CN106031063A

CN106031063A - Transmitting apparatus, receiving apparatus, and control methods thereof

Info

Publication number: CN106031063A
Application number: CN201580008642.9A
Authority: CN
Inventors: 金敏镐; 韩廷溢
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2014-02-13
Filing date: 2015-02-10
Publication date: 2016-10-12
Anticipated expiration: 2035-02-10
Also published as: CN106031063B

Abstract

A transmitting apparatus is disclosed. The transmitting apparatus includes a preamble symbol inserter configured to insert to a frame a preamble symbol including a signaling information, a guard interval inserter configured to insert guard intervals to both ends of the preamble symbol, and a transmitter configured to transmit a frame including the preamble symbol and the guard intervals, wherein one of the guard intervals which are inserted to both ends of the preamble symbol comprises a pseudo random noise (PN) sequence and another guard interval includes one between the PN sequence and a part of the signaling information. Accordingly, no separate algorithm to estimate size of FFT of the preamble symbol and the guard interval is necessary, robust signal detection and synchronization is enabled by the PN sequence inserted to the guard interval, and compensation of interference which is generated under multipath channel environment deems to be easier.

Description

Transmission equipment, reception equipment and control method thereof

Technical field

The equipment consistent with exemplary embodiment and method relate to a kind of transmission equipment, reception equipment and control method thereof, More particularly, a kind of transmission equipment using OFDM (OFDM) scheme and the equipment of reception and controlling party thereof are related to Method.

Background technology

In recent years, broadcast communication services has had multi-functional, broadband and high-quality feature.Specifically, along with electronics The development of technology, the high-end apparatus for receiving broadcasting of such as high definition digital television (HDTV) and the movement of such as smart phone Device or mancarried device are more and more universal, therefore for the various broadcast signal received methods of various broadcast service or for respectively The needs of the support planting broadcast service increase the most.

As meeting an example of such needs, develop such as second filial generation European terrestrial digital video broadcasting (DVB-T2) broadcast communication standard.35 or more countries in the whole world including Europe have employed DVB- T2.DVB-T2 is by applying up-to-date technology (such as, low-density checksum (LDPC) coded method, 256 quadrature amplitude modulation (QAM) method etc.) realize increase and the high bandwidth efficiency of transmission capacity, therefore DVB-T2 can provide such as with limited frequency band The various high-quality service of HDTV.

T2 frame for DVB-T2 by one P1 symbol of use and includes that multiple P2 symbols of signaling information overcome greatly The problem that the signaling information of amount is inserted into all symbols redundantly.

Summary of the invention

Technical problem

But, even if successfully be detected signal by P1 symbol, it is decoded required information as to P2 symbol Protection interval is still unknown, it is therefore desirable to for estimating the single algorithm of the size at protection interval.

Accordingly, it would be desirable to include a large amount of signaling information and realize the knot of the leading symbol that strong simultaneously operating and channel are estimated Structure.

Solution

Exemplary embodiment can overcome disadvantage mentioned above and other shortcoming not described above.It should be understood, however, that exemplary reality Execute example and need not overcome disadvantages mentioned above, and any of above problem can not be overcome.

Exemplary embodiment relates to sending out of a kind of two ends that the protection interval including predetermined sequence is inserted into leading symbol Send equipment and reception equipment and control method thereof.

According to exemplary embodiment, it is provided that a kind of transmission equipment, described transmission equipment comprises the steps that leading symbol inserts Device, is configured to be inserted in frame the leading symbol including signaling information；Protection interval inserter, is configured to many Individual protection interval is inserted into the two ends of leading symbol；Transmitter, is configured to transmission and includes leading symbol and the plurality of protection Interval frame, wherein, the plurality of protection interval in one protection interval include pseudo noise (PN) sequence and another Protection interval includes in a part for PN sequence and signaling information.

The protection interval of the front end being inserted into leading symbol can include PN sequence, is inserted into the protection of the rear end of leading symbol Interval includes in a part for PN sequence and signaling information.

Protection interval inserter is also configured to produce the PN sequence that size is identical with the size of leading symbol, and will produce The PN sequence that each protection that a part for raw PN sequence is inserted in the plurality of protection interval is spaced or will produce respectively The different piece of row is inserted into the plurality of protection interval.

Protection interval inserter is also configured to produce the PN sequence with predefined size, and the PN sequence of generation is inserted Enter in leading symbol.

The PN sequence produced can have the size identical with leading symbol, and wherein, protection interval is also configured to produce Raw PN sequence is reduced into predefined size, and the PN sequence after reducing is inserted in leading symbol.

The size of leading symbol or fast Fourier transform (FFT) size can be 8K, are included between the plurality of protection The size of the PN sequence in each protection interval in every can be 3648 sampling points.

According to another exemplary embodiment, it is provided that a kind of reception equipment, described reception equipment comprises the steps that receptor, quilt It is configured to receive data symbol, include the leading symbol of signaling information and be inserted into multiple protection intervals at leading symbol two ends, Wherein, a protection interval in the plurality of protection interval includes that PN sequence and another protection interval include PN sequence and letter Make in a part for information；Lock unit, is configured to the PN sequence based on being included in the plurality of protection interval and mends Repay leading symbol and perform synchronization；Channel estimator, is configured to perform channel based on the leading symbol after compensating and estimates；Compensate Device, is configured at least one in a part based on the signaling information being included in the plurality of protection interval and PN sequence Compensate inter-carrier interference/intersymbol interference (ICI/ISI)；Signal processor, is configured to from channel estimator and compensator Output detections signaling information, and based on the signaling information detected, the data symbol being included in frame is processed.

Lock unit can be configured to offset based on PN sequence pair frequency shift (FS) and sampling point estimate, and based on the frequency estimated Rate skew and sampling point migration leading symbol perform synchronization.

If each protection interval in the plurality of protection interval includes PN sequence, then compensator can be configured to remove It is used as the PN sequence of interference signal, and uses a part for the signaling information forming leading symbol to compensate ICI/ISI.

The size of leading symbol or FFT size be the size of 8K, PN sequence can be 3648 sampling points.

According to another exemplary embodiment, it is provided that a kind of method controlling transmission equipment, described method comprises the steps that will wrap The leading symbol including signaling information is inserted in frame；Multiple protection intervals are inserted into the two ends of leading symbol；Before transmission includes Leading symbol and the frame at the plurality of protection interval, wherein, a protection interval in the plurality of protection interval includes PN sequence And another protection interval includes in a part for PN sequence and signaling information.

The protection interval of the front end being inserted into leading symbol can include PN sequence, is inserted into the protection of the rear end of leading symbol Interval can include one in a part for PN sequence and signaling information.

The step inserting protection interval comprises the steps that the PN sequence that generation size is identical with the size of leading symbol；To produce Each protection interval of being inserted in the plurality of protection interval of the part of PN sequence or the PN sequence that will produce respectively Different piece be inserted into the plurality of protection interval.

Described method may also include that and produces the PN sequence with predefined size；The PN sequence of generation is inserted into leading character In number.

The PN sequence produced can have the size identical with leading symbol, and described method may also include that generation PN sequence narrows down to predefined size；And the PN sequence reduced is inserted in leading symbol.

The size of leading symbol or FFT size can be 8K, institute in each protection interval in the plurality of protection interval Including the size of PN sequence can be 3648 sampling points.

