CN101771655A - Apparatus and method for estimating channels in digital broadcasting signal receiver - Google Patents

Apparatus and method for estimating channels in digital broadcasting signal receiver Download PDF

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CN101771655A
CN101771655A CN201010001528A CN201010001528A CN101771655A CN 101771655 A CN101771655 A CN 101771655A CN 201010001528 A CN201010001528 A CN 201010001528A CN 201010001528 A CN201010001528 A CN 201010001528A CN 101771655 A CN101771655 A CN 101771655A
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correlation
signal
interval
corresponding
step
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CN101771655B (en
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金正振
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三星电子株式会社
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Abstract

The invention discloses an apparatus and method for estimating channel in a multi-carrier receiver. In a channel estimating apparatus of a digital broadcasting signal receiver for processing digital broadcasting signal inserted with at least two or more same successive synchronous signals, the apparatus for estimating channel in the multi-carrier receiver comprises a correlator for calculating the correlation based on the received digital broadcasting and reference synchronous signal; a wave-peak detection unit for detecting the correlation position corresponding with the final synchronous signal in the calculated correlation; a windowing unit for selecting a correlation value of a predetermined interval having the position detected by the wave-peak detection unit from the correlation received from the correlator; a channel estimator for estimating the channel by using the correlation value selected by the windowing portion. Therefore the invention can accurately estimate the channel.

Description

数字广播信号接收器的信道估计装置和方法 The digital broadcast signal receiver channel estimation apparatus and method

本申请是申请日为2004年5月21日、申请号为200410047543.5、发明名称为“数字广播信号接收器的信道估计装置和方法”的发明专利申请的分案申请。 This application was filed on May 21, 2004, Application No. 200410047543.5, entitled "a digital broadcast signal receiver channel estimation apparatus and method" filed divisional patent application.

[0002] 技术领域 [0002] Technical Field

[0003] 本发明涉及一种数字广播信号接收器的信道估计装置和方法,特别涉及这样一种信道估计装置和方法,用于处理单载波信号和多载波信号,尤其是时域同步正交频分复用(TDS-OFDM)信号,其中插入了连续同步信号以提高接收信号的信道估计能力。 [0003] The present invention relates to a digital broadcast signal receiver channel estimation apparatus and method, and particularly relates to a channel estimation apparatus and method for processing a single carrier signals and multiple carrier signals, especially when synchronized Orthogonal Frequency Domain channel-estimating capability division multiplexing (TDS-OFDM) signal, wherein the synchronization signal is inserted into the continuous increase of the received signal.

[0004] 背景技术 [0004] BACKGROUND OF THE INVENTION

[0005] 图1是表示常规的一般信道估计装置的方框图。 [0005] FIG. 1 is a block diagram of a conventional general apparatus for channel estimation. 图1中,信道估计装置包括:相关单元100、波峰检测单元105、窗口单元110、阈值单元120、以及信道估计单元130。 In FIG 1, the channel estimation apparatus comprising: a correlation unit 100, the peak detection unit 105, a window unit 110, threshold unit 120, and a channel estimation unit 130. 相关单元100通过使用发送的数字广播信号以及与最初插入到在发送与接收期间预定的数字广播信号中的伪噪声(PN)序列相同的参考同步信号进行预定的计算,来计算相关性。 Correlation unit 100 performs predetermined calculation by using a digital broadcast signal transmitted initially inserted into the well during transmission and reception of the digital broadcast signal in a predetermined pseudo-noise (PN) sequence of identical reference synchronizing signal to calculate the correlation. 波峰检测单元105检测具有最高相关性的波峰的位置,并把位置信息发送到窗口单元110。 Having a peak detection unit 105 detects the position of the highest correlation peak, and transmits the position information to the window unit 110. 窗口单元110从相关单元100计算出的相关性中选择包括从波峰检测单元105接收到的位置信号的某一间隔的相关性。 The window unit 110 selects the correlation unit 100 calculates correlation comprises a correlation of the peak from the detection unit 105 receives the position signal interval. 在低于一个预定的发送阈值的情况下,阈值单元120把低于预定阈值的信号从包括在窗口单元110中被选择的间隔的相关性信号去除,以传输到信道估计单元130。 In the case where the transmission is below a predetermined threshold value, the signal 120 is below a predetermined threshold value from threshold value unit removes a signal interval correlation included in the window unit 110 is selected for transmission to the channel estimation unit 130. 信道估计可以采用使用相关性信号的常规的多种方法。 Various conventional channel estimation methods using a correlation signal may be employed.

[0006] 图2A和图2B是数字广播信号的帧结构视图。 [0006] FIGS. 2A and FIG. 2B is a view of a frame structure of a digital broadcast signal. 图2A是常规单载波信号的帧结构视图,图2B是常规的TDS-OFDM信号的帧结构视图。 2A is a frame configuration view of a conventional single-carrier signal, FIG. 2B is a frame configuration view of a conventional TDS-OFDM signal. PN序列用于信号同步和信道估计,其中,图2A和图2B中插入的PN序列均是同步信号。 PN sequence for synchronization and channel estimation signal, wherein FIGS. 2A and 2B are inserted into the PN sequence synchronization signal.

[0007] 图3是图1中的相关单元100计算的相关性的示意图。 [0007] FIG. 3 is a schematic diagram of the correlation unit 100 calculates correlation in FIG. 当求参考同步信号与发送的数字广播信号之间的相关性时,在数字广播信号和参考同步信号变得相似的点出现波峰170,信道估计装置利用波峰170的相关性进行信道估计。 When the digital broadcast signal between the reference synchronizing signal and the transmission request of the correlation, in the digital broadcast signal and the reference synchronization signal becomes similar peaks appeared point 170, channel estimation means using the correlation peak 170 for channel estimation. 然而,常规的信道估计装置即使在波峰以外的点也会产生恒定的噪声。 However, the conventional channel estimation apparatus even beyond the peak point will generate a constant noise.

[0008] 表1显示了与发送的数字广播信号的同步信息长度对应的最大噪声值。 [0008] Table 1 shows the maximum length of the noise value and the synchronization information transmitted in a digital broadcast signal corresponds. 当最大相关性设定为1时,最大噪声值的单位用分贝来表示。 When the maximum correlation set to 1, the maximum noise value of the unit expressed in decibels.

[0009] 表1 [0009] TABLE 1

[0010] 相应于PN序列长度的相关性的平均噪声 [0010] PN sequence length corresponding to the average noise correlation

[0011] [0011]

[0012] [0012]

[0013] 如果传输数据的同步信号的长度中包含63个码元,则最大噪声值为-19.0849分贝;如果场同步信号为255码元,则最大噪声值为-23.0254分贝;如果场同步信号为511码元,则最大噪声值为-27.7240分贝。 [0013] If the length of the synchronizing signals transmitted data of 63 symbols, the maximum noise value is -19.0849 dB; if the field sync signal is 255 symbols, the maximum noise value is -23.0254 dB; if the field synchronizing signal is element 511 yards, the maximum noise value is -27.7240 dB.

[0014] 由于出现的噪声分量被图1中的阈值单元120去除,当执行信道估计时,便排除了比生成的噪声更小的多径。 [0014] Since the occurrence of noise components are removed in FIG. 1 120 threshold unit, when performing channel estimation, it is smaller than the negative noise generated multipath. 另外,当计算邻近的TDS-OFDM信号的相关性时,可能会产生噪声。 Further, when the correlation calculation adjacent TDS-OFDM signal, noise may be generated. 从而,多载波信号接收系统的信道估计及均衡能力降低到不可能进行精确的信道估计的程度,导致了多载波信号接收系统的信号接收性能恶化的问题。 Thus, the multi-carrier signal channel estimation and reception system is not possible to reduce the degree of balancing accurate channel estimation, resulting in a problem of signal reception performance of a multicarrier signal reception system is deteriorated.

