11.
    发明专利
    未知

    公开(公告)号:AT363771T

    公开(公告)日:2007-06-15

    申请号:AT98903591

    申请日:1998-01-27

    Applicant: QUALCOMM INC

    Abstract: A novel and improved method for performing transmit power control is described. A signal is transmitted at a transmit power and includes a traffic channel transmitted at a traffic channel transmit power, and a pilot channel transmitting at a pilot channel transmit power. The receive energy of the pilot channel is measured, and compared with a threshold. A power control command is generated and transmitted to the system generating the signal. This determines whether the command is to be applied to either the traffic channel, the pilot channel, or the entire signal. The power of the determined channel(s) is adjusted accordingly.

    Sistema y procedimiento para usar un espacio de código en una red de comunicación de amplio espectro

    公开(公告)号:ES2688930T3

    公开(公告)日:2018-11-07

    申请号:ES04717989

    申请日:2004-03-05

    Applicant: QUALCOMM INC

    Abstract: Un transmisor operable para comunicarse con un receptor a través de un canal de comunicación inalámbrico, en el que el transmisor comprende: un subsistema de procesamiento (228); y un subsistema transmisor (222) acoplado al subsistema de procesamiento; en el que el subsistema de procesamiento (228) está configurado para demultiplexar un flujo de datos inicial en una pluralidad de flujos de datos intermedios dividiendo todos los símbolos modulados del flujo de datos inicial directamente en porciones disjuntas de símbolos modulados, en el que cada porción disjunta es una diferente de la pluralidad de flujos de datos intermedios y tiene una cantidad diferente de símbolos modulados, y cubre (472, 473) cada uno de los flujos de datos intermedios con uno diferente de al menos dos códigos de dispersión diferentes, en el que los códigos de dispersión son códigos de dispersión de longitud diferente; y en el que el subsistema transmisor (222) está configurado para transmitir un flujo de datos final que resulta de la pluralidad cubierta de flujos de datos intermedios en un primer canal de comunicación inalámbrico.

    14.
    发明专利
    未知

    公开(公告)号:AT462283T

    公开(公告)日:2010-04-15

    申请号:AT04776208

    申请日:2004-05-28

    Applicant: QUALCOMM INC

    Abstract: A method and apparatus provides for efficient data rate control and power control processes by transmitting a primary and a secondary pilot channel associated with a data channel in the reverse (uplink) link. The primary and secondary pilot channels are used for decoding the data. A ratio of power levels of the primary and secondary pilot channels is based on at least one of the data rate and payload size of the data channel. It is determined whether the transmission of the primary pilot channel and the secondary pilot channel associated with the data channel is necessary based on comparing one of the data rate and the payload size of the channel in the reverse link to a predetermined value. The power level of the primary pilot channel is maintained independent of at least one of data rate and payload size of the data channel. The power level of the secondary pilot channel may be adjusted based on at least one of data rate and payload size of the data channel.

    16.
    发明专利
    未知

    公开(公告)号:AT368974T

    公开(公告)日:2007-08-15

    申请号:AT97953368

    申请日:1997-12-19

    Applicant: QUALCOMM INC

    Abstract: A novel and improved method for implementing a high-transmission-rate over-the-air interface is described. A transmit system provides an in-phase channel set (90) and a quadrature-phase channel set (92). The in-phase channel set (90) is used to provide a complete set of orthogonal medium rate control and traffic channels. The quadrature-phase channel (92) set is used to provide a high-rate supplemental channel and an extended set of medium rate channels that are orthogonal to each other and the original medium rate channels. The high-rate supplemental channel is generated over a set of medium rate channels using a short channel code. The medium rate channel are generated using a set of long channel codes.

    17.
    发明专利
    未知

    公开(公告)号:AT362232T

    公开(公告)日:2007-06-15

    申请号:AT98931756

    申请日:1998-06-30

    Applicant: QUALCOMM INC

    Abstract: A set of individually gain adjusted subscriber channels (A, B, C, Pilot) are formed via the use of a set of orthogonal subchannel codes (Walsh+-, Walsh++--) having a small number of PN spreading chips per orthogonal waveform period. Data to be transmitted via one of the transmit channels is low code rate error correction encoded and sequence repeated before being modulated with one of the subchannel codes, gain adjusted, and summed with data modulated using the other subchannel codes. The resulting summed data (316) is modulated using a user long code and a pseudorandom spreading code (PN code) and upconverted for transmission. The use of the short orthogonal codes provides interference suppression while still allowing extensive error correction coding and repetition for time diversity to overcome the Raleigh fading commonly experienced in terrestrial wireless systems. The set of sub-channel code may comprise four Walsh codes, each orthogonal to the remaining codes of the set. The use of four sub-channels is preferred as it allows shorter orthogonal codes to be used, however, the use of a greater number of channels and therefore longer codes is acceptable. Preferably, the pilot data and control data are combined onto one channel. The remaining two transmit channels are used for transmitting non-specified digital data including user data or signaling data, or both.

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