CN105991502B - The method of reseptance and device of leading symbol - Google Patents

The method of reseptance and device of leading symbol Download PDF

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Publication number
CN105991502B
CN105991502B CN201510076216.0A CN201510076216A CN105991502B CN 105991502 B CN105991502 B CN 105991502B CN 201510076216 A CN201510076216 A CN 201510076216A CN 105991502 B CN105991502 B CN 105991502B
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time
symbol
predetermined
sections
domain
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CN105991502A (en
Inventor
黄戈
邢观斌
张文军
徐洪亮
郭序峰
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Shanghai National Engineering Research Center of Digital Television Co Ltd
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Shanghai National Engineering Research Center of Digital Television Co Ltd
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Priority to CN201611199976.1A priority Critical patent/CN106998312B/en
Application filed by Shanghai National Engineering Research Center of Digital Television Co Ltd filed Critical Shanghai National Engineering Research Center of Digital Television Co Ltd
Priority to CN201611217787.2A priority patent/CN106850489A/en
Priority to CN201910871021.3A priority patent/CN111131114A/en
Priority to CN201510076216.0A priority patent/CN105991502B/en
Priority to CN201611216850.0A priority patent/CN106789816A/en
Priority to CN201910872014.5A priority patent/CN110798421A/en
Priority to CA2945855A priority patent/CA2945855A1/en
Priority to CA2945858A priority patent/CA2945858C/en
Priority to KR1020207036622A priority patent/KR102347011B1/en
Priority to PCT/CN2015/076814 priority patent/WO2015158295A1/en
Priority to KR1020207014009A priority patent/KR102223654B1/en
Priority to KR1020197018441A priority patent/KR102114352B1/en
Priority to KR1020207035510A priority patent/KR102234307B1/en
Priority to CA2945856A priority patent/CA2945856C/en
Priority to KR1020167032059A priority patent/KR102062221B1/en
Priority to KR1020167032055A priority patent/KR102048221B1/en
Priority to US15/304,857 priority patent/US10148476B2/en
Priority to PCT/CN2015/076808 priority patent/WO2015158292A1/en
Priority to KR1020167032058A priority patent/KR102033742B1/en
Priority to CA3211647A priority patent/CA3211647A1/en
Priority to KR1020197012400A priority patent/KR102108291B1/en
Priority to KR1020167032043A priority patent/KR101974621B1/en
Priority to CA2945857A priority patent/CA2945857C/en
Priority to CA3212005A priority patent/CA3212005A1/en
Priority to PCT/CN2015/076812 priority patent/WO2015158293A1/en
Priority to KR1020167032057A priority patent/KR101975551B1/en
Priority to KR1020197033488A priority patent/KR102191859B1/en
Priority to US15/304,853 priority patent/US10411929B2/en
Priority to CA2945854A priority patent/CA2945854A1/en
Priority to US15/304,856 priority patent/US10574494B2/en
Priority to US15/304,851 priority patent/US11071072B2/en
Priority to KR1020197038044A priority patent/KR102196222B1/en
Priority to US15/304,854 priority patent/US10778484B2/en
Priority to PCT/CN2015/076815 priority patent/WO2015158296A1/en
Priority to PCT/CN2015/076813 priority patent/WO2015158294A1/en
Publication of CN105991502A publication Critical patent/CN105991502A/en
Priority to US16/172,662 priority patent/US11201770B2/en
Priority to US16/172,727 priority patent/US11025465B2/en
Application granted granted Critical
Publication of CN105991502B publication Critical patent/CN105991502B/en
Priority to US16/726,928 priority patent/US10958494B2/en
Priority to US16/726,927 priority patent/US11012275B2/en
Priority to US16/992,038 priority patent/US11088884B2/en
Priority to US16/992,040 priority patent/US11128504B2/en
Priority to US16/992,041 priority patent/US11088885B2/en
Priority to US16/992,039 priority patent/US11082274B2/en
Priority to US17/351,197 priority patent/US11799706B2/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2671—Time domain

Abstract

The present invention provides a kind of method of reseptance of leading symbol and devices, there is the time-domain symbol of predetermined three sections of spatial structures at least one, it is characterized in that preliminary Timing Synchronization mode includes: dealing with relationship and/or modulate relationship using distinctive between predetermined three sections of spatial structures, carry out delay sliding auto-correlation to obtain one or more groups of accumulated correlation values；After carrying out delay relationship match and/or specific predetermined mathematical operation based on one or more groups of accumulated correlation values, operation values are used for initial timing synchronization, due at least one targeted time-domain symbol with three-stage structure, synchronization is timed using delay relationship match and/or predetermined mathematical operation based on three sections of relationships between multiple time-domain symbols, can improving performance and such timing synchronization algorithm is more general to greatest extent, complexity is low.

Description

The method of reseptance and device of leading symbol
Technical field
The invention belongs to field of broadcast communication, and in particular to a kind of method of reseptance and related device of leading symbol.
Background technique
Currently, it is real to realize that the transmitting terminal method synchronous with destination time is based on leading symbol in ofdm system Existing.Leading symbol is all known symbol sebolic addressing of transmitting terminal and receiving end of ofdm system, leading symbol mark physical frame Beginning (being named as P1 symbol), only occur a P1 symbol in each physical frame or multiple P1 symbols continuously occur, P1 symbol Number purposes include:
1) detect receiving end rapidly with determine transmitted in channel whether be expectation received signal；
2) basic configured transmission (such as FFT points, frame type information etc.) is provided, carry out receiving end can at receipt of subsequent Reason；
3) original carrier frequency deviation and timing error are detected, to reach frequency and Timing Synchronization after compensating；
4) emergency alarm or broadcast system wake up.