[0015] 因此,为了解决上述问题,本申请人提出了一种多载波信号传输系统,该系统能够提高多载波信号接收系统的信号接收性能,其已向韩国知识产权局申请并获得专利申请号No.01-2002-0064073。 [0015] Accordingly, in order to solve the above problems, the present applicant has proposed a multi-carrier signal transmission system which can improve the reception performance of the multi-carrier signal receiving system, which has been obtained and the Korean Intellectual Property Office Patent Application No. No.01-2002-0064073. 韩国专利申请第2002-64073号的多载波信号传输系统包括:同步信息生成单元,用于生成同步信息;同步信息复制单元,用于复制生成的同步信息;同步信息插入单元,用于在保护间隔前连续插入同步信息生成单元生成的同步信息以及同步信息复制单元复制的同步信息。 Korean Patent Application No. 2002-64073 multicarrier signal transmission system comprising: a synchronization information generation unit for generating synchronization information; synchronization information copying unit configured to copy the generated synchronization information; synchronization information inserting unit, a guard interval synchronization information generating unit generating synchronization information and the synchronization information unit copied before copying information successively inserted. 图4C和图4D示例性地显示了根据韩国专利申请第2002-64073号的公布内容获得的TDS-OFDM信号的帧,这些帧各具有二个或三个插入的同步信号的连续片断。 4C and 4D exemplarily shows a TDS-OFDM signal frame Korean Patent Application Publication No. 2002-64073 obtained content, the frames each have two or three successive segments inserted synchronization signal. 然而,在TDS-OFDM信号中可以插入至少两个或更多的连续同步信息片断。 However, the TDS-OFDM signal may be inserted into at least two or more consecutive synchronization information pieces.

[0016] 但是,存在这样一个问题:至今还没有开发出适用于本申请人的多载波信号传输系统且可以有效接收并处理信号的信号接收系统。 [0016] However, there is a problem: has not developed a multi-carrier signal transmission system applicable to the present applicant and may effectively receive and process the signals received system signal.

[0017] 发明内容 [0017] SUMMARY OF THE INVENTION

[0018] 提出本发明是为了解决常规设备的上述不足及其他问题。 [0018] The present invention is made to solve the above deficiencies and other problems of the conventional apparatus. 本发明的一方面提供一种数字广播信号接收器的信道估计装置和方法,它能够通过处理其中插入多个连续同步信号的多载波信号或者是以单载波信号格式传输的数字广播信号精确地检测相关性,并且通过降低阈值去除噪声更精确地检测相关性。 In one aspect the present invention provides a digital broadcast signal receiver channel estimation apparatus and method, it is possible to detect a digital broadcast signal of a multicarrier signal into a plurality of consecutive synchronization signal format or a single-carrier signal is transmitted accurately by processing wherein correlation, and the correlation detected more accurately removing noise by lowering the threshold.

[0019] 上述以及其他目的及优点通过提供一种用于数字广播信号接收器的信道估计装置基本实现,该信道估计装置处理其中插入了至少两个或多个的相同且连续的同步信号的数字广播信号,它包括:相关单元,用于根据接收的数字广播信号和参考同步信号来计算相关性;波峰检测单元,用于检测所计算出的相关性中相应于最后一个同步信号的相关性的位置;窗口单元,用于在从相关单元接收到的相关性中,选择包括在波峰检测单元中检测到的位置的预定间隔的相关性;和信道估计单元,用于使用由窗口单元选择的相关性进行信道估计。 [0019] The above and other objects and advantages of the apparatus basic implementation, the channel estimation processing apparatus in which at least two or more of the same and continuous synchronization signal provided by the digital channel estimation for a digital broadcast signal receiver the broadcast signal, comprising: a correlation unit, the correlation for calculating the received digital broadcast signal and a reference synchronization signal; peak detection means for detecting the calculated correlation corresponding to the last synchronizing signal correlation position; window unit for receiving from the correlation unit to the correlation, the correlation comprises selecting the position detected in the peak detection unit in a predetermined interval; and a channel estimation unit, for use by the relevant selected windowing unit of channel estimation.

[0020] 各参考同步信号每个都与同步信号相同,数字广播信号最好是单载波信号和多载波信号中的任一种。 [0020] Each reference sync signal are each identical with the synchronization signal, a digital broadcast signal is preferably any of a single carrier signals and multiple carrier signals.

[0021] 此外,本发明的信道估计装置还包括延迟单元,用于将所有相应于同步信号出现的相关性延迟到相关性与最后一个同步信号相应地出现的位置,其中,窗口单元能计算出从相关单元接收到的相关性及从延迟单元接收到的至少一个或更多的相关性的平均值,并选择一定间隔,该间隔包括相应于计算出的平均相关性从波峰检测单元检测到的位置。 [0021] Furthermore, the channel of the present invention, estimation apparatus further comprises a delay unit for all corresponding to the synchronization signal occurs correlation delay to a position correlated with the last synchronization signal corresponding to occur, wherein the window unit can calculate more correlation and the average correlation from the delay unit or the at least one received from the receiving unit related to, and select a certain interval, which includes the calculated average to a corresponding correlation peak is detected from the detection unit position.

[0022] 用于处理其中插入两个或更多的相同且连续同步信号的数字广播信号的数字广播信号接收器的信道估计方法包括:相关性计算步骤,用于根据接收到的数字广播信号和参考同步信号计算相关性;波峰检测步骤,用于检测计算出的相关性中相应于最后一个同步信号的相关性的位置;窗口步骤,用于从自相关性计算步骤接收到的相关性中选择包括在波峰检测步骤中检测到的位置的预定间隔的相关性;和信道估计步骤,用于使用由窗口步骤选择的相关性进行信道估计。 [0022] wherein the insertion for processing two or more consecutive identical and synchronous digital broadcasting signal receiver of a digital broadcasting signal of the channel estimation method comprising: correlation computing step of computing, according to the received digital broadcast signal and reference sync signal correlation calculation; peak detection step for detecting the position of the correlation computed in the correlation corresponding to the last synchronizing signal; a step of the window, select a correlation computing step of computing an autocorrelation from the received including the correlation peak detected in the position detecting step in a predetermined interval; and a channel estimation step of using the correlation of channel estimates selected by the window step. 各参考同步信号均与同步信号相同,数字广播信号可以是单载波信号和多载波信号中的任一种。 Each reference sync signals are identical with the synchronization signal, the digital broadcast signal may be any of a single carrier signals and multiple carrier signals.

[0023] 信道估计方法还包括延迟步骤,用于将所有相应于同步信号出现的相关性延迟到相关性与最后一个同步信号相应地出现的位置,其中,窗口步骤计算从相关步骤接收到的相关性及从延迟步骤接收到的至少一个或更多的相关性的平均值,并选择一定间隔,该间隔包括相应于计算的平均相关性从波峰检测步骤检测到的位置。 [0023] The channel estimation method further comprising a delay step for position all of the delay corresponding to the synchronization signals present to the correlation with the last synchronization signal corresponding to occur, wherein the window in step calculates received from the correlation step to relevant and at least one or more of the average value of the correlation received from the delay steps to and select certain interval, which comprises a position corresponding to the calculated average correlation detection from the peak detecting step.

