CN101022445A - Method and system for using multi-modulation system method and system in compatible DAB T-MMB system - Google Patents
Method and system for using multi-modulation system method and system in compatible DAB T-MMB system Download PDFInfo
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Abstract
A method for using multiple modulation mode in T-MMB system of compatible DAB carries out OFDM symbol blocking and modulations of DQPSK and 8DPSK as well as 16DAPSK separately on coded data in different modulation mode at various transmission modes by utilizing service type indication in FIC and T-MMB service modulation mode indication of T-MMB system transmission frame for realizing data multiplexing of different service type and different modulation mode.
Description
Technical field
The present invention relates to digital multimedia broadcasting system, particularly T-MMB system transmissions frame data are used the method and system of multiple modulation system.
Background technology
In order to improve the availability of frequency spectrum of broadcast system, can adopt high order modulation, transmission is more professional.
The DQPSK modulation is adopted in the digital audio broadcasting (DAB) in Europe, the Korea S's T-DMB (T-DMB) that grows up on this basis also adopts the DQPSK modulation, the new ground mobile multimedia broadcast T-MMB system compatible DAB that proposes, support the DQPSK modulation, also support high order modulation, as 8DPSK or 16DAPSK modulation, thereby the higher availability of frequency spectrum is arranged.Modulation system is indicated by the certain bits of FIC in the transmission frame.
Because transmission frame-form keeps the same with DAB, the sum of subchannel CU remains unchanged in order to support high order modulation, then the bit number of each CU is relevant with modulation system, each CU accounts for 64 bits during the DQPSK modulation, each CU accounts for 96 bits during the 8DPSK modulation, each CU accounts for 128 bits during the 16DAPSK modulation, and promptly each CU is 32 modulation symbols.
In the T-MMB transmission frame, can realize the time-multiplexed of DAB, T-DMB, T-MMB three class business, the T-MMB business is supported DQPSK, 8DPSK, 16DAPSK modulation again, when transmitting terminal carries out OFDM symbol piecemeal and modulation to the bit stream of the transmission frame multiplexer of having encoded output, the modulation system and the information such as sub-channel positions, size of each subchannel need be known, otherwise multiple modulation system can't be realized.Therefore need know among the transmission mode of system and the FIC about descriptors such as type of service, sub-channel positions, size and modulation systems at transmitting terminal.
The transmission frame-form of T-MMB system as shown in Figure 1, the structure of transmission frame and length all depend on transmission mode.Each transmission mode has the FIB (FIB) and the public interleaving frame (CIF) of respective numbers.The T-MMB transmission system is made up of three channels, is respectively synchronizing channel, FIC and MSC.Wherein synchronizing channel is mainly used to basic demodulation effect, and is synchronous as transmission frame, automatically FREQUENCY CONTROL, channel status estimation and transmitter identification.MSC is used for transmitting audio frequency, video and data service composition.And system multiplexing configuration information (MCI) that receiver need be discerned and data traffic information (SI) transmit with FIC.
Summary of the invention
The objective of the invention is by among the FIC of transmission frame about the indication of type of service, sub-channel positions, size and modulation system and transmission mode, transmission frame data behind the coding are carried out OFDM symbol piecemeal and DQPSK, 8DPSK, 16DAPSK modulation, realize that a kind of Compatiable DAB improves the digital multimedia broadcasting system of the availability of frequency spectrum again.
The present invention proposes a kind of method of using multiple modulation system in the T-MMB of Compatiable DAB system, comprising:
Adjust the arrangement of MSC (MSC) sub-channels data according to modulation system;
According to information such as transmission mode and modulation systems the transmission frame data after encoding are carried out OFDM symbol piecemeal;
Data behind the piecemeal are carried out the DQPSK/8DPSK/16DAPSK modulation respectively.
According to above-mentioned method, it is characterized in that further comprising: the data of in MSC, pressing each subchannel of sequence arrangement of modulation system DQPSK, 8DPSK, 16DAPSK; But the sub-channel data sequence arrangement of identical modulation system; The original position of the subchannel of different modulating mode (Start Address) should be alignd with the integral multiple of corresponding OFDM symbolic blocks block length under different transmission mode, and insufficient section fills out 0; Unappropriated capacity unit (CU) is arranged and is modulated by the modulation system of the high-order that occurs in the system in the public interleaving frame of MSC (CIF).
