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Method and apparatus for diversity enhancement using pseudo-multipath signals

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-007/10
  • H04B-001/69
출원번호 US-0532452 (1995-09-22)
발명자 / 주소
  • Ramasastry Jayaram
출원인 / 주소
  • QUALCOMM Incorporated
대리인 / 주소
    Miller
인용정보 피인용 횟수 : 154  인용 특허 : 11

초록

Method and apparatus for enhancing diversity in spread spectrum type communication systems by creating pseudo-multipath conditions or links for certain communication signals. The invention provides alternative or additional signal paths, for signals being transferred between gateways and communicati

대표청구항

[ What I claim as my invention is:] [1.] Apparatus for providing signal diversity in a spread spectrum communication system, comprising:at least one source for transmitting a CDMA communication signal;at least one diversity enhancer, each for generating at least one pseudo-multipath signal from said

이 특허에 인용된 특허 (11)

  1. Langseth Rollin E. (Colts Neck NJ) Yeh Yu S. (Freehold Township ; Monmouth County NJ), Cooperating arrangement for diversity stations.
  2. Masamura Tatsuro (Tokyo JPX), Frequency offset diversity receiving system.
  3. Mallinckrodt Albert J. (14141 Stratton Way Santa Ana CA 92705-3299), Integrated cellular communications system.
  4. Nishikawa Kunitoshi (Nagoya JPX) Fujimoto Mitoshi (Aichi JPX) Asano Yoshikazu (Owariasahi JPX), Land vehicle navigation system.
  5. Yokev Hanoch (Ramat-Gan ILX) Harel Haim (Herzelia ILX) Meiman Yehouda (Rishon Letzian ILX) Peleg Shimon (Hod Hasharon ILX), Multi-path resistant frequency-hopped spread spectrum mobile location system.
  6. Linquist Roger D. (Dallas TX) Lorang Malcolm M. (Dallas TX), Paging system with separate transmission paths for control and data.
  7. Ames Stephen A. (Sunnyvale CA), Repeater diversity spread spectrum communication system.
  8. Yamagishi Harumi (Tokyo JPX), Satellite communication system.
  9. Itoh Yasuhiko (Tokyo JPX) Mizuno Toshio (Sayama JPX) Kobayashi Hideo (Fujimi JPX) Ishikawa Hiroyasu (Warabi JPX), Satellite/land mobile communication system integration scheme.
  10. Yamamoto Kazuhiro (Tokyo JPX), Space diversity communications system for multi-direction time division multiplex communications.
  11. Ogawa Akira (Machida JPX) Watanabe Tatsuo (Mitaka JPX) Saito Hideki (Tanashi JPX), Space diversity system in TDMA communication system.

이 특허를 인용한 특허 (154)