[0024] 用于能处理其中插入两个或更多的相同且连续同步信号的数字广播信号的数字广播信号接收器的信道估计装置包括:相关单元,用于根据接收到的数字广播信号和参考同步信号来计算相关性;第一窗口单元,用于从相关性选择第一间隔,该第一间隔包括相应于最后一个同步信号的波峰及相应于该最后一个同步的信号的前重影(pre-ghost);第二窗口单元,用于从相关性选择第二间隔,该第二间隔包括相应于同步信号中的第一同步信号的波峰及相应于该第一同步信号的后重影(post-ghost);延迟单元,用于延迟相应于第一个同步信号的第二间隔的波峰,以使第二间隔的波峰落在相应于最后一个同步信号的第一间隔的波峰所处的位置上;连接单元,用于把延迟的第二间隔连接在第一间隔末端;信道估计单元,用于使用相连间隔的信号进行信道估计。 [0024] The process can be used to insert two or more of the same and continuous synchronous digital broadcasting signal receiver of a digital broadcasting signal of the channel estimation apparatus comprising: a correlation unit, for receiving a digital broadcast signal according to the reference and calculate the correlation synchronization signal; a first window unit, for selecting a first interval from the correlation, the first peak corresponding to the last interval comprises a synchronization signal and before a corresponding ghost signal synchronized to the last (pre -ghost); second window unit for selecting a second interval from the correlation, the peak corresponding to the second interval comprises a first synchronization signal and a synchronization signal corresponding to the first synchronizing signal after ghost (pOST -ghost);, and finally a peak position of the first synchronization interval at which signal delay unit for delaying the peak corresponding to the first synchronizing signal of the second interval, the second interval such that the peaks corresponding to the upper falls ; connecting unit for a second delay interval is connected to a first end of the interval; channel estimation unit coupled to a signal interval for use for channel estimation.

[0025] 信道估计装置还包括:前重影检测单元,用于检测相应于最后一个同步信号的波峰的前重影,并把相应的信息发送到第一窗口单元;后重影检测单元,用于检测相应于第一同步信号的波峰的后重影,并把相应的信息发送到第二窗口单元,参考同步信号和同步信号相同,数字广播信号最好是单载波信号和多载波信号中的任一种。 [0025] The channel estimation device further comprising: a front ghost detecting means for detecting a synchronization signal corresponding to the last peak preghost, and transmits corresponding information to a first window unit; post-ghost detection unit, with after detection of ghost peaks corresponding to the first synchronization signal, and sends the corresponding information to the second window unit, the same reference synchronization signal and a synchronization signal, a digital broadcast signal is preferably a single carrier signal and a multicarrier signal either.

[0026] 用于处理其中插入两个或更多的相同且连续同步信号的数字广播信号的数字广播接收器的另一信道估计方法包括:相关性计算步骤,用于根据接收到的数字广播信号和参考信号计算相关性;第一窗口步骤,用来从相关性选择第一间隔,该第一间隔包括相应于最后一个同步信号的波峰及相应于最后一个同步信号的前重影;第二窗口步骤,用于从相关性选择第二间隔,该第二间隔包括相应于第一同步信号的波峰及相应于第一同步信号的后重影;延迟步骤,用来延迟相应于第一同步信号的第二间隔的波峰,以使第二间隔的波峰落在相应于最后一个同步信号的第一间隔的波峰所在的位置上;连接步骤,用来把延迟的第二间隔连接在第一间隔的末尾;和信道估计步骤,用于使用连接间隔的信号进行信道估计。 [0026] wherein the insertion for processing two or more consecutive identical and synchronous digital broadcast receiver of a digital broadcasting signal of another channel estimation method comprising: a correlation calculation step of receiving a digital broadcast signal according to and calculate the correlation reference signal; a first step of a window for selecting a first interval from the correlation, the respective peaks and the first interval comprises a synchronization signal corresponding to the last preghost a synchronizing signal in the last; second window step of selecting a second from the correlation interval, the second interval comprises a peak corresponding to the ghost and the first synchronization signal corresponding to the first synchronization signal; delaying step for delaying the synchronization signal corresponding to the first peaks of the second interval, the second interval such that the peaks corresponding to the falling position of the first peak of the last interval where a synchronizing signal is on; connecting step for connecting the second interval delay at the end of the first interval ; and a channel estimation step of using a signal of connection interval for channel estimation.

[0027] 本方法还可以包括:前重影检测步骤,用来检测相应于最后一个信号的波峰的前重影,并把相应的信息发送到第一窗口步骤;后重影检测步骤,用来检测相应于第一同步信号的波峰的后重影,并把相应的信息发送到第二窗口步骤,参考同步信号与同步信号相同,数字广播信号可以是单载波信号和多载波信号中的任一种。 [0027] The method may further comprise: before the ghost detection step for detecting a peak corresponding to the last before a ghost signal, and transmits the corresponding information to a first step of the window; post-ghost detection step for detecting a peak corresponding to the first synchronizing signal after the ghost, and sends the corresponding information to the second window step, the reference synchronizing signal and the same synchronizing signal, a digital broadcast signal may be either single-carrier signal and a multicarrier signal species.

[0028] 附图说明 [0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 通过结合附图对本发明的特定实施例描述,本发明的上述方面及特性会更加清楚,其中: [0029] The accompanying drawings of specific embodiments of the present invention will be described in conjunction with, the above-described aspects and features of the present invention will become more apparent, wherein:

[0030] 图1是表示常规信道估计装置的框图; [0030] FIG. 1 is a block diagram of a conventional channel estimation apparatus;

[0031] 图2A和图2B是表示常规数字广播信号的帧结构示意图; [0031] FIGS. 2A and 2B is a schematic structure of a conventional digital broadcasting signal frame representation;

[0032] 图3是在图1的相关单元中计算出的相关性的示意图; [0032] FIG. 3 is a schematic view of the correlation calculated in the correlation unit of Figure 1;

[0033] 图4A至图4D是表示插入多个连续同步信号的数字广播信号的帧结构图; [0033] FIGS. 4A to 4D are inserted into a plurality of successive sync frames showing a configuration diagram of the digital broadcasting signal;

[0034] 图5是表示根据本发明一实施例的数字广播信号接收器的信道估计装置的框图; [0034] FIG. 5 is a block diagram showing a channel estimation apparatus according to an embodiment of the digital broadcast signal receiver of the embodiment of the present invention;

[0035] 图6是表示根据本发明第一实施例的图5中的信道估计装置的操作的流程图; [0035] FIG 6 is a flowchart showing the operation of the apparatus of FIG. 5 according to a first estimation of the embodiment of the present invention in a channel;

[0036] 图7是表示根据本发明第二实施例的图5中的信道估计装置的操作的流程图; [0036] FIG. 7 is a flowchart showing the operation of the apparatus of FIG 5 according to a second embodiment estimating embodiment of the present invention in a channel;

[0037] 图8是解释根据本发明另一个实施例的数字广播信号接收器的信道估计装置框图; Channel digital broadcasting signal receiver of the embodiment [0037] FIG. 8 is explained in accordance with another embodiment of the present invention means a block diagram of estimation;

[0038] 图9是表示图8中的信道估计装置的操作的流程图; [0038] FIG. 9 is a flowchart showing the operation of the apparatus in FIG. 8 the channel estimation;

[0039] 图10A至图10D是表示基于图5至图7的信道估计过程的示意图; [0039] FIGS. 10A to 10D are schematic diagrams showing the process of channel estimation based on FIGS. 5 to 7;

[0040] 图11A和图11B是表示基于图8和图9的信道估计过程的示意图。 [0040] FIGS. 11A and 11B are schematic diagram showing the process of channel estimation based on FIGS. 8 and 9.

[0041] 具体实施方式 [0041] DETAILED DESCRIPTION

[0042] 下文将结合附图对本发明作详细说明。 [0042] Hereinafter the present invention in conjunction with the accompanying drawings of the detailed description.

