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公开(公告)号：DE69932175D1
公开(公告)日：2006-08-10
申请号：DE69932175
申请日：1999-10-26
Applicant: QUALCOMM INC
Inventor： ANTONIO P , HAMDY WALID
Abstract: A detector is used to sample of set of power measurements of a receive signal. The receive signal may comprise one or more signals from remote users as well as interference. A variance of the set of power measurements is also determined. The variance is compared to an overload threshold value. If the variance exceeds the overload threshold value, for some period of time, the system is declared to be operating at a potentially unstable point. In this state, future connection originations are denied.
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公开(公告)号：DE69934816T2
公开(公告)日：2007-10-31
申请号：DE69934816
申请日：1999-11-09
Applicant: QUALCOMM INC
Abstract: The information signals are transferred to end users, customers, or service subscribers using at least two signal sources, generally satellites, and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.
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公开(公告)号：DE69736705T2
公开(公告)日：2007-09-13
申请号：DE69736705
申请日：1997-04-15
Applicant: QUALCOMM INC
Inventor： ANTONIO P , GILHOUSEN S
Abstract: A system and method for reducing radio frequency interference arising in connection with pulsed transmission over time division multiplexed communication channels. In a first embodiment, a subscriber station is nominally assigned all of the slots of each frame of a first transmit channel. By transmitting RF energy substantially continuously, the subscriber station reduces interference arising from pulsed transmission. In a second embodiment, a subscriber station is nominally assigned one or more slots of each frame of a primary channel for conventional transmission of useful information, and is also instructed to continuously transmit RF energy over an auxiliary channel at times other than during the assigned primary channel slots. In this way, interference generated in the vicinity of the subscriber station is reduced due to the substantially continuous transmission of RF energy by the subscriber station. More than one subscriber station may simultaneously utilize the auxiliary channel during reduced interference mode operation.
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公开(公告)号：DE69431923T2
公开(公告)日：2003-11-06
申请号：DE69431923
申请日：1994-10-27
Applicant: QUALCOMM INC
Abstract: An apparatus that automatically adjusts the adaptation block size for a least-mean square (LMS) adaptive filter depending on the input signal-to-noise ratio (SNR) is disclosed. The apparatus monitors the instantaneous SNR and continually adjusts the block size to provide high noise immunity, thereby increasing the convergence speed of the filter and decreasing the asymptotic mean-square error. An exemplary embodiment of the present invention is presented in the context of acoustic echo cancellation, though it is noted that the adaptive filter of the present invention is useful in any environment in which the noise characteristics are subject to change.
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公开(公告)号：DE69934816D1
公开(公告)日：2007-02-22
申请号：DE69934816
申请日：1999-11-09
Applicant: QUALCOMM INC
Abstract: The information signals are transferred to end users, customers, or service subscribers using at least two signal sources, generally satellites, and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.
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Patent Agency Ranking
公开(公告)号：DE69627353T2
公开(公告)日：2004-03-04
申请号：DE69627353
申请日：1996-08-29
Applicant: QUALCOMM INC
Abstract: A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, where spread spectrum signal is comprised of a series of code symbol modulated with a pseudonoise (PN) sequence. The TDD repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.
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公开(公告)号：DE69636435T2
公开(公告)日：2007-02-22
申请号：DE69636435
申请日：1996-06-07
Applicant: QUALCOMM INC
IPC: H04B5/00 , H04B7/26 , H01Q13/22 , H01Q21/29 , H04B7/02 , H04B7/04 , H04B7/06 , H04B7/08 , H04J13/02 , H04W36/18 , H04W88/08
Abstract: A linear coverage area antenna system for use within a CDMA communication system is disclosed herein. In a preferred implementation, two linear coverage area antenna structures (210', 212') are positioned in parallel and coupled to a base station (200'). Within the base station (200'), a transmitter (220') generates remote user directed spread spectrum signals, these signals being provided to the first and second linear coverage area antenna structures (210', 212') through an antenna interface. The antenna interface includes a time delay element (292) for introducing a predetermined time delay between components of the remote user directed spread spectrum signals transmitted by the first and second linear coverage area antenna structures (210', 212'), respectively. The base station (220') also further includes at least a first demodulation element (510A) for demodulating an aggregate spread spectrum signal comprised of a plurality of system user directed spread spectrum signals received by the first linear coverage area antenna structure (210') and a second demodulation element (515A) for demodulating a second aggregate spread spectrum signal comprised of a plurality of system user directed spread spectrum signals received by the second linear coverage area antenna structure (212').
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公开(公告)号：DE69926049T2
公开(公告)日：2006-05-11
申请号：DE69926049
申请日：1999-09-15
Applicant: QUALCOMM INC
Inventor： SEGAL L , ANTONIO P , ELAM SUE , ERLENBACH JUDD , WOOTEN R
Abstract: Apparatus and method for determining when a vehicle has arrived or departed from a planned or an unplanned stop, while minimizing or completely eliminating driver intervention. The apparatus comprises a mobile communication terminal located onboard a vehicle for receiving destination information, generally using wireless means, from a central facility or hub. A speedometer also located onboard the vehicle determines the speed of the vehicle and a position sensor onboard the vehicle determines the vehicle position. The vehicle speed and position are provided to a processor, also located onboard the vehicle, which uses the speed and position information to determine a vehicle arrival or departure from a planned or unplanned stop. The processor generates an indication of the event, either arrival or departure, directly to the central facility, to the vehicle operator, or both.
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公开(公告)号：DE69926049D1
公开(公告)日：2005-08-11
申请号：DE69926049
申请日：1999-09-15
Applicant: QUALCOMM INC
Inventor： SEGAL L , ANTONIO P , ELAM SUE , ERLENBACH JUDD , WOOTEN R
Abstract: Apparatus and method for determining when a vehicle has arrived or departed from a planned or an unplanned stop, while minimizing or completely eliminating driver intervention. The apparatus comprises a mobile communication terminal located onboard a vehicle for receiving destination information, generally using wireless means, from a central facility or hub. A speedometer also located onboard the vehicle determines the speed of the vehicle and a position sensor onboard the vehicle determines the vehicle position. The vehicle speed and position are provided to a processor, also located onboard the vehicle, which uses the speed and position information to determine a vehicle arrival or departure from a planned or unplanned stop. The processor generates an indication of the event, either arrival or departure, directly to the central facility, to the vehicle operator, or both.
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公开(公告)号：DE69932175T2
公开(公告)日：2007-05-31
申请号：DE69932175
申请日：1999-10-26
Applicant: QUALCOMM INC
Inventor： ANTONIO P , HAMDY WALID
Abstract: A detector is used to sample of set of power measurements of a receive signal. The receive signal may comprise one or more signals from remote users as well as interference. A variance of the set of power measurements is also determined. The variance is compared to an overload threshold value. If the variance exceeds the overload threshold value, for some period of time, the system is declared to be operating at a potentially unstable point. In this state, future connection originations are denied.
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