CN1964335A - System for transmitting single carrier and transmitting method thereof - Google Patents
System for transmitting single carrier and transmitting method thereof Download PDFInfo
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- CN1964335A CN1964335A CNA2006101468688A CN200610146868A CN1964335A CN 1964335 A CN1964335 A CN 1964335A CN A2006101468688 A CNA2006101468688 A CN A2006101468688A CN 200610146868 A CN200610146868 A CN 200610146868A CN 1964335 A CN1964335 A CN 1964335A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/361—Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0022—PN, e.g. Kronecker
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/004—Orthogonal
- H04J13/0048—Walsh
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Error Detection And Correction (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
A system for transmitting single carrier and a transmitting method thereof are provided to insert additional information by using a Walsh code, thereby increasing the reliability of transmission signals. A scrambler randomizes transmitting data signals. An FEC(Forward Error Correction) unit corrects a bit error of an inputted data stream. A PN(Pseudo Noise sequence) information generator generates PN information. A Walsh code generator generates a Walsh code which is additional information related to the transmitting side. A logic combination unit logically combines the generated Walsh code with the PN information. A multiplexer inserts the combined Walsh code and the PN information into the data stream. Modulating unit, modulating the multiplexed TS. A IF downconversion, IF conversing the TS which coming from the modulating unit.
Description
The application be that September 30, application number in 2003 are 03139298.9 the applying date, denomination of invention divides an application for the application for a patent for invention of " single carrier transmitting system and method thereof ".
Technical field
The present invention relates generally to single carrier transmitting system and method thereof, relate in particular to the single carrier transmitting system and the method thereof of the reliability that can improve the signal that is transmitted.
Background technology
In communication multimedia, computer and the broadcasting epoch, countries in the world are all always in the broadcasting of digitized simulation type.Particularly, use the digit broadcasting system of satellite to be developed and to have dropped into practicality in developed country such as the U.S., Europe and Japanese.Along with development fast, proposed the different standards that is used for digital broadcasting respectively in various countries.
On December 24th, 1996, the Federal Communications Committee of the U.S. (FCC) passed through the broadcast standard of the digital television standard of Advanced Television Systems Committee as TV of future generation.All terrestrial broadcasting operators must observe and video/audio compression, packet data transmission structure, the modulation ATSC standard relevant with the transmission system standard.Have only the standard of video format not announced (stated), but determine by industrial quarters.
According to the ATSC standard, described video compression scheme adopts the ISO/IEC IS13812-2 standard of motion image expert group 2 (MPEG-2).This standard has been adopted to the standard of all digital broadcasting types of the whole world.Audio compression scheme adopts digital audio compression-3 (AC-3) standard of being proposed by Dolby.The ISO/IEC IS13812 standard of MPEG-2 system has been adopted to a kind of multichannel multiplexing method.This multichannel multiplexing method and video compression scheme are used as in the motion in Europe together.8-vestigial sideband (8-VSB) is adopted to the method for modulation and transmission.Described VSB method is proposed for digital television broadcasting, and the frequency band that uses 6MHz is to obtain the high frequency band efficiency data transfer rate of 19.39Mbps by a simple structure.This also be designed to minimize and the broadcast channel of the existing broadcast system of NTSC (NTSC) between interference.Even for also can stable operation under noise circumstance, this method have been used pilot signal, segment sync signal and field sync signal.Further, for fear of mistake, this method has been used Read-Solomon (RS) sign indicating number and grid (Trellis) coding.
The ATSC digital television standard is to be used to use single carrier VSB method with 6MHz frequency band transmission high-quality video, audio frequency and additional data, and supports terrestrial broadcasting pattern and High Data Rate wired broadcasting pattern simultaneously.The main aspect of this method is the 8-VSB modulator approach, and this method is a kind of modification of existing simulation VSB method, can the modulation of combine digital signal.
Fig. 1 is the schematic block diagram that illustrates according to the digit broadcasting system of ATSC standard.With reference to Fig. 1, described digit broadcasting system comprises scrambler 10, forward error correction (FEC) unit 20, multiplexer (MUX) 30, pilot plug-in unit 40, modulating unit 50 and radio frequency (RF) transducer 60.Described FEC unit 20 comprises Read-Solomon (RS) encoder 21, interleaver 23 and trellis encoder 25.