According to above-mentioned method, it is characterized in that further comprising:, the transmission frame data of having encoded are carried out OFDM symbol piecemeal according to the indication of the type of service among transmission mode and the FIC, subchannel tissue, the professional modulation system of T-MMB.
According to above-mentioned method, it is characterized in that further comprising: pattern identification (MID) field of the transmission mode information of symbol piecemeal needs from the frame delineation zone (FC) of ensemble coffret (ETI) transmission frame of T-MMB system obtains.
According to above-mentioned method, it is characterized in that further comprising: distinguishing according to DSCTy (DSCTy) among the 0 expansion 2-FIG0/2 of FIG type among the FIC is DAB, T-DMB or T-MMB business.
According to above-mentioned method, it is characterized in that further comprising: if any the T-MMB business, then according to modulation system (ModuType) indication among FIG type among the FIC 0 expansion 15-FIG0/15, distinguishing the professional modulation system of using of T-MMB, is wherein a kind of of DQPSK, 8DPSK or 16DAPSK.
According to above-mentioned method, it is characterized in that further comprising: according to the 0 expansion 1-FIG0/1 of FIG type among the FIC, and the original position (Start Address) of the FIG0/15 sub-channels when FIG type 0 expansion 15-FIG0/15 is arranged and the indication (is unit with CU) of size (Sub-channel size), calculate the bit position and the quantity that need the subchannel modulated with DQPSK; As the subchannel of useful 8DPSK modulation, then according to subchannel original position among the FIG0/15 and big or small bit position and the quantity that calculates subchannel; As the subchannel of useful 16DAPSK modulation, then according to subchannel original position among the FIG0/15 and big or small bit position and the quantity that calculates subchannel.
According to above-mentioned method, it is characterized in that further comprising: according to transmission mode and modulation system the transmission frame data are carried out OFDM symbol piecemeal and reorganization respectively, the block length of OFDM symbol is relevant with transmission mode and modulation system; The data of FIC are modulated with DQPSK, separately piecemeal; The data of the 3 kinds of modulation systems of gathering into the block length integral multiple among the MSC are distinguished piecemeal in proper order by DQPSK, 8DPSK, 16DAPSK.
According to above-mentioned method, it is characterized in that further comprising: the data behind the piecemeal of arranging by modulation system are carried out QPSK, 8PSK, 16APSK sign map respectively; Data based different transmission mode after the mapping is carried out frequency interlacing; Data after interweaving are that benchmark carries out differential modulation with phase reference symbol (PRS), thereby realize DQPSK, 8DPSK, 16DAPSK modulation.
The present invention also proposes a kind of system that uses multiple modulation system in the T-MMB of Compatiable DAB system, comprising:
1 module of adjusting MSC sub-channels data arrangement according to modulation system;
1 module of the transmission frame data after encoding being carried out OFDM symbol piecemeal according to information such as transmission mode and modulation systems;
1 module of the data behind the piecemeal being carried out the DQPSK/8DPSK/16DAPSK modulation.
According to above-mentioned system, it is characterized in that further comprising: in the module of adjusting MSC sub-channels data arrangement, by the data of each subchannel among the sequence arrangement MSC of modulation system DQPSK, 8DPSK, 16DAPSK; But the sub-channel data sequence arrangement of identical modulation system; The original position of the subchannel of different modulating mode (StartAddress) should be alignd with the integral multiple of corresponding OFDM symbolic blocks block length under different transmission mode, and insufficient section fills out 0; Unappropriated CU arranges and modulates by the modulation system of the high-order that occurs in the system among the CIF of MSC.
According to above-mentioned system, it is characterized in that further comprising: the transmission frame data behind the coding are carried out the type of service among the input FIC in the module of OFDM symbol piecemeal, subchannel tissue, the indication of T-MMB business modulation system and the transmission mode information in the ETI transmission frame; Output by DQPSK, 8DPSK, tactic 3 classes of 16DAPSK piecemeal to be modulated after data.
According to above-mentioned system, it is characterized in that further comprising: required pattern identification (MID) field of transmission mode information from the frame delineation zone (FC) of the ETI transmission frame of T-MMB system of symbol piecemeal obtains.