According to another exemplary embodiment, it is provided that a kind of control method receiving equipment, described control method comprises the steps that Receive include data symbol, include signaling information leading symbol and be inserted into leading symbol two ends multiple protection interval Frame, wherein, a protection interval in the plurality of protection interval includes that PN sequence and another protection interval include PN sequence With in a part for signaling information；Leading symbol is compensated also based on the PN sequence being included in the plurality of protection interval Perform synchronization；Perform channel based on the leading symbol after compensating to estimate；Based on the signaling being included in the plurality of protection interval At least one in a part for information and PN sequence compensates ICI/ISI；Estimate and ICI/ISI compensation from performing channel Leading symbol detection signaling information, and based on the signaling information detected, the data symbol being included in frame is processed.

The step performing to synchronize comprises the steps that to offset based on PN sequence pair frequency shift (FS) and sampling point to be estimated, and based on estimating The frequency shift (FS) of meter and sampling point migration leading symbol perform synchronization.

As it has been described above, according to various exemplary embodiments, for estimating the FFT size of leading symbol and the big of protection interval Little extra algorithm is dispensable, by the PN sequence being inserted into protection interval realize stalwartness signal detection and with Walk, and the interference that compensation produces under a multipath channel environment becomes easy.

Beneficial effect

Accompanying drawing explanation

Exemplary embodiment is described in detail, above and/or other aspects will be apparent from, wherein by referring to accompanying drawing:

Fig. 1 is the block diagram illustrating the configuration sending equipment according to exemplary embodiment；

Fig. 2 is the frame of the configuration illustrating Advanced Television System committee (ATSC) 3.0 system according to exemplary embodiment Figure；

Fig. 3 is the frame of the configuration illustrating that the signaling used by ATSC 3.0 system according to exemplary embodiment produces equipment Figure；

Fig. 4 is the block diagram of the configuration for describing the DVB-T2 system according to exemplary embodiment.

Fig. 5 is the block diagram for describing the configuration producing signaling information according to exemplary embodiment.

Fig. 6 is the block diagram of the detailed configuration illustrating the OFDM waveform generator according to exemplary embodiment.

Fig. 7 illustrates the structure of the leading symbol according to exemplary embodiment.

Fig. 8-Figure 10 illustrates the leading symbol according to exemplary embodiment and protection interval.

Figure 11 is the diagram of the structure illustrating the leading symbol according to another exemplary embodiment.

Figure 12 and Figure 13 is the diagram for describing the method for inserting PN sequence according to exemplary embodiment.

Figure 14 and Figure 15 is for being more fully described showing of the process producing leading symbol according to exemplary embodiment Figure.

Figure 16 is the block diagram illustrating the configuration receiving equipment according to exemplary embodiment.

Figure 17 is the block diagram illustrating the detailed configuration receiving equipment according to exemplary embodiment.

Figure 18 with Figure 19 be to according to exemplary embodiment for compensating the diagram that the method for ICI/ISI is relevant.

Figure 20 is the block diagram illustrating the configuration receiving equipment according to another exemplary embodiment.

Figure 21 is the block diagram for describing the signal processor according to exemplary embodiment in detail.

Figure 22 is the block diagram of the detailed configuration illustrating the signal processor according to exemplary embodiment.

Figure 23 is the flow chart for describing the control method sending equipment according to exemplary embodiment.

Figure 24 is the flow chart for describing the control method receiving equipment according to exemplary embodiment.

Realize the optimal mode of the present invention

Detailed description of the invention

Hereinafter, with reference to the accompanying drawings to be more fully described exemplary embodiment.

In the following description, when identical label is depicted in different drawings, identical label is for identical Element.There is provided the content (such as, detailed configuration and element) being defined in help to understand exemplary embodiment comprehensively. It is therefore evident that exemplary embodiment can be performed in the case of there is no those contents being specifically defined.Additionally, due to it is existing There are known function or element in technology to obscure exemplary embodiment in terms of unnecessary details, are therefore not described in detail known Function or element.

Fig. 1 is the block diagram illustrating the configuration sending equipment according to exemplary embodiment.

According to Fig. 1, transmission equipment 100 includes leading symbol inserter 110, protection interval inserter 120 and transmitter 130。

The leading symbol including signaling information is inserted in frame by leading symbol inserter 110.Here, signaling information includes Will be explained in greater detail after a while is decoded at least one required parameter to data symbol.It addition, at leading symbol inserter Before leading symbol is inserted in frame by 110, by also by explained in detail below composition Advanced Television System committee (ATSC) the structure (not shown) of 3.0 systems produces described frame.

Protection interval is inserted into the two ends of leading symbol by protection interval inserter 120.Here, the instruction of protection interval is inserted Enter to avoid the section of interference between adjacent signal or symbol.The size depending on fast Fourier transform (FFT) can be 8K, 16K or 32K, the big I at protection interval is different.But, the big I of leading symbol is fixed to according to exemplary reality Executing the preset value of example, correspondingly, the protection being respectively provided with fixed size can be spaced and be inserted into leading character by protection interval inserter 120 Number two ends.

One of protection interval at two ends being inserted into leading symbol can include pseudo noise (PN) sequence, between another protection Every including PN sequence and in a part for the signaling information being included in leading symbol.

In other words, each protection interval in the protection interval at the two ends being inserted into leading symbol can include PN sequence Row, or one of the protection interval at two ends being inserted into leading symbol can include that PN sequence and another protection interval can include PN sequence and one of part of signaling information being included in leading symbol.

Transmitter 130 sends and includes leading symbol and the frame at protection interval.Between above-mentioned leading symbol inserter 110, protection The OFDM waveform generator that may be included in ATSC 3.0 system explained below every inserter 120 and transmitter 130 (does not shows Go out) and structure (not shown) in.

Fig. 2 is the block diagram of the configuration illustrating ATSC 3.0 system according to exemplary embodiment.

With reference to Fig. 2, ATSC 3.0 system 200 can include that input processor 210, Bit Interleaved Coded Modulation (BICM) encode Device 220, architecture processor 230 and transmitter 240.

Multiple inlet flows are divided into multiple base band frame by input processor 210.Specifically, input processor 210 output bag Include at least one physical layer pipe (PLP) of multiple base band frame.

As exemplary embodiment, DVB-T2 system uses PLP concept to have difference by a broadcast channel offer The various broadcast service of modulator approach, different channel encoding rates, different time and unit (cell) weaving length etc..

PLP refers to the single path being processed independently.It is to say, can by multiple radio frequencies (RF) channel send and/ Or receive various service (such as, video, extending video, audio frequency, data stream etc.), and PLP is to send described service by it Path or the stream that sent by path.It is distributed in the gap of multiple RF channel it addition, PLP can be located at according to time interval, Or PLP can be distributed on a RF channel according to time interval.It is to say, PLP can be distributed in one according to time interval On RF channel or on multiple RF channel and sent.

PLP structure is by the input pattern A providing a PLP and provides the input pattern B of multiple PLP to constitute.Specifically Say, when supporting input pattern B, it is possible to provide strong special services, and also send a stream in a distributed way.Therefore, Time-interleaved length can be increased, and time diversity gain can be obtained.It addition, when only receiving specific stream, receiving difference Stream time can close reception equipment and reduced power consumption.Therefore, this can be suitable for the broadcast service for portable mobile device.