Common, leading symbol includes physical layer formats control section (PHY Format Control or PFC) and physics The leading symbol of layer content-control part (PHY Content Control or PCC), DVB_T2 system includes P1 and P2, is used In transmission signaling information or it is further used for transmission frame format parameter.However, method of reseptance of the prior art for leading symbol, Required signaling is transmitted in view of transmitted multiple leading symbols to adapt to system needs, thus the method for reseptance of receiving end is logical Not high with property, often algorithm complexity is higher in timing synchronization procedure, and the transmission performance of system is lower.
Summary of the invention
Problems solved by the invention is that the method for reseptance of leading symbol and device prior art are for leading in prior art The method of reseptance of symbol, it is contemplated that transmitted multiple leading symbols transmit required signaling to adapt to system needs, thus connect The method of reseptance versatility of receiving end is not high, and often algorithm complexity is higher in timing synchronization procedure, the transmission performance of system compared with It is low.
To solve the above problems, the embodiment of the invention provides a kind of method of reseptances of leading symbol, at least one Time-domain symbol with first predetermined three sections of spatial structures or second predetermined three sections of spatial structures, which is characterized in that have as follows Step: physical frame is handled to obtain baseband signal and judge in baseband signal with the presence or absence of the received leading character of expectation Number；Determine position of the received leading symbol in physical frame；And the leading symbol institute is solved in the presence of signaling information The signaling information of carrying, wherein preliminary with the presence or absence of it is expected to contain in received leading symbol step in judging baseband signal Timing Synchronization mode, which includes: three sections predetermined using first predetermined three sections of spatial structures and/or second Spatial structure is distinctive to deal with relationship and/or modulates relationship, carries out necessary inverse processing to baseband signal and/or signal demodulation is laggard Row delay slides auto-correlation to obtain one or more groups of accumulated correlation values；And prolonged based on one or more groups of accumulated correlation values After slow relationship match and/or specific predetermined mathematical operation, operation values are used for initial timing synchronization, primarily determine leading symbol Part III C in multiple groups three-stage structure can be respectively obtained when leading symbol includes multiple three-stage structures in the position of physical frame Three cumulative correlations between first part A, between first part A and second part B and Part III C and second part B Value is Uca' (n), Ucb' (n), Uab' any one in (n) or any at least two, based on one group in multiple groups accumulated correlation values Or multiple groups carry out delay relationship match and/or predetermined mathematical operation obtains final operation values, which is used for initially It is synchronous.
Optionally, wherein set using K time-domain symbol, be respectively provided with first predetermined three sections of spatial structures or second predetermined Three sections of spatial structures when the K time-domain symbol is arranged as first C-A-B, subsequent K-1 B-C-A, have pre- using the K At least one of time-domain symbol of fixed three sections of spatial structures is multiple, obtains accumulated correlation values
It willIn one or more carry out delay relationship Match and/or phase adjustment after be added or be averaged again, obtain the first operation values Uca(n), delay matching relationship includes following All or part:
And
It willIn one or more prolonged It is added or is averaged again after slow relationship match and/or phase adjustment, obtain the second operation values Ucb-ab(n), delay matching closes System includes following all or part:
And
It willIn one or more carry out delay relationship It is added or is averaged again after matching and/or phase adjustment, obtain third operation values Uab-cb(n).Delay matching relationship includes Following all or parts:
And
Finally, being based on the first final operation values Uca(n) and the second final operation values Ucb-ab(n) and the final operation values of third Uab-cb(n) one or more carries out delay matching again and carries out certain operations, delay matching relationship include following whole or Part:
Uca(n), Ucb-ab(n),Uab-cb(n-NA)。
Optionally, wherein using any one in the K time-domain symbols with predetermined three sections of spatial structures or arbitrarily at least Two obtain accumulated correlation values.
Optionally, wherein at least one has in the time-domain symbol of predetermined three sections of spatial structures, first time-domain symbol tool The three-stage structure that some three-stage structures are prefix-ontology-suffix formula three-stage structure CAB and subsequent time-domain symbol has is super The length of first part will be set as N by prefix-prefix-body type three-stage structure BCAA, the length of second part is set as LenB, The length of Part III is set as LenC, second part B starting point is chosen in prefix-ontology-suffix formula three-stage structure CAB to be corresponded to The first sampled point serial number of first part A is set as N1_1, will sew in advance and chooses second in-prefix-body type three-stage structure BCA Divide B starting point to be set as N1_2 corresponding to the second sampled point serial number of first part A, meets following formula: N1_1+N1_2=2NA- (LenB+Lenc), and N1_1+LenB=NA。
Optionally, wherein by the delay relevant treatment of wherein predetermined quantity using delay number carry out plus-minus one, shape At having delay number itself plus a delay number, the delay number that subtracts one after itself and each plus-minus one, implement cunnings according to this three delay numbers Dynamic delay auto-correlation, then a correlated results is selected with predetermined selected rule.
It optionally, further include being estimated after selecting a correlated results with predetermined selected rule based on correlated results Sampling frequency deviation.
Optionally, after completing the preliminary Timing Synchronization of leading symbol, U is takenca(n) angle of maximum value obtains first jiao in Degree, calculates the first small inclined estimated value, then by Ucb-ab(n) and Uab-cb(n) after conjugate multiplication, also it is maximized corresponding angle Second angle is obtained, to calculate the second small inclined estimated value, is obtained based on the first small inclined estimated value and the second small inclined estimated value Small inclined estimated value.