[0043] 图5是表示根据本发明实施例的数字广播信号接收器的信道估计装置的方框图。 [0043] FIG. 5 is a block diagram showing a channel estimation apparatus according to the digital broadcasting signal receiver of the embodiment of the present invention. 图5中的接收器接收并处理单载波信号或多载波信号格式的数字广播信号,其中,单载波信号或数字广播信号中插入了如图4A至图4D所示的多个连续同步信号。 The receiver 5 receives and processes a digital broadcast signal or a carrier signal of a single carrier signal format, wherein a single carrier signal or a digital broadcast signal is inserted into a plurality of consecutive synchronization signals shown in FIGS. 4A to 4D. 参考图5,根据本实施例的数字广播信号接收器的信道估计装置包括:相关单元200、延迟单元203、波峰检测单元205、窗口单元210、阈值单元220、信道估计单元230。 Referring to FIG 5, according to a digital broadcast channel signal receiver according to the present embodiment of the estimating apparatus comprising: a correlation unit 200, a delay unit 203, a peak detection unit 205, a windowing unit 210, threshold unit 220, a channel estimation unit 230. 相关单元200接收TDS-OFDM信号,比较插入数字广播信号的同步信号和与插入的同步信号相同的参考信号,以计算它们的相关性。 Correlation unit 200 receives the TDS-OFDM signal, a synchronization signal is inserted comparing the digital broadcast signal and a synchronization signal insertion same reference signals, to calculate their relevance. 计算结果为,相应于每一个同步信号都会出现波峰。 Calculation results, each corresponding to a synchronization signal peaks will appear. 延迟单元203把从相关单元接收到的波峰延迟一个同步信号长度发送。 The delay unit 203 receives from the peak correlation unit to delay sending a synchronization signal length. 总之,由于波峰相应于连续的同步信号出现,波峰间的间隔变得与同步信号的长度相同,因此,如果波峰的位置延迟同步信号的长度,则波峰和随后的波峰会落到同一个位置。 In short, since the peak corresponding to a continuous synchronization signal occurs, the interval between peaks becomes the same as the length of the synchronizing signal, and therefore, if the position of the peak of the length of the synchronizing signal is delayed, and the subsequent wave crests summit same location falls. 波峰检测单元205检测从相关单元200接收到的波峰中的最后一个波峰。 Peak detection unit 205 detects correlation unit 200 receives from the peak to the last peak. 窗口单元210计算从相关单元200选择接收的各相关性与从延迟单元203接收到的延迟的相关性的平均值,然后选择波峰检测单元205检测到的位置的间隔。 Each window unit 210 calculates the average value of correlation from the delay unit 203 receives the correlation received from the correlation unit 200 selects, and then select the interval detecting unit 205 detects the peak position. 另外,相应于从相关单元200选择接收到的相关性,窗口单元210选择由波峰检测单元205检测到的位置的间隔。 Further, the spacer 200 corresponding to the received selection from the correlation unit to the correlation unit 210 selects the window detected by the peak position detecting unit 205. 在已选择的间隔的相关性中,阈值单元220去除低于预定阈值的值。 In the correlation interval has been selected, the threshold unit 220 is removed below a predetermined threshold value. 信道估计单元230从阈值单元220接收相关性,用于信道估计。 The channel estimation unit 230 receives the correlation value from the threshold unit 220 for channel estimation.

[0044] 图6是表示根据本发明第一实施例的图5中的信道估计单元的操作流程图。 [0044] FIG 6 is a flowchart showing the operation according to FIG estimation unit 5 of the first embodiment of the present invention in a channel. 相关单元200接收数字广播信号,比较该数字广播信号与参考信号,并计算出相关性(S300),图10A是表示当接收到其中插入两个连续同步信号的数字广播信号时计算出的相关性的示意图。 Receiving a digital broadcast signal correlation unit 200, compares the digital broadcast signal with a reference signal, and calculate the correlation (S300), wherein FIG. 10A is a calculated when inserted into the digital broadcast signal when two successive synchronization signals received correlation FIG. 和现有技术相似的噪声发生在波峰700和710两者之外,但是在波峰700和710之间得到一个恒定值。 And similar prior art noise occurs outside of both the peaks 700 and 710, but to give a constant value between 700 and 710 peaks. 表2列出了第二间隔中的恒定值。 Table 2 lists the value of the second constant interval.

[0045] 表2 [0045] TABLE 2

[0046] [0046]

[0047] 如表2所示,通过连续地插入两段同步信息,仅使用63个码元的同步信息,即使是低于-35分贝的多径信道也能被检测到。 [0047] As shown in Table 2, by successively inserting two synchronization information, the synchronization information 63 using only symbols, even lower than -35 dB multipath channel can also be detected.

[0048] 波峰检测单元205接收同步信号间隔的相关性,检测相应于最后一个连续同步信号出现的波峰710的位置(S310)。 [0048] The peak detection unit 205 receives the synchronization signal interval correlation detecting successive positions corresponding to the last (S310) the signal peak 710 occurring synchronous. 窗口单元210从波峰检测单元205接收位置信号,选择并传送包括波峰在内的间隔至阈值单元220(S320)。 Window unit 210 receives the position signal from the peak detection unit 205, and a transmission interval comprises selecting peaks to a threshold unit, including 220 (S320). 图10B是窗口单元210选择的间隔740的示意图。 10B is a schematic view 740 of the spacer 210 selects a window unit. 阈值单元220去除低于预定阈值的相关性(S330)。 Threshold unit 220 is removed is less than a predetermined correlation threshold value (S330). 因为连续同步信号间间隔中的相关性通常小到与现有技术的噪声相比可以忽略,从而阈值可以比常规阈值小。 Because the interval between successive sync correlation signal is typically negligibly small as compared with the prior art noise, so that the threshold may be smaller than a conventional threshold value. 因此,即使由于现有技术噪声而丢失的小波峰也可以被检测到。 Accordingly, even if the prior art lost little noise peaks it may be detected. 信道估计单元230从窗口单元210接收相关性用于信道估计(S340)。 Window channel estimation unit 230 receives the correlation unit 210 for channel estimation (S340).