Here, time diversity refers to send same signal several times to suppress to pass in sending side according to specified time interval The deterioration of transmission quality, and again synthesize these signals receiving side thus obtain good transmission quality.

In multiple PLP, the common information sent may be included in a PLP and sent to increase efficiency of transmission.PLP0 This function can be performed, be referred to alternatively as common PLP.Can be used in addition to PLP0 sends residue PLP of data and is referred to alternatively as data PLP。

When using these PLP, HDTV service at fixing device, can be received at home, and about the mark of same program Quasi-definition television (SDTV) service is provided to the portable mobile device in moving.It addition, can be by broadcasting station or wide Broadcast content supplier and various broadcast service are supplied to spectators, and also edge region can receive such service.

It is to say, the data sent are mapped at least one signal processing path to produce by input processor 110 Raw base band frame, and perform signal processing for each path.Such as, signal processing can include input signal synchronization, delay compensation, At least one during invalid package is deleted, cyclic redundancy check (CRC) (CRC) coding, head insert, encode, interweave and modulate processes. After a while, it is generated as a transmission frame together with signaling information for the base band frame through signal processing in path, and produce Transmission frame is sent to reception equipment (not shown).

BICM encoder 220 performs forward error correction coding (FEC) to multiple base band frames, and performs constellation mapping and intertexture, And export multiple interleaved base band frame.

Specifically, when multiple randomized base band frames are imported into BICM encoder 220, multiple base band frames are encoded For Bose, Chaudhuri and Hochquenghem (BCH) code, it is encoded as low-density checksum (LDPC) code subsequently.Pass through The base band frame of multiple codings is interleaved by bit interleaver, and according to QPSK (QPSP), 16-QPSK or more The bit of intertexture is mapped to constellation symbol by the constellation size of high QAM.The multiple frames produced by this way are referred to alternatively as Forward error correction (FEC) frame.Subsequently, fec frame interleaved by time.

Signaling information is added to the multiple base band frames exported from BICM decoder 220 to produce by architecture processor 230 OFDM symbol.

Specifically, architecture processor 230 is by through the time-interleaved stream that base band frame scheduling is data cell.Subsequently, exist On frequency domain, data cell is interleaved.ATSC3.0 frame is produced from the data cell interweaved on frequency domain.It follows that be referred to as The physical layer signaling of L1 signaling is inserted into the initial of each ATCS 3.0 frame as the leading symbol with 8K FFT size Point.L1 signaling is for the Fast synchronization of each frame.

The leading symbol inserter 110 of Fig. 1 may be included in said structure processor 230, is included in leading symbol Signaling information can be L1 signaling.

It addition, the leading symbol including L1 signaling information can be inserted at architecture processor by leading symbol inserter 110 The starting point of ATSC 3.0 frame produced in 230.

Thereafter, OFDM waveform generator 240 performs to insert inverse FFT (IFFT) behaviour of ATSC 3.0 frame of leading symbol Make, and be transformed into the signal of time domain.In order to avoid the interference between symbol, protection interval is inserted by OFDM waveform generator 240 Produce base-band analog signal to each symbol and by performing digital-to-analogue conversion for the signal of time domain, and send this signal.

Specifically, OFDM waveform generator 240 is typically based on FFT size and protection compartment (fraction) selects At least one in multiple pilot pattern, and insert pilots in OFDM symbol according to the pilot pattern selected, and send bag Include the stream of the OFDM symbol being inserted with pilot tone.

CP continuous pilot and scattered pilot are inserted in ATSC 3.0 frame by OFDM waveform generator 240 together with data cell. Therefore, receiving equipment (not shown) can use pilot tone to estimate and correcting frequency shift to perform channel.Optionally insert use Tone (tone) in the reservation reducing peak-to-average force ratio (PAPR).

Specifically, the various cells modulate of ATSC 3.0 frame will be inserted into for for reference information known to reception equipment. The information sent by these unit have such as dispersion, continuously, edge (edge), frame starts (frame-start) or frame closes Close the form of (frame-closing) pilot tone.

The protection interval inserter 120 of Fig. 1 and transmitter 130 may be included in above-mentioned OFDM waveform generator 240.With Time, the protection interval with fixed size can be inserted into the leading symbol with default size by protection interval inserter 120 Two ends.

At least one in the protection interval at the two ends being inserted into leading symbol by protection interval inserter 120 includes PN sequence Row, need not be inserted into leading symbol by the single pilot signal being used for channel estimation.

Here, the instruction of pseudo noise (PN) sequence has the feature similar with random noise and has the sequence of specific rule Arrange, and pseudo-random sequence is frequently used for using the mobile communication of spread spectrum communication.This PN sequence should be able to be easy at PN generator Ground produces long length sequence and quickly performs initial synchronisation in the position of mobile communication terminal.

In other words, PN has the function being used as identifier, therefore, is present in leading character when PN sequence is inserted into During the protection interval at number two ends, receive equipment (not shown) and can detect leading symbol, and be used for PN sequence detecting leading The synchronization of symbol and channel are estimated.As result, it is not necessary that before the extra pilot signal being used for channel estimation is inserted into Lead symbol.

If it addition, pilot signal is not inserted into leading symbol, then the section that can store signaling information can be further Increase.Such as, and include use Dx=3 interval insert pilot signal DVB-T2 P2 symbol compared with, be used for storing letter The section making information can increase by percent 30.

Therefore, protection interval inserter 120 can be by being inserted into the two of leading symbol by the protection interval including PN sequence At least one in end improves data transmission efficiency.

Fig. 3 is the frame of the configuration illustrating that the signaling used by ATSC 3.0 system according to exemplary embodiment produces equipment Figure.

With reference to Fig. 3, signaling produces equipment 300 and includes signaling generator 310, signaling BICM encoder 320, frequency interleaver 330 and leading generator 340.

It is various types of to be included in data symbol region that signaling generator 310 produces reception equipment (not shown) PLP is decoded required all signaling informations.It addition, signaling generator 310 can be by relevant to emergency alert system (EWS) Data are inserted into signaling information.Can detect about EWS by processing leading symbol simply it addition, receive equipment (not shown) Data.

Signaling BICM encoder 320 and frequency interleaver 330 are distinguished the most bitwise and to generation in units of frequency Signaling information be interleaved, and leading generator 340 produces and exports the leading symbol including interleaved signaling information.

Fig. 4 is the block diagram of the configuration illustrating the DVB-T2 system according to exemplary embodiment.

Can include that input processor 1100, BICM encoder 1200, frame create with reference to Fig. 4, DVB-T2 transmission system 1000 Device 1300 and manipulator 1400.

Described in the configuration of DVB-T2 transmission system 1000 and the DVB-T2 as one of European digital broadcast standard Configuration identical, therefore will be briefly described DVB-T2 transmission system 1000 configuration.Details can refer to " DVB (DVB)；Frame structure Channel Coding and Modulation for second filial generation Digital Terrestrial Television Broadcast system (DVB-T2) ".

Input processor 1100 produces base band frame from the inlet flow for the data that will be serviced.Here, inlet flow is permissible It is mpeg 2 transport stream (TS), general stream (TS) etc..

BICM encoder 1200 is by determining FEC encoding rate and star according to by the data serviced by the region being sent to Seat order performs coding (fixing PHY frame or mobile PHY frame).The signaling information of the data for being serviced can be by individually BICM encoder (not shown) encode or by the BICM encoder 1200 data serviced processed is compiled Code.

