CN109474895B - Data transmission method and apparatus for digital broadcasting system - Google Patents
Data transmission method and apparatus for digital broadcasting system Download PDFInfo
- Publication number
- CN109474895B CN109474895B CN201710801554.5A CN201710801554A CN109474895B CN 109474895 B CN109474895 B CN 109474895B CN 201710801554 A CN201710801554 A CN 201710801554A CN 109474895 B CN109474895 B CN 109474895B
- Authority
- CN
- China
- Prior art keywords
- data
- physical
- frame
- data block
- pipeline
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- 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
- H04L1/0071—Use of interleaving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The invention discloses a data transmission method and equipment of a digital broadcasting system. The method comprises the following steps: the physical signal frame of the digital broadcasting system comprises a preamble signal, a plurality of frame header data blocks and a plurality of frame body data blocks; transmitting an information parameter about a physical signal frame data block type in the preamble signal; a physical signaling pipeline for transmitting signaling data and a physical fast pipeline for transmitting fast service data are carried in the frame header data block; carrying a physical data pipe for transmitting service data in the frame body data block; the code rate of the rapid service data transmitted by the physical rapid pipeline is lower than that of the service data transmitted by the physical data pipeline; only the frame volume data block is subjected to intra-frame interleaving processing. The data transmission method and the data transmission equipment of the digital broadcasting system can flexibly transmit data according to the requirements of the carried service on the real-time performance and the service quality.
Description
Technical Field
The present invention relates to the field of digital broadcasting technologies, and in particular, to a data transmission method and device for a digital broadcasting system.
Background
Digital broadcasting has the greatest characteristic of broadcastability except wide coverage and large program capacity, and has an important position in the construction of national information infrastructure, the realization of general services and the national information security strategy as an important component of the information communication industry.
In broadcasting systems such as radio broadcasting, terrestrial handheld broadcasting, satellite broadcasting, etc., services are divided into various types in order to provide differentiated services. All services in the system are multiplexed for transmission in the same broadcast physical signal frame, with different services providing different quality of service (QOS). Therefore, there is a need to provide a technical solution for flexibly performing digital broadcast signal transmission according to the requirements of the carried service on real-time performance and quality of service.
Disclosure of Invention
An object of the present invention is to provide a data transmission scheme for a single carrier digital broadcasting system, which can flexibly perform data transmission according to the requirements of the carried service on real-time performance and service quality.
According to a first aspect of the present invention, there is provided a data transmission method of a digital broadcasting system, a physical signal frame of the digital broadcasting system including a preamble, a plurality of frame header data blocks, and a plurality of frame body data blocks;
transmitting an information parameter about a physical signal frame data block type in the preamble signal;
a physical signaling pipeline for transmitting signaling data and a physical fast pipeline for transmitting fast service data are carried in the frame header data block;
carrying a physical data pipe for transmitting service data in the frame body data block; the code rate of the rapid service data transmitted by the physical rapid pipeline is lower than that of the service data transmitted by the physical data pipeline; only carrying out intra-frame interleaving processing on the frame volume data block;
the signaling data transmitted in the physical signaling pipeline comprises signaling information parameters of the physical signaling pipeline, signaling information parameters of the physical data pipeline and signaling information parameters of the physical fast pipeline;
the preamble signal comprises P pilot symbols and a plurality of main body symbols, and the frame header data block and the frame body data block both comprise P pilot symbols and data symbols.
Optionally, the data block type is used to indicate the following parameters of the physical signal frame: the number of data blocks of the physical signal frame, the number of frame header data blocks, the length of the data blocks, the number of pilot symbols and data groups contained in each data block, and the number of rows and columns of an interleaving matrix of intraframe interleaving.
Optionally, the system receiving end may perform single carrier frequency domain equalization processing on the main symbol of the preamble signal and the P pilot symbols of the first frame header data block as a processing unit.
Optionally, the system receiving end may perform single carrier frequency domain equalization processing on the data symbol of the previous data block and the P pilot symbols of the next data block as a processing unit.
Optionally, the system receiving end may use P data symbols of the last frame body data block of the previous physical signal frame and P pilot symbols of the preamble signal of the next physical signal frame as a processing unit to perform single carrier frequency domain equalization processing.