  1. Zheng, Dunmin; Karabinis, Peter D., Adaptive beam forming with multi-user detection and interference reduction in satellite communication systems.
  2. Zheng, Dunmin; Karabinis, Peter D., Adaptive beam forming with multi-user detection and interference reduction in satellite communication systems and methods.
  3. Dutta, Santanu; Karabinis, Peter D., Adaptive spotbeam broadcasting, systems, methods and devices for high bandwidth content distribution over satellite.
  4. Karabinis, Peter D., Additional aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods.
  5. Karabinis, Peter D.; Dutta, Santanu; Churan, Gary G.; Zheng, Dunmin, Additional intra-and/or inter-system interference reducing systems and methods for satellite communications systems.
  6. Karabinis, Peter D., Aggregate radiated power control for multi-band/multi-mode satellite radiotelephone communications systems and methods.
  7. Cox, Earl C.; Swanson, Kyle D., Aircraft control method.
  8. Anderson, Jon James; Willis, Daniel James; Baker, Kenneth Robert, Airlink sensing watermarking repeater.
  9. Uhlik,Christopher R.; Dogan,Mithat C., Antenna array for point-to-point microwave radio system.
  10. Churan, Gary G., Antenna beam forming systems, methods and devices using phase adjusted least squares beam forming.
  11. Churan, Gary G., Antenna beam forming systems/methods using unconstrained phase response.
  12. Sheynblat, Leonid; Baker, Kenneth; Wheatley, Charles, Apparatus and method for determining the location of a repeater.
  13. Tseytlin, Michael; Dutta, Santanu, Apparatus and methods for mobility management in hybrid terrestrial-satellite mobile communications systems.
  14. Karabinis, Peter D., Apparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations.
  15. Karabinis, Peter D., Apparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations.
  16. Karabinis, Peter D., Apparatus and methods for power control in satellite communications systems with satellite-linked terrestrial stations.
  17. Stefan Scheinert, Arrangements of base transceiver stations of an area-covering network.
  18. Wickman Johan,SEX ; Bengtsson Roger,SEX, Broadband radio access method, device and system.
  19. Karabinis, Peter D., Broadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments.
  20. Karabinis, Peter D., Broadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments.
  21. Karabinis,Peter D., Broadband wireless communications systems and methods using multiple non-contiguous frequency bands/segments.
  22. Karabinis,Peter D., Co-channel wireless communication methods and systems using nonsymmetrical alphabets.
  23. Karabinis, Peter D., Co-channel wireless communication methods and systems using relayed wireless communications.
  24. Karabinis, Peter D., Co-channel wireless communication methods and systems using relayed wireless communications.
  25. Churan,Gary G., Code synchronization in CDMA satellite wireless communications system using uplink channel detection.
  26. Levin, Lon C.; Karabinis, Peter D., Communications systems and methods including emission detection.
  27. Karabinis, Peter D.; Zheng, Dunmin, Communications systems including adaptive antenna systems and methods for inter-system and intra-system interference reduction.
  28. Karabinis, Peter D.; Zheng, Dunmin, Communications systems including adaptive antenna systems and methods for inter-system and intra-system interference reduction.
  29. Karabinis, Peter D.; Singh, Rajendra; Olexa, George Ronald; Badipour, Bahman, Coordinated satellite-terrestrial frequency reuse.
  30. Karabinis, Peter D; Singh, Rajendra; Olexa, George Ronald; Badipour, Bahman, Coordinated satellite-terrestrial frequency reuse.
  31. Karabinis,Peter D.; Singh,Rajendra; Olexa,George R.; Badipour,Bahman, Coordinated satellite-terrestrial frequency reuse.
  32. Raffel, Michael A.; Bamburak, Michael D.; Glass, David R.; Jarett, Keith; Kibria, Masud; Lawrence, Christopher G.; Lee, Tony S.; Leuca, Ileana A.; Marx, Joseph P.; Nelson, Roderick; O'Neill, Paul B.;, Cordless cellular system.
  33. Raffel,Michael A.; Bamburak,Michael D.; Glass,David R.; Jarett,Keith; Kibria,Masud; Lawr nc,Christopher G.; Lee,Tony S.; Leuca,Ileana A.; Marx,Joseph P.; Nelson,Roderick; O'Neill,Paul B.; Williams,Ro, Cordless cellular system.
  34. Otten,David D.; Duckworth,David G., Data communications systems and methods using different wireless links for inbound and outbound data.
  35. Dutta, Santanu, Electronic antenna beam steering using ancillary receivers and related methods.
  36. Levin,Lon C.; Karabinis,Peter D., Extraterrestrial communications systems and methods including ancillary extraterrestrial components.
  37. Karabinis, Peter D., Filters for combined radiotelephone/GPS terminals.
  38. Karabinis, Peter D., Filters for combined radiotelephone/GPS terminals.
  39. Pope,John, Forward link time delay for distributed antenna system.
  40. Dutta, Santanu, Frequency division duplex (FDD) return link transmit diversity systems, methods and devices using forward link side information.
  41. Karabinis, Peter D.; Dutta, Santanu, Frequency-dependent filtering for wireless communications transmitters.
