a network data receiving module, a data processing and outer coding module, an outer coding data caching and transmitting module, a data inner coding and channel modulating module and a signal shaping filtering output module.
Based on the same inventive concept, embodiments of the present disclosure provide a computer storage medium, the computer storage medium including: computer program code which, when run on a computer, causes the computer to perform a satellite ground station multi-path concurrent code modulation communication method as any of the preceding discussion. Because the principle of the computer storage medium for solving the problem is similar to that of the satellite ground station multipath concurrent code modulation communication method, the implementation of the computer storage medium can refer to the implementation of the method, and the repetition is omitted.
In a specific implementation, the computer storage medium may include: a universal serial bus flash disk (USB, universalSerialBusFlashDrive), a removable hard disk, a Read-only memory (ROM), a random access memory (RAM, randomAccessMemory), a magnetic disk or an optical disk, or other various storage media capable of storing program codes.
Based on the same inventive concept, the disclosed embodiments also provide a computer program product comprising: computer program code which, when run on a computer, causes the computer to perform a satellite ground station multi-path concurrent code modulation communication method as any one of the preceding discussion. Since the principle of the solution of the problem of the computer program product is similar to that of the satellite ground station multipath concurrent code modulation communication method, the implementation of the computer program product can be referred to as implementation of the method, and the repetition is omitted.
The computer program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. A satellite ground station multi-channel concurrent code modulation communication terminal is characterized by comprising a parameter setting monitoring module, a network data receiving module, a data inner code and channel modulation module, a signal shaping filtering output module and a plurality of data processing and outer code modules, wherein,
the parameter setting monitoring module is used for configuring user data coding modulation parameters for each data processing and outer coding module, wherein the user data coding modulation parameters comprise user terminal identification, user data length and coding pattern information;
the network data receiving module is used for receiving user data to be transmitted from a plurality of user terminals and distributing the user data to the corresponding data processing and outer coding module according to the user terminal identification;
the data processing and outer coding module performs outer coding on a certain path of received user data according to coding code pattern information and user data length, complements the coded data length to the length agreed by the system to obtain the path of user coded data, encapsulates an identification field containing the path of user coded data, a user terminal identification, a user data length identification and a frame synchronization identification into an outer coded data frame, and sends the outer coded data frame to the outer coded data caching and sending module for subsequent processing;
the data inner coding and channel modulation module receives the outer coding data frames of each path of users sent by the outer coding data caching and sending module, and carries out inner coding and baseband modulation to form baseband signals;
and the signal shaping filtering output module is used for carrying out signal shaping filtering on the baseband signal and outputting the baseband signal.
2. A terminal according to claim 1, characterized in that the network data receiving module comprises:
a receiving unit for receiving user data to be transmitted from a plurality of user terminals;
the matching unit is used for matching the user terminal identifier corresponding to the user data with the user terminal identifier corresponding to the data processing and outer coding module, and determining the data processing and outer coding module for processing the user data;
and the sending unit is used for sending the user data to the corresponding data processing and outer coding module.
3. A terminal according to claim 1, characterized in that the terminal is provided with a plurality of data processing and outer coding modules, each data processing and outer coding module comprising:
the data coding unit is used for performing outer coding on the user data according to the coding pattern information, and complementing the length of the coded data to the length agreed by the system to obtain the coded data of a certain user;
and the data packet processing unit is used for packaging the data comprising the user coding data, the user terminal identification, the user data length and the frame synchronization identification together to form an outer coding data frame of the user.
4. A terminal according to claim 3, characterized in that,
the data encoding unit is further configured to: in the case where the length of the user encoded data is less than the length of the system contract data, the length of the encoded data is padded to the length of the system contract using the '01' sequence.
5. The terminal according to claim 1, wherein,
the outer coding data caching and sending module is used for: and receiving the outer coding data frames of each path of users sent by the data processing and outer coding module, and sending all the outer coding data frames to the data inner coding and channel modulation module according to the first-in first-out principle.
6. A satellite ground station multi-channel concurrent code modulation communication method, the method being performed by the satellite ground station multi-channel concurrent code modulation communication terminal of any one of claims 1-5, comprising:
the parameter setting monitoring module configures user data coding modulation parameters for each data processing and outer coding module in advance, wherein the user data coding modulation parameters comprise user terminal identification, user data length and coding code type information;
the network data receiving module receives user data to be transmitted from a plurality of user terminals, and distributes the user data to the corresponding data processing and outer coding module according to the user terminal identification;
the data processing and outer coding module performs outer coding on the user data according to the coding pattern information and complements the data length to the system appointed length to obtain user coding data, and encapsulates the data comprising the user coding data, the user terminal identification, the user data length and the frame synchronization identification into an outer coding data frame;
the data inner coding and channel modulation module carries out inner code coding on the received outer coding data frame, and carries out baseband modulation on the data stream after inner coding to form a baseband signal;
the signal shaping filter output module carries out signal shaping filter on the baseband signal and outputs the baseband signal.