[0049] 图7是表示根据本发明第二实施例的图5中信道估计装置的操作流程图。 [0049] FIG. 7 is a flowchart showing the operation of the device 5 according to the channel estimate of a second embodiment of the present invention. 相关单元200接收数字广播信号,比较该数字广播信号与同步信号,并计算相关性(S400)。 Receiving a digital broadcast signal correlation unit 200, compares the digital broadcast signal with a synchronization signal, and the correlation is calculated (S400). 图10A示例性地阐明了计算的相关性。 FIG. 10A schematically illustrates exemplary correlation calculation. 波峰检测单元205接收相关性,检测相应于最后一个连续同步信号出现的波峰的位置(S410)。 Peak detection unit 205 receives the correlation between the detection position (S410) corresponding to the last peak of a continuous synchronization signal emerging. 为了延迟对应于连续插入的同步信号的所有相关性的位置至相应于最后一个同步信号的相关性的位置,设定了一个值(插入的同步信号的个数-1),作为决定延迟时间的预定变量的初始值(S420)。 In order to delay all of insertion position corresponding to the continuous synchronization signal to the position corresponding to the correlation of the last synchronizing signal is set to a value (the number of synchronization signal insertion -1), as determined delay time the initial value of a predetermined variable (S420). 然而,此过程是为了解释本发明的操作而任意设置的,此过程也可采用其他方法。 However, this process in order to explain the operation of the present invention is arbitrarily set, other methods may also be employed in this process. 为了将相应于第一同步信号的相关性延迟到与最后一个同步信号的相关性相应的位置,相关性被延迟了一个对应于N倍的同步信号长度的时间段(S430)。 In order corresponding to the correlation of the first synchronization signal corresponding to the delayed correlation with a synchronization signal of the last positions, the correlation is delayed by a time corresponding to N times the length of the segment sync signal (S430). 延迟的相关性被发送到窗口单元210(S440)。 The delayed correlation is sent to the window unit 210 (S440). 步骤S430和S440从按N减1重复。 Step S430 and S440 is repeated by the N minus 1. 图10C表示将在各同步信号位置出现的相关性的波峰延迟到最后一个同步信号位置的过程。 FIG 10C shows a delay to a synchronization signal the last position of the correlation peak position of the sync signals occurring process. 图10C示意的是第一个波峰700被延迟了相应于一个同步信号长度的时间周期一倍的时间段,并被移动到最后一个波峰710的位置上。 FIG 10C is a schematic of a first peak 700 is delayed by a time period corresponding to twice the length of the synchronizing signal period, and moved to a final position 710 on the peak. 结果,这两个同步信号位于对应于最后一个同步信号的位置上。 As a result, the two synchronization signals is located in a position corresponding to the last synchronizing signal. 如果在步骤S455中N小于1,则窗口单元210计算出初始相关性和至少一个或更多的延迟的相关性的平均值。 If N is less than 1 in step S455, the window unit 210 calculates the average correlation initial correlation and at least one or more delay. 窗口单元210选择包括在步骤S410中检测到的位置的一定间隔中的相关性(S470)。 Window selecting unit 210 includes a position detected in step S410 in a certain interval correlation (S470). 图10D是表示计算平均值720,并相应于平均相关性选择一定间隔730的示意图。 FIG 10D shows a calculated average of 720, and corresponds to the average correlation of the selected schematic 730 spaced. 阈值单元220接收在选择的间隔内的相关性,并去除小于预定值的相关性(S480)。 Threshold unit 220 receives the correlation within a selected interval, and removing the correlation is less than a predetermined value (S480). 此时,由于相应于连续同步信号的相关性是接近于零的常数,阈值可以小于常规的阈值,这就可以检测到由于现有技术噪声而丢失的小波峰。 In this case, since the correlation corresponding to the synchronization signal is a continuous constant close to zero, the threshold value may be less than a conventional threshold, which can be detected due to the loss of the prior art noise and small peaks. 信道估计单元230从窗口单元210接收相关性信号用于信道估计(S490)。 Channel estimation unit 230 receives the window unit 210 from the correlation signal used for channel estimation (S490).

[0050] 图8是表示本发明另一实施例的信道估计装置的示意图。 [0050] FIG. 8 is a schematic view showing another embodiment apparatus of the channel estimation embodiment of the present invention. 图8的信道估计装置包括相关单元500、前重影检测单元510、第一窗口单元520、后重影检测单元530、第二窗口单元540、延迟单元550、连接单元560、阈值单元570、信道估计单元580。 FIG channel 8 estimation apparatus includes a correlation unit 500, the front ghost detecting means 510, a first window unit 520, the ghost detecting means 530, the second window unit 540, a delay unit 550, connection unit 560, threshold unit 570, the channel estimation unit 580. 相关单元比较数字广播信号和参考同步信号,并计算相关性。 Related unit compares the digital broadcast signal and the reference synchronization signal and the correlation is calculated. 前重影检测单元510接收相关性,检测相应于最后一个同步信号出现的波峰的前重影。 Preghost correlation detecting unit 510 receives the detected peak corresponding to the last synchronizing signal occurring before the ghost. 第一窗口单元520开出包括检测到的前重影和最后的同步信号的第一间隔的窗口。 A first window unit 520 windows are opened to the first interval comprises detecting preghost and the last synchronization signal. 后重影检测单元530输入相关性,并检测相应于第一同步信号出现的波峰的后重影。 After the ghost detection unit 530 inputs the correlation, and detecting a first synchronization signal corresponding to the peak appearing in the post-ghost. 第二窗口单元540开出包括第一波峰和检测到的后重影的第二间隔的窗口。 Second window means the window of the second opening 540 includes a first interval and the detected peak of the post-ghost. 图11A和图1B说明的是当数字广播信号中存在重影时的相关性。 11A and FIG. 1B illustrates that when the correlation in the presence of a digital broadcast signal ghost. 图11A是表示分别选择第一窗口单元520和第二窗口单元530时的第一部分和第二部分。 11A is a window unit 520, respectively, selecting a first cell and a second window portion 530 of the first and second portions. 延迟单元550把第一间隔的波峰800延迟一定时段,以使第一间隔的波峰810到达第二间隔的波峰800所在的位置。 Peak delay unit 550 delays the first interval 800 for a certain period, so that the peaks 810 of the first interval reaches the position of the peak of the second spacer 800 is located. 延迟的时间段相应于从中减去一个同步信号的总的插入同步信号的长度。 Delay time period corresponding to a synchronizing signal is subtracted from the synchronization signal insertion total length. 连接单元560连接两个窗口间隔。 A connecting unit 560 connecting two window interval. 第二间隔连接在第一部分末端。 A second end portion connected to the first interval. 图11B表示了连接状态。 11B shows a connection state. 第一间隔的波峰810和第二间隔的波峰800所处位置相同,因此出现了波峰820,本实施例采用这两个波峰的平均相关性确定连接的间隔中的波峰820的值。 Crest 810 and the first interval of the second interval of the same peak location 800, 820 so that a peak appears, the average value of the peak 820 of the correlation interval is determined using these two peaks in the embodiment of the connector in the present embodiment. 阈值单元570只选择大于预定阈值的值,并把选择的值发送到信道估计单元580,信道估计单元580估计信道。 Threshold unit 570 to select a value greater than a predetermined threshold value, and transmits the selected value to the channel estimation unit 580, a channel estimation unit 580 estimates the channel.

[0051] 图9是解释图8中信道估计装置的操作的流程图。 [0051] FIG. 9 is a flowchart to explain the operation of the apparatus of FIG. 8 channel estimation. 信道估计装置接收数字广播信号,通过比较数字广播信号和在发送与接收期间预定的参考同步信号来计算相关性(S600)。 Channel estimation means for receiving a digital broadcast signal, is calculated by comparing the digital broadcast signal during transmission and reception and a predetermined correlation reference sync signal (S600). 信道估计装置从相关性中检测最后一个波峰的前重影(S610)。 Channel estimation means detects a correlation peak from the last preghost (S610). 信道估计装置选择第一间隔,该第一间隔包括最后一个波峰及最后一个的前重影(S620)。 Channel estimation means selects the first spacer, the spacer comprises a first and last peak last preghost (S620). 信道估计装置检测第一波峰的后重影(S630)。 Channel estimation means for detecting a first post-ghost peak (S630). 该信道估计装置开出从第一波峰开始至包括第一波峰的后重影的第二间隔的窗口(S640)。 The channel estimation device out of the second window interval (S640) from the first peak to the ghost of a first peak. 信道估计装置延迟第二间隔,以使第二间隔的波峰落在第一间隔的波峰所在的位置上(S650)。 A second channel estimation device delay interval, a second interval so that the peak position of the peak falls located on the first interval (S650). 信道估计装置把第二间隔连接在第一间隔的末端(S660)。 Channel estimation means connected to the second spacer end (S660) the first interval. 图11B是表示连接状态的示意图。 FIG 11B is a diagram showing a connection state. 图11B中对重叠的波峰820,计算第一间隔的波峰810和第二间隔的波峰800的相关性的平均值,但是,可以首先选择第一间隔的波峰,也可以首先第二间隔的波峰。 FIG. 11B overlapping peaks 820, calculates an average value of the correlation peak and the peaks 810 of the first interval of the second interval 800, however, may first select a first peak interval, the second interval may be the first peak. 信道估计装置只选择大于预定阈值的相关性用于信道估计(S670)。 Channel estimation means to select only above a predetermined threshold for the correlation channel estimation (S670).