Optionally, the digital broadcasting system has a plurality of data block types, each data block type defining a different data block parameter; the data block parameters include the total number of data blocks contained in the physical signal frame, the number of frame header data blocks contained in the physical signal frame, the length of each data block, the number of pilot symbols contained in each data block, and the number of data groups contained in each data block.
Optionally, the intra-frame interleaving processing on the frame body data block takes the data group as a basic operation unit.
Optionally, the row and column parameters of the interleaver used for intra-frame interleaving are different for different digital broadcast system bandwidths and different data block types.
According to a second aspect of the present invention, there is provided a data transmission apparatus of a digital broadcasting system, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a data transmission method of the digital broadcasting system as described in any one of the preceding claims when executing the program.
The data transmission method and the data transmission equipment of the digital broadcasting system can flexibly transmit data according to the requirements of the carried service on the real-time performance and the service quality.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, 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 invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a block diagram showing an example of a hardware configuration of a data transmission device that can be used to implement an embodiment of the present invention.
Fig. 2 shows a schematic structural diagram of a physical signal frame according to an embodiment of the present invention.
Fig. 3 shows a schematic structural diagram of a physical signal frame according to an embodiment of the present invention.
Fig. 4 is a schematic diagram illustrating a frequency domain equalization process provided by an embodiment of the present invention.
Fig. 5 is a schematic diagram illustrating a frequency domain equalization process provided by an embodiment of the present invention.
Fig. 6 is a schematic diagram illustrating a frequency domain equalization process provided by an embodiment of the present invention.
Fig. 7 is a schematic diagram illustrating an intra-frame pilot generation method according to an embodiment of the present invention.
Fig. 8(a) is a schematic diagram of a write processing method of intra-frame interleaving according to an embodiment of the present invention.
Fig. 8(b) is a schematic diagram of a read processing method of intra-frame interleaving according to an embodiment of the present invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
The data transmission method and the data transmission equipment of the digital broadcasting system provided by the embodiment of the invention are suitable for a single-carrier digital broadcasting system.
Fig. 1 is a block diagram showing an example of a hardware configuration of a data transmission device that can be used to implement an embodiment of the present invention.
The data transmission device 1000 may be an electronic device such as a computer or a server. As shown in fig. 1, the data transmission apparatus 1000 may include a processor 1010, a memory 1020, an interface device 1030, a communication device 1040, a display device 1050, an input device 1060, a speaker 1070, a microphone 1080, and the like. The processor 1010 may be a central processing unit CPU, a microprocessor MCU, or the like. The memory 1020 includes, for example, a ROM (read only memory), a RAM (random access memory), a nonvolatile memory such as a hard disk, and the like. The interface device 1030 includes, for example, a USB interface, a headphone interface, a bluetooth interface, and the like. The communication device 1040 can perform wired or wireless communication, for example. The display device 1050 is, for example, a liquid crystal display panel, a touch panel, or the like. The input device 1060 may include, for example, a touch screen, a keyboard, and the like. A user can input/output voice information through the speaker 1070 and the microphone 1080.
The data transmission apparatus 1000 shown in fig. 1 is illustrative only and is not intended to limit the present invention, its application or uses in any way. In an embodiment of the present invention, the memory 1020 of the data transmission device 1000 is used for storing a computer program, and the processor 1010 executes the computer program to implement the data transmission method of the digital broadcasting system according to any one of the embodiments of the present invention.
It should be understood by those skilled in the art that although a plurality of devices are shown for the data transmission apparatus 1000 in fig. 1, the present invention may only relate to some of the devices, for example, the data transmission apparatus 1000 only relates to the processor 1010 and the storage device 1020, etc. Skilled artisans may design the program instructions based on the teachings of the present disclosure, and how the processor executes the program instructions is well known in the art and will not be described in detail herein.
The embodiment of the invention provides a data transmission method of a digital broadcasting system, wherein a physical signal frame of the digital broadcasting system comprises a preamble signal, a plurality of frame header data blocks and a plurality of frame body data blocks;
transmitting an information parameter about a physical signal frame data block type in the preamble signal;
a physical signaling pipeline for transmitting signaling data and a physical fast pipeline for transmitting fast service data are carried in the frame header data block;
carrying a physical data pipe for transmitting service data in the frame body data block; the code rate of the rapid service data transmitted by the physical rapid pipeline is lower than that of the service data transmitted by the physical data pipeline; only carrying out intra-frame interleaving processing on the frame volume data block;
the signaling data transmitted in the physical signaling pipeline comprises signaling information parameters of the physical signaling pipeline, signaling information parameters of the physical data pipeline and signaling information parameters of the physical fast pipeline;
the preamble signal comprises P pilot symbols and a plurality of main body symbols, and the frame header data block and the frame body data block both comprise P pilot symbols and data symbols.