Frame creator 1300 and manipulator 1400 determine for the OFDM parameter of signaling area with for the number that will be serviced According to the OFDM parameter of the data area that will be sent with component frame to, and retaining zone is added the frame of composition, and produce frame.Connect Getting off, performing the modulation for the frame of generation being modulated to radio frequency (RF) signal, and RF signal is sent to reception equipment (does not shows Go out).

As described by fig. 2, form the input processor 210 of ATSC 3.0 system 200, BICM encoder 220, structure Processor 230 and OFDM waveform generator 240 can correspond respectively to the input processor 1100 of Fig. 4, BICM encoder 1200, frame Creator 1300 and manipulator 1400.Equally, leading symbol inserter 110 the most in FIG the operation performed can be created by frame Build device 1300 to perform, protection interval inserter 120 and transmitter 130 operation performed can be performed by manipulator 1400.

Specifically, according to exemplary embodiment, Fig. 5 illustrates to produce and is transmitted, by the DVB-T2 of Fig. 4, the L1 that system 1000 uses The configuration of signaling information, but equipment 300 can be produced with the signaling with ATSC 3.0 system 200 being applied in Fig. 2 Process identical mode and apply the process producing L1 signaling information.

In fig. 5 it is shown that the input processor 1110 and BICM being included in the DVB-T2 transmission system 1000 of Fig. 4 is compiled Code device 1200.Input processor 1100 can include scheduler 1110.BICM encoder 1200 can include L1 signaling generator 1210, FEC encoder 1220-1 and 1220-2, bit interleaver 1230-2, demultiplexer 1240-2 and constellation mapper 1250-1 and 1250-2.BICM encoder 1200 may also include time interleave (not shown).L1 signaling generator 1210 may be included in input In processor 1100 rather than BICM encoder 1200.

N bar service data are mapped to PLP0 to PLPn.Scheduler 1110 determine the position of multiple PLP, modulation and code check with PLP is mapped to the physical layer of T2 frame.It is to say, scheduler 1110 produces L1 signaling.In some cases, scheduler 1110 The multidate information of the rear L1 signaling of present frame can be exported frame creator 1300.L1 signaling can be sent to by scheduler 1110 BICM encoder 1200.L1 signaling includes front L1 signaling and rear L1 signaling.

L1 signaling generator 1210 produces and exports front L1 signaling and rear L1 signaling in the way of differentiation.FEC encoder Front L1 signaling and rear L1 signaling are performed to include shortening and the FEC coding of punching by 1220-1 and 1220-2 respectively.Bit interleaver 1230-2 bitwise performs intertexture to the rear L1 signaling of coding.Demultiplexer 1240-2 controls the bit of component units Order is to control bit vigorousness, and exports the unit including described bit.Two constellation mapper 1250-1 and 1520-2 divide Not by front L1 signaling and rear L1 protocol mapping to planisphere.The front L1 signaling and the rear L1 signaling that are processed by above-mentioned process are defeated Go out to frame creator 1230.Therefore, front L1 signaling and rear L1 signaling can be inserted in frame.

Equipment 300 can be produced by the signaling of Fig. 3 and perform to produce the process of L1 signaling in an identical manner.

With reference to Fig. 6, OFDM waveform generator 240 include tone retain and pilot generator 241, unit multiplexed device 242, IFFT processor 243, PAPR reducer 244, protection interval inserter 245, spectral shaper 246 and digital-to-analogue (D/A) transducer 247。

Tone retain and pilot generator 241 and unit multiplexed device 242 by multiplexing by CP continuous pilot and scattered pilot with Data cell is inserted in ATSC 3.0 frame together.Therefore, receive equipment (not shown) and pilot tone can be used to perform channel estimation, and Correcting frequency shift.Tone reservation can be selectively used for reducing PAPR.

ATSC 3.0 frame being inserted with the tone of pilot tone and reservation is converted to the signal of time domain by IFFT processor 243.

The signal of the PAPR reducer 244 time domain after conversion calculates the size of PAPR pilot tone to reduce PAPR size.Tool Body ground, PAPR is to indicate baseband signal for the reference of the impact of transmission equipment 100, refers to peak power and mean power Ratio.It is to say, the power of transmission equipment 100 typically refers to mean power.But, peak power is present in actual transmission Power in, without being suitably designed peak power, then peak power cause inter-modulation so that broadcasting-quality deterioration.Cause This, transmission equipment 100 must send broadcast singal in the way of PAPR is reduced.

Subsequently, protection interval is inserted into each of the signal that exports from PAPR reducer 244 by protection interval inserter 245 Symbol is to avoid the interference between symbol.

Spectral shaper 246 can perform filtering to the signal from protection interval inserter 245 output and make neighbouring transmission letter Minimum interference between road.Specifically, it is proposed that be filtered improving frequency spectrum shaping and after ofdm signal is generated Accurately distinguish between neighbouring transmission channel.The impulse response of the filtering being commonly used for frequency spectrum shaping reduces the length of useful signal Degree, therefore filter length needs to be reduced.But, there is no the flat filter necessarily high-grade filting of ripple (ripple) Device.Therefore, in order to shorten filter length and make effectively to protect the minimization of loss at interval, need to shorten the same of filter length Time to ofdm signal perform effective spectrum shaping.

The signal defining frequency spectrum can be converted to analogue signal by D/A converter 247.

According to exemplary embodiment, in the detailed configuration of the OFDM waveform generator 240 that figure 6 illustrates, protection interval Inserter 245 and D/A converter 247 are corresponding with the protection interval inserter 120 shown in Fig. 1 and transmitter 130, and in order to Avoid the interference between symbol, can have by protecting interval inserter 120 and transmitter 130 perform to be inserted into protection interval Reduce PAPR each symbol operation and by formed frequency spectrum signal be converted to analogue signal the operation being transmitted.

Up to the present, it has been described that with a part, the transmission equipment 100 leading symbol inserter of ATSC 3.0 system 110, protection interval inserter 120 and the corresponding Fig. 2 of transmitter 130 shown in ATSC 3.0 system 200 whole configure and The all operations performed by leading symbol inserter 110, protection interval inserter 120 and transmitter 130.In detail, will describe Leading symbol according to exemplary embodiment and protection interval.

Fig. 7 is the diagram of the structure illustrating the leading symbol according to exemplary embodiment.With reference to Fig. 7, leading symbol 710 wraps Include for the signaling information to decoding data.When signaling information is inserted in each symbol, generation expense, therefore, In order to reduce such expense, the leading symbol of the beginning being inserted into frame includes that signaling information, leading symbol 710 can be The size of 8K FFT.It addition, can be leading to being inserted into by the method for such as BPSK, QPSK, 16QAM, 64QAM and 256QAM The signaling information of symbol 710 is modulated.

Fig. 8-Figure 10 is for describing the leading symbol according to exemplary embodiment and the diagram at protection interval.

With reference to Fig. 8, a leading symbol 710 includes for processing the whole signaling including data symbol in a frame Information, and such signaling information includes being decoded data symbol required parameter, therefore, leading symbol healthy and strong Decoding is necessary.

Therefore, the protection interval inserter 120 (Fig. 1) for healthy and strong signal detection and initial synchronisation can will include PN sequence The protection interval 720 of row is inserted into the front end of leading symbol 710.