Scrambler 10 is called as the data random device, and it carries out randomization operation to data signals transmitted, prevent whereby since during synchronous data transmission owing to repeat the problem that synchronizing signal that numeral such as 00000000b or 11111111b cause is lost.The predetermined pattern of scrambler 10 usefulness changes the byte of each data-signal, and this processing be reversed so that accurate value is resumed at receiving terminal.
RS encoder 21 is to add the FEC structure of giving input traffic.FEC is one of technology of revising the bit mistake that takes place during transfer of data.The non-linear of noise in the atmosphere, channelized frequencies, signal attenuation and receiver is the reason of error code.When the data of transmission are that RS encoder 21 afterbodys in 187 bytes add 20 bytes in the MPEG-II transport stream time.20 bytes of this interpolation are called as the Read-Solomon parity bytes.187 bytes that receiver relatively receives and this 20 parity bytes, the accuracy of definite data that receive whereby.Detecting under the wrong situation, receiver finds wrong position, and recovers primary signal by the byte of revising distortion.Each stream can recover many mistakes to 10 bytes by making in this way.Yet, surpass the wrong irrecoverable of 10 bytes, thereby whole stream is dropped.
The order of 23 pairs of data flow of interleaver interweaves, and disperses the data of transmission whereby on time shaft.By doing like this, the data of transmission become and are not afraid of (insensitive) interference.By disperseing the data of transmission, when appearing at certain location, noise kept signal at other frequency band.Receiver reverses above-mentioned processing, reverts to the transmission signals that disperses with primary signal just the same whereby.
Different with RS encoder 21, trellis encoder 25 has a dissimilar FEC structure.And different with the RS encoder 21 that constitutes whole M PEG-II stream, trellis encoder 25 considers that the influence of time encodes.This b referred to as convolution code.Trellis encoder 25 is divided into 42 bit words to the byte of 8 bits.Described 2 bit words quilts and previous word compare, and generate the binary code of one 3 bit, and purpose is to describe the change from previous word to current word.This 3 bit code is transferred to the 8 level code elements of described 8-VSB rather than 2 original bit words (3 bits=8 level).Therefore, 2 bit words that are input to trellis encoder 25 are converted and export as 3 bit signals.Because this feature, 8-VSB is called as 2/3 rate coding device sometimes.The advantage of grid coding is that signal can be followed the tracks of with chronomere, thereby has removed error message.
Behind the grid coding of trellis encoder 25, multiplexer 30 inserts the synchronous and frame synchronization of section in transmission signals.Pilot plug-in unit 40 is inserted into the ATSC pilot tone and has been inserted into section synchronously and the transmission signals of frame synchronization.Here, after just finishing modulation, apply a 1.25v that slight DC deviation is arranged to the 8-VSB baseband signal at once.When this takes place, at slight residual carrier of zero frequency point appearance of modulation spectrum.The residual carrier of this generation is called as " ATSC pilot tone ".
Modulating unit 50 is by using the signal modulation of 8-VSB modulation to receiving from pilot plug-in unit 40.The signal of radio frequency converter 60 conversion modulation, and export the signal of conversion by antenna.
The ATSC data segment is made of 187 bytes and 20 bytes of original MPEG-II data flow.Behind grid coding, 207 bytes of section are become the individual 8 level code element stream of 828 (207x4).
Segment sync signal is the pulse of 41 bytes, and described pulse is repeatedly added to the beginning of data segment and is used to replace the sync byte of original MPEG-II transport stream.Receiver can be distinguished the segment sync signal of repeat pattern from the data of completely random, even and can also and disturb when being in the level that does not allow the data self-recovery accurately recovered clock at noise.Figure 2 illustrates the section that segment sync signal (that is, section synchronously) is assigned to its transmission signals.As shown, the section of transmission signals comprises the segment sync signal of 4 code elements, the transmission mode that is respectively 3 pseudo noises (PN) sequence of 63 code elements, 24 code elements, 96 reservation code elements and 12 pre-sign indicating number code elements.The PN sequence is the synchronizing information sequence that is used for the synchronous and channel estimating of receiver.The PN sequence is produced by PN sequence generation unit (not shown), and is inserted in the transmission signals by multiplexer 30.