According to above-mentioned system, it is characterized in that further comprising: distinguishing according to DSCTy (DSCTy) among the 0 expansion 2-FIG0/2 of FIG type among the FIC is DAB, T-DMB or T-MMB business.
According to above-mentioned system, it is characterized in that further comprising: if any the T-MMB business, then according to modulation system (ModuType) indication among FIG type among the FIC 0 expansion 15-FIG0/15, distinguishing the professional modulation system of using of T-MMB, is wherein a kind of of DQPSK, 8DPSK or 16DAPSK.
According to above-mentioned system, it is characterized in that further comprising: according to the 0 expansion 1-FIG0/1 of FIG type among the FIC, and the original position (Start Address) of the FIG0/15 sub-channels when FIG type 0 expansion 15-FIG0/15 is arranged and the indication (is unit with CU) of size (Sub-channel size), calculate the bit position and the quantity that need the subchannel modulated with DQPSK; As the subchannel of useful 8DPSK modulation, then according to subchannel original position among the FIG0/15 and big or small bit position and the quantity that calculates subchannel; As the subchannel of useful 16DAPSK modulation, then according to subchannel original position among the FIG0/15 and big or small bit position and the quantity that calculates subchannel.
According to above-mentioned system, it is characterized in that further comprising: according to transmission mode and modulation system the transmission frame data are carried out OFDM symbol piecemeal and reorganization respectively, the block length of OFDM symbol is relevant with transmission mode and modulation system; The data of FIC are modulated with DQPSK, separately piecemeal; The data of the 3 kinds of modulation systems of gathering into the block length integral multiple among the MSC are distinguished piecemeal in proper order by DQPSK, 8DPSK, 16DAPSK.
According to above-mentioned system, it is characterized in that further comprising: in the DQPSK/8DPSK/16DAPSK modulation module, comprise QPSK, 8PSK, each 1,1 frequency interleaver of 16APSK symbol mapper, 1 PRS signal generator and 1 differential modulation device; Data behind the piecemeal of classifying by the different modulating mode are imported corresponding symbol mapper respectively and are carried out QPSK, 8PSK, 16APSK sign map; Data incoming frequency interleaver after the mapping carries out frequency interlacing; Data input difference modulator after interweaving is that benchmark is done differential modulation with PRS, realizes DQPSK, 8DPSK, 16DAPSK modulation.
Description of drawings
Fig. 1 is the transmission frame-form figure of the T-MMB system of Compatiable DAB.
Fig. 2 is the main signal product process figure of the T-MMB system of Compatiable DAB.
Fig. 3 is the method flow diagram that uses multiple modulation system in the T-MMB system of Compatiable DAB.
Fig. 4 is the FIB structure chart of the T-MMB system of Compatiable DAB.
Fig. 5 is the configuration structure of FIG0/2 of basic service tissue of describing the T-MMB system of Compatiable DAB among the FIC.
Fig. 6 is a configuration structure of describing the FIG0/1 of the subchannel information of DAB/T-DMB business in the T-MMB system of Compatiable DAB among the FIC.
Fig. 7 is a configuration structure of describing the FIG0/15 of the subchannel information of MMB business in the T-MMB system of Compatiable DAB among the FIC.
Fig. 8 is the planisphere of 8PSK sign map.
Fig. 9 is the planisphere of 16APSK sign map.
Embodiment
The main signal product process figure of the T-MMB system of the Compatiable DAB that the present invention relates to as shown in Figure 2.
In order in the T-MMB system, to realize multiple modulation system, need carry out OFDM symbol piecemeal according to information such as the sub-channel positions that provides among transmission mode and the FIC, size and modulation systems, output is by DQPSK, 8DPSK, the tactic modulating data for the treatment of of 16DAPSK, carry out corresponding sign map and frequency interlacing and differential modulation then, as shown in Figure 3.
Pattern identification (MID) field of the transmission mode information that transmitting terminal needs from the frame delineation zone (FC) of ETI transmission frame obtains.The transmission mode of T-MMB system has four kinds, represents pattern I when MID=01 (binary representation, high-order preceding); When MID=10, represent pattern II; When MID=11, represent pattern III; When MID=00, represent pattern IV.