[0052] 如上所述,本发明可以通过使用连续的PN值,来防止由于相邻信号而产生的相关性错误,通过降低用于获取相关性的阈值精确地检测低相关性,并通过获得相应于PN值的相关性的平均值计算比现有技术更精确的相关性。 [0052] As described above, the present invention is by using a continuous PN value to prevent errors due to neighboring correlation signal generated by correlation for obtaining reduction of threshold detection precision low correlation, and by obtaining the corresponding the average value of the PN correlation values ​​is calculated more accurately than in the prior art correlation. 另外,使用根据本发明计算得到的相关性可以获得更准确的信号补偿。 Further, the correlation can be obtained using the present invention is obtained by calculating more accurate compensation signal.

[0053] 如上所述,本发明能够使用连续的同步信号检测相应于单个同步信号的相关性,并且可以使用相关性平均值计算出更精确的相关性。 [0053] As described above, the present invention is capable of continuous detection of the synchronization signal corresponding to a correlation of a single synchronization signal, and can be calculated using more precise correlation average correlation. 另外,由于同步信号具有对应于连续同步信号的间隔中的相关性接近于零的特点,在计算相关性时,可以避免随相关性产生的噪声。 Further, since the synchronization signal having characteristics close to zero correlation synchronization signal corresponding to the continuous interval, when calculating the correlation, the correlation can be avoided with the noise generated. 此外,由于采用了低阈值,从而能很容易的检测到以现有方式没有被检测到的噪声。 Further, the use of low-threshold, so that it can be easily detected in a conventional manner to the noise is not detected.

[0054] 上述实施例和优点只是一些举例,本发明并不仅限于此。 [0054] The embodiments and advantages are just some example embodiments, the present invention is not limited thereto. 本发明还可以应用于其他类型的设备。 The present invention is also applicable to other types of apparatuses. 另外,本实施例的说明只是示例性的,本发明的并不仅限于权利要求书的范围,显然本领域的技术人员可以进行各种变化和改进。 Further, the present embodiment described only exemplary embodiments of the present invention is not limited to the scope of the appended claims, those skilled in the art apparent that various changes and modifications.

Claims (24)