The embodiment of the invention also provides a kind of reception devices of leading symbol, for receiving transmitted by transmitting terminal at least One time-domain symbol with first predetermined three sections of spatial structures or second predetermined three sections of spatial structures characterized by comprising Receive judging part, physical frame is handled with obtain baseband signal and judge in baseband signal with the presence or absence of it is expected it is received before Lead symbol；Positioning region determines position of the received leading symbol in physical frame；And analysis unit, exist in signaling information When solve signaling information entrained by the leading symbol, wherein receive judging part and/or positioning region and contain preliminary Timing Synchronization list Member, preliminary time synchronization unit are at least used for: making a reservation for three sections of spatial structures using first predetermined three sections of spatial structures and/or second It is distinctive to deal with relationship and/or modulate relationship, delay cunning is carried out after carrying out necessary inverse processing and/or signal demodulation to baseband signal Dynamic auto-correlation obtains one or more groups of accumulated correlation values；And delay relationship is carried out based on one or more groups of accumulated correlation values Match and/or specific predetermined mathematical operation after, operation values are used for initial timing synchronization, primarily determine leading symbol in physical frame Position can respectively obtain in multiple groups three-stage structure Part III C and first when leading symbol includes multiple three-stage structures Divide between A, three accumulated correlation values, that is, U between first part A and second part B and Part III C and second part Bca' (n), Ucb' (n), Uab' any one in (n) or any at least two, based in multiple groups accumulated correlation values it is one or more groups of into Row delay relationship match and/or predetermined mathematical operation obtain final operation values, which is used for initial synchronisation.
Compared with prior art, technical solution of the present invention has the advantages that
The method of reseptance and reception device of the leading symbol provided according to embodiments of the present invention, due to being directed at least one Time-domain symbol with three-stage structure, based on three sections of relationships between multiple time-domain symbols using delay relationship match and/or in advance Determine mathematical operation to be timed synchronization, to greatest extent improving performance and such timing synchronization algorithm is more general, complexity It is low.
Detailed description of the invention
Fig. 1 is the spatial structure schematic diagram of physical frame in the embodiment of the present invention；
Fig. 2 is the Physical Frame Structure signal comprising format control section and content-control part in the embodiment of the present invention Figure；
Fig. 3 is the schematic diagram of the first three-stage structure in the embodiment of the present invention；
Fig. 4 is the schematic diagram of second of three-stage structure in the embodiment of the present invention；
Fig. 5 is the logical schematic of the Timing Synchronization mode of four time-domain symbols in the embodiment of the present invention.
Specific embodiment
Inventor has found the method for reseptance and device of leading symbol in prior art, and there is no special for multiple three-stage structures Not being first is CAB, behind be that the leading symbol of BCA structure does special explanation and optimization entirely.
In view of the above-mentioned problems, inventor after study, provides a kind of three sections of relationships based between multiple time-domain symbols It is timed synchronization using delay relationship match and/or predetermined mathematical operation, to greatest extent improving performance and such fixed When synchronized algorithm it is more general, complexity is low.
It is understandable in order to enable the above objects, features and advantages of the present invention to become apparent, with reference to the accompanying drawing to this hair Bright specific embodiment is described in detail.
The applicable transmitting terminal of the method for reseptance of leading symbol of the invention need to meet predetermined three-stage structure rule, transmitting terminal benefit Signaling information is transmitted at least one time domain with predetermined three-stage structure, time-domain symbol can be used first and make a reservation for three sections of time domains Any one in structure (i.e. CAB) or second predetermined three sections of spatial structures (i.e. BCA).Below just by Fig. 1 to Fig. 4 in originator The spatial structure of required satisfaction is described explanation.
Fig. 1 is the spatial structure schematic diagram of physical frame in the embodiment of the present invention.
As shown in Figure 1, physical frame transmitted by this implementation transmitting terminal separately includes leading symbol and data area, wherein Leading symbol is located at before data area.
Data area is used for transmission data information, such as TS packet or IP packet etc..
Leading symbol is used to rapidly detect to determine whether transmit in channel is expectation received signal, is provided basic Configured transmission (such as FFT points, frame type information etc.), makes receiving end that can carry out receipt of subsequent processing；Detect original carrier Frequency deviation and timing error, to reach frequency and Timing Synchronization after compensating；Urgent broadcast wake-up etc..
Fig. 2 is the Physical Frame Structure signal comprising format control section and content-control part in the embodiment of the present invention Figure.
As shown in Fig. 2, Physical Frame Structure includes leading symbol and data area, wherein leading symbol includes: by physical layer Format control section PFC and physical layer content-control part PCC.Certainly, leading symbol according to the present invention is not limited to Include the part the PFC and the part PCC.
Format control section PFC is made of one or more time-domain symbols (with oblique wire frame representation in figure), when each OFDM Domain symbol size is identical.In the present embodiment, time-domain symbol uses OFDM symbol, as shown in Figure 2, in the present embodiment, transmitting terminal It is used in the PFC of format control section and includes four time-domain symbols.
Fig. 3 is the schematic diagram of the first three-stage structure in the embodiment of the present invention；It is in the embodiment of the present invention with Fig. 4 The schematic diagram of two kinds of three-stage structures.
Include at least one time-domain symbol in the format control section PFC of leading symbol, is accorded with by time domain in this present embodiment Number it is all made of the first following three-stage structure or second of three-stage structure, thus, the time-domain symbol that leading symbol is included also may be used Referred to as three-stage structure time-domain symbol.However with no restrictions, meeting the time-domain symbol in above-mentioned leading symbol can also adopt With the other structures of not three-stage structure.
By Fig. 3 and Fig. 4 it is found that in the present embodiment one, time-domain symbol has following three-stage structure: such as first in Fig. 3 Kind three-stage structure: time domain main running signal (A sections), the prefix generated of the rear portion based on the time domain main running signal (C sections), Yi Jiji The suffix (B sections) of a part generation is chosen in prefix ranges in time domain main running signal；Such as second of three-stage structure in Fig. 4: Time domain main running signal (A sections), the prefix generated of the rear portion based on the time domain main running signal (C sections) and be based on time domain main body Signal chooses the advanced of a part generation in prefix ranges and sews (B sections).
