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公开(公告)号：WO0247315A3
公开(公告)日：2003-01-23
申请号：PCT/EP0113778
申请日：2001-11-27
Applicant: ERICSSON TELEFON AB L M , ZIMMERMANN GERD , LI HUI , WENGER FABIAN , LINDSKOG JAN , PAULI MATHIAS
Inventor： ZIMMERMANN GERD , LI HUI , WENGER FABIAN , LINDSKOG JAN , PAULI MATHIAS
CPC classification number: H04L1/007 , H04L1/0003 , H04L1/0009 , H04L1/08
Abstract: In a packet transmission system, especially wireless transmission system, where data is transmitted in packets at different error protection levels and where the error protection level of one packet (= the succeeding packet) may differ from the error protection level of a preceding packet without providing code termination between the said preceding and the said succeeding packet the performance may degrade in case a different error protection level is used by the preceding packet and the succeeding packet. The invention proposes in these cases to insert a supplementary packet between the preceding and the succeeding packet whereby the error protection level of the supplementary packet is higher than the lowest error protection level that is used either by the preceding or the succeeding packet.
Abstract translation: 在分组传输系统中，特别是无线传输系统，其中数据以不同的错误保护级别以分组传输，并且一个分组（=后续分组）的错误保护级别可能不同于前一分组的错误保护级别而不提供 在前一个分组和后续分组使用不同的错误保护级别的情况下，所述前一个和所述后续分组之间的代码终止可能会降级。 本发明在这些情况下提出在前一个分组之间插入补充分组，由此补充分组的错误保护等级高于由前一个或后续分组使用的最低的错误保护等级。
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公开(公告)号：AT418823T
公开(公告)日：2009-01-15
申请号：AT01999073
申请日：2001-11-29
Applicant: ERICSSON TELEFON AB L M
Inventor： DAVIDSSON STEFAN , WALTHER ROGER , WENGER FABIAN , PAULI MATHIAS , SCHRAMM PETER , WACHSMANN UDO
Abstract: A radio receiver system ( 30 ) comprises a radio receiver ( 41 ), a receiver sample clock ( 60 ), which is used for sampling a modulated base-band signal; and a timing correction unit ( 100 ). The timing correction unit ( 100 ) performs, in the frequency domain, a timing drift compensation between a transmitter sample clock ( 66 ) and the receiver sample clock ( 60 ). In one example context of implementation, the plural modulated radio frequency carriers have been modulated using Orthogonal Frequency Division Multiplexing (OFDM).
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公开(公告)号：DE60229984D1
公开(公告)日：2009-01-02
申请号：DE60229984
申请日：2002-05-22
Applicant: ERICSSON TELEFON AB L M
Inventor： WENGER FABIAN , DETTMAR UWE , WACHSMANN UDO , SCHRAMM PETER
Abstract: A method and a device for providing timing information within a wireless communication system are described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results. Based on a signal energy within a time window of the received transmit signal incorrect timing information is detected.
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公开(公告)号：SE9803856L
公开(公告)日：2000-05-12
申请号：SE9803856
申请日：1998-11-11
Applicant: ERICSSON TELEFON AB L M
Inventor： WENGER FABIAN
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公开(公告)号：ES2313153T3
公开(公告)日：2009-03-01
申请号：ES05012900
申请日：2002-05-22
Applicant: ERICSSON TELEFON AB L M
Inventor： WENGER FABIAN , DETTMAR UWE , WACHSMANN UDO , SCHRAMM PETER
Abstract: Un método en un sistema de comunicaciones inalámbrico para proporcionar información de temporización para una señal de transmisión recibida, que comprende - correlacionar una o más partes de la señal de transmisión recibida con una señal de instrucción cuantificada para obtener uno o más resultados de correlación; y - determinar la información de temporización en base a los resultados de correlación; - detectar falsa alarma en base a la energía de una señal contenida dentro de una ventana de tiempo de la señal de transmisión recibida; - obtener uno o más resultados de correlación en forma de respuestas de impulsos estimadas de canal ([.]), caracterizado porque la energía de señal de respuesta de impulsos de canal contenida en la respectiva ventana de tiempo de la señal de transmisión recibida está determinada por cada instante de temporización posible, el paso de determinar la información de temporización en base a los resultados de la correlación comprende determinar la ventana de tiempo que contiene la energía máxima de señal (E_win,max), y la detección de falsa alarma se basa en la energía máxima de señal.