Other indication informations obtain by the FIG of descriptor channel different service types among the FIC.FIC is made up of a plurality of FIB, and the transmission frame of each pattern has the FIB of respective numbers, and FIB is made up of FIG, and FIB is 256 bits, as shown in Figure 4.FIG has polytype, and every type also has multiple expansion.
By among the FIG type 0 expansion 2-FIG0/2 to the indication of DSCTy (DSCTy), differentiation is DAB, T-DMB or T-MMB business, if DSCTy=011000, then expression is the T-DMB business, if DSCTy=011001, then expression is the T-MMB business, if DSCTy is other values, then look into the definition of DSCTy and see whether be certain type of service of DAB, as shown in Figure 5.
By among the FIG type 0 expansion 1-FIG0/1 sub-channel positions (Start Address) and the size (Sub-channel size) of DAB/T-DMB business being indicated (CU is a unit), calculating is with the bit position and the size of each subchannel of DQPSK modulation, as shown in Figure 6.The bit position multiply by 64 for the CU position of Start Address indication.The bit size multiply by 64 for the CU number of subchannel.
If the T-MMB business is arranged, then by among the FIG type 0 expansion 15-FIG0/15 to the indication of sub-channel positions (Start Address), size (Sub-channel size) (CU is a unit) and the modulation system (ModuType) of T-MMB business, calculate bit position and size, as shown in Figure 7 with each subchannel of DQPSK, 8DPSK, 16DAPSK modulation.The adding up by DQPSK, 8DPSK, 16DAPSK in proper order each CU bit size of bit position before for the CU position of Start Address indication.The bit size multiply by the size of CU under this modulation system for the CU number of subchannel.
Each subchannel among the MSC is arranged CU separately according to DQPSK, 8DPSK, 16DAPSK order in CIF, but the data sequence arrangement of identical modulation system, the data of different modulating mode because OFDM symbol piecemeal and when modulating required bit number different, the sub-channel data of different modulating mode divides timing its StartAddress should be alignd with the integral multiple of corresponding OFDM symbolic blocks block length under different transmission mode at CU, and insufficient section fills out 0.Therefore the indication information that obtains in FIC should meet above-mentioned requirements.
After obtaining to use the bit position and size of DQPSK, 8DPSK, 16DAPSK modulation respectively, input OFDM symbol piecemeal module, carry out OFDM symbol piecemeal according to the rule of different transmission modes, each OFDM symbol is 1536 * n bit (48 CU) when pattern I, n=2 when modulating with DQPSK, n=3 when modulating with 8DPSK, n=4 when modulating with 16DAPSK.Each OFDM symbol is 384 * n bit (12 CU) when pattern II, and the n definition is the same.Each OFDM symbol is 192 * n bit (6 CU) when pattern III, and the n definition is the same.Each OFDM symbol is 768 * n bit (24 CU) when pattern IV, and the n definition is the same.The data behind DQPSK, 8DPSK, the tactic piecemeal of 16DAPSK are pressed in output.
Lifting an example, suppose T-MMB system transmissions DAB, each cover of T-DMB, T-MMB affair, all is stream mode, respectively occupies a subchannel.The DAB business is made as 128Kbps, modulates with DQPSK, and the convolutional encoding of 1/2 code check, protection level are the audio frequency of 3 grades of unequal error protections (UEP), take the individual CU of 96 (0-95) of 1 CIF; The T-DMB business is made as 384Kbps, modulates with DQPSK, the convolution of 1/2 code check and RS concatenated coding, and protection level takies the individual CU of 288 (96-383) for waiting video of error protection (EEP) 3-A; The T-MMB business is made as 384Kbps, modulates with 8DPSK, the LDPC coding of 1/2 code check, and protection level is the video of the 1-C of EEP, takies the individual CU of 192 (384-575).