By one section of time domain main running signal (being indicated in figure using A) as first part, the least significant end of neat first part is according to pre- The fixed rule that obtains takes out a part, and predetermined process is simultaneously copied to the front of the first part and (marked to generate Part III in figure with C Show) to be used as prefix, meanwhile, a part is taken out from the rear portion of first part according to predetermined acquisition rule, predetermined process carries out It handles and copies to the rear portion of the first part or processing and copy to the front of prefix to generate second part (with B in figure Mark) to mutually should be used as suffix respectively or sew in advance, thus, generate respectively B as shown in Figure 3 as suffix the first three Segment structure (CAB structure) and B are as second of the three-stage structure (BCA structure) as shown in Figure 4 sewed in advance.
From the point of view of the time-domain symbol with three-stage structure, leading symbol generated in the present embodiment be may include: tool There is the time-domain symbol of the first three-stage structure；Or the time-domain symbol with second of three-stage structure；If or in no particular order arranging The dry freedom with the time-domain symbol of the first three-stage structure and/or several time-domain symbols with second of three-stage structure Combination.I.e. leading symbol can only include CAB or BCA, can also be several CAB or several BCA, can not also limit for quantity Any independent assortment of several CAB and several BCA arranged in no particular order.It should be strongly noted that before of the invention It leads symbol but is not limited to the structure for including C-A-B or B-C-A, can also also include other spatial structures, such as tradition CP knot Structure etc..
A sections are to convert to obtain for example, by 2048 points of IFFT based on certain section of frequency domain main body sequence, by the C in three-stage structure Section is direct copying a part of in A sections, and B sections are modulated signal section a part of in A sections, and the data area of B is no more than C's Data area selects model of the range to the part A of modulated signal section B without departing from interception as the part A of prefix C It encloses.Preferably, the sum of the length of B and the length of C are the length of A.
If NAFor the length of A, if LenCFor the length of C, LenBFor the length of modulated signal section B.If the sampled point serial number of A It is 0,1 ... NA- 1. set the sampled point that N1 is copied to the corresponding first part A of starting point of modulated signal section second part B as selection Serial number, N2 are the sampled point serial number for the corresponding first part A of terminal that selection is copied to modulated signal section second part B.Wherein,
N2=N1+LenB- 1 (formula 1)
In general, to B sections of second part implement be modulated to frequency modulation, M sequence or other sequences etc. are modulated, in this implementation By taking frequency modulation as an example, if P1_A (t) is the time-domain expression of A, then the time-domain expression of the first common leading symbol is
(formula 2)
Wherein, frequency modulation value fSHIt can be chosen for the corresponding i.e. 1/N in subcarrier in frequency domain interval of time-domain OFDM symbolAT, or 1/(LenB+Lenc) wherein T is sampling period, N to TAFor the length of time-domain OFDM symbol, for example, NAIt is 1024, takes fSH=1/ 1024T, and frequency modulation can arbitrarily select first phase.In order to keep correlation peak sharp, fSHAlso it can choose as 1/ (LenBT) or Close to the numerical value of its value.
In the structure of B-C-A, frequency modulation value just with C-A-B structure on the contrary, and modulation can arbitrarily select first phase.
(formula 3)
First sampling of second part (B) starting point corresponding to first part (A) will be chosen in the first three-stage structure (CAB) Point serial number is set as N1_1, second part (B) starting point will be chosen in second of three-stage structure (BCA) corresponding to first part (A) Second sampled point serial number is set as N1_2, the first sampled point serial number N1_1 and the second sampled point serial number N1_2 and needs to meet following formula
N1_1+N1_2=2NA-(LenB+Lenc) (formula 4)
The benefit for meeting such relationship is that the delay relationship of C sections to B sections of identical content and B-C-A are tied in C-A-B structure The delay relationship of B sections Dao A sections identical contents is identical in structure, in C-A-B structure the delay relationship of A sections to B sections of identical content with The delay relationship of B sections Dao C sections identical contents is identical in B-C-A structure, is conducive to receiver and realizes.And C-A-B structure and B-C-A are tied In structure, if the modulation used to B sections is frequency modulation, the frequency deviation value f of two kinds of structuresSHIt wants exactly the opposite, is conducive to receive Machine is realized.
In addition, usually taking N1_1+LenB=NA。
The symbol that C-A-B structure is indicated with serial number 1 indicates the symbol of B-C-A structure with serial number 2.Then setting P1_A (t) is A1 Time-domain expression, P2_A (t) is the time-domain expression of A2, then the time-domain expression of C-A-B three-stage structure is
(formula 5)
The time-domain expression of B-C-A three-stage structure is
(formula 6)
Wherein, the first three-stage structure and second of three-stage structure arranged in no particular order, can divide according to successive difference The different leading characters being freely combined by several the first three-stage structures and/or several second of three-stage structures are not formed Number.Below citing provide sequentially for 1 C-A-B and 1 B-C-A the first leading symbol time-domain expression, and sequentially be 1 The time-domain expression of the second leading symbol of a B-C-A and 1 C-A-B.
So, the time-domain expression of the first leading symbol are as follows:
(formula 7)
The time-domain expression of second leading symbol are as follows:
(formula 8)
The time-domain expression of the first leading symbol and the second leading symbol can infer other C-A-B and B-C-A groups according to this It closes and is formed, it is no longer repeated herein.
As when C-A-B structure and the cascade of B-C-A structure, can solve small inclined estimation under dangerous delays in above situation The problem of failure.When dangerous delays cause C sections and when A section counteractings, the BC section of the CB section of first structure and second structure is still Timing Synchronization can be so used to and estimated small partially.
Four symbols of transmission are set by the quantity that leading symbol includes at least one time-domain symbol, are given below several More preferably four time-domain symbol structures are sequentially arranged as any one in following several structures:
(1) C-A-B, B-C-A, C-A-B, B-C-A；Or
(2) C-A-B, B-C-A, B-C-A, B-C-A；Or
(3) B-C-A, C-A-B, C-A-B, C-A-B；Or
(4) C-A-B, B-C-A, C-A-B, C-A-B；Or
(5) C-A-B, C-A-B, C-A-B, B-C-A；Or
(6) C-A-B, C-A-B, C-A-B, C-A-B or
(7) C-A-B, C-A-B, B-C-A, B-C-A.