  42. Dowdle, John R.; Gustafson, Donald E.; Elwell, Jr., John M., Geographical navigation using multipath wireless navigation signals.
  43. Karabinis, Peter D.; Singh, Rajendra, Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis.
  44. Karabinis, Peter D.; Singh, Rajendra, Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis.
  45. Karabinis, Peter D.; Singh, Rajendra, Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis.
  46. Karabinis, Peter D.; Singh, Rajendra, Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis.
  47. Karabinis,Peter D.; Dutta,Santanu; Churan,Gary G.; Zheng,Dunmin, Intra-and/or inter-system interference reducing systems and methods for satellite communications systems.
  48. Karabinis, Peter D., Intra-system and/or inter-system reuse of feeder link frequencies including interference suppression systems and methods.
  49. Zheng, Dunmin, Iterative antenna beam forming systems/methods.
  50. Doyle,Scott Bermingham; Alexanian,Angelos; Wright,Charled Russell, LMDS system with equal power to subscriber locations.
  51. Karabinis, Peter D., Location-based broadcast messaging for radioterminal users.
  52. Karabinis, Peter D., Location-based broadcast messaging for radioterminal users.
  53. Tingley, Robert D., Low-cost, low-power geolocation system.
  54. Campanella, S. Joseph, Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system.
  55. Kilfoyle, Daniel B.; Slocumb, III, Travis H.; Carson, Steven, Method and system for a channel selective repeater with capacity enhancement in a spread-spectrum wireless network.
  56. Kilfoyle,Daniel B.; Slocumb, III,Travis H.; Carson,Steven, Method and system for a channel selective repeater with capacity enhancement in a spread-spectrum wireless network.
  57. Kilfoyle, Daniel B.; Slocumb, III, Travis H.; Carson, Steven, Method and system for a remote downlink transmitter for increasing the capacity and downlink capability of a multiple access interference limited spread-spectrum wireless network.
  58. Kilfoyle,Daniel B.; Slocumb, III,Travis H.; Carson,Steven, Method and system for a remote downlink transmitter for increasing the capacity and downlink capability of a multiple access interference limited spread-spectrum wireless network.
  59. Kilfoyle,Daniel B., Method and system for a remote downlink transmitter for increasing the capacity of a multiple access interference limited spread-spectrum wireless network.
  60. Lempiainen, Jukka, Method for optimising coverage by reshaping antenna pattern.
  61. Raffel, Michael A.; Bamburak, Michael D.; Glass, David R.; Jarett, Keith; Kibria, Masud; Lawrence, Christopher G.; Lee, Tony S.; Leuca, Ileana A.; Marx, Joseph P.; Nelson, Roderick; O'Neill, Paul B.;, Method of providing cellular and landline cordless service using a dual mode mobile telephone.
  62. Karabinis, Peter D., Methods and systems for configuring satellite antenna cell patterns in response to terrestrial use of satellite frequencies.
  63. Karabinis,Peter D., Methods and systems for configuring satellite antenna cell patterns in response to terrestrial use of satellite frequencies.
  64. Benjamin, Ted; Griffin, Matthew; Chapman, William W., Methods and systems for satellite communications employing ground-based beam forming with spatially distributed hybrid matrix amplifiers.
  65. Karabinis, Peter D., Methods and systems providing adaptive feeder links for ground based beam forming and related systems and satellites.
  66. Dutta, Santanu, Methods of ground based beamforming and on-board frequency translation and related systems.
  67. Stefan Scheinert, Methods of operating arrangements of base transceiver stations in an area-covering network.
  68. Karabinis, Peter D., Methods of reducing interference including applying weights to provide correction signals and related systems.
  69. Karabinis, Peter D., Methods of reducing interference including calculation of weights based on errors and related systems.
  70. Karabinis, Peter D., Methods of reducing interference including determination of feeder link signal error and related systems.
  71. Karabinis, Peter D., Methods, radioterminals, and ancillary terrestrial components for communicating using spectrum allocated to another satellite operator.
  72. Karabinis, Peter D., Modification of transmission values to compensate for interference in a satellite down-link communications.
  73. Karabinis,Peter D., Multi-band/multi-mode satellite radiotelephone communications systems and methods.
  74. Kilfoyle, Daniel B.; Slocumb, Travis H.; Potter, Michael; Carson, Steve, Multistage reception of code division multiple access transmissions.
  75. Churan,Gary G., Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates.
  76. Churan,Gary G., Network-assisted global positioning systems, methods and terminals including doppler shift and code phase estimates.
  77. Karabinis, Peter D., Prediction of uplink interference potential generated by an ancillary terrestrial network and/or radioterminals.
  78. Karabinis, Peter D., Providing different transmit and/or receive modes in different sectors of a wireless base station.
  79. Damnjanovic, Aleksandar; Mallik, Siddhartha; Montojo, Juan; Zhang, Xiaoxia; Yoo, Taesang, Radio shared spectrum access procedures.