Therefore according to the distribution of the CU of system and the subchannel information that from FIC, obtains, the transmission frame deblocking that can have been encoded is: during pattern I, FIC is 2304 * 4 bits, be divided into 3 OFDM symbolic blocks, needing the data with the DQPSK modulation in the data of 1 CIF among the MSC is 96 * 64=6144 bit of DAB business and 288 * 64=18432 bit of T-DMB business; Needing the data with the 8DPSK modulation is 192 * 96=18432 bit of T-MMB business.Remain the CU of usefulness (576-863) not among the MSC and modulate with the modulation system of used high-order in the system, then needing with the bit position among the 8DPSK modulated M SC be 24576-70655.The 0-24575 bit of the MSC data in the transmission frame after encoding is input to OFDM symbol piecemeal module carries out piecemeal, 1536 * 2 bits are divided into an OFDM symbolic blocks, now are divided into 8 symbolic blocks; The 24576-70655 bit (8DPSK modulation) of MSC data is input to OFDM symbol piecemeal module carries out piecemeal, 1536 * 3 bits are divided into an OFDM symbolic blocks, now are divided into 10 symbolic blocks.Therefore obtain by the data behind the piecemeal of different modulating mode.Other transmission modes are similar.
Import modulation module then, comprising:
1. the data of different modulating mode are imported corresponding symbol mapper respectively and are carried out sign map:
The QPSK sign map is referring to 14.5.1 joint among the ETSI EN 300 401.
The 8PSK sign map as shown in Figure 8.
To each OFDM symbol, the vector (p of 3K-bit
L, n)
N=0 3K-1(p wherein
L, nReferring to ETSIEN 300 401[1] the 14.4.2 joint) need be mapped to K 8PSK symbol in the following manner:
Wherein K is a sub-carrier number, Φ
L, mAs shown in table 1:
Table 1 8PSK phase mapping
| Φ l，m | p l，3m p l，3m+1 p l，3m+2 |
| 0 | 001 |
| π/4 | 000 |
| π/2 | 100 |
| 3π/4 | 110 |
| |
010 |
| 5π/4 | 011 |
| 3π/2 | 111 |
| 7π/4 | 101 |
The 16APSK sign map as shown in Figure 9.
To each OFDM symbol, the vector (p of 4K-bit
L, n)
N=0 4K-1Be mapped to K 16APSK symbol in the following manner:
Φ wherein
L, mIt is as shown in table 2,
Table 2 16APSK phase mapping
| Φ l，m | p l，4m+1 p l，4m+2 p l，4m+3 |
| 0 | 001 |
| π/4 | 000 |
| π/2 | 100 |
| 3π/4 | 110 |
| |
010 |
| 5π/4 | 011 |
| 3π/2 | 111 |
| 7π/4 | 101 |
2. frequency interlacing
Frequency interlacing is that the QPSK/8PSK/16APSK symbol is carried out the constellation point mapping according to specific order, and different transmission modes has different interlacing rules, and formula is as follows:
y
L, k=q
L, n, l=2,3,4 ..., L and k=F (n).
Specifically see ETSI EN 300 401.
3. differential modulation
Generate the PRS signal by the phase reference symbol maker,, provide fixed phase for follow-up OFDM symbol carries out differential modulation as second OFDM symbol of transmission frame,
Expression formula is as follows:
kValue pass through formula
Obtain, relevant parameter can specifically be seen ETSIEN 300 401.
8DPSK is modulated on same the subcarrier of two adjacent OFDM symbols and carries out (being the time domain difference), is undertaken by following formula:
z
l，k＝z
l-1，k·y
l，k， l＝2，3，4，...，L，
-K/2≤k≤K/2
Z wherein
L-1, kThe differential modulation signal of representing k subcarrier of l-1 OFDM symbol, y
L, kThe mapping signal of k subcarrier of l OFDM symbol behind the expression frequency-domain-interleaving.
16DAPSK is the differential amplitude modulation scheme that combines with phase place, and its amplitude and phase place are independently carried out differential modulation respectively.Its amplitude is modulated by 2 DASK, and phase place is modulated by 8DPSK.
Differential modulation is carried out on same subcarrier of two adjacent OFDM symbols, is undertaken by following formula:
R wherein
LThe interior ring amplitude of expression 16DAPSK; p
L-1,4k', p
L, 4kBit behind the ' expression frequency-domain-interleaving; Φ
L-1, k', Φ
L, kPhase information behind the ' expression frequency-domain-interleaving.
The modulated data of final output different modulating mode.