The digital broadcasting system has a plurality of data block types, each data block type defining different data block parameters; the data block parameters include the total number of data blocks contained in the physical signal frame, the number of frame header data blocks contained in the physical signal frame, the length of each data block, the number of pilot symbols contained in each data block, and the number of data groups contained in each data block.
The row and column parameters of the interleaver adopted by the intraframe interleaving are different aiming at different digital broadcasting system bandwidths and different data block types.
Wherein the data block type is used to indicate the following parameters of a physical signal frame: the number of data blocks of the physical signal frame, the number of frame header data blocks, the length of the data blocks, the number of pilot symbols and data groups contained in each data block, and the number of rows and columns of an interleaving matrix of intraframe interleaving.
Referring to fig. 2 and 3, a physical signal frame structure of the digital broadcasting system according to an embodiment of the present invention is illustrated. Each physical signal frame is composed of 1 preamble and N data blocks. The first M data blocks are frame header data blocks for carrying physical signaling pipeline data and physical fast pipeline data, and the pipeline data is FEC encoded with low code rate and short code length without interframe interleaving, so that the transmission delay of the system is reduced and the real-time requirement of the system is ensured. The rest N-M data blocks are frame data blocks for bearing physical data pipeline data, and the modulation code rate and the current physical data pipeline inter-frame interleaving depth can be flexibly configured according to the requirements of the service borne by the physical data pipeline on the real-time performance and the QOS. Each data block in the frame is composed of an intra-frame pilot frequency and a data group, and each data group comprises S data symbols.
A plurality of data block types (the combination of the pilot symbol length P and the data group number B contained in each data block) are provided in the frame structure, so that the digital broadcasting system is suitable for various application environments, such as high-speed mobile reception, medium-low speed mobile reception, fixed environment reception, long-channel delay environment reception and the like. A suitable data block type can be selected for use according to the specific application environment of the system, so that the system can reduce the overhead of pilot symbols as much as possible under the condition of resisting the current environment channel delay and Doppler frequency shift, and the throughput of payload data is improved.
Referring to fig. 3, the preamble signal and the periodic pilot symbols in the data blocks in the frame structure can assist the receiving end to perform conventional synchronization and channel estimation, and can also change the receiving equalization processing of the preamble signal and each data block into frequency domain equalization similar to that commonly used in the multi-carrier OFDM system, and perform signal processing more simply and efficiently by using methods such as Fast Fourier Transform (FFT).
Referring to fig. 4, preamble processing according to an embodiment of the present invention is illustrated: and taking L main body symbols in the preamble signal and P pilot symbols in the first data block as a processing unit, and carrying out single-carrier frequency domain equalization processing on the L main body symbols and the P pilot symbols to realize frequency domain equalization. Meanwhile, the P pilot symbols in the processing unit are used as known information, so that the receiver can be helped to better realize a decision feedback type frequency domain equalization processing algorithm, and the single carrier equalization performance is further improved. The P pilot symbols in the preamble signal can be used as the cyclic prefix of the processing unit to resist the multipath delay of the transmission channel and protect the current processing unit from being interfered by the previous frame data symbols, as shown in fig. 4.
Referring to fig. 5, the intra data block processing provided by the embodiment of the present invention is illustrated: b × S data symbols in a data block and P pilot symbols in the next data block may be used as a processing unit, and single carrier frequency domain equalization processing is used for the processing unit to implement frequency domain equalization. Meanwhile, the P pilot symbols in the processing unit are used as known information, so that the receiver can be helped to better realize a decision feedback type frequency domain equalization processing algorithm, and the single carrier equalization performance is further improved. The P pilot symbols in the data block can be used as the cyclic prefix of the processing unit to resist the multipath time delay of the transmission channel and protect the current processing unit from the interference of the data symbol of the previous data block.
