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11.发明授权VERFAHREN UND VORRICHTUNG ZUR ERMITTLUNG EINER UNVERKÜRZTEN KANALIMPULSANTWORT IN EINEM OFDM-ÜBERTRAGUNGSSYSTEM 有权的方法和一种用于确定在OFDM传输系统中的信道未缩写脉冲响应
公开(公告)号：EP2140639B1
公开(公告)日：2011-04-13
申请号：EP08707739.2
申请日：2008-02-15
发明人： GALDA, Dirk , SCHMIDT, Kurt , BALZ, Christoph
IPC分类号： H04L25/02
CPC分类号： H04L25/0236 , H04L25/0232 , H04L27/2655
摘要： The invention relates to a method and device for determining an unabbreviated channel impulse response (h≈n) in an OFDM transmission system, the duration of which is greater than the length (NG) of the guard interval, estimating the channel transmission factor (Hn,k) in the frequency time positions (n,k) of a rougher frequency time (NF,ND), interpolating the channel transmission factor (Hn,k) in the frequency time positions (n,k) of a finer frequency time grid, and calculating the unabbreviated channel impulse response (h≈n) by means of inverse Fourier transformation from the estimated or interpolated values (H^n,ϰ, H^n,k) of the channel transmission factor (Hn,k) in the frequency time positions (n,k) of the finer frequency time grid. For this purpose, optimized estimated values (H≈n,k) of the channel transmission factor (Hn,k) are determined in the individual frequency time positions (n,k) of the finer frequency time grid from receiving symbols (Rn,k) and from sending symbols (S∼n,k,S≈n,k) that are estimated by means of a decision from the receiving symbols (Rn,k).
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12.发明公开VERFAHREN ZUM BESTIMMEN DER RESTTRÄGERLEISTUNG BEI EINEM NACH DEM DVB-T-STANDARD IM 8K-MODUS QAM-MODULIERTEN MULTITRÄGERSIGNAL 有权方法用于确定所述靠支承在所述的事件之后的DVB-T标准8K模式值QAM调制MULTI载波信号
公开(公告)号：EP1254546A1
公开(公告)日：2002-11-06
申请号：EP00974556.3
申请日：2000-11-17
发明人： BALZ, Christoph , LIDL, Christina
CPC分类号： H04L27/2647
摘要： The aim of the invention is to detect the remaining carrier power on a multi-carrier signal that is QAM-modulated in the 8K mode according to the DVB-T-standard. Said signal is provided with a central carrier which is situated in the centre of the individual carriers and, at times, is a continual and, at times, a scattered pilot. The influence of the remaining carrier power on a carrier that is adjacent to the central carrier is detected and then converted to the central carrier.
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13.发明公开
公开(公告)号：EP1249089A2
公开(公告)日：2002-10-16
申请号：EP01907452.5
申请日：2001-01-16
发明人： BALZ, Christoph , FEICHT, Wolfgang
CPC分类号： H04L25/0228 , G01R13/02 , H04B17/23 , H04B17/309
摘要： In order to display the amplitude distortions of a transmission channel, the amplitude distribution of a measurement signal of a known amplitude distribution is measured at the output of the transmission channel. Based on a given multitude of amplitude measured values that are measured and digitized in succession, the frequency of occurrence of the amplitude distribution is then determined and displayed in adjacently connected amplitude windows.
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14.发明公开VERFAHREN ZUM EMPFANGSSEITIGEN BESTIMMEN DER AMPLITUDEN-IMBALANZ UND QUADRATURFEHLERS IN EINEM MULTITRÄGERSYSTEM 有权方法来确定接收端失衡震级和错误平方IN A MULTI SYSTEM
公开(公告)号：EP1219086A1
公开(公告)日：2002-07-03
申请号：EP00962437.0
申请日：2000-09-04
CPC分类号： H04L27/2647 , H04L27/3809 , H04L27/3863 , H04L2027/0016 , H04L2027/0024
摘要： The aim of the invention is to determine the user data constellation of a multi-carrier signal at the receiving end. Said signal is QAM modulated in the 2K mode according to the DVB-T standard and is provided with a central carrier that is situated in the centre of the individual carriers and is temporarily modulated with user data and temporarily represents a distributed pilot. To resolve the aim of the invention, the appearance frequency of all I/Q values pertaining to the portion of user data belonging to the central carrier is detected and the centre of said user data constellation is then detected.
