-
公开(公告)号：JP2002186018A
公开(公告)日：2002-06-28
申请号：JP2001312606
申请日：2001-10-10
Applicant: QUALCOMM INC
Inventor： STRICH W ELI , THOMPSON JAMES H
Abstract: PROBLEM TO BE SOLVED: To provide a spread spectrum cell communication system and method that can change a degree of concentration of communication channels in response to a change in the distribution of users in the system and adjust the size of a specific user sector corresponding to a communication channel request in the sector. SOLUTION: This invention provides a method of a wireless communication system having antennas which are respectively directed to one of coverage areas in one viewpoint. This method includes steps where a 1st modulation signal is sent through a 1st antenna among the antennas, the 1st modulation information signal is fed to a phase delay element, where the phase of the 1st modulation information signal is delayed to obtain the 1st modulation information signal whose phase is delayed, and the 1st modulation information signal whose phase is delayed is transmitted through a 2nd antenna among the antennas.
-
公开(公告)号：HK1039539A1
公开(公告)日：2002-04-26
申请号：HK02101280
申请日：2002-02-21
Applicant: QUALCOMM INC
Inventor： MOLLENKOPF STEVEN , THOMPSON JAMES H
Abstract: The present invention relates to a method and a system of controlling the gain input into an antenna of a gateway. Based on the obtained antenna elevation a path gain is calculated. Together with the obtained transponder gain and the obtained antenna dish gain the path gain is used to calculate a common gateway gain. This common gateway gain is used to adjust the gain a variable gain amplifier.
-
公开(公告)号：ZA984043B
公开(公告)日：1998-11-20
申请号：ZA984043
申请日：1998-05-13
Applicant: QUALCOMM INC
Inventor： GRANATA GARY , THOMPSON JAMES H
Abstract: A method for antenna selection in a satellite communications system having a satellite transmitting a signal and a user terminal having a plurality of antennas, wherein each of the plurality of antennas can be selectively coupled to one of a plurality of signal paths, wherein a first one of the signal paths initially receives the signal on a first one of the plurality of antennas and initially applies a predetermined minimum level of attenuation to the signal, the method, comprising the steps of: applying a predetermined maximum level of attenuation on a second one of the signal paths; coupling a second one of the plurality of antennas to said second signal path; decreasing the level of attenuation applied on said second signal path until the noise power level on said second signal path is equivalent to the noise power level on the first signal path; and when the quality of the signal received from the satellite by said second one of the plurality of antennas exceeds the quality of the signal received from the satellite by the first one of the plurality of antennas, applying said predetermined maximum level of attenuation on the first signal path and applying the predetermined minimum level of attenuation on said second signal path.
-
公开(公告)号：AU682939B2
公开(公告)日：1997-10-23
申请号：AU1876295
申请日：1995-02-14
Applicant: QUALCOMM INC
Inventor： STRICH W ELI , THOMPSON JAMES H
-
公开(公告)号：CA2222925A1
公开(公告)日：1997-10-09
申请号：CA2222925
申请日：1997-04-01
Applicant: QUALCOMM INC
Inventor： THOMPSON JAMES H , GILMORE ROBERT P
Abstract: A system and method for controlling the strength of a shared resource signal transmitted by the satellite transponder (104) in a satellite communications system. The satellite communications system includes a gateway (102) for transmitting communications signals including a shared resource signal (402), a satellite transponder (104) for relaying (404) the signals to at least one subscriber unit (106A, B, C) (for example, a phone), and at least one subscriber unit (106) for receiving the signals (406). The method includes the steps of receiving the shared resource signal (406), at each subscriber unit (106), via the satellite transponder (104); measuring (408), at each subscriber unit (106), a signal strength for the received shared resource signal; sending the signal strengths to the gateway (410, 102); and adjusting the power of the shared resource signal transmitted by the satellite transponder (418) based on the signal strengths.