Referring to fig. 6, the following description will be made to the following processing of the tail data block according to an embodiment of the present invention: b × S data symbols in the data block and P pilot symbols of the preamble signal of the next frame may be used as a processing unit, and single carrier frequency domain equalization processing is used for the processing unit to implement frequency domain equalization. Where B is the number of data groups in the data block and S is the number of symbols in each data group. Meanwhile, the P pilot symbols in the processing unit are used as known information, so that the receiver can be helped to better realize a decision feedback type frequency domain equalization processing algorithm, and the single carrier equalization performance is further improved. The P pilot symbols in the data block can be used as the cyclic prefix of the processing unit to resist the multipath time delay of the transmission channel and protect the current processing unit from the interference of the data symbol of the previous data block.
Referring to table (1), 8 data block types provided for a digital broadcasting system according to an embodiment of the present invention are explained: the number of data blocks N contained in each physical signal frame, the number of pilot symbols P in each data block and the number of data groups B in each data block are different under different data block types. Each broadcast channel can only use one data block type, and the data block type information used by each broadcast channel can be carried by the body symbol in the preamble signal. Specific parameters of 8 data block types are shown in table (1), and each data group contains 16 data symbols.
Watch (1)
In which FHMultThe expansion factor of the frame header data block can be 1,2,3 and 4; n is a radical ofbwThe system bandwidth expansion factor can be 1,2,4, 8.
The body symbol in the preamble signal carries 3 bits of information corresponding to 8 types of data block type information used by the physical signal frame of the digital broadcasting system in table (1).
Referring to fig. 7, an intra-frame pilot generation method according to an embodiment of the present invention is described, in which an intra-frame pilot sequence with a length P is generated according to an intra-frame pilot sequence generation parameter table provided in table (2). The pilot symbol with length P in each data block consists of two sections of length PdPilot sequence configuration of P/2, denoted c1And c2。
Pilot sequence c1And c2From the same segment of length NZC＝2tZadoff-Chu sequence of-1
And fill symbol composition, t and PdThe relation between is Pd＝2t。c1And c2The method comprises the following steps:
Where the padding symbols z are BPSK symbols mapped from bit 1.
The generation method of the Zadoff-Chu sequence q is shown as the following formula:
under various pilot frequency length modes, the Zadoff-Chu sequence order number t and the root number u are configured according to the table (2).
TABLE (2) Intra-frame Pilot sequence Generation parameter Table
| Pilot length P | Order t of Zadoff-Chu sequence | Root number u |
| 32 | 4 | 13 |
| 64 | 5 | 17 |
| 128 | 6 | 40 |
| 256 | 7 | 81 |
| 512 | 8 | 139 |
| 1024 | 9 | 465 |
| 2048 | 10 | 92 |
The intra-frame data symbol interleaving uses the data group as a basic operation unit, and only performs all data groups on the frame body data block (data blocks M +1 to N in fig. 2).
After constellation mapping is completed, the physical data pipe service data carried by the frame body data blocks (data blocks M +1 to N in fig. 1) are sequentially input into the intra-frame data symbol interleaving unit according to the order of the data pipe and the data group (the first data group of the physical data pipe 1, …, the last data group of the physical data pipe 1, the first data group of the physical data pipe 2, …, and the last data group of the physical data pipe K). Referring to fig. 8(a), intra-frame interleaving is written in rows (top-down); referring to fig. 8(b), readout is performed in column (left to right) order; one data group at a time is written or read. The data groups output by the frame interleaver are mapped to the frame body data blocks in turn according to the output sequence. Interleaver row and column parameters for different system bandwidths and different data block types are shown in tables 3-5.