Fig. 3 is the view that the frame structure of ATSC data is shown.With reference to Fig. 3, the field of ATSC data comprises 313 continuous data segments, and ATSC field sync (being field sync) becomes the field data section.The ATSC Frame is made of 2 ATSC data fields.
Repeat the ATSC data field with time interval 24.2ms, the 16.7ms perpendicular separation of this and NTSC is similar.Section has well-known data symbols pattern synchronously, and is used in the receiver to remove ghost image.More particularly, remove ghost image and be by relatively, and use the error vector that draws to adjust ghost image and remove the characteristic of equalizer and realize the signal that comprises mistake and field sync.
Usually, the system information signal of the transmission mode of indication mechanism is by using spread-spectrum and be inserted into PN sequence back or among the field sync unit.Yet owing to the field sync signal and without the FEC unit, many warps that show in transmission process or burst noise can cause the distortion of signal.The distortion of this system information causes the reception problem at the digital broadcast signal receiving terminal subsequently.
Disclose a kind of VSB receiving system in the 09/962nd, No. 263 U.S. Patent application (publication number is US2002041608), this receiving system comprises: tuner, tuning RF signal from the vsb transmitter transmission; The VSB demodulator carries out demodulation to the signal from tuner output; Demultiplexer is decomposed into ATSC data and additional data with the signal multichannel of demodulation; Decoder is to the ATSC data decode; Separate randomizer, the data of decoding are separated randomization.
Summary of the invention
Therefore, the purpose of this invention is to provide a kind of in single carrier type digit broadcasting system by using Walsh the sign indicating number digital broadcasting transmission system and the transmission method thereof of system information signal reliably.
In order to realize top target, provide a kind of single carrier transmitting system.This single carrier transmitting system comprises: the scrambler unit is used for TS (transport stream) scrambler to transmitting; The FEC unit is used for carrying out forward error correction from the TS behind the scrambler of scrambler unit to form the TS of coding; PN sequence generation unit is used to produce the PN sequence; Walsh sign indicating number generation unit is used to produce the Walsh sign indicating number corresponding to identifying information; The logic coupling unit is used for Walsh sign indicating number and PN sequence that the logic coupling is produced by Walsh sign indicating number generation unit; Multiplexer (MUX) is used for inserting by the signal and the tail code element of the coupling of logic coupling unit multiplexed to carry out by the TS behind coding; Modulating unit is used for multiplexed TS modulation; And radio frequency converter, be used for carry out the radio frequency conversion from the TS after the modulation of described modulating unit.
According to another aspect of the present invention, provide a kind of single carrier transmission method.Described single carrier transmission method comprises following step: to TS (transport stream) scrambler that will transmit; To carrying out forward error correction from the TS behind the scrambler of scrambler unit to form the TS of coding; Produce the PN sequence; Generation is corresponding to the Walsh sign indicating number of identifying information; Logic is coupling in the Walsh sign indicating number and produces the Walsh sign indicating number of step generation and produce the PN sequence that step produces in the PN sequence; Multiplexed by the signal and the tail code element that are inserted in the coupling of logic coupling step among the TS behind coding to carry out; To multiplexed TS modulation; With to carry out the radio frequency conversion from the TS after the modulation of described modulating unit.
Description of drawings
Above-mentioned target of the present invention and feature are by will be more clear to the explanation of embodiments of the invention with reference to accompanying drawing, wherein:
Fig. 1 is the block diagram that schematically shows according to the digit broadcasting system of ATSC standard:
Fig. 2 is the view that is illustrated in the section of the transmission signals in the system among Fig. 1;
Fig. 3 is the view of structure that the frame of ATSC data is shown;
Fig. 4 is the view that schematically shows according to digital broadcasting transmission system of the present invention;
Fig. 5 is the flow chart that the digital broadcast transmission method of the system among Fig. 4 is shown:
Fig. 6 is the view that schematically shows according to the frame structure of transmission signals of the present invention.
Embodiment
Below, be described with reference to the accompanying drawings the preferred embodiments of the present invention.