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公开(公告)号：EP1125409A1
公开(公告)日：2001-08-22
申请号：EP99971982.6
申请日：1999-10-21
发明人： WOLF, Peter , BALZ, Christoph
CPC分类号： G01R13/0236 , H04L27/2647
摘要： For measuring and evaluating multi-carrier signals the I and/or Q components obtained by demodulation are integrated across several values and are graphically shown for every single carrier or combined carrier groups of the multi-carrier signal on the screen of a display unit. To this end, the individual carriers or carrier groups are applied side by side on the horizontal axis of a diagram and the I and/or Q components that pertain to said carriers or carrier groups are recorded along a vertical line.
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16.发明授权
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17.发明授权VERFAHREN ZUR ÜBERWACHUNG DER ZEITSYNCHRONITÄT VON SENDERN IN EINEM GLEICHWELLENNETZ 有权PROCEDURE用于在单频网络发射机的监视时间同步
公开(公告)号：EP1665592B1
公开(公告)日：2007-04-04
申请号：EP04764614.6
申请日：2004-08-30
IPC分类号： H04H3/00
CPC分类号： H04H20/67 , H04B7/2625 , H04N5/04 , H04N5/4401 , H04N17/004 , H04N21/4302 , H04N21/44209 , H04N21/6112
摘要： The invention relates to a method for monitoring the time synchronisation of a total of n emitters (2, 3, 4, 5, 6, 7, 8) in a common wave network (1). According to said network, a reference total pulse response (30) that belongs to the transmission channels of the n emitters (2,:3, 4, 5, 6, 7, 8) of the common wave network (1) is compared with a measured total pulse response (52) belonging to the transmission channels of the n emitters (2, 3, 4, 5, 6, 7, 8) of the common wave network (1). A reference pulse response (20) is fixed in the reference total pulse response (30) in relation to the pilot pulse response (29), on the basis of which the remaining reference pulse responses (21, 22, 23, 24, 25, 26, 27, 28) are referenced, in order to classify all of the synchronisation errors occurring in the common wave network (1) into a plurality of synchronisation error categories.
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公开(公告)号：EP1125390B1
公开(公告)日：2004-03-31
申请号：EP99947417.4
申请日：1999-09-23
发明人： WOLF, Peter , BALZ, Christoph
CPC分类号： H04L27/2647
摘要： The invention relates to a method for displaying the mean modulation error MERRMS of a multiple carrier (OFDM) signal in which: a) The square of the error vector is calculated according to the relation (I) for each actual modulation symbol I of each individual carrier k of the multiple carrier signal; b) this value mk is offset with the content of a storage location of a memory, said storage location being assigned to the same carrier k, which comprises the same number of storage locations as the OFDM signal carrier, according to relation (II) (iteration formula) with A2k,l+1: new measured value (instant l+1) which should be filed in storage location k of the memory A2; A2k,l: previous measured value (instant l) from storage location k of memory A2; mk: Actual measured error square for carrier k; k: Carrier number within the OFDM spectrum, grows with the frequency, k=0 ... Kmax; l: number of the symbol, grows with time, 0 VM is the quadratically weighted mean value of the amplitude of all ideal signal states of the modulation type, used each time, of a carrier modulated with useful data, and finally, d) this MERRMS value is then graphically represented with the number of the carriers as an abscissa for each individual carrier k as an ordinate value of a diagram.
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公开(公告)号：EP1125409B1
公开(公告)日：2004-03-24
申请号：EP99971982.6
申请日：1999-10-21
发明人： WOLF, Peter , BALZ, Christoph
CPC分类号： G01R13/0236 , H04L27/2647
摘要： For measuring and evaluating multi-carrier signals the I and/or Q components obtained by demodulation are integrated across several values and are graphically shown for every single carrier or combined carrier groups of the multi-carrier signal on the screen of a display unit. To this end, the individual carriers or carrier groups are applied side by side on the horizontal axis of a diagram and the I and/or Q components that pertain to said carriers or carrier groups are recorded along a vertical line.
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20.发明授权VERFAHREN ZUM VERARBEITEN VON DURCH EIN MEHRANTENNENSYSTEM GLEICHZEITIG EMPFANGENEN OFDM-SIGNALEN 有权一种用于处理由多个天线系统中相同的接收OFDM信号
公开(公告)号：EP1125377B1
公开(公告)日：2002-06-12
申请号：EP99948847.1
申请日：1999-09-23
CPC分类号： H04L27/2647 , H04B7/0845 , H04L1/06
摘要： The aim of the invention is to process OFDM signals which are simultaneously received via a multiple antenna system having a plurality of separate receive channels. To this end, the channel correction values or the confidence values are determined in the receive channels for each carrier of the OFDM signal while using known techniques. In addition, the I/Q values of each individual carrier of the OFDM signal which are obtained in the OFDM demodulator are weighted with these channel correction values or confidence values. Afterwards, the I/Q values weighted in such a manner are totaled.
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