TABLE (3), NbwWhen 1 or 2, data symbol interleaving parameter
TABLE (4), NbwWhen 4, data symbol interleaving parameter
| Data block type | Number of data groups to be interleaved per physical signal frame | Number of interleaving block lines X | Number of interleaving block columns Y |
| 1 | (212-FHMult)*240*4 | (212-FHMult)*2 | 240*2 |
| 2 | (212-FHMult)*224*4 | (212-FHMult)*2 | 224*2 |
| 3 | (212-FHMult)*240*4 | (212-FHMult)*2 | 240*2 |
| 4 | (212-FHMult)*224*4 | (212-FHMult)*2 | 224*2 |
| 5 | (212-FHMult)*248*4 | (212-FHMult)*2 | 248*2 |
| 6 | (212-FHMult)*240*4 | (212-FHMult)*2 | 240*2 |
| 7 | (212-FHMult)*254*4 | (212-FHMult)*2 | 254*2 |
| 8 | (212-FHMult)*240*4 | (212-FHMult)*2 | 240*2 |
TABLE (5), NbwWhen 8, data symbol interleaving parameter
| Data block type | Number of data groups to be interleaved per physical signal frame | Number of interleaving block lines X | Number of interleaving block columns Y |
| 1 | (212-FHMult)*240*8 | (212-FHMult)*4 | 240*2 |
| 2 | (212-FHMult)*224*8 | (212-FHMult)*4 | 224*2 |
| 3 | (212-FHMult)*240*8 | (212-FHMult)*4 | 240*2 |
| 4 | (212-FHMult)*224*8 | (212-FHMult)*4 | 224*2 |
| 5 | (212-FHMult)*248*8 | (212-FHMult)*4 | 248*2 |
| 6 | (212-FHMult)*240*8 | (212-FHMult)*4 | 240*2 |
| 7 | (212-FHMult)*254*8 | (212-FHMult)*4 | 254*2 |
| 8 | (212-FHMult)*240*8 | (212-FHMult)*4 | 240*2 |
In the data transmission method of the digital broadcasting system, the data transmission method includes: according to the requirements of each service to be transmitted on real-time performance and QOS, a physical data pipeline or a physical fast pipeline can be selected for transmission, and the width of the pipeline can be flexibly configured according to the size of the service data volume.
The physical signaling data has high real-time requirement, the physical signaling data is configured to a physical signaling pipeline, inter-frame interleaving of the pipeline data is not performed, and the requirements of the physical signaling data on the real-time property and the service quality are ensured by adopting FEC coding with short code length and low code rate.
Configuring fast service data with high real-time requirement, such as data services of navigation, positioning and the like, to a physical fast pipeline without performing inter-frame interleaving of pipeline data, and ensuring the requirements of the fast service data on real-time performance and service quality by adopting FEC (forward error correction) coding with short code length and low code rate;
configuring service data with certain real-time requirements to a physical data pipeline for transmission, performing inter-frame interleaving on the pipeline data, and configuring the interleaving depth to improve the receiving performance of the pipeline data to the maximum extent on the premise of meeting the real-time requirements;
configuring service data which is not sensitive to real-time performance but has higher requirements on service quality to a physical data pipeline for transmission, performing interframe interweaving of pipeline data, and configuring longer interweaving depth to enable the service data to meet the QOS performance requirements;
data interleaving among a plurality of physical data pipelines in a frame can be selected according to the channel condition, on one hand, time diversity in a signal frame is utilized to the maximum extent, on the other hand, a plurality of physical data pipeline data adopting different modulation modes are scattered, demodulation judgment information of scattered low-order modulation data symbols is utilized to further assist adjacent high-order modulation data symbols to demodulate, and therefore the performance of the physical data pipeline adopting high-order modulation is improved.
The data transmission method of the digital broadcasting system provided by the embodiment of the invention enables the receiving end of the single carrier system to adopt a processing method similar to frequency domain equalization in a multi-carrier system, and to utilize methods such as Fast Fourier Transform (FFT) and the like to more simply and efficiently demodulate signals and realize that the complexity is not influenced by the maximum time delay expansion of the channel environment.
The data transmission method of the digital broadcasting system provided by the embodiment of the invention allows the data group to be used as a basic unit to carry out intraframe interleaving (intraframe time diversity is fully utilized, and the scattered low-order modulation data symbols assist the demodulation of high-order modulation data symbols, so that the performance of the high-order modulation service is improved) aiming at the service with low real-time requirement.
The data transmission method of the digital broadcasting system provided by the embodiment of the invention provides a plurality of data block types for adapting to various application environments, such as high-speed mobile receiving, medium-low speed mobile receiving, fixed environment receiving, long channel time delay environment receiving and the like.
In the data transmission method of the digital broadcasting system provided by the embodiment of the invention, pilot symbols with a certain length are periodically inserted into the pilot signals and the data blocks, and besides the time synchronization tracking of channels, carrier frequencies and sampling points, the method can also enable the receiving end of a single carrier system to adopt a processing method similar to the intermediate frequency domain equalization of a multi-carrier system and utilize methods such as Fast Fourier Transform (FFT) and the like to more simply and efficiently demodulate signals.