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Patent Agency Ranking
公开(公告)号：AT415023T
公开(公告)日：2008-12-15
申请号：AT05012900
申请日：2002-05-22
Applicant: ERICSSON TELEFON AB L M
Inventor： WENGER FABIAN , DETTMAR UWE , WACHSMANN UDO , SCHRAMM PETER
Abstract: A method and a device for providing timing information within a wireless communication system are described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results. Based on a signal energy within a time window of the received transmit signal incorrect timing information is detected.
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公开(公告)号：DE60223422T2
公开(公告)日：2008-08-21
申请号：DE60223422
申请日：2002-05-22
Applicant: ERICSSON TELEFON AB L M
Inventor： WENGER FABIAN , DETTMAR UWE , WACHSMANN UDO , SCHRAMM PETER
Abstract: A method and a device for providing timing information within a wireless communication system are described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results. Based on a signal energy within a time window of the received transmit signal incorrect timing information is detected.
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公开(公告)号：AT377880T
公开(公告)日：2007-11-15
申请号：AT05012901
申请日：2002-05-22
Applicant: ERICSSON TELEFON AB L M
Inventor： WENGER FABIAN , DETTMAR UWE , WACHSMANN UDO , SCHRAMM PETER
Abstract: A method and a device for providing timing information within a wireless communication system are described. The timing information is extracted from a received transmit signal. The inventive method comprises the steps of providing a training signal on the receiver side relating to a known signal portion of the transmit signal, scaling the training signal, quantizing the scaled training signal, correlating one or more parts of the received transmit signal with the scaled training signal to obtain one or more correlation results, and determining the timing information on the basis of the correlation results. Based on a signal energy within a time window of the received transmit signal incorrect timing information is detected.
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公开(公告)号：DE60113875T2
公开(公告)日：2006-04-20
申请号：DE60113875
申请日：2001-11-27
Applicant: ERICSSON TELEFON AB L M
Inventor： ZIMMERMANN GERD , LI HUI , WENGER FABIAN , LINDSKOG JAN , PAULI MATHIAS
Abstract: In a packet transmission system, especially wireless transmission system, where data is transmitted in packets at different error protection levels and where the error protection level of one packet (= the succeeding packet) may differ from the error protection level of a preceding packet without providing code termination between the said preceding and the said succeeding packet the performance may degrade in case a different error protection level is used by the preceding packet and the succeeding packet. The invention proposes in these cases to insert a supplementary packet between the preceding and the succeeding packet whereby the error protection level of the supplementary packet is higher than the lowest error protection level that is used either by the preceding or the succeeding packet.
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公开(公告)号：AU1861102A
公开(公告)日：2002-06-11
申请号：AU1861102
申请日：2001-11-29
Applicant: ERICSSON TELEFON AB L M
Inventor： DAVIDSSON STEFAN , WALTHER ROGER , WENGER FABIAN , PAULI MATHIAS , SCHRAMM PETER , WACHSMANN UDO
Abstract: A radio receiver system ( 30 ) comprises a radio receiver ( 41 ), a receiver sample clock ( 60 ), which is used for sampling a modulated base-band signal; and a timing correction unit ( 100 ). The timing correction unit ( 100 ) performs, in the frequency domain, a timing drift compensation between a transmitter sample clock ( 66 ) and the receiver sample clock ( 60 ). In one example context of implementation, the plural modulated radio frequency carriers have been modulated using Orthogonal Frequency Division Multiplexing (OFDM).
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