Fig. 4 is the view that schematically shows according to the digit broadcasting system of an example of the present invention, and Fig. 5 is the flow chart that the digital broadcast transmission method of the system among Fig. 4 is shown.With reference to Fig. 4, digit broadcasting system according to the present invention comprises scrambler 100, forward error correction (FEC) unit 110, pseudo noise (PN) sequence generation unit 120, Walsh sign indicating number generation unit 130, logic coupling unit 140, multiplexer (MUX) 150, modulating unit 170 and radio frequency (RF) transducer 180.Further, FEC unit 110 comprises Read-Solomon (RS) encoder 111, interleaver 113 and trellis encoder 115.
The scrambler 100 that is called as the data random device for fear of during synchronous data transmission because the problem that the synchronizing signal that causes such as the repetition numeral of 00000000b or 11111111b is lost is carried out random operation to data signals transmitted.The predetermined pattern of scrambler 10 usefulness changes the byte of each data-signal, and this processing is reversed to recover accurate original value at receiving terminal.
The error code of relevant input traffic is corrected in FEC unit 110.Because the operation of RS encoder 111, interleaver 113 and trellis encoder 115 is carried out according to the ATSC standard, will omit further instruction here.
PN sequence generation unit 120 produces the PN sequence, that is, it produces and is used for synchronizing information synchronous between transmission ends and receiving terminal, and gives multiplexer 150 the PN sequence transmission that produces subsequently.The PN sequence that is produced by PN sequence generation unit can be realized as the code element of different numbers, such as 255 code elements, 511 code elements, 1023 code elements, 2047 code elements and 8191 code elements.And " transmission ends " in this specification refers to and is equipped with digital broadcasting transmission system to be used for the receiving terminal of broadcasting according to single carrier mode transmission of digital, and " receiving terminal " refers to the receiving terminal that receives the digital broadcasting of transmission according to the single carrier mode.
Walsh sign indicating number generation unit 130 produces the additional information of relevant transmission ends, that is, it produces the Walsh sign indicating number.Described " additional information " refers to by what transmission ends provided and is used for the receiving terminal identifying information of decoding to received signal fast and easily.Described identifying information can comprise mapping method, code check, at least a about in the frame structure information of the TS of transmission and the data dispersed information.Further, the Walsh sign indicating number is formed by onesize bit stream group, and bit stream is by 2
NForm (N=natural number).
The PN sequence that 140 pairs of logic coupling units are produced by PN sequence generation unit 120 and carry out the logic coupling by the Walsh sign indicating number that Walsh sign indicating number generation unit 130 produces.Logic coupling unit 140 is a NOR gate circuit that is used for XOR coupling PN sequence and Walsh sign indicating number preferably.
Behind the grid coding that trellis encoder 115 is carried out, multiplexer 150 inserts the tail code element in transmission signals.Further, multiplexer 150 inserts PN sequence and the Walsh sign indicating number by 140 couplings of logic coupling unit in transmission signals.
170 pairs of multiplexed signals that receive from multiplexer 150 of modulating unit are modulated.The modulating mode of modulating unit 170 is for example QAM or QPSK.
Signal after 180 pairs of modulation of radio frequency converter carries out the radio frequency conversion, and by the signal after the antenna transmission modulation.
Fig. 5 is the flow chart that the digital broadcast transmission method of the system among Fig. 4 is shown.
With reference to Fig. 5, at step S51O, the 100 couples of TS that will transmit in scrambler unit (transport stream) scrambler.
At step S520, the 110 couples of TS that encode with formation from the execution of the TS behind the scrambler of scrambler unit 100 forward error correction in FEC unit.
Simultaneously, at step S530, PN sequence generation unit 120 produces the PN sequence, and at step S540, the Walsh sign indicating number that Walsh sign indicating number generation unit 130 produces corresponding to identifying information.
Subsequently at step S550, the PN sequence that 140 pairs of logic coupling units are produced by PN sequence generation unit 120 and carry out the logic coupling by the Walsh sign indicating number that Walsh sign indicating number generation unit 130 produces.
Multiplexer (MUX) is carried out multiplexed by inserting in the TS of coding by the signal and the tail code element of the coupling of logic coupling unit at step S560.