1.一种数字广播信号接收机,包括: A digital broadcasting signal receiver, comprising:
信道估计装置,使用接收的信号来执行信道估计, Channel estimation means for performing channel estimation using the received signal,
其中,所述数字广播信号接收机接收具有两个或更多连续的同步信号的信号。 Wherein the digital broadcast signal receiver for receiving a signal having two or more consecutive synchronization signal.
2.如权利要求1所述的数字广播信号接收机,其中,所述信道估计装置包括: 2. The digital broadcasting signal receiver according to claim 1, wherein the channel estimation apparatus comprising:
相关单元,用于根据接收的信号和参考同步信号计算相关性; Correlation means for calculating a correlation from the received signal and the reference synchronization signal;
波峰检测单元,用于检测计算出的相关性中相应于最后一个同步信号的相关性的位置; Peak detection unit, a correlation of a position corresponding to the last detected synchronization signal of the calculated correlation;
窗口单元,用于从自相关单元接收到的相关性中选择预定间隔的相关性,该预定间隔包括在波峰检测单元中检测到的位置;和 Window means for receiving a correlation from the select unit to the autocorrelation correlation predetermined interval, the predetermined interval comprises a peak position detected in the detecting unit; and
信道估计单元,用于使用由窗口单元选择的相关性,进行信道估计。 A channel estimation unit for using the correlation window by the selected cell, channel estimation.
3.如权利要求2所述的数字广播信号接收机,其中,所述信道估计装置还包括:延迟单元,用于将相应于同步信号出现的全部相关性延迟到相应于最后一个同步信号出现的相关性的位置,其中,窗口单元计算从相关单元接收的相关性和从延迟单元接收的至少一个或更多的相关性的平均值,并选择另一预定间隔,该另一预定间隔包括波峰检测单元对应于计算出的平均相关性检测到的位置。 3. The digital broadcasting signal receiver according to claim 2, wherein the channel estimating apparatus further comprises: a delay unit for delaying the correlation corresponding to the entire synchronization signal to occur corresponding to the last occurrence of a synchronizing signal correlation between the location where, and at least one or more of the average value of the correlation received from the delay unit calculates the correlation window unit received from the correlation unit, and select another predetermined interval, which further comprises a predetermined peak detection interval unit corresponds to the average of the calculated correlation to the detected position.
4.如权利要求1所述的数字广播信号接收机,其中,所述信道估计装置包括: The digital broadcasting signal receiver as claimed in claim 1, wherein the channel estimation apparatus comprising:
相关单元,用于基于接收的信号和参考同步信号,计算相关性; Correlation unit, based on the received signal and a reference synchronizing signal, calculates the correlation;
第一窗口单元,用于从相关性选择第一间隔的相关性,该第一间隔包括相应于最后一个同步信号的波峰和相应于该最后一个同步信号的前重影; A first window unit, a correlation, the first interval comprises a synchronization signal corresponding to the last peaks and corresponding to the last synchronizing signal preghost correlation selecting from a first interval;
第二窗口单元,用于从相关性选择第二间隔,该第二间隔包括相应于同步信号中的第一同步信号的波峰和相应于该第一同步信号的后重影; Second window means for selecting a second interval from the correlation, the peak corresponding to the second interval comprises a first synchronization signal and a synchronization signal corresponding to the first synchronizing signal after the ghost;
延迟单元,用于延迟相应于第一同步信号的第二间隔的波峰,以使第二间隔的波峰落在相应于最后一个同步信号的第一间隔的波峰所在的位置上; Delay means for delaying the peak of the second interval corresponding to the first synchronizing signal, so that the peak of the second interval falls to a position corresponding to a first interval of a last sync signal peak is located on;
连接单元,用于把延迟的第二间隔连接在第一间隔的末端;和 Connecting means for connecting the second interval delay at the end of the first interval; and
信道估计单元,用于使用被连接的间隔的信号进行信道估计。 A channel estimation unit for using the interval signal is connected to the channel estimation.
5.如权利要求4所述的数字广播信号接收机,其中,所述信道估计装置还包括: 5. The digital broadcast signal receiver according to claim 4, wherein the channel estimating apparatus further comprises:
前重影检测单元:用于检测相应于最后一个同步信号的波峰的前重影,并把相应的信息发送到第一窗口单元;和 Ghost detecting means before: a peak corresponding to the last synchronizing signal is detected before the ghost, and sends the corresponding information to a first window unit; and
后重影检测单元:用于检测相应于第一同步信号的波峰的后重影,并把相应的信息发送到第二窗口单元。 After the ghost detecting means: means for detecting the ghost peaks corresponding to the first synchronization signal, and sends the corresponding information to the second window unit.
6.如权利要求1-5中任一项所述的数字广播信号接收机,其中,所述参考同步信号和同步信号相同。 The digital broadcast signal receiver according to any one of claims 1 to 5 as claimed in claim 6, wherein the same reference synchronization signal and the synchronization signal.
7.一种数字广播信号接收方法,包括下述步骤: A digital broadcasting signal receiving method, comprising the steps of:
接收步骤,接收信号; Receiving step of receiving a signal;
信道估计步骤,使用接收的信号来执行信道估计, A channel estimation step of performing channel estimation using the received signal,
其中,接收具有两个或更多连续的同步信号的信号。 Wherein receiving a signal having two or more consecutive synchronization signal.
8.如权利要求7所述的数字广播信号接收方法,其中,所述信道估计步骤包括: A digital broadcasting signal receiving method according to claim 7, wherein the channel estimation step comprises:
相关性计算次步骤,用于根据接收的信号和参考同步信号计算相关性; Correlation calculation time step of calculating a correlation in accordance with the received signal and the reference synchronization signal;
波峰检测次步骤,用于检测计算出的相关性中相应于最后一个同步信号的相关性的位置; Peak detection step times, for detecting the correlation calculated in the position corresponding to the correlation between the last synchronization signal;
窗口次步骤,用于从自相关性计算次步骤接收到的相关性中选择预定间隔的相关性,该预定间隔包括由波峰检测次步骤检测到的位置;和 Window time step of receiving from the self-correlation of the correlation calculation to select the relevant sub-step of a predetermined interval, which interval comprises the predetermined position detected by the peak detection time steps; and
信道估计次步骤,使用窗口次步骤选择的相关性进行信道估计。 Channel estimation sub-step, the step of using the selected sub-window correlation channel estimation.
9.如权利要求8所述的数字广播信号接收方法,其中,所述信道估计步骤还包括:延迟次步骤,用于将对应于同步信号出现的所有相关性延迟到与最后一个同步信号相应地出现的相关性的位置,其中,窗口次步骤计算从相关性计算次步骤接收到的相关性与从延迟次步骤接收到的至少一个或更多的相关性的平均值,并选择另一预定间隔,该另一预定间隔包括波峰检测次步骤相应于计算出的平均相关性检测的位置。 9. The digital broadcasting signal receiving method according to claim 8, wherein the channel estimating step further comprises: a delay time step for all corresponding to the delay of the synchronization signal corresponding to the last occurrence of a synchronization signal to correlation of location occurs, wherein the step of calculating at least one window times or more the average of the correlation of the correlation from the delay times and the reception step to receive from the correlation calculation to the step times, and select another predetermined interval the other predetermined time interval comprises the step of detecting a peak corresponding to an average of the calculated correlation detection position.
10.如权利要求7所述的数字广播信号接收方法,其中,所述信道估计步骤包括: 10. The digital broadcasting signal receiving method according to claim 7, wherein the channel estimation step comprises:
相关性计算次步骤,用于基于接收的信号和参考同步信号计算相关性; Correlation calculation time step of calculating a correlation based on the received signal and a reference synchronization signal;
第一窗口次步骤,用于从相关性选择第一间隔的相关性,该第一间隔包括相应于最后一个同步信号的波峰和相应于该最后一个同步信号的前重影; A first step of window views, a correlation, the first interval comprises a synchronization signal corresponding to the last peak from the correlation selecting the first interval and corresponding to the last synchronizing signal preghost;
第二窗口次步骤,用于从相关性选择第二间隔的相关性,该第二间隔包括相应于同步信号中的第一同步信号的波峰和相应于该第一同步信号的后重影; Second window time step, a correlation from the correlation selecting the second interval, the second interval comprises a first synchronizing signal corresponding to the signal peaks and corresponding to the first synchronizing signal after the ghost;
延迟次步骤,用于延迟相应于第一同步信号的第二间隔的波峰,以使第二间隔的波峰落在相应于最后一个同步信号的第一间隔的波峰所在的位置; Step delay times, for delaying a second signal peak corresponding to the first synchronization interval, the second interval such that the peak falls within the first interval corresponding to the position of a synchronization signal of the last peak is located;
连接次步骤,用于把延迟的第二间隔连接在第一间隔的末端;和 Connection time step of the second delay interval is connected to the end of the first interval; and
信道估计次步骤,用于使用被连接的间隔的信号进行信道估计。 Channel estimation sub-step of using the interval signal is connected to the channel estimation.
11.如权利要求10所述的数字广播信号接收方法,其中,所述信道估计步骤还包括: 11. The digital broadcasting signal receiving method according to claim 10, wherein the channel estimating step further comprises:
前重影检测次步骤,用于检测相应于最后一个同步信号的波峰的前重影,并把相应的信息发送到第一窗口次步骤;和 Preghost detecting secondary step of detecting a peak corresponding to the last synchronizing signal preghost and sends the corresponding information to a first time window step; and
后重影检测次步骤,用于检测相应于第一同步信号的波峰的后重影,并把相应的信息发送到第二窗口次步骤。 After the ghost detecting step times, for the detection of ghost peaks corresponding to the first synchronization signal, and sends the corresponding information to the second window time step.
12.如权利要求7-11中任一项所述的数字广播信号接收方法,其中,所述参考同步信号和同步信号相同。 12. The digital broadcast signal reception method according to any one of claims 7-11 claim, wherein the same reference synchronization signal and the synchronization signal.
13.一种接收具有两个或更多连续的同步信号的信号的数字广播信号接收机,包括: A broadcast signal receiver receives a digital signal having two or more consecutive synchronization signal, comprising:
