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    Method and apparatus for controlling transmission energy in communication system employing orthogonal transmit diversity
    131.
    发明专利
    Method and apparatus for controlling transmission energy in communication system employing orthogonal transmit diversity 未知

    公开(公告)号：AU5899600A

    公开(公告)日：2001-01-31

    申请号：AU5899600

    申请日：2000-06-28

    Applicant: QUALCOMM INC

    Inventor： LUNDBY STEIN A ,  RAZOUMOV LEONID

    IPC: H04B7/005 ,  H04B7/06 ,  H04B7/26

    Abstract: The present invention is a novel and improved method and apparatus for control transmission energy. The present invention describes a closed loop power control system that operates in conjunction with a transmitter using orthogonal transmit diversity. In a first embodiment of the present invention, the receiver evaluates the signal to noise ratio (SNR) of the two components of the signal. A weighted sum of these two components emphasizing the weaker of the two signals is generated and used in the generation of the power control commands. In a second embodiment of the present invention, the SNR of the two component signals are calculated and two separate power control commands are generated based on a corresponding one of the calculated SNR values.

    132.
    发明专利
    未知

    公开(公告)号：TR200000621T2

    公开(公告)日：2000-11-21

    申请号：TR200000621

    申请日：1998-09-08

    Applicant: QUALCOMM INC

    Inventor： JR EDWARD G TIEDEMANN ,  ODENWALDER JOSEPH P ,  LUNDBY STEIN A

    IPC: H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04W16/00 ,  H04W16/24 ,  H04W16/32 ,  H04W48/08 ,  H04W48/16

    Abstract: A method and apparatus for providing orthogonal spot beams (14a, 14b), sectors (16a, 16b), and picocells (18). The transmissions can be made orthogonal by using orthogonal auxiliary pilots and different Walsh traffic channels in adjacent areas. In accordance with the IS-95 standard, the pilot signal is covered with the 64-chip Walsh sequence zero. The 64-chip all zeros Walsh sequence can be designated as P and the 64-chip all one sequence can be designated as M. In the present invention, additional pilot signals can be provided by concatenating 64-chip all zeros P and all ones M sequences. Thus, for two pilot signals, pilot Walsh sequences of PP and PM can be used. For four pilot signals, pilot Walsh sequences of PPPP, PMPM, PPMM, and PMMP can be used. The present invention can be extended such that any required number of pilot Walsh sequences can be generated by substituting each bit in an K-bit Walsh sequence with the 64-chip all zeros P or all ones M sequence depending on the value of that bit.

    133.
    发明专利
    未知

    公开(公告)号：FI20001072A

    公开(公告)日：2000-08-01

    申请号：FI20001072

    申请日：2000-05-08

    Applicant: QUALCOMM INC

    Inventor： TIEDEMANN JR EDWARD G ,  WHEATLEY III CHARLES E ,  ODENWALDER JOSEPH P ,  LUNDBY STEIN A

    IPC: H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04B

    Abstract: A method and apparatus for providing diversity transmissions to a mobile unit from a transmitting station having at least first and second antennas by repeatedly switching between the two antennas during the transmission of information to the receiving unit. Message information is transmitted from the first antenna in the transmitting station to the receiving unit. After the start of the transmission of the message information from the first antenna, transmission of the message information from the first antenna to the receiving unit terminates and transmission of the message information from the second antenna in the transmitting station to the receiving unit is initiated. Some time after transmission of the message information from second antenna is initiated, the transmission of the message information from the second antenna to the receiving unit terminates and transmission of the message information from the first antenna in the transmitting station to the receiving unit is initiated. Repeated switching between the first and second antennas is achieved by repeating the process. The switching results in diversity transmissions that improve the ability of a receiving unit to receive the coded and interleaved transmitted message information from the transmitting station. The interleaver disperses the encoded symbols in each antenna dwell period such that the decoder decisions are based on a mix of symbols form each antenna. Therefore the decoder decisions are unreliable only when the mix of symbols from the different antennas, with different fading characteristics, are unreliable over the span of symbols the decoder uses in its decision process.