The leading symbol 710 being inserted with the protection interval 720 including PN sequence in front end has and has Cyclic Prefix (CP) structure that the data symbol of-OFDM structure is different, therefore leads due to inter-carrier interference/intersymbol interference (ICI/ISI) The interference caused, can occur performance degradation in multi-path channel environment.

Therefore, suffix (that is, protection interval) can be inserted into the rear end of leading symbol 710 by protection interval inserter 120.

Here, the front end being inserted into leading symbol 710 among the protection interval at the two ends being inserted into leading symbol 710 Protection interval 710 includes PN sequence, and the protection interval being inserted into rear end can include PN sequence and the letter being included in leading symbol Make in a part for information.

Specifically, protection interval inserter 120 the following institute of method of rear end protection interval being inserted into leading symbol Show.

With reference to Fig. 9, the protection interval 720 including PN sequence can be inserted into and include that signaling is believed by protection interval inserter 120 The front end of the leading symbol 710 of breath, and will include that the protection interval 730 of PN sequence is inserted into the rear end of leading symbol 710.This In, the PN sequence of the front-end and back-end being inserted into leading symbol 710 can be mutually the same or different from each other.

Fig. 9 indicates leading symbol 710 and is inserted into the protection interval at two ends and 720 and 730 is indicated as leading symbol.For More accurate, the section 710 including signaling information is leading symbol, but in DVB-T2 system, also includes protection interval Section is counted as P1 symbol, therefore, including the section at protected interval 720 and 730 be seen as leading symbol.

One of data in the protection reproducible each data symbol being included in multiple data symbol of interval inserter 120 Partly and these data are inserted in the protection interval of the front end being inserted into each symbol.A part for data is inserted into often This frame structure of the front end of individual data symbol is indicated as Cyclic Prefix (CP)-OFDM structure.

With reference to Figure 10, the protection interval 720 including PN sequence can be inserted into and include that signaling is believed by protection interval inserter 120 The front end of the leading symbol 710 of breath, replicates a part 740 for the signaling information being included in leading symbol 710, and signaling is believed The part 740 of the duplication of breath is inserted in the protection interval 740-1 of the rear end being inserted into leading symbol 710.

As it has been described above, the part 740 being inserted into the signaling information of the rear end of leading symbol 710 is referred to as cyclic suffix.

It addition, in the protection reproducible each data symbol being inserted in multiple data symbol of interval inserter 120 A part for data, and by the protection interval being inserted partially into the front end being inserted into each data symbol of the duplication of data In.

In the case of the length of frame is assumed maximum 250ms, be inserted into the rear end of leading symbol 710 PN sequence or Cyclic suffix with as frame 0.2% 0.532ms corresponding, therefore, be inserted into the PN sequence of the rear end of leading symbol 710 or follow The expense of ring suffix is not significant grade, the most negligible.

The PN sequence with default size can be inserted in leading symbol 710 by protection interval inserter 120.Specifically, Following with reference to Figure 11.

With reference to Figure 11, insert the protection interval 720 and 730 including PN sequence at the two ends of leading symbol 710, and In leading symbol 710, insert signaling information and PN sequence 750.

In other words, in multi-path channel environment, if the delay section of the signal of each channel is longer, then than protection interval Reception equipment (not shown) cannot only use the PN sequence of the front end of leading symbol 710 perform fully channel estimate, therefore, The PN sequence with default size is also inserted in leading symbol 710 by protection interval inserter 120.

Reception equipment (not shown) can be come by the PN sequence with default size that use is inserted in leading symbol 710 Execution channel is estimated.

Therefore, can have two structures according to the leading symbol of exemplary embodiment.Specifically, it is provided that such knot Structure: the two ends of leading symbol 710 be inserted with include PN sequence protection interval, in leading symbol 710, be inserted with have default The PN sequence of size.

Provide another kind of structure: be inserted with the protection interval including PN sequence in the front end of leading symbol 710, be included in The protection interval of a part for signaling information included in leading symbol 710 is inserted into rear end, has the PN of default size Sequence is inserted in leading symbol 710.

It is inserted with for the two ends of leading symbol 710 and includes the protection interval of PN sequence and insert in leading symbol 710 Entering the structure having the PN sequence with default size, protection interval inserter 120 can insert PN sequence by following two kinds of methods Row.

Protection interval inserter 120 can produce the PN sequence with the size identical with the size of leading symbol 710, and will A part for the PN sequence produced is inserted into each protection interval at the two ends being inserted into leading symbol 710, or will produce Different being inserted partially into of PN sequence be inserted into the protection interval at two ends.

It addition, protection interval inserter 120 can produce the PN sequence that size is identical with the size of leading symbol 710, will produce Raw PN sequence is reduced into predefined size, and the PN sequence reduced is inserted in leading symbol 710.

With reference to Figure 12, protection interval inserter 120 can produce the PN sequence that size is identical with the size of leading symbol 710 10, replicate the part 20 among the PN sequence 10 produced, and the part 20 of duplication is inserted into is inserted into leading symbol 710 Two ends protection interval 720 and 730 in each.It is to say, be inserted into protection interval 720 and 730 PN sequence that This is identical, and wherein, protection interval 720 and 730 is inserted into the two ends of leading symbol 710.

PN sequence 10 identical with leading symbol 710 for size can be reduced into predefined size by protection interval inserter 120, and The PN sequence 750 with predefined size can be inserted in leading symbol 710.

Specifically, the PN that protection interval inserter 120 is identical with the leading symbol 710 of size Yu generation by reducing factor Q Sequence 10 is multiplied, and the output valve from product is added with the signaling information being inserted in leading symbol 710.

With reference to Figure 13, protection interval inserter 120 can produce the PN sequence 10 that size is identical with leading symbol 710, replicate The different piece 20 and 30 among PN sequence 10 produced, and respectively the part 20 and 30 of duplication is inserted into protection interval 720 With 730, wherein, protection interval 720 and 730 is inserted into the two ends of leading symbol 710.In other words, it is inserted between protection PN sequence every 720 and 730 is different from each other, and wherein, protection interval 720 and 730 is inserted into the two ends of leading symbol 710.

It addition, PN sequence 10 identical with leading symbol 710 for size can be reduced into predetermined big by protection interval inserter 120 Little, and the PN sequence 750 with predefined size can be inserted in leading symbol 710.In an identical manner, insert at protection interval Enter after the PN sequence 10 of the identical size of leading symbol 710 reducing factor Q and have and produce is multiplied by device 120, in the future It is added with the signaling information being inserted in leading symbol 710 from the output valve of product.

Here, the size of leading symbol 710 can be 8K, and the size of the PN sequence being inserted into protection interval can be 3648 Individual sampling point, wherein, protection interval is inserted into the two ends of leading symbol 710.As it has been described above, work as size and the protection of leading symbol When the size at interval has fixed value, for estimating that the extra algorithm of described fixed value is dispensable, therefore, data will be improved Transfer rate and efficiency.

The PN sequence of generation is reduced into predefined size and will have the PN sequence of predefined size by protection interval inserter 120 It is inserted in leading symbol.Perform this operation in time domain, and this operation with in frequency domain inserts pilots into leading symbol DVB-T2 is different.

Figure 14-Figure 15 illustrates in greater detail the process producing leading symbol according to exemplary embodiment.