It will be appreciated by those skilled in the art that the signaling data transmission device 1000 may be implemented in various ways. For example, the data transmission device 1000 may be implemented by an instruction configuration processor. For example, the data transmission apparatus 1000 may be implemented by storing instructions in ROM and reading the instructions from ROM into a programmable device when the apparatus is started. For example, the data transfer device 1000 may be consolidated into a dedicated device (e.g., an ASIC). The data transmission apparatus 1000 may be divided into units independent of each other, or may be implemented by combining them together. The data transmission device 1000 may be implemented by one of the various implementations described above, or may be implemented by a combination of two or more of the various implementations described above.
It is well known to those skilled in the art that with the development of electronic information technology such as large scale integrated circuit technology and the trend of software hardware, it has been difficult to clearly divide the software and hardware boundaries of a computer system. As any of the operations may be implemented in software or hardware. Execution of any of the instructions may be performed by hardware, as well as by software. Whether a hardware implementation or a software implementation is employed for a certain machine function depends on non-technical factors such as price, speed, reliability, storage capacity, change period, and the like. Accordingly, it will be apparent to those skilled in the art of electronic information technology that a more direct and clear description of one embodiment is provided by describing the various operations within the embodiment. Knowing the operations to be performed, the skilled person can directly design the desired product based on considerations of said non-technical factors.
The present invention may be a system, method and/or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied therewith for causing a processor to implement various aspects of the present invention.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present invention may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present invention are implemented by personalizing an electronic circuit, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA), with state information of computer-readable program instructions, which can execute the computer-readable program instructions.
Aspects of the present invention are described herein 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 block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, 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/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, by software, and by a combination of software and hardware are equivalent.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.
Claims (7)
1. A data transmission method of a digital broadcasting system is characterized in that a physical signal frame of the digital broadcasting system comprises a preamble signal, a plurality of frame header data blocks and a plurality of frame body data blocks;
transmitting an information parameter regarding a data block type of a physical signal frame in the preamble signal;
the data block type is used to indicate the following parameters of the physical signal frame: the number of data blocks of a physical signal frame, the number of frame header data blocks, the length of the data blocks, the number of pilot symbols and data groups contained in each data block, and the number of rows and columns of an interleaving matrix interlaced in a frame; the data group comprises a plurality of data symbols;
a physical signaling pipeline for transmitting signaling data and a physical fast pipeline for transmitting fast service data are carried in the frame header data block;
carrying a physical data pipe for transmitting service data in the frame body data block; the code rate of the rapid service data transmitted by the physical rapid pipeline is lower than that of the service data transmitted by the physical data pipeline; only carrying out intra-frame interleaving processing on the frame volume data block;
the signaling data transmitted in the physical signaling pipeline comprises signaling information parameters of the physical signaling pipeline, signaling information parameters of the physical data pipeline and signaling information parameters of the physical fast pipeline;
the preamble signal comprises P pilot symbols and a plurality of main body symbols, and the frame header data block and the frame body data block both comprise P pilot symbols and a plurality of data symbols.
2. The method according to claim 1, wherein a system receiving end can use the body symbol of the preamble signal and the P pilot symbols of the first frame header data block as a processing unit to perform single carrier frequency domain equalization processing.
3. The method of claim 1, wherein a system receiving end can use the data symbols of a previous data block and the P pilot symbols of a next data block as a processing unit to perform single carrier frequency domain equalization.
4. The method of claim 1, wherein a system receiving end can use P data symbols of a last frame body data block of a previous physical signal frame and P pilot symbols of a preamble of a next physical signal frame as a processing unit to perform single carrier frequency domain equalization processing.
5. The method of claim 1, wherein the intra interleaving the frame body data block is based on a data group.
6. The method of claim 5, wherein the row and column parameters of the interleaver used for intra-frame interleaving are different for different digital broadcast system bandwidths and different data block types.