Claims (18)
1. method of using multiple modulation system in the T-MMB of Compatiable DAB system comprises:
Adjust the arrangement of MSC (MSC) sub-channels data according to modulation system;
According to information such as transmission mode and modulation systems the transmission frame data after encoding are carried out OFDM symbol piecemeal;
Data behind the piecemeal are carried out the DQPSK/8DPSK/16DAPSK modulation respectively.
2. according to the described method of in the T-MMB of Compatiable DAB system, using multiple modulation system of claim 1, it is characterized in that further comprising: the data of in MSC, pressing each subchannel of sequence arrangement of modulation system DQPSK, 8DPSK, 16DAPSK; But the sub-channel data sequence arrangement of identical modulation system; The original position of the subchannel of different modulating mode (Start Address) should be alignd with the integral multiple of corresponding OFDM symbolic blocks block length under different transmission mode, and insufficient section fills out 0; Unappropriated capacity unit (CU) is arranged and is modulated by the modulation system of the high-order that occurs in the system in the public interleaving frame of MSC (CIF).
3. according to the described method of in the T-MMB of Compatiable DAB system, using multiple modulation system of claim 1, it is characterized in that further comprising:, the transmission frame data of having encoded are carried out OFDM symbol piecemeal according to the indication of the type of service among transmission mode and the FIC, subchannel tissue, the professional modulation system of T-MMB.
4. according to the described method of using multiple modulation system in the T-MMB of Compatiable DAB system of claim 3, it is characterized in that further comprising: pattern identification (MID) field of the transmission mode information of symbol piecemeal needs from the frame delineation zone (FC) of ensemble coffret (ETI) transmission frame of T-MMB system obtains.
5. according to the described method of using multiple modulation system in the T-MMB of Compatiable DAB system of claim 3, it is characterized in that further comprising: distinguishing according to DSCTy (DSCTy) among fast information group among the FIC (FIG) the type 0 expansion 2-FIG0/2 is DAB, T-DMB or T-MMB business.
6. according to the described method of in the T-MMB of Compatiable DAB system, using multiple modulation system of claim 3, it is characterized in that further comprising: if any the T-MMB business, then according to modulation system (ModuType) indication among the 0 expansion 15-FIG0/15 of FIG type among the FIC, distinguishing the professional modulation system of using of T-MMB, is wherein a kind of of DQPSK, 8DPSK or 16DAPSK.
7. according to the described method of in the T-MMB of Compatiable DAB system, using multiple modulation system of claim 3, it is characterized in that further comprising: according to the 0 expansion 1-FIG0/1 of FIG type among the FIC, and the original position (Start Address) of the FIG0/15 sub-channels when FIG type 0 expansion 15-FIG0/15 is arranged and the indication (is unit with CU) of size (Sub-channel size), calculate the bit position and the quantity that need the subchannel modulated with DQPSK; As the subchannel of useful 8DPSK modulation, then according to subchannel original position among the FIG0/15 and big or small bit position and the quantity that calculates subchannel; As the subchannel of useful 16DAPSK modulation, then according to subchannel original position among the FIG0/15 and big or small bit position and the quantity that calculates subchannel.
8. according to the described method of in the T-MMB of Compatiable DAB system, using multiple modulation system of claim 3, it is characterized in that further comprising: according to transmission mode and modulation system the transmission frame data are carried out OFDM symbol piecemeal and reorganization respectively, the block length of OFDM symbol is relevant with transmission mode and modulation system; The data of FIC are modulated with DQPSK, separately piecemeal; The data of the 3 kinds of modulation systems of gathering into the block length integral multiple among the MSC are distinguished piecemeal in proper order by DQPSK, 8DPSK, 16DAPSK.
9. according to the described method of in the T-MMB of Compatiable DAB system, using multiple modulation system of claim 1, it is characterized in that further comprising: the data behind the piecemeal of arranging by modulation system are carried out QPSK, 8PSK, 16APSK sign map respectively; Data based different transmission mode after the mapping is carried out frequency interlacing; Data after interweaving are that benchmark carries out differential modulation with phase reference symbol (PRS), thereby realize DQPSK, 8DPSK, 16DAPSK modulation.