Figure 14 illustrates the leading symbol that size is 8K 810 produced from leading symbol generator 110, and with dotted line leading The section that the protection interval of 3648 sampling point sizes of two ends instruction of symbol 810 will be inserted into.

Protection interval inserter 120 produces size two the PN sequences 820 and 840 identical with leading symbol 810 (i.e., 8K), use reduce the factor Q each part 830 and 850 from the PN sequence 820 and 840 produced produce prefix 830-1 and 850-1 and suffix 830-2 and 850-2.

Whether it addition, be inserted into according to about emergency alert system (EWS) 860 data, protection interval inserter 120 selects One of PN sequence 820 and 840 produced, and the PN sequence of selection is merged in leading symbol 810.Therefore, including identical The protection interval of PN sequence is inserted into the two ends of leading symbol, has the PN sequence of the size predefined size identical with leading symbol A part for row is inserted in leading symbol.

Figure 15 illustrates the leading symbol 901 of the 8K size produced from leading symbol generator 110, and at the leading character produced The two ends of numbers 910 indicate, with dotted line, the section that the protection interval of 3648 sampling point sizes will be inserted into.

It addition, protection interval inserter 120 produce have two the PN sequences 920 identical with leading symbol 910 size and 950.It addition, protection interval inserter 120 reduces factor Q from the different piece 930 and 940 of a PN sequence 920 by use Produce prefix 930-1 and suffix 940-1.

It addition, protection interval inserter 120 is reduced by use from the different section 960 and 970 of another PN sequence 950 Factor Q produces prefix 960-1 and suffix 970-1.

Whether it addition, be inserted into according to the data relevant to emergency alert system (EWS), protection interval 120 selection produces One of PN sequence 920 and 950, and the PN sequence of selection is merged in leading symbol 910.Therefore, including PN sequence not With the protection interval of section be respectively inserted into the two ends of leading symbol, and the size PN sequence identical with leading symbol It is partially inserted in leading symbol.

According to Figure 16, reception equipment 1600 includes receptor 1610, lock unit 1660, channel estimator 1620, compensator 1630 and signal processor 1640.

Receptor 1610 receives the frame including at least one data symbol and leading symbol.Leading symbol includes signaling information And it is inserted into the protection interval at the two ends of leading symbol.Here, one of protection interval being included in the two ends of leading symbol Including PN sequence, another protection interval includes in a part for PN sequence and signaling information.

Here, the protection interval of the front end being inserted into leading symbol includes PN sequence, is inserted into the rear end of leading symbol Protection interval include the part of PN sequence and signaling information.

Lock unit 1660 can compensate leading symbol based at least one the PN sequence being included in protection interval and perform same Step.Specifically, lock unit 1660 can offset based at least one PN sequence estimation frequency shift (FS) and sampling point, based on the frequency estimated Skew and sampling point migration leading symbol perform synchronization.

Channel estimator 1620 performs channel based on the leading symbol compensated and estimates.

At least one in compensator 1630 part based on the signaling information being included in protection interval and PN sequence Compensate inter-carrier interference/intersymbol interference (ICI/ISI).

Signal processor 1640 can from the output detections signaling information of channel estimator 1620 and compensator 1630, and based on The signaling information detected processes data symbol.

With reference to Figure 17, the buffer for simultaneously operating can be included according to the reception equipment 1700 of exemplary embodiment 1710, carrier frequency shift/sampling point frequency shift (FS) (CFO/SFO) estimator 1720 and leading symbol compensator 1730.

Reception equipment 1700 PN sequence based on the front end being positioned at the leading symbol being included in frame performs signal detection.This In, reception equipment 1700 can carry out relevant treatment to detect maximum related value to the PN sequence of PN sequence and pre-stored, and accordingly Ground performs signal detection (that is, the detection of leading symbol) and symbol timing deviation (STO) is estimated.

Here, if including that the protection interval of PN sequence is inserted into the two ends of leading symbol, then receiving equipment 1700 can Detection and the estimation of symbol timing deviation (STO) of leading symbol is performed more accurately based on the PN sequence being inserted into two ends.

When leading symbol being detected, buffer 1710 can cache leading symbol to perform strong same in the starting stage Step operation.

It addition, carrier frequency shift/sampling point frequency shift (FS) (CFO/SFO) estimator 1720 can be inserted into based on being included in PN sequence in the protection interval of the front end of leading symbol estimates CFO/SFO.Equally, if including the protection interval of PN sequence Be included in the two ends of the leading symbol received, then CFO/SFO estimator 1720 can be estimated more accurately based on these PN sequences CFO/SFO。

It addition, leading symbol compensator 1730 can compensate based on the CFO/SFO value estimated by CFO/SFO estimator 1720 The leading symbol of caching in buffer 1710.

Subsequently, channel/STO estimator 1740 can perform channel estimation based on the leading symbol after compensating.

It addition, ICI/ISI eliminates unit 1750 can remove ICI/ISI based on the leading symbol after compensating.

Specifically, eliminate the corresponding compensator of unit 1,750 1630 can protect in interval based on being included in ICI/ISI At least one in signaling information and PN sequence compensates ICI/ISI, if more specifically, being inserted into the guarantor at leading symbol two ends Protect interval and include PN sequence, the most removable PN sequence being used as interference signal, and the signaling information of composition leading symbol can be used A part compensate ICI/ISI.With reference to Figure 18 and Figure 19, this process is described in further detail.

Figure 18 and Figure 19 illustrate according to exemplary embodiment for the method compensating ICI/ISI.

With reference to Figure 18, it is shown that three frames 1800-1,1800-2, the 1800-3 received under a multipath channel environment.In place In the two ends of each leading symbol of the front end of each frame in three frames 1800-1,1800-2,1800-3, including PN sequence Protection interval be inserted into the two ends of leading symbol.In this case, compensator 1630 is based on the first frame first received FFT window 1810 is positioned by the leading symbol of 1800-1.

Compensator 1630 can be removed at the second frame 1800-2 and the 3rd based on the channel estimated at channel estimator 1620 Frame 1800-3 is used as the PN sequence 1820 of interference.Compensator 1630 has known the information about PN sequence, therefore, can only delete PN The PN sequence 1820 being used as interference signal among sequence.

It addition, compensator 1630 can be by using suffix (that is, a part of signaling information being inserted in leading symbol 1830) the PN sequence 1820 removed is compensated.Therefore, the removable whole ISI/ICI of compensator 1630.

In Figure 19, it is shown that three frames 1900-1,1900-2 and the 1900-3 received under a multipath channel environment.Separately Outward, when the protection interval including PN sequence is inserted into the front end of each leading symbol of described three frames, and form leading After the protection interval 1930 that a part 1920 for the signaling information of symbol is replicated and inserts is inserted into each leading symbol During end, FFT window 1910 is positioned by compensator 1630 leading symbol based on last received 3rd frame 1900-3.

In this case, in FFT window 1910, the signaling information of composition leading symbol only detected, but do not detect To being used as to disturb the PN sequence of signal, therefore, ISI/ICI can be readily removable.

Therefore, compensator 1630 can include PN sequence or institute according to the protection interval at the two ends being inserted into leading symbol State that protection one of interval includes PN and another protection interval includes the part of signaling information, use different methods for removing ISI/ICI。

The size of the leading symbol processed by reception equipment 1600 is 8K, is included in the two ends being inserted into leading symbol The size of the PN sequence in protection interval is 3648 sampling points.