Subsequently, at step S570,170 pairs of multiplexed TS modulation of modulating unit.
Finally, at step S580,180 pairs of radio frequency converters carry out the radio frequency conversion from the TS after the modulation of modulating unit 170.
The modulating mode of the modulating unit 170 in step S570 is for example QAM or QPSK.
As mentioned above, digit broadcasting system of the present invention can use OAM and the QPSK modulating mode that is used for the single carrier mode.More particularly, digit broadcasting system of the present invention adopts Move Mode and the distinguishing modulation of fixed mode.That is, Move Mode is used QPSK and fixed mode is used 16QAM.According to the present invention, 64QAM or 256QAM are used for the fixed mode relevant with mass data.
Fig. 6 is the view that schematically shows according to the frame structure of transmission signals of the present invention.With reference to Fig. 6, under the situation of QAM, the frame of signal comprises in order: frame synchronization, payload and training symbol, and under the situation of QPSK, the frame of signal comprises in order: frame synchronization, payload 1, training symbol, payload 2 and tail code element.Frame synchronization comprises the series of 3 PN sequences, and wherein each PN sequence is made of 511 code elements, and is control bit after the PN sequence and is remaining bit behind control bit.The series of described 3 PN sequences is called as training symbol.Here, at the bit that is transmitted by the order wire that is used for transfer of data, control bit is the bit that is used to control, for example parity bits, initial bits or end bit.
Remaining bit is the zone that purpose is used for time shaft change, Bit-Rate Reduction and error correction.Payload is the zone that is used for the information relevant with the upper strata.The tail code element is used for the additional information (that is, identifying information) that will transmit, and is called as ' tail ' symbol region, because it is added to the final node of frame.
Though described the preferred embodiments of the present invention, those skilled in the art is to be understood that the present invention is not limited to described preferred embodiment, can carry out various variations and change as the spirit and scope of the present invention that claim is limited to.
Claims (90)
1, a kind of receiving system comprises:
A/D converter is a digital signal with the analog signal conversion that receives;
Demodulator carries out demodulation to digital signal;
Demultiplexer is coded data, PN sequence and the Walsh sign indicating number that comprises additional information with the Signal Separation of demodulation;
Error correction is carried out to coded data in the FEC unit;
The descrambling code unit carries out descrambling code to the signal from the output of FEC unit, to obtain transport stream.
2, receiving system as claimed in claim 1, wherein, described demodulator is a qam demodulator.
3, receiving system as claimed in claim 2, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
4, receiving system as claimed in claim 1, wherein, described demodulator is a qpsk demodulator.
5, receiving system as claimed in claim 4, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
6, as claim 3 or 5 described receiving systems, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
7, receiving system as claimed in claim 6, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
8, receiving system as claimed in claim 7, wherein, the Walsh sign indicating number is made of onesize bit stream group.
9, receiving system as claimed in claim 8, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
10, a kind of method of reseptance comprises the following steps:
Receive the signal of modulation;
With the analog signal conversion that receives is digital signal;
Digital signal is carried out demodulation;
With the Signal Separation of demodulation is coded data, PN sequence and the Walsh sign indicating number that comprises additional information;
Coded data is carried out error correction;
Data to error correction are carried out descrambling code, to obtain transport stream.
11, method of reseptance as claimed in claim 10, wherein, the pattern of described demodulation step is the QAM demodulation.
12, method of reseptance as claimed in claim 11, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
13, method of reseptance as claimed in claim 10, wherein, the pattern of described demodulation step is the QPSK demodulation.
14, method of reseptance as claimed in claim 13, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
15, as claim 12 or 14 described method of reseptances, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
16, receiving system as claimed in claim 15, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
17, method of reseptance as claimed in claim 16, wherein, the Walsh sign indicating number is made of onesize bit stream group.
18, method of reseptance as claimed in claim 17, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
19, a kind of receiving system that is used to receive signal with PN sequence and Walsh sign indicating number, described Walsh sign indicating number comprises additional information, described receiving system comprises:
Demodulator carries out demodulation to the signal that receives;
Error correction is carried out to demodulated data in the FEC unit;
The descrambling code unit carries out descrambling code to the signal from the output of FEC unit, to obtain transport stream.