  80. Karabinis, Peter D., Radiotelephones and operating methods that use a single radio frequency chain and a single baseband processor for space-based and terrestrial communications.
  81. Levin,Lon C.; Karabinis,Peter D., Radioterminals and associated operating methods that alternate transmission of wireless communications and processing of global positioning system signals.
  82. Levin, Lon C.; Karabinis, Peter D., Radioterminals and associated operating methods that transmit position information responsive to change/rate of change of position.
  83. Levin, Lon C.; Karabinis, Peter D., Radioterminals and associated operating methods that transmit position information responsive to rate of change of position.
  84. Karabinis, Peter D., Radioterminals and operating methods that receive multiple measures of information from multiple sources.
  85. Karabinis, Peter D., Radioterminals including satellite interlocks and related methods.
  86. Karabinis, Peter D., Radioterminals including satellite/hands-free interlocks and related methods.
  87. Evans, Richard O.; Karabinis, Peter D., Reducing interference in a wireless communications signal in the frequency domain.
  88. Baker, Kenneth; Wheatley, Charles; Willis, Daniel; Sheynblat, Leonid, Repeater that reports detected neighbors.
  89. Baker, Kenneth R.; Wheatley, III, Charles E.; Willis, Daniel J.; Sheynblat, Leonid, Repeater with positioning capabilities.
  90. Jacks, Eric Claudis, Retaining traffic channel assignments for satellite terminals to provide lower latency communication services.
  91. Good, Alexander H.; King, Charlene J.; Swank, Eric A.; Kundra, Monish; Karabinis, Peter D., Reusing frequencies of a fixed and/or mobile communications system.
  92. Good, Alexander H.; King, Charlene J.; Swank, Eric A.; Kundra, Monish; Karabinis, Peter D., Reusing frequencies of a fixed and/or mobile communications system.
  93. Dean, Richard F., Reverse link power-controlled repeater.
  94. Majidi Ahy,Reza, Robust topology wireless communication using broadband access points.
  95. Karabinis,Peter D.; Bogatin,Boris; Deobald,Brian M.; Dutta,Santanu, Satellite assisted push-to-send radioterminal systems and methods.
  96. Karabinis, Peter D.; Bogatin, Boris; Deobald, Brian M.; Dutta, Santanu, Satellite assisted radioterminal communications systems and methods.
  97. Karabinis, Peter D., Satellite communications apparatus and methods using asymmetrical forward and return link frequency reuse.
  98. Karabinis, Peter D., Satellite communications systems and methods using diverse polarizations.
  99. Karabinis, Peter D.; Dutta, Santanu; Churan, Gary G., Satellite communications systems and methods using radiotelephone.
  100. Karabinis, Peter D.; Dutta, Santanu; Churan, Gary G., Satellite communications systems and methods using radiotelephone location-based beamforming.
  101. Karabinis, Peter D., Satellite communications systems and methods using substantially co-located feeder link antennas.
  102. Karabinis, Peter D., Satellite communications systems and methods with distributed and/or centralized architecture including ground-based beam forming.
  103. Karabinis, Peter D., Satellite communications systems, components and methods for operating shared satellite gateways.
  104. Karabinis,Peter D., Satellite radiotelephone systems providing staggered sectorization for terrestrial reuse of satellite frequencies and related methods and radiotelephone systems.
  105. Karabinis, Peter D., Satellite radiotelephone systems, methods, components and devices including gated radiotelephone transmissions to ancillary terrestrial components.
  106. Karabinis, Peter D., Satellite with different size service link antennas and radioterminal communication methods using same.
  107. Karabinis, Peter D.; Dutta, Santanu, Satellite-band spectrum utilization for reduced or minimum interference.
  108. Karabinis, Peter D.; Dutta, Santanu, Satellite-band spectrum utilization for reduced or minimum interference.
  109. Karabinis, Peter D., Satellite/hands-free interlock systems and/or companion devices for radioterminals and related methods.
  110. Karabinis, Peter D., Satellite/terrestrial wireless communications systems and methods using disparate channel separation codes.
  111. Karabinis, Peter D., Satellite/terrestrial wireless communications systems and methods using disparate channel separation codes.
  112. Karabinis,Peter D.; Agnew,Carson E., Space-based network architectures for satellite radiotelephone systems.
  113. Karabinis, Peter D., Spatial guardbands for terrestrial reuse of satellite frequencies.
  114. Karabinis, Peter D., Staggered sectorization for terrestrial reuse of satellite frequencies.
  115. Karabinis, Peter D., Systems and method with different utilization of satellite frequency bands by a space-based network and an ancillary terrestrial network.
  116. Zheng, Dunmin, Systems and methods for adaptive interference cancellation beamforming.
  117. Karabinis, Peter D., Systems and methods for controlling a cellular communications system responsive to a power level associated with a wireless transmitter.