With reference to Figure 20, reception equipment 2000 includes receptor 1610, lock unit 1660, channel estimator 1620, compensator 1630, signal processor 1640 and signal processor 1650.Here, it has been described that receptor 1610, channel estimator 1620, benefit Repay device 1630 and signal processor 1640, will the most further this be described.

Signal processor 1650 can extract signaling information from the leading symbol received.Specifically, signal processor 1650 L1 signaling can be extracted and be decoded, and obtaining the value relevant to the information of the protocol version about frame, letter about frame type Breath and the information about the method inserted data in frame.

Signal processor 1640 with reference to Figure 21, Figure 16 or Figure 20 includes demodulator 1641, decoding signals 1642 and stream Generator 1643.

The RF signal execution received is demodulated and performs synchronous detecting according at least one OFDM parameter by demodulator 1641, When synchronization being detected, what demodulator 1641 identified from retaining zone that the information of storage receives is transportable frame or fixing Frame.

In this case, when there is no to predefine the OFDM parameter about signaling area and data area, can pass through The information with the OFDM relating to parameters about the signaling area after retaining zone and data area that obtains performs demodulation.

Decoding signals 1642 performs decoding to the data received.In this case, decoding signals 1620 can make The parameter relevant with the data being stored in each data area is obtained with the signaling information detected from signal processor 1650 (such as, FEC method or modulator approach), and perform decoding.It addition, decoding signals 1642 can based on be included in configurable after Data message in signaling and rear signaling calculates the position that data start.In other words, decoding signals 1642 can be counted Calculate the position of the frame that PLP is sent.

The base band frame received from decoding signals 1642 can be processed and produce and will be serviced by flow generator 1643 Data.

Flow generator 1643 can based on the information relevant with the protocol version of the frame provided by signal processor 1650, about The information of frame type and the information about the method inserting data, the L1 being corrected from error contracts for fixed output quotas raw L2 bag.

Specifically, flow generator 1643 can include Key dithering (De-Jitter) buffer, de-jittering buffer device can based on About the relevant value of the information of the protocol version of the frame provided by signal processor 1650, about the information of frame type with about number According to the information of insertion method, regenerate the accurate sequential for recovering output stream.Therefore, can compensate between multiple PLP The delay synchronized.

According to Figure 22, signal processor 1650 includes demodulator 1651, multiplexer 1652, deinterleaver 1653 and decoder 1654。

Demodulator 1651 receives the signal sent from transmission equipment 100 and is demodulated.Specifically, demodulator 1651 docks The signal received is demodulated, and produces be worth corresponding with LDPC code word, and this value is exported multiplexer 1652.

In this case, corresponding with LDPC code word it is worth the channel value can being indicated as about the signal received.This In, there is the multiple method for determining channel value, such as, the method being used for determining log-likelihood ratio (LLR) value.

Here, LLR value can be indicated as being applied to logarithm from the bit that transmission equipment 100 sends can be 0 or 1 ratio The value of example.Or, LLR value can be the bit value itself determined based on hard decision, and LLR value can be according to from transmission equipment 100 bits sent can be the representative value that determines of section of 0 or 1.

Multiplexer 1652 carries out multiplexing to the output valve of demodulator 1651, and this value is exported deinterleaver 1653.This In, the output valve of demodulator 1651 is corresponding to LDPC code word, such as, and LLR value.

Specifically, multiplexer 1652 is corresponding with the demultiplexer (Fig. 5,1240-2) being arranged in transmission equipment 100 Element, and the de-multiplex operation performed by demultiplexer 1240-2 can be performed on the contrary.It is to say, multiplexer 1652 can use Parallel-to-serial conversion process is changed with LDPC code word corresponding value theed export from demodulator 1651, and to LDPC Code word is worth accordingly and carries out multiplexing.

The output valve of multiplexer 1652 is deinterleaved and exports decoder 1654 by deinterleaver 1653.

Specifically, deinterleaver 1653 is corresponding with the interleaver (Fig. 5,1230-2) being arranged in transmission equipment 100 Element, deinterleaver 1653 can perform the operation performed by interleaver (Fig. 5,1230-2) on the contrary.In other words, deinterleaver 1653 can perform the deinterleaving that be worth corresponding with LDPC code word, in order to the intertexture operation performed by interleaver (Fig. 5,1230-2) Accordingly.Here, be worth corresponding with LDPC code word can be LLR value.

Decoder 1654 is and the corresponding element of FEC encoder 1220-2 being arranged in transmission equipment 100, and can be contrary Ground performs the operation performed by FEC encoder 1220-2.Specifically, decoder 1654 can perform solution based on the LLR value deinterleaved Code also exports L1 signaling.

Figure 23 is the flow chart for describing the method controlling transmission equipment according to exemplary embodiment.

According to the method shown in Figure 23, the leading symbol including signaling information is inserted in frame (S2310).

It addition, at the two ends of leading symbol, insert protection interval (S2320).

Subsequently, the frame (S2330) including that leading symbol and protection are spaced is sent.

Here, one of protection interval at two ends being inserted into leading symbol includes PN sequence, and another protection interval includes PN In a part for sequence and signaling information one.

Specifically, among the protection interval at two ends being inserted into leading symbol, it is inserted into the protection interval bag of front end Including PN sequence, the protection being inserted into rear end is spaced in the part including PN sequence and signaling information.

It addition, the step inserting protection interval can include producing the PN sequence that size is identical with the size of leading symbol, will Each protection that a part for PN sequence is inserted in the protection interval at the two ends being inserted into leading symbol is spaced or will The different part of the PN sequence produced is inserted respectively into the protection interval being inserted into two ends.

Meanwhile, the method shown in Figure 23 may also include and the PN sequence with predefined size is inserted in leading symbol.

Here, insert the step of PN sequence with default size and can include producing that to have size identical with leading symbol PN sequence, and by the PN sequence of generation is narrowed down to default size, the PN sequence of generation is inserted in leading symbol.

It addition, the size of leading symbol is 8K, it is included in the PN in the protection interval at the two ends being inserted into leading symbol The size of sequence is 3648 sampling points.

Figure 24 is the flow chart for describing the method controlling reception equipment according to exemplary embodiment.

According to the method shown in Figure 24, receive the frame including at least one data symbol and leading symbol, wherein, front Lead symbol and include signaling information.Here, protection interval is inserted into the two ends of leading symbol.One of protection interval includes PN sequence Row, another protection interval includes (S2410) in a part for PN sequence and signaling information.

It addition, based at least one the PN sequence being included in protection interval, compensate leading symbol and perform synchronization (S2420)。

Here, the step performing to synchronize includes offseting based at least one PN sequence pair frequency shift (FS) and sampling point estimating Meter, based on the frequency shift (FS) estimated and sampling point migration leading symbol, and performs synchronization.

It addition, perform channel based on the leading symbol after compensating to estimate (S2430).

Subsequently, based at least one being included in the part and PN sequence protecting the signaling information in interval, compensate ICI/ISI(S2440)。

It addition, signaling information can be extracted from performing the leading symbol that channel is estimated and ICI/ISI compensates, and can be based on carrying The signaling information taken processes (S2450) to the data symbol being included in frame.