7. The method of claim 6, wherein the network data receiving module receives user data to be transmitted from a plurality of user terminals, and distributing each user data to a corresponding data processing and outer coding module based on the user terminal identification comprises:
receiving user data to be transmitted from a plurality of user terminals;
matching a user terminal identifier corresponding to the user data with a user terminal identifier corresponding to the data processing and outer coding module, and determining the data processing and outer coding module for processing the user data;
and transmitting the user data to the corresponding data processing and outer coding module.
8. The method of claim 6, wherein the data processing and outer coding module performs outer coding and encoded data length padding on the user data according to the encoded pattern information and the user data length to obtain encoded data, and encapsulates data including the encoded data, the user terminal identification, the user data length, and the frame synchronization identification into an outer coded data frame, comprising:
externally encoding the user data according to the encoding code type information, and then supplementing the encoded data to the system appointed length by using a '01' sequence according to the system appointment to form encoded data;
and encapsulating the data comprising the coded data, the user terminal identification, the user data length and the frame synchronization identification together to form an outer coded data frame.
9. The method of claim 6, wherein the data inner coding and channel modulation module inner codes the outer coded data frame and baseband modulates the inner coded data stream to form the baseband signal.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117975A (en) * | 2007-08-20 | 2013-05-22 | 瑞登有限责任公司 | System of compensating MU-MAS communications and dynamically adapting communication characteristics of MU-MAS communication system |
| CN104917560A (en) * | 2015-05-12 | 2015-09-16 | 北京九天利建信息技术有限公司 | Beidou communication satellite multi-beam and multi-user receiving monitoring device and method |
| US20170141906A1 (en) * | 2014-05-20 | 2017-05-18 | Satixfy Israel Ltd. | Method and system for satellite communication |
| CN112532304A (en) * | 2020-11-30 | 2021-03-19 | 北京数码视讯技术有限公司 | Multimedia transmission system and method under satellite condition |
| CN113783597A (en) * | 2021-08-10 | 2021-12-10 | 中国科学院国家空间科学中心 | Variable coding modulation data transmission framing system and framing method for near-earth remote sensing satellite |
| CN113922860A (en) * | 2021-09-14 | 2022-01-11 | 中国科学院国家空间科学中心 | Satellite-ground measurement, operation and control integrated baseband processing system for small satellite in medium and low orbit |
| CN114204943A (en) * | 2020-09-18 | 2022-03-18 | 华为技术有限公司 | Encoding method and apparatus |
| CN114503573A (en) * | 2019-03-20 | 2022-05-13 | 威诺瓦国际有限公司 | Low complexity enhanced video coding |
| CN114710234A (en) * | 2022-01-12 | 2022-07-05 | 中国电子科技集团公司第十研究所 | Multi-user data multiplexing super-frame coding modulation method |
-
2023
- 2023-12-01 CN CN202311631997.6A patent/CN117335929B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117975A (en) * | 2007-08-20 | 2013-05-22 | 瑞登有限责任公司 | System of compensating MU-MAS communications and dynamically adapting communication characteristics of MU-MAS communication system |
| US20170141906A1 (en) * | 2014-05-20 | 2017-05-18 | Satixfy Israel Ltd. | Method and system for satellite communication |
| CN104917560A (en) * | 2015-05-12 | 2015-09-16 | 北京九天利建信息技术有限公司 | Beidou communication satellite multi-beam and multi-user receiving monitoring device and method |
| CN114503573A (en) * | 2019-03-20 | 2022-05-13 | 威诺瓦国际有限公司 | Low complexity enhanced video coding |
| CN114204943A (en) * | 2020-09-18 | 2022-03-18 | 华为技术有限公司 | Encoding method and apparatus |
| CN112532304A (en) * | 2020-11-30 | 2021-03-19 | 北京数码视讯技术有限公司 | Multimedia transmission system and method under satellite condition |
| CN113783597A (en) * | 2021-08-10 | 2021-12-10 | 中国科学院国家空间科学中心 | Variable coding modulation data transmission framing system and framing method for near-earth remote sensing satellite |
| CN113922860A (en) * | 2021-09-14 | 2022-01-11 | 中国科学院国家空间科学中心 | Satellite-ground measurement, operation and control integrated baseband processing system for small satellite in medium and low orbit |
| CN114710234A (en) * | 2022-01-12 | 2022-07-05 | 中国电子科技集团公司第十研究所 | Multi-user data multiplexing super-frame coding modulation method |
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