  118. Karabinis, Peter D., Systems and methods for controlling a level of interference to a wireless receiver responsive to a power level associated with a wireless transmitter.
  119. Karabinis, Peter D., Systems and methods for controlling a level of interference to a wireless receiver responsive to an activity factor associated with a wireless transmitter.
  120. Karabinis, Peter D., Systems and methods for controlling base station sectors to reduce potential interference with low elevation satellites.
  121. Zheng, Dunmin, Systems and methods for forward link closed loop beamforming.
  122. Dutta,Santanu; Karabinis,Peter D., Systems and methods for handover between space based and terrestrial radioterminal communications.
  123. Karabinis, Peter D., Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint.
  124. Karabinis, Peter D., Systems and methods for inter-system sharing of satellite communications frequencies within a common footprint.
  125. Dutta, Santanu, Systems and methods for mobility management in overlaid mobile communications systems.
  126. Dutta, Santanu, Systems and methods for mobility management in overlaid mobile communications systems.
  127. Karabinis, Peter D., Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference.
  128. Karabinis, Peter D., Systems and methods for modifying antenna radiation patterns of peripheral base stations of a terrestrial network to allow reduced interference.
  129. Karabinis, Peter D., Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference.
  130. Karabinis, Peter D., Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference.
  131. Karabinis,Peter D., Systems and methods for monitoring selected terrestrially used satellite frequency signals to reduce potential interference.
  132. Ansari, Arif; Bories, Jean-Michel; Cohen, Michel; Corbel, Erwan, Systems and methods for orthogonal frequency division multiple access (OFDMA) communications over satellite links.
  133. Karabinis, Peter D., Systems and methods for packing/unpacking satellite service links to/from satellite feeder links.
  134. Elwell, Jr., John M.; Gustafson, Donald E.; Dowdle, John R., Systems and methods for positioning using multipath signals.
  135. Karabinis, Peter D., Systems and methods for reducing power robbing impact of interference to a satellite.
  136. Karabinis, Peter D., Systems and methods for reducing satellite feeder link bandwidth/carriers in cellular satellite systems.
  137. Zheng, Dunmin, Systems and methods for satellite forward link transmit diversity using orthagonal space coding.
  138. Karabinis, Peter D.; Churan, Gary G., Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex and/or frequency-division duplex mode.
  139. Karabinis, Peter D.; Churan, Gary G., Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex and/or frequency-division duplex mode.
  140. Karabinis, Peter D., Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode.
  141. Karabinis, Peter D., Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode.
  142. Karabinis, Peter D., Systems and methods for terrestrial reuse of cellular satellite frequency spectrum in a time-division duplex mode.
  143. Karabinis, Peter D., Systems and methods for terrestrial reuse of cellular satellite frequency spectrum using different channel separation technologies in forward and reverse links.
  144. Karabinis, Peter D., Systems and methods for terrestrial use of cellular satellite frequency spectrum.
  145. Karabinis, Peter D.; Singh, Rajendra, Systems and methods for transmitting electromagnetic energy over a wireless channel having sufficiently weak measured signal strength.
  146. Elwell, Jr., John M.; Gustafson, Donald E., Systems and methods for transparency mapping using multipath signals.
  147. Elwell, Jr., John M.; Gustafson, Donald E.; Soltz, J. Arnold, Systems and methods for transparency mapping using multipath signals.
  148. Cummiskey, J. Terence; Karabinis, Peter D., Systems and methods of waveform and/or information splitting for wireless transmission of information to one or more radioterminals over a plurality of transmission paths and/or system elements.
  149. Karabinis, Peter D., Systems and methods with different utilization of satellite frequency bands by a space-based network and an ancillary terrestrial network.
  150. Tronc, Jérome; Calamarte, Christian; Mouly, Michel; Dutta, Santanu, Systems, methods and computer program products for mobility management in hybrid satellite/terrestrial wireless communications systems.
  151. Dutta, Santanu; Churan, Gary G.; Zheng, Dunmin; Nguyen, Serge, Systems, methods and devices for overlaid operations of satellite and terrestrial wireless communications systems.
  152. Karabinis, Peter D., Systems, methods and devices for reusing spectrum of another operator.
  153. Nguyen, Serge; Dutta, Santanu, Systems, methods and network components that provide different satellite spot beam return carrier groupings and reuse patterns.
  154. Jeffery Scott Chuprun ; Chad S. Bergstrom ; Byron Tarver ; Bennett C. Beaudry, Wireless access unit utilizing adaptive spectrum exploitation.
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