It addition, the protection interval being inserted into the front end of leading symbol includes PN sequence, it is inserted into the rear end of leading symbol Protection interval includes in a part for PN sequence and signaling information.

Storage can be provided to have the nonvolatile of the program being sequentially performed the above method controlling transmission equipment or the equipment of reception Property computer-readable medium.

Non-transitory computer-readable medium is not configured to temporarily to store medium (such as, the depositor, at a high speed of data Caching or internal memory), and it is configured as semi-permanently storing the device-readable medium of data.Specifically, above-mentioned various application Or program can store and be arranged on non-transitory device-readable medium (such as, compact disk (CD), digital versatile disc (DVD), hard Dish, Blu-ray disc, USB (universal serial bus) (USB), storage card or read only memory (ROM)) in.

According to exemplary embodiment, the block shown in Fig. 1-Fig. 6, Figure 16, Figure 17 and Figure 20-Figure 22 group represented At least one in part, element or unit can be implemented as various quantity perform the hardware of each function above-mentioned, software and/or Firmware.Such as, at least one in these assemblies, element or unit can use can by one or more microprocessor or its He controls the straight flow structure (such as, memorizer, process, logic, look-up table etc.) controlling to perform each function of equipment.Additionally, At least one in these assemblies, element or unit can be embodied as comprising one of the logic function specified for execution Or the module of more executable instruction, a part for journey logic bomb.Additionally, in these assemblies, element or unit at least One may also include the execution processor (such as, central processing unit (CPU)) of each function, microprocessor etc..Although it addition, With bus not shown in top block diagram of FIG, the communication between executive module, element or unit can be carried out by bus.Foregoing exemplary is implemented The functional aspect of example can realize with the algorithm performed on one or more processors.It addition, by frame or process step It is any that rapid assembly, element or the unit represented can use for electrical arrangement, signal processing and/or control, data process etc. The prior art of quantity.

Foregoing example embodiment and advantage are only exemplary, are not necessarily to be construed as limiting present inventive concept.Exemplary Embodiment is readily applicable to other kinds of device or equipment.Additionally, the description of exemplary embodiment is intended to explanation, not Being to limit the scope of present inventive concept, a lot of replacements, modifications and changes will be apparent to those skilled in the art.

Industrial Applicability A

The order list of free text

Claims

1. send an equipment, including:

Leading symbol inserter, is configured to be inserted in frame the leading symbol including signaling information；

Protection interval inserter, is configured to be inserted respectively into multiple protection intervals the two ends of leading symbol；

Transmitter, is configured to send the frame including that leading symbol and the plurality of protection are spaced,

Wherein, a protection interval in the plurality of protection interval includes between pseudo noise (PN) sequence and another protection Every one included in a part for PN sequence and signaling information.

Sending equipment the most as claimed in claim 1, wherein, the protection interval of the front end being inserted into leading symbol includes PN sequence Row, the protection interval of the rear end being inserted into leading symbol includes in a described part for PN sequence and signaling information.

Sending equipment the most as claimed in claim 1, wherein, protection interval inserter is additionally configured to produce size and leading character Number the identical PN sequence of size, and a part for the PN sequence of generation is inserted into each guarantor in the plurality of protection interval Protect interval or the different piece of the PN sequence of generation is inserted respectively into the plurality of protection interval.

Sending equipment the most as claimed in claim 1, wherein, protection interval inserter is additionally configured to generation and has predefined size PN sequence, and the PN sequence of generation is inserted in leading symbol.

Sending equipment the most as claimed in claim 4, wherein, the PN sequence of generation has the size identical with leading symbol,

Wherein, protection interval is additionally configured to narrow down to the PN sequence of generation described predefined size, and the PN sequence after reducing Row are inserted in leading symbol.

Sending equipment the most as claimed in claim 1, wherein, the size of leading symbol is 8K, in the plurality of protection interval The size of PN sequence included in each protection interval is 3648 sampling points.

7. receive an equipment, including:

Receptor, is configured to receive data symbol, include the leading symbol of signaling information and be inserted into leading symbol two ends Multiple protection interval, wherein, the plurality of protection interval in one protection interval include pseudo noise (PN) sequence and Another protection interval includes in a part for PN sequence and signaling information；

Lock unit, is configured to compensate leading symbol based on the PN sequence being included in the plurality of protection interval and perform same Step；

Channel estimator, is configured to perform channel based on the leading symbol after compensating and estimates；

Compensator, is configured to based on a described part and the PN sequence being included in the plurality of signaling information protected in interval In at least one compensate inter-carrier interference/intersymbol interference (ICI/ISI)；

Signal processor, be configured to the output detections signaling information from channel estimator and compensator, and based on detecting The data symbol being included in frame is processed by signaling information.

Receiving equipment the most as claimed in claim 7, wherein, lock unit is configured to based on PN sequence pair frequency shift (FS) and sampling point Skew is estimated, and compensates leading symbol based on the frequency shift (FS) estimated and sampling point skew and perform synchronization.

Receiving equipment the most as claimed in claim 7, wherein, the protection interval of the front end being inserted into leading symbol includes PN sequence Row, the protection interval of the rear end being inserted into leading symbol includes in a part for PN sequence and signaling information.

Receive equipment the most as claimed in claim 7, wherein, if each protection interval in the plurality of protection interval is wrapped Include PN sequence, then compensator is configured to remove the PN sequence being used as interference signal, and uses the signaling letter of composition leading symbol A part for breath compensates ICI/ISI.

11. receive equipment as claimed in claim 7, wherein, the size of leading symbol be the size of 8K, PN sequence be 3648 Sampling point.

12. 1 kinds of methods controlling transmission equipment, described method includes:

The leading symbol including signaling information is inserted in frame；

Multiple protection intervals are inserted into the two ends of leading symbol；

Send and include leading symbol and the frame at the plurality of protection interval,

Wherein, a protection interval in the plurality of protection interval includes pseudo noise (PN) sequence, and another protects interval Including one in a part for PN sequence and signaling information.

13. methods as claimed in claim 12, wherein, the protection interval of the front end being inserted into leading symbol includes PN sequence, The protection interval of the rear end being inserted into leading symbol includes in a part for PN sequence and signaling information.

Multiple protection intervals wherein, are inserted into the step bag at the two ends of leading symbol by 14. methods as claimed in claim 12 Include:

Produce the PN sequence that size is identical with the size of leading symbol；

An each protection interval part for the PN sequence of generation being inserted in the plurality of protection interval, or by generation The different piece of PN sequence is inserted respectively into the plurality of protection interval.

15. 1 kinds of control methods receiving equipment, described control method includes:

Reception includes data symbol, the leading symbol including signaling information and is inserted into multiple protection intervals at leading symbol two ends Frame, wherein, the plurality of protection interval in one protection interval include pseudo noise (PN) sequence and another protection Interval includes in a part for PN sequence and signaling information；

Compensate leading symbol based on the PN sequence being included in the plurality of protection interval and perform synchronization；

Perform channel based on the leading symbol after compensating to estimate；

At least one in a part based on the signaling information being included in the plurality of protection interval and PN sequence compensates Inter-carrier interference/intersymbol interference (ICI/ISI)；

From performing the leading symbol detection signaling information that channel is estimated and ICI/ISI compensates, and based on the signaling letter detected The data symbol being included in frame is processed by breath.