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公开(公告)号：AT377918T
公开(公告)日：2007-11-15
申请号：AT01951086
申请日：2001-06-18
Applicant: QUALCOMM INC
Inventor： PADOVANI ROBERTO , BENDER PAUL , JALALI AHMAD , JUDSON BRUCE , WHEATLEY CHARLES
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公开(公告)号：DE69508664D1
公开(公告)日：1999-05-06
申请号：DE69508664
申请日：1995-02-01
Applicant: QUALCOMM INC
Inventor： WHEATLEY CHARLES
Abstract: A link quality improvement system for a cellular communication system in which portable units are used to facilitate communication of information signals between system users, via at least one cell-site, using code division multiple access spread spectrum communication signals. The system enables users to improve the quality of reverse communication links from the portable units to the cell-site by providing to each system user a link quality signal indicative of power received at the cell-site relative to an optimum level of received power. At a cell-site communicating with a portable unit associated with a particular system user, the portable unit transmitted power is measured as received at the cell-site. A command signal is generated at the cell-site and transmitted to the portable unit for adjusting portable unit transmitter power. The command signals are also accumulated in order to enable generation of a link quality signal in response thereto. In a preferred implementation the link quality signal is an audible interference signal inducing the system user to adjust orientation of the portable communication unit so as to improve signal quality on the reverse link.
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公开(公告)号：DE69131074D1
公开(公告)日：1999-05-06
申请号：DE69131074
申请日：1991-11-27
Applicant: QUALCOMM INC
Inventor： WHEATLEY CHARLES , PUNCH DEREK
Abstract: A closed loop automatic gain control (AGC) circuit with high dynamic range capabilities having an amplifier circuit for receiving an input signal, which is susceptible to variations in signal power, and a control signal. The amplifier circuit is responsive to the control signal for amplifying the input signal at a gain level corresponding to the control signal so as to provide a corresponding output signal. A measurement circuit is coupled to the amplifier means for measuring logarithmic signal power of the amplified input signal and providing a corresponding linear measurement signal. An integration circuit is included for receiving the measurement signal, and a reference signal which corresponds to a desired signal power of the output signal. The integration circuit integrates with respect to time the difference between the measurement signal and the reference signal, and generates the control signal which corresponds to the result of the integration.
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公开(公告)号：DE69032044T3
公开(公告)日：2007-10-25
申请号：DE69032044
申请日：1990-11-05
Applicant: QUALCOMM INC
Inventor： GILHOUSEN KLEIN , PADOVANI ROBERTO , WHEATLEY CHARLES
Abstract: A spread spectrum receiver subsystem for utilization in a CDMA cellular telephone having a searcher receiver for scanning the time domain so as to use the PN processing gain and time discrimination properties of spread spectrum coding to determine the location in the time domain and the received signal strength of multiple receptions of a pilot signal traveling upon one or more physical propagation paths to reception. The searcher receiver provides a control signal indicative of the received pilot signals of greatest strength and corresponding time relationship. A data receiver receives spread spectrum communication signals accompanying each received pilot signal and is responsive to the searcher control signal for acquiring and demodulating a spread spectrum communication signal, concomitant with the pilot signal of greatest signal strength, and thus providing a corresponding information bearing encoded output signal.
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公开(公告)号：DK1492262T3
公开(公告)日：2007-01-29
申请号：DK04021031
申请日：1994-11-22
Applicant: QUALCOMM INC
Inventor： ZEHAVI EPHRAIM , WHEATLEY CHARLES , PADOVANI ROBERTO
Abstract: A method for providing power control with variable data rate, the method comprising: receiving a data frame having an input data rate selected from a plurality of possible input data rates; selecting an encoding rate based on the input data rate; encoding data frames to produce output symbols, repeating output symbols using first and second generating polynomials and multiplexing the repeated output symbols, selecting a puncturing format to puncture data bits and producing output data having a constant output data rate for a number of possible input data rates based on a combination of input data rates, selected encoding rate and selected puncturing format for providing said variable data rate communication link; determining a frame error rate for a number of possible input data rates; calculating differences between the frame error rates and a target error rate and adjusting the power depending on whether the difference is greater, equal or less than a predetermined threshold.
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Patent Agency Ranking
公开(公告)号：DE69508664T2
公开(公告)日：1999-10-21
申请号：DE69508664
申请日：1995-02-01
Applicant: QUALCOMM INC
Inventor： WHEATLEY CHARLES
Abstract: A link quality improvement system for a cellular communication system in which portable units are used to facilitate communication of information signals between system users, via at least one cell-site, using code division multiple access spread spectrum communication signals. The system enables users to improve the quality of reverse communication links from the portable units to the cell-site by providing to each system user a link quality signal indicative of power received at the cell-site relative to an optimum level of received power. At a cell-site communicating with a portable unit associated with a particular system user, the portable unit transmitted power is measured as received at the cell-site. A command signal is generated at the cell-site and transmitted to the portable unit for adjusting portable unit transmitter power. The command signals are also accumulated in order to enable generation of a link quality signal in response thereto. In a preferred implementation the link quality signal is an audible interference signal inducing the system user to adjust orientation of the portable communication unit so as to improve signal quality on the reverse link.