7. A data transmission device of a digital broadcasting system comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of claims 1 to 6 when executing the program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801554.5A CN109474895B (en) | 2017-09-07 | 2017-09-07 | Data transmission method and apparatus for digital broadcasting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710801554.5A CN109474895B (en) | 2017-09-07 | 2017-09-07 | Data transmission method and apparatus for digital broadcasting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109474895A CN109474895A (en) | 2019-03-15 |
| CN109474895B true CN109474895B (en) | 2021-08-13 |
Family
ID=65658052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710801554.5A Active CN109474895B (en) | 2017-09-07 | 2017-09-07 | Data transmission method and apparatus for digital broadcasting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109474895B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110166849B (en) * | 2019-05-22 | 2021-06-04 | 中国科学院上海高等研究院 | Dynamic frame structure transmission device, method, terminal, medium, and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155128A (en) * | 2006-09-29 | 2008-04-02 | 华为技术有限公司 | Method and system for implementing mobile data business |
| CN101800722A (en) * | 2009-02-11 | 2010-08-11 | 北京泰美世纪科技有限公司 | Mobile multimedia broadcast transmission system |
| CN102694764A (en) * | 2011-08-17 | 2012-09-26 | 国家广播电影电视总局广播科学研究院 | Methods and devices for sending and receiving digital audio signal in digital audio broadcasting system |
| EP2629444A1 (en) * | 2012-02-20 | 2013-08-21 | LG Electronics, Inc. | Method and apparatus for transceiving broadcast signals |
| CN109474836A (en) * | 2017-09-07 | 2019-03-15 | 北京泰美世纪科技有限公司 | The sending, receiving method and device of digital multimedia signal |
-
2017
- 2017-09-07 CN CN201710801554.5A patent/CN109474895B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155128A (en) * | 2006-09-29 | 2008-04-02 | 华为技术有限公司 | Method and system for implementing mobile data business |
| CN101800722A (en) * | 2009-02-11 | 2010-08-11 | 北京泰美世纪科技有限公司 | Mobile multimedia broadcast transmission system |
| CN102694764A (en) * | 2011-08-17 | 2012-09-26 | 国家广播电影电视总局广播科学研究院 | Methods and devices for sending and receiving digital audio signal in digital audio broadcasting system |
| EP2629444A1 (en) * | 2012-02-20 | 2013-08-21 | LG Electronics, Inc. | Method and apparatus for transceiving broadcast signals |
| CN109474836A (en) * | 2017-09-07 | 2019-03-15 | 北京泰美世纪科技有限公司 | The sending, receiving method and device of digital multimedia signal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109474895A (en) | 2019-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101889399B (en) | Method and apparatus for interleaving data in mobile communication system | |
| CN101317411A (en) | Phase noise canceling OFDM receiver | |
| US20150263825A1 (en) | Method and apparatus for interleaving data in a mobile communication system | |
| US9819364B2 (en) | Apparatus and method for transmitting/receiving signal in communication system supporting bit-interleaved coded modulation with iterative decoding scheme | |
| EP3214780A1 (en) | Device | |
| US10136397B2 (en) | Base station apparatus and terminal apparatus | |
| US20100329196A1 (en) | Method and apparatus for transmitting uplink control channel in a mobile communication system | |
| US20240187154A1 (en) | Frequency spreading for high-performance communications | |
| US20200044897A1 (en) | Wireless communication method, apparatus, and system | |
| CN109474895B (en) | Data transmission method and apparatus for digital broadcasting system | |
| WO2013183581A1 (en) | Transmission device, reception device, transmission method and reception method | |
| JP2008131558A (en) | Radio transmitter, radio receiver, radio communication system and radio communication method | |
| WO2019047733A1 (en) | Device for sending and device for receiving digital multimedia signals, and methods for same | |
| CN106575985A (en) | Data processing apparatus and data processing method | |
| WO2017097077A1 (en) | Data processing method and apparatus | |
| CN109474370B (en) | Pipeline data transmission method and equipment of digital broadcasting system | |
| EP2706713A1 (en) | Multi-carrier symbols with varying coding rates | |
| JP6313949B2 (en) | Transmitting device, receiving device, and chip | |
| KR102653888B1 (en) | Wireless communication apparatus and symbol-based processing method for downlink signals thereof | |
| Mohamad et al. | Multi-Band OFDM and OFDM Simulation Software Using MATLAB® Graphical User Interface | |
| JP6271951B2 (en) | Transmitting device, receiving device, digital broadcasting system, and chip | |
| CN107078994B (en) | Apparatus and method for transmitting and processing signal | |
| CN105721929A (en) | Frequency de-interleaving and time de-interleaving circuit, frequency de-interleaving and time de-interleaving method, and receiving circuit of digital television | |
| Zhao et al. | The application of OFDM in UAV telemetry | |
| WO2013027635A1 (en) | Communication device, communication method, program, and integrated circuit |
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 |