Wherein, such as the structure of such four time-domain symbols of (1) C-A-B, B-C-A, C-A-B, B-C-A, cascade effect Fruit plays maximum.Such as the structure of such four time-domain symbols of (2) C-A-B, B-C-A, B-C-A, B-C-A, by the portion successive character A The protection interval divided is elongated, and usual first symbol is known signal, therefore uses C-A-B.
Enumerate a preferred embodiment of three-stage structure, NAIt is 2048, if LenCIt is 520, LenB=504, N1_1= 1544, N1_2=1528, enabling P1_A (t) is the expression formula of time domain main body A, then can derive the time domain table of C-A-B and B-C-A It is up to formula
(formula 9)
And
(formula 10)
Further, fSHIt may be selected to be 1/ (1024T) or 1/ (2048T).
Further, the different starting points for choosing second part B from first part A can be utilized to carry out identifying emergent broadcast, i.e., By choosing different N1, or N1_1 and N1_2, by being copied to B sections of starting point come identifying emergent broadcast system.Such as C- The symbol of the three-stage structure of A-B, N1_1=1544 mark conventional system, and N1_1=1528 identifying emergent broadcast system.Compare again Such as, the symbol of the three-stage structure of B-C-A, N1_2=1528 mark conventional system, and N1_2=1544 identifying emergent broadcast system.
In the leading symbol generation method of transmitting terminal, include following such generation step:
Inversefouriertransform IFFT, which is carried out, based on frequency domain subject sequence column-generation subcarrier in frequency domain obtains time domain main running signal A, The time-domain symbol with three-stage structure as C-A-B or B-C-A is formed as time domain main running signal A again, to form this implementation With the leading symbol of at least one time-domain symbol in example.
It is targeted to the method for reseptance of leading symbol of the invention to be applicable in above by the description done in conjunction with Fig. 1 to Fig. 4 Transmitting terminal at least one time-domain symbol with predetermined three-stage structure be illustrated.
In the present embodiment, the method for reseptance of provided leading symbol has first to make a reservation for three sections at least one The time-domain symbol of spatial structure or second predetermined three sections of spatial structures, the method for reseptance of the leading symbol have following steps:
Step S1: physical frame is handled and is received in baseband signal with the presence or absence of expectation with obtaining baseband signal and judging Leading symbol；
Step S2: position of the received leading symbol in physical frame is determined；And
Step S3: signaling information entrained by the leading symbol is solved in the presence of signaling information.
Wherein, it whether there is in judging baseband signal and it is expected to contain preliminary Timing Synchronization in received leading symbol step Mode, which includes:
Using first predetermined three sections of spatial structures and/or second predetermined three sections of spatial structures it is distinctive deal with relationship and/or Modulation relationship obtains one group to delay sliding auto-correlation is carried out after the necessary inverse processing of baseband signal progress and/or signal demodulation Or multiple groups accumulated correlation values；And
It, will after carrying out delay relationship match and/or specific predetermined mathematical operation based on one or more groups of accumulated correlation values Operation values are used for initial timing synchronization, primarily determine leading symbol in the position of physical frame,
Wherein, when leading symbol includes multiple three-stage structures, can respectively obtain in multiple groups three-stage structure Part III C and Three accumulated correlation values between first part A, between first part A and second part B and Part III C and second part B That is Uca' (n), Ucb' (n), Uab' any one in (n) or any at least two, based on one group in multiple groups accumulated correlation values or Multiple groups carry out delay relationship match and/or predetermined mathematical operation obtains final operation values, which are used for initial same Step.
It is below CAB structure to first be directed to, subsequent is the preliminary Timing Synchronization side of the time-domain symbol of BCA structure entirely Formula is illustrated.
Wherein, meet formula N1_1+N1_2=2NA-(LenB+Lenc), and N1_1+LenB=NA。
Specifically, NAIt is 2048, if LenCIt is 520, LenB=504, N1_1=1544, N1_2=1528, fSH=1/ For (2048T).
Wherein, peculiar using C-A-B and/or B-C-A when leading symbol has the spatial structure of C-A-B or B-C-A Deal with relationship and/or modulate relationship, carry out delay sliding after carrying out necessary inverse processing and/or signal demodulation to baseband signal Auto-correlation obtains 1 group or multiple groups accumulated correlation values, then based on one or more groups of accumulated correlation values carry out delay relationship match and/ Or after specific mathematical operation, operation values is used for initial timing synchronization, primarily determine leading symbol in the position of physical frame.It lifts For example, it is as follows that delay sliding auto-correlation obtains accumulated correlation values formula:
U1(n)=r (n) r*(n-NA)
(formula 11)
It may be selected to U1' (n) carry out energy normalized obtain U1s'(n)。
I.e.(formula 12)
Energy normalized can also take other methods, U1(n) conjugate operation * is taken in, can also be realized by r (n), and r (n- NA) conjugation is not taken.
In the structure of each C-A-B or B-C-A, CA, AB and CB tri- based on identical content can be obtained respectively and is added up Correlation.
Carry out to A sections of identical parts that sliding delay is related, and the step of paying attention to above-mentioned energy normalized can add using C sections On, which is not described herein again.Three correlations: U can be obtained in the structure of every 1 C-A-B or B-C-Aca' (n), Ucb' (n), Ucb'(n)
U1(n)=r (n) r*(n-NA)
(formula 13)
It is related that sliding delay is carried out using the B sections of parts for only modulating frequency deviation identical as C section:
When C-A-B structure,
(formula 14)
When B-C-A structure,
(formula 15)
It is related that sliding delay is carried out using the B sections of parts for only modulating frequency deviation identical as A section:
When C-A-B structure,
(formula 16)
When B-C-A structure,
(formula 17)
Wherein, corr_len can use 1/fSHT to avoid continuous wave CO_2 laser, or takes LenBSo that peak value is sharp.