-
Patent Agency Ranking
公开(公告)号：BR9506683A
公开(公告)日：1997-09-16
申请号：BR9506683
申请日：1995-02-14
Applicant: QUALCOMM INC
Inventor： STRICH W ELI , THOMPSON JAMES H
-
公开(公告)号：HK1010955A1
公开(公告)日：1999-07-02
申请号：HK98110019
申请日：1998-08-19
Applicant: QUALCOMM INC
Inventor： GILMORE ROBERT P , THOMPSON JAMES H
Abstract: A system and method for controlling the strength of a shared resource signal transmitted by the satellite transponder in a satellite communications system. The satellite communications system includes a gateway for transmitting communications signals including a shared resource signal, a satellite transponder for relaying the signals to at least one subscriber unit (for example, a phone), and at least one subscriber unit for receiving the signals. The method includes the steps of receiving the shared resource signal, at each subscriber unit, via the satellite transponder; measuring, at each subscriber unit, a signal strength for the received shared resource signal; sending the signal strengths to the gateway; and adjusting the power of the shared resource signal transmitted by the satellite transponder based on the signal strengths.
-
公开(公告)号：AU1185299A
公开(公告)日：1999-04-23
申请号：AU1185299
申请日：1998-09-25
Applicant: QUALCOMM INC
Inventor： THOMPSON JAMES H , PANTON WILLIAM R , TASSOUDJI MOHAMMAD ALI
Abstract: Apparatus and method for using multiple receive antennas (420A, 420B) in a satellite communication system (100) receiver (500, 700, 900) to mitigate the effects of specular reflection (202B, 402B) of a received signal (202A, 402A). The system includes first and second antennas (420A, 420B), for receiving a satellite communication signal along first and second direct (202A, 402A) and specular propagation paths (202B, 402B), respectively, and a digital maximal ration combiner (520) for combining the signals (202A, 202B, 402A, 402B, 420A, 420B) so as to maximize the signal-to-noise of the resultant combined signal.
-
公开(公告)号：CA2303540A1
公开(公告)日：1999-04-08
申请号：CA2303540
申请日：1998-09-25
Applicant: QUALCOMM INC
Inventor： TASSOUDJI MOHAMMAD ALI , THOMPSON JAMES H , PANTON WILLIAM R
Abstract: Apparatus and method for using multiple receive antennas (420A, 420B) in a satellite communication system (100) receiver (500, 700, 900) to mitigate the effects of specular reflection (202B, 402B) of a received signal (202A, 402A). The system includes first and second antennas (420A, 420B), for receiving a satellite communication signal along first and second direct (202A, 402A) and specular propagation paths (202B, 402B), respectively, and a digital maximal ration combiner (520) for combining the signals (202A, 202B, 402A, 402B, 420A, 420B) so as to maximize the signal-to-noise of the resultant combined signal.
-
公开(公告)号：AU7368396A
公开(公告)日：1997-04-09
申请号：AU7368396
申请日：1996-09-23
Applicant: QUALCOMM INC
Inventor： TASSOUDJI MOHAMMAD ALI , THOMPSON JAMES H , STANDKE RANDOLPH E
Abstract: A dual-band octafilar helix antenna operational at two frequencies, while maintaining a relatively small package size. The dual-band octafilar antenna is manufactured by disposing radiators and a feed network onto a flexible substrate and forming the substrate into a cylindrical shape to obtain the helical configuration. The dual-band octafilar helix antenna includes four active radiators which are matched to a first frequency and disposed on a radiator portion of the flexible substrate. Four additional radiators, which may be either passive or active radiators, are matched to a second frequency, are also disposed on the radiator portion of the substrate and interleaved with the active radiators. At least one feed network is provided on a feed portion of the substrate that provides 0 DEG , 90 DEG , 180 DEG , and 270 DEG signals to active radiators. The sets of radiators and associated feed networks may be formed on opposing sides of a single substrate or on spaced apart layers in a multi-layered support substrate design.
-
-
-
-
-
-
-
-
-
Search Results
55
records
(took 0.021 seconds)