20, receiving system as claimed in claim 19, wherein, described demodulator is a qam demodulator.
21, receiving system as claimed in claim 20, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
22, receiving system as claimed in claim 19, wherein, described demodulator is a qpsk demodulator.
23, receiving system as claimed in claim 22, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
24, as claim 21 or 23 described receiving systems, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
25, receiving system as claimed in claim 24, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
26, receiving system as claimed in claim 25, wherein, the Walsh sign indicating number is made of onesize bit stream group.
27, receiving system as claimed in claim 26, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
28, a kind of method of reseptance that is used to receive signal with PN sequence and Walsh sign indicating number, described Walsh sign indicating number comprises additional information, described method of reseptance comprises the following steps:
The signal that receives is carried out demodulation;
Demodulated data is carried out error correction;
Data to error correction are carried out descrambling code, to obtain transport stream.
29, method of reseptance as claimed in claim 28, wherein, the pattern of described demodulation step is the QAM demodulation.
30, method of reseptance as claimed in claim 29, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
31, method of reseptance as claimed in claim 28, wherein, the pattern of described demodulation step is the QPSK demodulation.
32, method of reseptance as claimed in claim 31, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
33, as claim 30 or 32 described method of reseptances, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
34, receiving system as claimed in claim 33, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
35, method of reseptance as claimed in claim 34, wherein, the Walsh sign indicating number is made of onesize bit stream group.
36, method of reseptance as claimed in claim 35, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
37, a kind of receiving system comprises:
Demodulator carries out demodulation to the signal that receives;
Error correction is carried out to demodulated data in the FEC unit;
The descrambling code unit carries out descrambling code to the signal from the output of FEC unit, with the acquisition transport stream,
Wherein, described receiving system receives the signal with PN sequence and Walsh sign indicating number, and described Walsh sign indicating number comprises additional information.
38, receiving system as claimed in claim 37, wherein, described demodulator is a qam demodulator.
39, receiving system as claimed in claim 38, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
40, receiving system as claimed in claim 37, wherein, described demodulator is a qpsk demodulator.
41, receiving system as claimed in claim 40, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
42, as claim 39 or 41 described receiving systems, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
43, receiving system as claimed in claim 42, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
44, receiving system as claimed in claim 43, wherein, the Walsh sign indicating number is made of onesize bit stream group.
45, receiving system as claimed in claim 44, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
46, a kind of method of reseptance comprises:
The signal that receives is carried out demodulation;
Demodulated data is carried out error correction;
Data to error correction are carried out descrambling code, with the acquisition transport stream,
Wherein, the signal of described reception has PN sequence and Walsh sign indicating number, and described Walsh sign indicating number comprises additional information.
47, method of reseptance as claimed in claim 46, wherein, the pattern of described demodulation step is the QAM demodulation.
48, method of reseptance as claimed in claim 47, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
49, method of reseptance as claimed in claim 46, wherein, the pattern of described demodulation step is the QPSK demodulation.
50, method of reseptance as claimed in claim 49, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
51, as claim 48 or 50 described method of reseptances, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
52, receiving system as claimed in claim 51, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
53, method of reseptance as claimed in claim 52, wherein, the Walsh sign indicating number is made of onesize bit stream group.
54, method of reseptance as claimed in claim 53, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
55, a kind of receiving system comprises:
Demodulator carries out demodulation to the signal that receives;
Error correction is carried out to demodulated data in the FEC unit;
The descrambling code unit carries out descrambling code to the signal from the output of FEC unit, with the acquisition transport stream,
Wherein, described receiving system reception has the PN sequence of logic coupling and the signal of Walsh sign indicating number, and described Walsh sign indicating number comprises additional information.
56, receiving system as claimed in claim 55, wherein, described demodulator is a qam demodulator.
57, receiving system as claimed in claim 56, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
58, receiving system as claimed in claim 55, wherein, described demodulator is a qpsk demodulator.
59, receiving system as claimed in claim 58, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
60, as claim 57 or 59 described receiving systems, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
61, receiving system as claimed in claim 60, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
62, receiving system as claimed in claim 61, wherein, the Walsh sign indicating number is made of onesize bit stream group.