And when leading symbol includes multiple time-domain symbols and time-domain symbol is all made of three-stage structure, multiple groups CA can be obtained, Tri- accumulated correlation values of AB and CB, i.e. Uca' (n), Ucb' (n), Uab' (n), utilize the Uca' (n), Ucb' (n), Uab' in (n) Any one any at least two obtains one group of accumulated correlation values, carries out delay relationship based on one group in multiple groups value and multiple groups Matching and/or mathematical operation, obtain final operation values, which are used for initial synchronisation.
For example, being arranged as C-A-B, B-C-A, B-C- for for the preferred K time-domain symbols with three-stage structure A, first symbol is C-A-B structure when B-C-A ..., B-C-A., and subsequent K-1 are all B-C-A structures, are obtained It should be noted that can also With cumulative related to obtain using any one in the K time-domain symbols with predetermined three sections of spatial structures or any at least two Value, the present invention is not defined to using the quantity of time-domain symbol, can all of and also partially utilize.
It can then incite somebody to actionIn one or more carry out delay pass It is added or is averaged again after system's matching and/or phase adjustment, obtain U to the endca(n).This is because they are with identical Phase value.Delay matching includes following all or part, is exemplified below:
And
Wherein, it is contemplated that f in embodimentSH=1/ (2048T), NAIt is 2048, if LenCIt is 520, LenB=504, i.e. (NA+ LenB+LenC)=3072, thereforePhase adjustment is carried out, multiplied by ejπ。
It can incite somebody to actionIn one or more prolonged It is added or is averaged again after slow relationship match and/or phase adjustment, obtain U to the endcb-ab(n).This is because they have There is identical phase value.Delay matching includes following all or part, is exemplified below:
And
Wherein, it is contemplated that f in embodimentSH=1/ (2048T), NAIt is 2048, if LenCIt is 520, LenB=504, i.e. (NA+ LenB+LenC)=3072, thereforePhase adjustment is carried out, multiplied by ejπ。
It can incite somebody to actionIn one or more carry out delay pass It is added or is averaged again after system's matching and/or phase adjustment, obtain U to the endab-cb(n).Delay matching includes following complete Portion or part, are exemplified below:
And
Wherein, it is contemplated that f in embodimentSH=1/ (2048T), NAIt is 2048, if LenCIt is 520, LenB=504, i.e. (NA+ LenB+LenC)=3072, thereforeIt will be multiplied by ejπ.
Finally, being based on Uca(n) and Ucb-ab(n) and Uab-cb(n) one or more carries out delay matching again and carries out specific Operation, delay matching here includes following all or part, be exemplified below:
Uca(n), Ucb-ab(n),Uab-cb(n-NA)
Initial timing synchronization is completed based on operation result, optional network specific digit operation can be absolute value addition.For example take maximum Initial timing synchronization is completed in value position.
It should be noted that consider the influence of systematic sampling clock deviation, it in the above-described embodiments, can will be some of Postpone the due delay number plus-minus one of correlator, three delay numbers after forming itself and plus-minus one postpone number according to these three Implement sliding delay auto-correlation, reselection correlated results it is the most apparent that, can further estimate sampling frequency deviation.
Fig. 5 is the logical schematic of the Timing Synchronization mode of four time-domain symbols in the embodiment of the present invention.
In Fig. 5, A indicates NA, B expression LenB, C expression LenC, respectively the 4 of CAB-BCA-BCA-BCA time-domain symbols this The logical schematic of the specific Timing Synchronization mode of sample, Fig. 5 also provide the arithmetic logic of small inclined estimated value.
It illustrates, when the method for reseptance of leading symbol of the invention is after completion timing synchronizes, takes Uca(n) in most The angle being worth greatly, obtains first angle, to calculate the first small inclined estimated value, then by Ucb-ab(n) and Uab-cb(n) it is conjugated phase After multiplying, it is also maximized corresponding angle, obtains second angle, to calculate the second small inclined estimated value.It is small partially based on first Estimated value and the second small inclined estimated value, can be obtained small inclined estimated value, the part calculated as marked FFO in Fig. 5.
Not shown in figure, the embodiments of the present invention also provide a kind of reception devices of leading symbol, for receiving hair The time-domain symbol that at least one has first predetermined three sections of spatial structures or second predetermined three sections of spatial structures transmitted by sending end, The reception device of the leading symbol includes: reception judging part, is handled physical frame to obtain baseband signal and judge base band With the presence or absence of the received leading symbol of expectation in signal；Positioning region determines position of the received leading symbol in physical frame； And analysis unit, signaling information entrained by the leading symbol is solved in the presence of signaling information.
Wherein, it receives judging part and/or preliminary time synchronization unit is contained in positioning region, preliminary time synchronization unit is at least used In:
Using first predetermined three sections of spatial structures and/or second predetermined three sections of spatial structures it is distinctive deal with relationship and/or Modulation relationship obtains one group to delay sliding auto-correlation is carried out after the necessary inverse processing of baseband signal progress and/or signal demodulation Or multiple groups accumulated correlation values；And
It, will after carrying out delay relationship match and/or specific predetermined mathematical operation based on one or more groups of accumulated correlation values Operation values are used for initial timing synchronization, primarily determine leading symbol in the position of physical frame,
When leading symbol includes multiple three-stage structures, Part III C and first in multiple groups three-stage structure can be respectively obtained Three accumulated correlation values between the A of part, between first part A and second part B and Part III C and second part B are Uca' (n), Ucb' (n), Uab' any one in (n) or any at least two, based on one group or more in multiple groups accumulated correlation values Group carries out delay relationship match and/or predetermined mathematical operation obtains final operation values, which is used for initial synchronisation.