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公开(公告)号：AT449477T
公开(公告)日：2009-12-15
申请号：AT04024318
申请日：1996-01-17
Applicant: QUALCOMM INC
Inventor： PADOVANI ROBERTO , TIEDEMANN EDWARD , ODENWALDER JOSEPH , ZEHAVI EPHRAIM , WHEATLEY CHARLES
IPC: H04J3/16 , H03M13/23 , H04B1/707 , H04B1/7075 , H04B1/7115 , H04B7/005 , H04B7/26 , H04J3/00 , H04J3/22 , H04J11/00 , H04J13/00 , H04J13/10 , H04J13/18 , H04L1/00 , H04L1/08 , H04L5/02 , H04W52/26
Abstract: A method and apparatus for arranging various types of data, and at various rates, into a uniquely structured format for transmission. Data for transmission formatting may be speech data provided by vocoder (14) or different types of secondary traffic. The data organized into frames of a predetermined time duration for transmission by a microprocessor (18). The data frames are organized, depending on the data, to be at one of several data rates. Vocoder data is provided by vocoder (14) at one of several data rates and is organized in the frame according to a predetermined format. Frames may be formatted with a sharing of vocoder data with non-vocoder data to be at a highest frame data rate. Different types of non-vocoder data may be organized so as to also be at the highest frame data rate. Additional control data may be provided within the data frames to support various aspects of the transmission and recovery upon reception.
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公开(公告)号：DE69032105T3
公开(公告)日：2003-12-18
申请号：DE69032105
申请日：1990-11-05
Applicant: QUALCOMM INC
Inventor： GILHOUSEN KLEIN , PADOVANI ROBERTO , WHEATLEY CHARLES
IPC: H04B7/005 , H04B7/26 , H04W52/00 , H04W52/02 , H04W52/06 , H04W52/08 , H04W52/10 , H04W52/12 , H04W52/40 , H04W52/52
Abstract: A power control system for a cellular mobile telephone system in which system users communicate information signals between one another via at least one cell site using code division multiple access spread spectrum communication signals. The power control system controls transmission signal power for each cellular mobile telephone in the cellular mobile telephone system wherein each cellular mobile telephone has an antenna, transmitter and receiver and each cell-site also has an antenna, transmitter and receiver. Cell-site transmitted signal power is measured as received at the mobile unit. Transmitter power is adjusted at the mobile unit in an opposite manner with respect to increases and decreases in received signal power. A power control feedback scheme may also be utilized. At the cell-site communicating with the mobile unit, the mobile unit transmitted power is measured as received at the cell-site. A command signal is generated at the cell-site and transmitted to the mobile unit for further adjusting mobile unit transmitter power corresponding to deviations in the cell site received signal power. The feedback scheme is used to further adjust the mobile unit transmitter power so as to arrive at the cell-site at a desired power level.
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公开(公告)号：DE69033402D1
公开(公告)日：2000-01-27
申请号：DE69033402
申请日：1990-11-05
Applicant: QUALCOMM INC
Inventor： GILHOUSEN KLEIN , PADOVANI ROBERTO , WHEATLEY CHARLES
Abstract: In a cellular telephone system a system for directing communications between a mobile user and cell-sites as a mobile user changes cell-site service areas. The mobile user includes an apparatus for, while in communication with another system user via one cell-site, determining a transition of the mobile user from the cell-site service area to the service area of another cell-site. The system includes circuitry responsive to the indication for coupling communications between the mobile user and the other system user via the new cell-site while the mobile user also remains in communication with the system user via the first cell-site. The system further includes apparatus responsive to the coupling of the communications between the mobile user and the other system user via the new cell-site for terminating the communications between the mobile user and another system user via cell-site with communications continuing between the mobile user and the system user via the new cell-site.
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公开(公告)号：DE69131230D1
公开(公告)日：1999-06-17
申请号：DE69131230
申请日：1991-10-15
Applicant: QUALCOMM INC
Inventor： WHEATLEY CHARLES
Abstract: An amplification circuit having a compensation circuit for receiving a control signal and generating a corresponding compensation signal according to predetermined compensation characteristics. An input amplification circuit is provided for, receiving an input signal and the compensation signal amplifying the input signal at an input gain level determined by the compensation signal and providing a corresponding input amplification circuit output signal. A filter element receives and filters unwanted frequency components from the input amplification circuit output signal. An output amplification circuit is provided for, receiving the filtered input amplification circuit output signal and the compensation signal, amplifying the filtered input amplification circuit output signal at an output gain level determined by the compensation signal and providing a corresponding output amplification circuit output signal.
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