63, receiving system as claimed in claim 62, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
64, a kind of method of reseptance comprises:
The signal that receives is carried out demodulation;
Demodulated data is carried out error correction;
Data to error correction are carried out descrambling code, with the acquisition transport stream,
Wherein, the signal of described reception has the PN sequence and the Walsh sign indicating number of logic coupling, and described Walsh sign indicating number comprises additional information.
65, as the described method of reseptance of claim 64, wherein, the pattern of described demodulation step is the QAM demodulation.
66, as the described method of reseptance of claim 65, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
67, as the described method of reseptance of claim 64, wherein, the pattern of described demodulation step is the QPSK demodulation.
68, as the described method of reseptance of claim 67, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
69, as claim 66 or 68 described method of reseptances, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
70, as the described receiving system of claim 69, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
71, as the described method of reseptance of claim 70, wherein, the Walsh sign indicating number is made of onesize bit stream group.
72, as the described method of reseptance of claim 71, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
73, a kind of receiving system that is used to receive the signal of PN sequence with logic coupling and Walsh sign indicating number, described Walsh sign indicating number comprises additional information, described receiving system comprises:
Demodulator carries out demodulation to the signal that receives;
Error correction is carried out to demodulated data in the FEC unit;
The descrambling code unit carries out descrambling code to the signal from the output of FEC unit, to obtain transport stream.
74, as the described receiving system of claim 73, wherein, described demodulator is a qam demodulator.
75, as the described receiving system of claim 74, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
76, as the described receiving system of claim 73, wherein, described demodulator is a qpsk demodulator.
77, as the described receiving system of claim 76, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
78, as claim 75 or 77 described receiving systems, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
79, as the described receiving system of claim 78, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
80, as the described receiving system of claim 79, wherein, the Walsh sign indicating number is made of onesize bit stream group.
81, as the described receiving system of claim 80, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
82, a kind of method of reseptance that is used to receive the signal of PN sequence with logic coupling and Walsh sign indicating number, described Walsh sign indicating number comprises additional information, described method of reseptance comprises the following steps:
The signal that receives is carried out demodulation;
Demodulated data is carried out error correction;
Data to error correction are carried out descrambling code, to obtain transport stream.
83, as the described method of reseptance of claim 82, wherein, the pattern of described demodulation step is the QAM demodulation.
84, as the described method of reseptance of claim 83, wherein, the frame of the signal of described reception comprises frame synchronization, additional information and payload in order.
85, as the described method of reseptance of claim 82, wherein, the pattern of described demodulation step is the QPSK demodulation.
86, as the described method of reseptance of claim 85, wherein, the frame of the signal of described reception comprises frame synchronization, payload 1, training symbol, payload 2 and tail code element in order.
87, as claim 84 or 86 described method of reseptances, wherein, described frame synchronization comprises the series of 3 kinds of PN sequences, and a kind of in wherein said 3 kinds of PN sequences is made of 511 or 255 code elements.
88, as the described receiving system of claim 87, wherein, described additional information comprises mapping method, code check, at least a about in the frame structure information of the data of transmission and the data dispersed information.
89, as the described method of reseptance of claim 88, wherein, the Walsh sign indicating number is made of onesize bit stream group.