The generating means and reception device of leading symbol provided in this implementation respectively can in above-described embodiment before Generation method, the method for reseptance institute difference for leading symbol are corresponding, then possessed structure and technology essential factor can be by giving birth in device It accordingly converts to be formed at method, repeat no more in this description will be omitted.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair Bright technical solution makes possible variation and modification, therefore, anything that does not depart from the technical scheme of the invention, and according to the present invention Technical spirit any simple modifications, equivalents, and modifications to the above embodiments, belong to technical solution of the present invention Protection scope.

Claims (8)

1. a kind of method of reseptance of leading symbol has first predetermined three sections of spatial structures or second predetermined three at least one The time-domain symbol of section spatial structure, which is characterized in that there are following steps:
Physical frame is handled received leading with the presence or absence of it is expected in the baseband signal to obtain baseband signal and judge Symbol；
Determine position of the received leading symbol in physical frame；And
The signaling information entrained by the leading symbol is solved in the presence of signaling information,
Wherein, it whether there is in judging the baseband signal and it is expected to contain preliminary Timing Synchronization in received leading symbol step Mode, which includes:
Relationship is dealt with relationship and/or modulates using first predetermined three sections of spatial structures and/or second predetermined three sections of spatial structures, One or more groups of cumulative correlations are obtained to delay sliding auto-correlation is carried out after baseband signal progress inverse processing and/or signal demodulation Value；And
After carrying out delay relationship match and/or predetermined mathematical operation based on one or more groups of accumulated correlation values, operation values are used for Initial timing synchronization, primarily determine leading symbol in the position of physical frame,
When leading symbol includes K time-domain symbol, it is respectively provided with first predetermined three sections of spatial structures or second predetermined three sections of time domains Structure generates the first final operation values using the correlation of Part III C in all three-stage structure time-domain symbols and first part A, Utilize the correlation and subsequent K-1 B-C-A of Part III C in first C-A-B structure time-domain symbol and second part B First part A and the correlation of second part part B generate the second final operation values in structure time-domain symbol, utilize first C- The correlation of first part A and second part B and subsequent K-1 B-C-A structure time-domain symbol in A-B structure time-domain symbol The correlation of middle Part III C and second part B generates the final operation values of third, finally based on the first final operation values, second One or more groups of in the final operation values of operation values, third carry out delay relationship match and/or predetermined mathematical operation obtains finally The final operation values are used for initial synchronisation by operation values.
2. the method for reseptance of leading symbol as described in claim 1, it is characterised in that:
Wherein, if using K time-domain symbol, first predetermined three sections of spatial structures or second predetermined three sections of time domain knots are respectively provided with Structure when the K time-domain symbol is arranged as first C-A-B, subsequent K-1 B-C-A, has using the K and makes a reservation for three sections of time domains At least one of time-domain symbol of structure is multiple, obtains accumulated correlation values
It willIn one or more carry out delay relationship match and/ Or be added or be averaged again after phase adjustment, obtain the first final operation values Uca(n), delay matching relationship includes following It is all or part of:
And
It willIn one or more carry out delay relationship It is added or is averaged again after matching and/or phase adjustment, obtain the second final operation values Ucb-ab(n), delay matching relationship Include following all or parts:
And
It willIn one or more carry out delay relationship match And/or be added or be averaged again after phase adjustment, obtain the final operation values U of thirdab-cb(n), delay matching relationship includes Following all or parts:
And
Finally, being based on the first final operation values Uca(n) and the second final operation values Ucb-ab(n) and the final operation values U of thirdab-cb (n) one or more carries out delay matching again and carries out certain operations, and delay matching relationship includes following all or part:
Uca(n), Ucb-ab(n),Uab-cb(n-NA)。
3. the method for reseptance of leading symbol as claimed in claim 2, it is characterised in that:
Wherein, there is any one in the time-domain symbols of predetermined three sections of spatial structures using K or any at least two obtain The accumulated correlation values.
4. the method for reseptance of leading symbol as described in claim 1, it is characterised in that:
Wherein, at least one described time-domain symbol with predetermined three sections of spatial structures,
The three-stage structure that first time-domain symbol has is prefix-ontology-suffix formula three-stage structure CAB and subsequent time domain accords with Number three-stage structure having is to sew-prefix-body type three-stage structure BCA in advance,
The length of the first part is set as NA, the length of the second part is set as LenB, by the length of the Part III Degree is set as LenC, second part B starting point is chosen in the prefix-ontology-suffix formula three-stage structure CAB corresponds to first part A The first sampled point serial number be set as N1_1, selection second part B starting point pair will be sewed in-prefix-body type three-stage structure BCA in advance It should be set as N1_2 in the second sampled point serial number of first part A, meet following formula:
N1_1+N1_2=2NA-(LenB+Lenc), and N1_1+LenB=NA。
5. the method for reseptance of leading symbol as described in claim 1, it is characterised in that:
Wherein, by the delay relevant treatment of wherein predetermined quantity using delay number carry out plus-minus one, be formed with itself and Delay number itself plus a delay number after each plus-minus one, the delay number that subtracts one, implement sliding according to this three delay numbers and postpone from phase It closes, then a correlated results is selected with predetermined selected rule.
6. the method for reseptance of leading symbol as claimed in claim 4, which is characterized in that further include:
After selecting a correlated results with predetermined selected rule, sampling frequency deviation is estimated based on correlated results.
7. the method for reseptance of leading symbol as described in claim 1, which is characterized in that
After completing the preliminary Timing Synchronization of leading symbol, U is takenca(n) angle of maximum value obtains first angle in, calculates One small inclined estimated value, then by Ucb-ab(n) and Uab-cb(n) it after conjugate multiplication, is also maximized corresponding angle and obtains second jiao Degree, so that the second small inclined estimated value is calculated,
Small inclined estimated value is obtained based on the first small inclined estimated value and the second small inclined estimated value.