10. system that uses multiple modulation system in the T-MMB of Compatiable DAB system comprises:
1 module of adjusting MSC sub-channels data arrangement according to modulation system;
1 module of the transmission frame data after encoding being carried out OFDM symbol piecemeal according to information such as transmission mode and modulation systems;
1 module of the data behind the piecemeal being carried out the DQPSK/8DPSK/16DAPSK modulation.
11. according to the described system that in the T-MMB of Compatiable DAB system, uses multiple modulation system of claim 10, it is characterized in that further comprising: in the module of adjusting MSC sub-channels data arrangement, by the data of each subchannel among the sequence arrangement MSC of modulation system DQPSK, 8DPSK, 16DAPSK; But the sub-channel data sequence arrangement of identical modulation system; The original position of the subchannel of different modulating mode (Start Address) should be alignd with the integral multiple of corresponding OFDM symbolic blocks block length under different transmission mode, and insufficient section fills out 0; Unappropriated CU arranges and modulates by the modulation system of the high-order that occurs in the system among the CIF of MSC.
12., it is characterized in that further comprising: the transmission frame data behind the coding are carried out type of service, subchannel tissue, the indication of T-MMB business modulation system and the transmission mode information in the ETI transmission frame among the input FIC in the module of OFDM symbol piecemeal according to the described system that in the T-MMB of Compatiable DAB system, uses multiple modulation system of claim 10; Output by DQPSK, 8DPSK, tactic 3 classes of 16DAPSK piecemeal to be modulated after data.
13. according to the described system that uses multiple modulation system in the T-MMB of Compatiable DAB system of claim 11, it is characterized in that further comprising: required pattern identification (MID) field of transmission mode information from the frame delineation zone (FC) of the ETI transmission frame of T-MMB system of symbol piecemeal obtains.
14. according to the described system that uses multiple modulation system in the T-MMB of Compatiable DAB system of claim 11, it is characterized in that further comprising: distinguishing according to DSCTy (DSCTy) among the 0 expansion 2-FIG0/2 of FIG type among the FIC is DAB, T-DMB or T-MMB business.
15. according to the described system that in the T-MMB of Compatiable DAB system, uses multiple modulation system of claim 11, it is characterized in that further comprising: if any the T-MMB business, then according to modulation system (ModuType) indication among the 0 expansion 15-FIG0/15 of FIG type among the FIC, distinguishing the professional modulation system of using of T-MMB, is wherein a kind of of DQPSK, 8DPSK or 16DAPSK.
16. according to the described system that in the T-MMB of Compatiable DAB system, uses multiple modulation system of claim 11, it is characterized in that further comprising: according to the 0 expansion 1-FIG0/1 of FIG type among the FIC, and the original position (Start Address) of the FIG0/15 sub-channels when FIG type 0 expansion 15-FIG0/15 is arranged and the indication (is unit with CU) of size (Sub-channel size), calculate the bit position and the quantity that need the subchannel modulated with DQPSK; As the subchannel of useful 8DPSK modulation, then according to subchannel original position among the FIG0/15 and big or small bit position and the quantity that calculates subchannel; As the subchannel of useful 16DAPSK modulation, then according to subchannel original position among the FIG0/15 and big or small bit position and the quantity that calculates subchannel.
17. according to the described system that in the T-MMB of Compatiable DAB system, uses multiple modulation system of claim 11, it is characterized in that further comprising: according to transmission mode and modulation system the transmission frame data are carried out OFDM symbol piecemeal and reorganization respectively, the block length of OFDM symbol is relevant with transmission mode and modulation system; The data of FIC are modulated with DQPSK, separately piecemeal; The data of the 3 kinds of modulation systems of gathering into the block length integral multiple among the MSC are distinguished piecemeal in proper order by DQPSK, 8DPSK, 16DAPSK.
