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公开(公告)号：EE200000183A
公开(公告)日：2001-04-16
申请号：EEP200000183
申请日：1998-10-30
Applicant: TELIA AB
Inventor： BAHLENBERG GUNNAR , BENGTSSON DANIEL , HAAKANSSON SIWERT , ISAKSSON ANDERS , ISAKSSON LARS-AAKE , ISAKSSON MIKAEL , JOHANSSON MAGNUS , LAHTI MAURITZ , LJUNGGREN LIS-MARI , LUNDBERG HANS , NORDSTROEM TOMAS , OLSSON LENNART , OLOFSSON SVEN-RUNE , STEFANSSON TOMAS , OEMAN HANS , OEKVIST GOERAN , OEDLING PER , DENTGEN PETRA , SJOEBERG FRANK
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公开(公告)号：NO20002139A
公开(公告)日：2000-06-29
申请号：NO20002139
申请日：2000-04-27
Applicant: TELIA AB
Inventor： BAHLENBERG GUNNAR , BENGTSSON DANIEL , HOKANSSON SIWERT , ISAKSSON ANDERS , ISAKSSON LARS-KE , ISAKSSON MIKAEL , HANSSON MAGNUS , LAHTI MAURTIZ , LJUNGGREN LIS-MARIE , LUNDBERG HANS , NORDSTROEM TOMAS , OLSSON LENNART , OLOFSSON SVEN-RUNE , STEFANSSON TOMAS , IMAN HANS , IKVIST GOERAN , IDLING PER , DENTGEN PETRA , SJOEBERG FRANCK
IPC: H04B3/23
CPC classification number: H04B3/23
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公开(公告)号：NO20002138D0
公开(公告)日：2000-04-27
申请号：NO20002138
申请日：2000-04-27
Applicant: TELIA AB
Inventor： BAHLENBERG GUNNAR , BENGTSSON DANIEL , HOKANSSON SIWERT , ISAKSSON ANDERS , ISAKSSON LARS-KE , ISAKSSON MIKAEL , JOHANSSON MAGNUS , LAHTI MAURTIZ , LJUNGGREN LIS-MARIE , LUNDBERG HANS , NORDSTROEM TOMAS , OLSSON LENNART , OLOFSSON SVEN-RUNE , STEFANSSON TOMAS , IMAN HANS , IKVIST GOERAN , IDLING PER , DENTGEN PETRA , SJOEBERG FRANCK
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公开(公告)号：NO990777D0
公开(公告)日：1999-02-19
申请号：NO990777
申请日：1999-02-19
Applicant: TELIA AB
Inventor： ISAKSSON MIKAEL , JOHANSSON MAGNUS , TONVALL HARRY , OLSSON LENNART , STEFANSSON TOMAS , IHMAN HANS , BAHLENBERG GUNNAR , ISAKSSON ANDERS , IKVIST GOERAN , LJUNGGREN LIS-MARIE , NORDSTROEM TOMAS , ISAKSSON LARS-AAKE , BENGTSSON DANIEL , HOKANSSON SIWERT , WEN YE
Abstract: A multi-carrier transmission system using orthogonal carriers with high order QAM constellations for the transmission of a plurality of bits per carrier and symbol. The system uses some method for the determination of an inverse channel model to be used in the equalization process. In the frequency domain, this is normally based on an estimate of the channel attenuation and phase for each carrier. A simplified method of equalization is provided which uses data at the symbol carrier input and output to adaptively estimate an inverse channel model.
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公开(公告)号：SE506640C2
公开(公告)日：1998-01-26
申请号：SE9603193
申请日：1996-09-02
Applicant: TELIA AB
Inventor： ISAKSSON MIKAEL , JOHANSSON MAGNUS , TONVALL HARRY ERLAND , OLSSON LENNART , STEFANSSON TOMAS , OEHMAN HANS , BAHLENBERG KJELL GUNNAR , ISAKSSON ANDERS IMANUEL , OEKVIST SVEN GOERAN , LJUNGGREN KARIN LIS-MARI , NORDSTROEM TOMAS , ISAKSSON LARS-AAKE , BENGTSSON DANIEL , OEDLING PER , YE WEN , HAAKANSSON SIWERT
IPC: H04L20060101 , H04L5/06 , H04L27/26
Abstract: The multiple carrier transmission system transmits channel information between two transceivers using several subcarriers modulated with symbols. Each symbol represents several bits. Each transceiver has a receiver and a transmitter. A fixed maximum value is determined for the number of bits for each symbol. The system determines the bit capacity per symbol of each of the subcarriers and increases the number of bits represented by a symbol transmitted over those subcarriers having a capacity less than the fixed maximum value to the maximum value by the addition of channel coding bits.