8. a kind of reception device of leading symbol, for receive transmitted by transmitting terminal at least one have first it is three sections predetermined when The time-domain symbol of domain structure or second predetermined three sections of spatial structures characterized by comprising
Judging part is received, physical frame is handled to obtain baseband signal and judge in the baseband signal with the presence or absence of expectation Received leading symbol；
Positioning region determines position of the received leading symbol in physical frame；And
Analysis unit solves the signaling information entrained by the leading symbol in the presence of signaling information,
Wherein, preliminary time synchronization unit is contained in the reception judging part and/or positioning region, and preliminary time synchronization unit is at least used In:
Relationship is dealt with relationship and/or modulates using first predetermined three sections of spatial structures and/or second predetermined three sections of spatial structures, One or more groups of cumulative correlations are obtained to delay sliding auto-correlation is carried out after baseband signal progress inverse processing and/or signal demodulation Value；And
After carrying out delay relationship match and/or predetermined mathematical operation based on one or more groups of accumulated correlation values, operation values are used for Initial timing synchronization, primarily determine leading symbol in the position of physical frame,
When leading symbol includes K time-domain symbol, it is respectively provided with first predetermined three sections of spatial structures or second predetermined three sections of time domains Structure generates the first final operation values using the correlation of Part III C in all three-stage structure time-domain symbols and first part A, Utilize the correlation and subsequent K-1 B-C-A of Part III C in first C-A-B structure time-domain symbol and second part B First part A and the correlation of second part part B generate the second final operation values in structure time-domain symbol, utilize first C- The correlation of first part A and second part B and subsequent K-1 B-C-A structure time-domain symbol in A-B structure time-domain symbol The correlation of middle Part III C and second part B generates the final operation values of third, finally based on the first final operation values, second One or more groups of in the final operation values of operation values, third carry out delay relationship match and/or predetermined mathematical operation obtains finally The final operation values are used for initial synchronisation by operation values.
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Families Citing this family (7)

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Publication number Priority date Publication date Assignee Title
US9843845B2 (en) 2012-11-28 2017-12-12 Sinclair Broadcast Group, Inc. Terrestrial broadcast market exchange network platform and broadcast augmentation channels for hybrid broadcasting in the internet age
KR20220093391A (en) 2014-08-07 2022-07-05 코히어런트 로직스, 인코포레이티드 Multi-partition radio frames
CA2956957C (en) 2014-08-07 2019-02-12 ONE Media, LLC Dynamic configuration of a flexible orthogonal frequency division multiplexing phy transport data frame
CN110266426B (en) 2014-08-25 2021-03-05 第一媒体有限责任公司 Dynamic configuration of flexible OFDM PHY Transmission data frame preamble
TWI809802B (en) 2015-03-09 2023-07-21 美商第一媒體有限責任公司 Communication systems, methods for wireless communication and transmitting devices
WO2016164728A1 (en) 2015-04-08 2016-10-13 One Media Llc Advanced data cell resource mapping
CN109716682B (en) 2016-04-07 2021-04-16 辛克莱广播集团公司 Next generation terrestrial broadcast platform looking at the internet and moving towards emerging 5G network architectures

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101197805A (en) * 2007-12-21 2008-06-11 北京北方烽火科技有限公司 Lead code detecting method of subscriber station receiver
CN101340420A (en) * 2008-08-18 2009-01-07 华为技术有限公司 Method and device for timing metric
CN101960810A (en) * 2008-03-07 2011-01-26 诺基亚公司 System and methods for receiving OFDM symbols having timing and frequency offsets
CN107248968A (en) * 2015-01-30 2017-10-13 上海数字电视国家工程研究中心有限公司 The generation method of leading symbol

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1988525B (en) * 2005-12-23 2011-05-11 中兴通讯股份有限公司 Synchronizing method for orthogonal frequency division multiplex system
CN101079688B (en) * 2006-05-23 2010-09-01 中兴通讯股份有限公司 A synchronization method in orthogonal frequency division multiplexing system
JP2008048239A (en) * 2006-08-18 2008-02-28 Nec Electronics Corp Symbol timing detection method and device, preamble detection method and device
CN101374131B (en) * 2007-08-20 2013-01-30 株式会社Ntt都科摩 Method and apparatus of timing synchronization, leading symbol as well as method and apparatus for generating the same
CN101583185B (en) * 2008-05-15 2012-05-30 富士通株式会社 Synchronous tracking device and synchronous tracking method in broadband wireless communication system
CN101677478B (en) * 2008-09-18 2012-02-22 王智 System, transmitting device and receiving device for eliminating interference of adjacent base station, and method thereof
JP5294030B2 (en) * 2009-07-24 2013-09-18 ソニー株式会社 Receiving apparatus and method, and program
CN101820301B (en) * 2010-04-27 2012-12-19 安徽创毅通信科技有限公司 Method for generating random access pilot in low complexity in long term evolution system
CN102263767B (en) * 2011-08-30 2013-12-18 北京北方烽火科技有限公司 Frame synchronization and frequency offset estimation method and device used for wireless communication
CN103532899B (en) * 2013-07-31 2016-07-06 上海数字电视国家工程研究中心有限公司 Time domain OFDM synchronizing symbol generates and demodulation method, data frame transmission method
CN105743624B (en) * 2014-12-10 2019-02-26 上海数字电视国家工程研究中心有限公司 The generation method and method of reseptance of leading symbol
CN106685880A (en) * 2014-07-10 2017-05-17 上海数字电视国家工程研究中心有限公司 Physical frame preamble symbol receiving and processing method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101197805A (en) * 2007-12-21 2008-06-11 北京北方烽火科技有限公司 Lead code detecting method of subscriber station receiver
CN101960810A (en) * 2008-03-07 2011-01-26 诺基亚公司 System and methods for receiving OFDM symbols having timing and frequency offsets
CN101340420A (en) * 2008-08-18 2009-01-07 华为技术有限公司 Method and device for timing metric
CN107248968A (en) * 2015-01-30 2017-10-13 上海数字电视国家工程研究中心有限公司 The generation method of leading symbol

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