信道估计装置,使用接收的信号来执行信道估计; Channel estimation means performs the received signal using the channel estimation;
其中,所述信道估计装置利用所述两个或更多连续的同步信号执行信道估计。 Wherein said channel estimation means using said two or more consecutive synchronization signals to perform channel estimation.
14.如权利要求13所述的数字广播信号接收机,其中,所述信道估计装置包括: 14. The digital broadcast signal receiver according to claim 13, wherein the channel estimation apparatus comprising:
相关单元,用于根据接收的信号和参考同步信号计算相关性; Correlation means for calculating a correlation from the received signal and the reference synchronization signal;
波峰检测单元,用于检测计算出的相关性中相应于最后一个同步信号的相关性的位置; Peak detection unit, a correlation of a position corresponding to the last detected synchronization signal of the calculated correlation;
窗口单元,用于从自相关单元接收到的相关性中选择预定间隔的相关性,该预定间隔包括在波峰检测单元中检测到的位置;和 Window means for receiving a correlation from the select unit to the autocorrelation correlation predetermined interval, the predetermined interval comprises a peak position detected in the detecting unit; and
信道估计单元,用于使用由窗口选择单元选择的相关性,进行信道估计。 A channel estimation unit for using a correlation window by a selection unit, for channel estimation.
15.如权利要求14所述的数字广播信号接收机,其中,所述信道估计装置还包括:延迟单元,用于将相应于同步信号出现的全部相关性延迟到相应于最后一个同步信号出现的相关性的位置,其中,窗口单元计算从相关单元接收的相关性和从延迟单元接收的至少一个或更多的相关性的平均值,并选择另一预定间隔,该另一预定间隔包括波峰检测单元对应于计算出的平均相关性检测到的位置。 15. The digital broadcast signal receiver according to claim 14, wherein the channel estimating apparatus further comprises: a delay unit for delaying the correlation corresponding to the entire synchronization signal to occur corresponding to the last occurrence of a synchronizing signal correlation between the location where, and at least one or more of the average value of the correlation received from the delay unit calculates the correlation window unit received from the correlation unit, and select another predetermined interval, which further comprises a predetermined peak detection interval unit corresponds to the average of the calculated correlation to the detected position.
16.如权利要求13所述的数字广播信号接收机,其中,所述信道估计装置包括: 16. The digital broadcast signal receiver according to claim 13, wherein the channel estimation apparatus comprising:
相关单元,用于基于接收的信号和参考同步信号,计算相关性; Correlation unit, based on the received signal and a reference synchronizing signal, calculates the correlation;
第一窗口单元,用于从相关性选择第一间隔的相关性,该第一间隔包括相应于最后一个同步信号的波峰和相应于该最后一个同步信号的前重影; A first window unit, a correlation, the first interval comprises a synchronization signal corresponding to the last peaks and corresponding to the last synchronizing signal preghost correlation selecting from a first interval;
第二窗口单元,用于从相关性选择第二间隔,该第二间隔包括相应于同步信号中的第一同步信号的波峰和相应于该第一同步信号的后重影; Second window means for selecting a second interval from the correlation, the peak corresponding to the second interval comprises a first synchronization signal and a synchronization signal corresponding to the first synchronizing signal after the ghost;
延迟单元,用于延迟相应于第一同步信号的第二间隔的波峰,以使第二间隔的波峰落在相应于最后一个同步信号的第一间隔的波峰所在的位置上; Delay means for delaying the peak of the second interval corresponding to the first synchronizing signal, so that the peak of the second interval falls to a position corresponding to a first interval of a last sync signal peak is located on;
连接单元,用于把延迟的第二间隔连接在第一间隔的末端;和 Connecting means for connecting the second interval delay at the end of the first interval; and
信道估计单元,用于使用被连接的间隔的信号进行信道估计。 A channel estimation unit for using the interval signal is connected to the channel estimation.
17.如权利要求16所述的数字广播信号接收机,其中,所述信道估计装置还包括: 17. The digital broadcast signal receiver according to claim 16, wherein the channel estimating apparatus further comprises:
前重影检测单元:用于检测相应于最后一个同步信号的波峰的前重影,并把相应的信息发送到第一窗口单元;和 Ghost detecting means before: a peak corresponding to the last synchronizing signal is detected before the ghost, and sends the corresponding information to a first window unit; and
后重影检测单元:用于检测相应于第一同步信号的波峰的后重影,并把相应的信息发送到第二窗口单元。 After the ghost detecting means: means for detecting the ghost peaks corresponding to the first synchronization signal, and sends the corresponding information to the second window unit.
18.如权利要求13-17中任一项所述的数字广播信号接收机,其中,所述参考同步信号和同步信号相同。 13-17 18. The digital broadcasting signal receiver according to any one of claims, wherein the same reference synchronization signal and the synchronization signal.
19.一种用于处理具有两个或更多连续的同步信号的数字广播信号的数字广播信号接收方法,包括下述步骤: 19. A method for processing digital broadcast signal reception method for a digital broadcast signal having two or more consecutive synchronization signal, comprising the steps of:
接收步骤,接收信号; Receiving step of receiving a signal;
信道估计步骤,使用接收的信号来执行信道估计; A channel estimation step of performing channel estimation using the received signal;
其中,所述信道估计步骤利用所述两个或更多连续的同步信号执行信道估计。 Wherein the step of estimating the channel using the two or more consecutive synchronization signals to perform channel estimation.
20.如权利要求19所述的数字广播信号接收方法,其中,所述信道估计步骤包括: 20. The digital broadcasting signal receiving method according to claim 19, wherein the channel estimation step comprises:
相关性计算次步骤,用于根据接收的信号和参考同步信号计算相关性; Correlation calculation time step of calculating a correlation in accordance with the received signal and the reference synchronization signal;
波峰检测次步骤,用于检测计算出的相关性中相应于最后一个同步信号的相关性的位置; Peak detection step times, for detecting the correlation calculated in the position corresponding to the correlation between the last synchronization signal;
窗口次步骤,用于从自相关性计算次步骤接收到的相关性中选择预定间隔的相关性,该预定间隔包括由波峰检测次步骤检测到的位置;和 Window time step of receiving from the self-correlation of the correlation calculation to select the relevant sub-step of a predetermined interval, which interval comprises the predetermined position detected by the peak detection time steps; and
信道估计次步骤,使用窗口次步骤选择的相关性进行信道估计。 Channel estimation sub-step, the step of using the selected sub-window correlation channel estimation.
21.如权利要求20所述的数字广播信号接收方法,其中,所述信道估计步骤还包括:延迟次步骤,用于将对应于同步信号出现的所有相关性延迟到与最后一个同步信号相应地出现的相关性的位置,其中,窗口次步骤计算从相关性计算次步骤接收到的相关性与从延迟次步骤接收到的至少一个或更多的相关性的平均值,并选择另一预定间隔,该另一预定间隔包括波峰检测次步骤相应于计算出的平均相关性检测的位置。 21. The digital broadcasting signal receiving method according to claim 20, wherein the channel estimating step further comprises: a delay time step for all corresponding to the delay of the synchronization signal to occur with a synchronization signal corresponding to the last correlation of location occurs, wherein the step of calculating at least one window times or more the average of the correlation of the correlation from the delay times and the reception step to receive from the correlation calculation to the step times, and select another predetermined interval the other predetermined time interval comprises the step of detecting a peak corresponding to an average of the calculated correlation detection position.
22.如权利要求19所述的数字广播信号接收方法,其中,所述信道估计步骤包括: 22. The digital broadcasting signal receiving method according to claim 19, wherein the channel estimation step comprises:
相关性计算次步骤,用于基于接收的信号和参考同步信号计算相关性; Correlation calculation time step of calculating a correlation based on the received signal and a reference synchronization signal;
第一窗口次步骤,用于从相关性选择第一间隔的相关性,该第一间隔包括相应于最后一个同步信号的波峰和相应于该最后一个同步信号的前重影; A first step of window views, a correlation, the first interval comprises a synchronization signal corresponding to the last peak from the correlation selecting the first interval and corresponding to the last synchronizing signal preghost;
第二窗口次步骤,用于从相关性选择第二间隔的相关性,该第二间隔包括相应于同步信号中的第一同步信号的波峰和相应于该第一同步信号的后重影; Second window time step, a correlation from the correlation selecting the second interval, the second interval comprises a first synchronizing signal corresponding to the signal peaks and corresponding to the first synchronizing signal after the ghost;
延迟次步骤,用于延迟相应于第一同步信号的第二间隔的波峰,以使第二间隔的波峰落在相应于最后一个同步信号的第一间隔的波峰所在的位置; Step delay times, for delaying a second signal peak corresponding to the first synchronization interval, the second interval such that the peak falls within the first interval corresponding to the position of a synchronization signal of the last peak is located;
连接次步骤,用于把延迟的第二间隔连接在第一间隔的末端;和 Connection time step of the second delay interval is connected to the end of the first interval; and
信道估计次步骤,用于使用被连接的间隔的信号进行信道估计。 Channel estimation sub-step of using the interval signal is connected to the channel estimation.
23.如权利要求22所述的数字广播信号接收方法,其中,所述信道估计步骤还包括: 23. The digital broadcasting signal receiving method according to claim 22, wherein the channel estimating step further comprises:
前重影检测次步骤,用于检测相应于最后一个同步信号的波峰的前重影,并把相应的信息发送到第一窗口次步骤;和 Preghost detecting secondary step of detecting a peak corresponding to the last synchronizing signal preghost and sends the corresponding information to a first time window step; and
后重影检测次步骤,用于检测相应于第一同步信号的波峰的后重影,并把相应的信息发送到第二窗口次步骤。 After the ghost detecting step times, for the detection of ghost peaks corresponding to the first synchronization signal, and sends the corresponding information to the second window time step.
24.如权利要求19-23中任一项所述的数字广播信号接收方法,其中,所述参考同步信号和同步信号相同。 A digital broadcast signal receiving method according to any one of claims 19-23 24., wherein the same reference synchronization signal and the synchronization signal.
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