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Patent Agency Ranking
公开(公告)号：SE9603196L
公开(公告)日：1997-11-30
申请号：SE9603196
申请日：1996-09-02
Applicant: TELIA AB
Inventor： ISAKSSON MIKAEL , JOHANSSON MAGNUS , TONVALL HARRY ERLAND , OLSSON LENNART , STEFANSSON TOMAS , OEHMAN HANS , BAHLENBERG KJELL GUNNAR , ISAKSSON ANDERS IMANUEL , OEKVIST SVEN GOERAN , LJUNGGREN KARIN LIS-MARI , NORDSTROEM TOMAS , ISAKSSON LARS-AAKE , BENGTSSON DANIEL , YE WEN , HAAKANSSON SIWERT
IPC: H04L20060101 , H04L5/06 , H04L27/26
Abstract: The system includes a digital receiver unit and transmission unit. The receiver unit including a symbol detection unit. The system determines a parameter for each individual carrier wave. The parameter indicate a deviation in a received signal from a corresponding constellation point. The parameter is compared with an upper and a lower limit. When the parameter is outside the limits the used constellation is altered in order to modulate the carrier wave to a neighbouring constellation. The symbol detection unit is used to determine the parameter for a carrier wave. The parameter is a ratio d2/o2, where d is the shortest distance between adjoining constellations, o is a standard deviation, and o2 is the variance in the deviations in the input and output signal values in the symbol detection unit.
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公开(公告)号：SE9603195L
公开(公告)日：1997-11-25
申请号：SE9603195
申请日：1996-09-02
Applicant: TELIA AB
Inventor： ISAKSSON MIKAEL , JOHANSSON MAGNUS , TONVALL HARRY ERLAND , OLSSON LENNART , STEFANSSON TOMAS , OEHMAN HANS , BAHLENBERG KJELL GUNNAR , ISAKSSON ANDERS IMANUEL , OEKVIST SVEN GOERAN , LJUNGGREN KARIN LIS-MARI , NORDSTROEM TOMAS , ISAKSSON LARS-AAKE , BENGTSSON DANIEL , YE WEN , HAAKANSSON SIWERT
IPC: H04L20060101 , H04L5/06 , H04L27/26 , H04L27/34
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公开(公告)号：SE9603189L
公开(公告)日：1997-11-25
申请号：SE9603189
申请日：1996-09-02
Applicant: TELIA AB
Inventor： ISAKSSON MIKAEL , JOHANSSON MAGNUS , TONVALL HARRY E , OLSSON LENNART , STEFANSSON TOMAS , OEHMAN HANS , BAHLENBERG KJELL GUNNAR , ISAKSSON ANDERS I , OEKVIST SVEN GOERAN , LJUNGGREN KARIN L-M , NORDSTROEM TOMAS , ISAKSSON LARS-AAKE , BENGTSSON DANIEL , YE WEN , HAAKANSSON SIWERT
IPC: H04L20060101 , H04L5/06 , H04L27/26
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公开(公告)号：SE9603195D0
公开(公告)日：1996-09-02
申请号：SE9603195
申请日：1996-09-02
Applicant: TELIA AB
Inventor： ISAKSSON MIKAEL , JOHANSSON MAGNUS , TONVALL HARRY ERLAND , OLSSON LENNART , STEFANSSON TOMAS , OEHMAN HANS , BAHLENBERG KJELL GUNNAR , ISAKSSON ANDERS IMANUEL , OEKVIST SVEN GOERAN , LJUNGGREN KARIN LIS-MARI , NORDSTROEM TOMAS , ISAKSSON LARS-AAKE , BENGTSSON DANIEL
IPC: H04L20060101 , H04L5/06 , H04L27/26 , H04L27/34 , H04L
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公开(公告)号：SE9603190D0
公开(公告)日：1996-09-02
申请号：SE9603190
申请日：1996-09-02
Applicant: TELIA AB
Inventor： ISAKSSON MIKAEL , JOHANSSON MAGNUS , TONVALL HARRY E , OLSSON LENNART , STEFANSSON TOMAS , OEHMAN HANS , BAHLENBERG KJELL GUNNAR , ISAKSSON ANDERS I , OEKVIST SVEN GOERAN , LJUNGGREN KARIN L-M , NORDSTROEM TOMAS , ISAKSSON LARS-AAKE , BENGTSSON DANIEL
IPC: H04L20060101 , H04L5/06 , H04L27/26 , H04L
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