18., it is characterized in that further comprising: in the DQPSK/8DPSK/16DAPSK modulation module, comprise QPSK, 8PSK, each 1,1 frequency interleaver of 16APSK symbol mapper, 1 PRS signal generator and 1 differential modulation device according to the described system that in the T-MMB of Compatiable DAB system, uses multiple modulation system of claim 10; Data behind the piecemeal of classifying by the different modulating mode are imported corresponding symbol mapper respectively and are carried out QPSK, 8PSK, 16APSK sign map; Data incoming frequency interleaver after the mapping carries out frequency interlacing; Data input difference modulator after interweaving is that benchmark is done differential modulation with PRS, realizes DQPSK, 8DPSK, 16DAPSK modulation.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200610140830 CN101022445A (en) | 2006-10-11 | 2006-10-11 | Method and system for using multi-modulation system method and system in compatible DAB T-MMB system |
| CN 200710163817 CN101232479B (en) | 2006-10-11 | 2007-10-09 | Method for using multi-modulation mode in T-MMB system compatible with DAB |
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| CN 200610140830 CN101022445A (en) | 2006-10-11 | 2006-10-11 | Method and system for using multi-modulation system method and system in compatible DAB T-MMB system |
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| CN 200710163817 Expired - Fee Related CN101232479B (en) | 2006-10-11 | 2007-10-09 | Method for using multi-modulation mode in T-MMB system compatible with DAB |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009140921A1 (en) * | 2008-05-21 | 2009-11-26 | 北京新岸线移动多媒体技术有限公司 | A framing method and a framing device of the common interleaved frame |
| WO2009155876A1 (en) * | 2008-06-27 | 2009-12-30 | 北京新岸线移动多媒体技术有限公司 | Device, method and system for transmitting digital broadcast signals |
| WO2018028467A1 (en) * | 2016-08-12 | 2018-02-15 | 中兴通讯股份有限公司 | Transmitting method and device and receiving method and device for transport block |
| CN110401517A (en) * | 2018-04-24 | 2019-11-01 | 中国移动通信集团有限公司 | A kind of multicarrier combining transmission method and transmitting terminal and receiving end |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011085552A1 (en) * | 2010-01-14 | 2011-07-21 | 华为技术有限公司 | Method and apparatus for compatibly realizing pdm-bpsk and qpsk modulation |
| MX352013B (en) | 2013-08-01 | 2017-11-06 | Lg Electronics Inc | Apparatus for transmitting broadcast signals, apparatus for receiving broadcast signals, method for transmitting broadcast signals and method for receiving broadcast signals. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060044098A (en) * | 2004-11-11 | 2006-05-16 | 엘지전자 주식회사 | Apparatus for tuning channels automatically, and control method for the same |
| US20060239378A1 (en) * | 2005-03-25 | 2006-10-26 | Samsung Electronics Co., Ltd. | Method and apparatus for determining transmitter identification information in terrestrial digital multimedia broadcasting system |
| CN1825968A (en) * | 2006-02-21 | 2006-08-30 | 朱克学 | Receiving and transmitting method for digital mobile broadcasting TV and terminal therefor |
-
2006
- 2006-10-11 CN CN 200610140830 patent/CN101022445A/en active Pending
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2007
- 2007-10-09 CN CN 200710163817 patent/CN101232479B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009140921A1 (en) * | 2008-05-21 | 2009-11-26 | 北京新岸线移动多媒体技术有限公司 | A framing method and a framing device of the common interleaved frame |
| US20110188605A1 (en) * | 2008-05-21 | 2011-08-04 | Beijing Nufront Mobile Multimedia Tech. Co., Ltd. | Framing method and a framing device of the common interleaved frame |
| WO2009155876A1 (en) * | 2008-06-27 | 2009-12-30 | 北京新岸线移动多媒体技术有限公司 | Device, method and system for transmitting digital broadcast signals |
| WO2018028467A1 (en) * | 2016-08-12 | 2018-02-15 | 中兴通讯股份有限公司 | Transmitting method and device and receiving method and device for transport block |
| US10985863B2 (en) | 2016-08-12 | 2021-04-20 | Zte Corporation | Method and apparatus for transmitting transport block, and method and apparatus for receiving transport block |
| CN110401517A (en) * | 2018-04-24 | 2019-11-01 | 中国移动通信集团有限公司 | A kind of multicarrier combining transmission method and transmitting terminal and receiving end |
| CN110401517B (en) * | 2018-04-24 | 2022-04-01 | 中国移动通信集团有限公司 | Multi-carrier hybrid transmission method, sending end and receiving end |
Also Published As
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| CN101232479B (en) | 2011-06-15 |
| CN101232479A (en) | 2008-07-30 |
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