90, as the described method of reseptance of claim 89, wherein, each bit stream is by 2
NBit constitutes, and wherein N is a natural number.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0061235 | 2002-10-08 | ||
| KR1020020061235A KR100920726B1 (en) | 2002-10-08 | 2002-10-08 | Single carrier transmission system and a method using the same |
| KR1020020061235 | 2002-10-08 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031392989A Division CN1299455C (en) | 2002-10-08 | 2003-09-30 | Single carrier transmission system and its method |
Publications (2)
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| CN1964335A true CN1964335A (en) | 2007-05-16 |
| CN1964335B CN1964335B (en) | 2010-10-13 |
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| CN2006101468052A Expired - Lifetime CN1968232B (en) | 2002-10-08 | 2003-09-30 | System for transmitting single carrier and transmitting method thereof |
| CNA2006101468692A Pending CN1964336A (en) | 2002-10-08 | 2003-09-30 | System for transmitting single carrier and transmitting method thereof |
| CNB031392970A Expired - Fee Related CN100334822C (en) | 2002-10-08 | 2003-09-30 | Single carrier transmission system and its method |
| CN2006101468688A Expired - Lifetime CN1964335B (en) | 2002-10-08 | 2003-09-30 | System for transmitting single carrier and transmitting method thereof |
| CN2006101468067A Expired - Fee Related CN1968233B (en) | 2002-10-08 | 2003-09-30 | System for transmitting single carrier and transmitting method thereof |
| CNB031392989A Expired - Fee Related CN1299455C (en) | 2002-10-08 | 2003-09-30 | Single carrier transmission system and its method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006101468052A Expired - Lifetime CN1968232B (en) | 2002-10-08 | 2003-09-30 | System for transmitting single carrier and transmitting method thereof |
| CNA2006101468692A Pending CN1964336A (en) | 2002-10-08 | 2003-09-30 | System for transmitting single carrier and transmitting method thereof |
| CNB031392970A Expired - Fee Related CN100334822C (en) | 2002-10-08 | 2003-09-30 | Single carrier transmission system and its method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006101468067A Expired - Fee Related CN1968233B (en) | 2002-10-08 | 2003-09-30 | System for transmitting single carrier and transmitting method thereof |
| CNB031392989A Expired - Fee Related CN1299455C (en) | 2002-10-08 | 2003-09-30 | Single carrier transmission system and its method |
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| CN (6) | CN1968232B (en) |
| HK (4) | HK1107459A1 (en) |
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| KR101328949B1 (en) | 2007-04-10 | 2013-11-13 | 엘지전자 주식회사 | method of transmitting and receiving a broadcast signal |
| KR101351019B1 (en) | 2007-04-13 | 2014-01-13 | 엘지전자 주식회사 | apparatus for transmitting and receiving a broadcast signal and method of transmitting and receiving a broadcast signal |
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| KR101405966B1 (en) | 2007-06-26 | 2014-06-20 | 엘지전자 주식회사 | Digital broadcasting system and method of processing data in digital broadcasting system |
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| KR101486372B1 (en) | 2007-07-25 | 2015-01-26 | 엘지전자 주식회사 | Digital broadcasting system and method of processing data in digital broadcasting system |
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-
2002
- 2002-10-08 KR KR1020020061235A patent/KR100920726B1/en active IP Right Grant
-
2003
- 2003-09-30 CN CN2006101468052A patent/CN1968232B/en not_active Expired - Lifetime
- 2003-09-30 CN CNA2006101468692A patent/CN1964336A/en active Pending
- 2003-09-30 CN CNB031392970A patent/CN100334822C/en not_active Expired - Fee Related
- 2003-09-30 CN CN2006101468688A patent/CN1964335B/en not_active Expired - Lifetime
- 2003-09-30 CN CN2006101468067A patent/CN1968233B/en not_active Expired - Fee Related
- 2003-09-30 CN CNB031392989A patent/CN1299455C/en not_active Expired - Fee Related
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2007
- 2007-11-16 HK HK07112568.0A patent/HK1107459A1/en not_active IP Right Cessation
- 2007-11-23 HK HK07112795.5A patent/HK1109525A1/en not_active IP Right Cessation
- 2007-11-23 HK HK07112794.6A patent/HK1109524A1/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1968232A (en) | 2007-05-23 |
| HK1109525A1 (en) | 2008-06-06 |
| CN1497883A (en) | 2004-05-19 |
| CN1964336A (en) | 2007-05-16 |
| KR20040032282A (en) | 2004-04-17 |
| CN1968233A (en) | 2007-05-23 |
| CN1497884A (en) | 2004-05-19 |
| CN1968233B (en) | 2011-02-16 |
| CN1964335B (en) | 2010-10-13 |
| CN1968232B (en) | 2011-02-16 |
| CN1299455C (en) | 2007-02-07 |
| HK1107459A1 (en) | 2008-04-03 |
| HK1109524A1 (en) | 2008-06-06 |
| KR100920726B1 (en) | 2009-10-07 |
| CN100334822C (en) | 2007-08-29 |
| HK1129007A1 (en) | 2009-11-13 |
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