    134.
    发明专利
    未知

    公开(公告)号：NO20002805D0

    公开(公告)日：2000-05-31

    申请号：NO20002805

    申请日：2000-05-31

    Applicant: QUALCOMM INC

    Inventor： ODENWALDER JOSEPH P ,  WHEATLEY III CHARLES E ,  LUNDBY STEIN A ,  TIEDEMANN JR EDWARD G

    IPC: H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04B

    Abstract: A method and apparatus for providing diversity transmissions to a mobile unit from a transmitting station having at least first and second antennas by repeatedly switching between the two antennas during the transmission of information to the receiving unit. Message information is transmitted from the first antenna in the transmitting station to the receiving unit. After the start of the transmission of the message information from the first antenna, transmission of the message information from the first antenna to the receiving unit terminates and transmission of the message information from the second antenna in the transmitting station to the receiving unit is initiated. Some time after transmission of the message information from second antenna is initiated, the transmission of the message information from the second antenna to the receiving unit terminates and transmission of the message information from the first antenna in the transmitting station to the receiving unit is initiated. Repeated switching between the first and second antennas is achieved by repeating the process. The switching results in diversity transmissions that improve the ability of a receiving unit to receive the coded and interleaved transmitted message information from the transmitting station. The interleaver disperses the encoded symbols in each antenna dwell period such that the decoder decisions are based on a mix of symbols form each antenna. Therefore the decoder decisions are unreliable only when the mix of symbols from the different antennas, with different fading characteristics, are unreliable over the span of symbols the decoder uses in its decision process.

    135.
    发明专利
    未知

    公开(公告)号：NO20001153D0

    公开(公告)日：2000-03-07

    申请号：NO20001153

    申请日：2000-03-07

    Applicant: QUALCOMM INC

    Inventor： TIEDEMANN JR EDWARD G ,  LUNDBY STEIN A ,  ODENWALDER JOSEPH P

    IPC: H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10 ,  H04W16/00 ,  H04W16/24 ,  H04W16/32 ,  H04W48/08 ,  H04W48/16 ,  H04J ,  H04B

    Abstract: A method and apparatus for providing orthogonal spot beams (14a, 14b), sectors (16a, 16b), and picocells (18). The transmissions can be made orthogonal by using orthogonal auxiliary pilots and different Walsh traffic channels in adjacent areas. In accordance with the IS-95 standard, the pilot signal is covered with the 64-chip Walsh sequence zero. The 64-chip all zeros Walsh sequence can be designated as P and the 64-chip all one sequence can be designated as M. In the present invention, additional pilot signals can be provided by concatenating 64-chip all zeros P and all ones M sequences. Thus, for two pilot signals, pilot Walsh sequences of PP and PM can be used. For four pilot signals, pilot Walsh sequences of PPPP, PMPM, PPMM, and PMMP can be used. The present invention can be extended such that any required number of pilot Walsh sequences can be generated by substituting each bit in an K-bit Walsh sequence with the 64-chip all zeros P or all ones M sequence depending on the value of that bit.

    método e equipamento para o feedback de qualidade de link em uma comunicação sem fio
    137.
    发明专利
    método e equipamento para o feedback de qualidade de link em uma comunicação sem fio 未知

    公开(公告)号：BRPI0207875B1

    公开(公告)日：2016-04-12

    申请号：BR0207875

    申请日：2002-01-23

    Applicant: QUALCOMM INC

    Inventor： RAZOUMOV LEONID ,  LUNDBY STEIN A

    IPC: H04B7/005 ,  H04B7/26 ,  H04W52/08 ,  H04W52/22 ,  H04W52/24 ,  H04W52/60

    Abstract: "método e equipamento para o feedback de qualidade de link em uma comunicação sem fio". trata-se de um método e um equipamento para transmitir realimentação (feedback) de qualidade de link a um transmissor (32, 34). em uma modalidade, uma mensagem de qualidade de link periódica é transmitida em um canal conectado por porta, enquanto indicadores diferenciais contínuos são transmitidos. entre as mensagens de qualidade, os indicadores diferenciais rastreiam a qualidade do link. as mensagens de qualidade periódicas proporcionam sincronização com o transmissor e o receptor (36, 38). uma codificação é aplicada às informações de realimentação que identificam o transmissor. em uma modalidade, uma estação remota inclui um analisador diferencial (212) para determinar a alteração nas medições de qualidade de canal sucessivas. em uma modalidade alternativa, as informações de realimentação de qualidade de link são conectadas por porta de acordo com a condição do canal.

    138.
    发明专利
    未知

    公开(公告)号：BR0011968B1

    公开(公告)日：2014-08-12

    申请号：BR0011968

    申请日：2000-06-27

    Applicant: QUALCOMM INC

    Inventor： LUNDBY STEIN A

    IPC: H04B7/005 ,  H04B7/26

    Abstract: A method and apparatus for determining a position of a mobile satellite positioning system (SPS) receiver is described. A position of a mobile satellite positioning system (SPS) receiver is determined by initially determining a plurality of satellite pseudoranges between said mobile SPS receiver and a corresponding plurality of satellites. Then, at least one non-satellite pseudomeasurement is determined. Finally, a condition of at least one of said plurality of satellite pseudoranges is determined.

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