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Signal overlap detection in a communication system 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04L-009/00
출원번호 US-0646538 (1991-01-25)
발명자 / 주소
  • Malek Charles J. (Crystal Lake IL) McDonald James A. (Buffalo Grove IL)
출원인 / 주소
  • Motorola, Inc. (Schaumburg IL 02)
인용정보 피인용 횟수 : 47  인용 특허 : 0

초록

In frequency-hopping spread-spectrum systems, it is necessary to maintain frequency and bit synchronization (sync) between the transmitter and receiver in order to maintain quality data recovery at the receiver. Two transmissions in adjacent hop-time intervals may overlap because of various time del

대표청구항

A method of communication in a communication system with a base station and communication unit that communicate digital information messages to each other, comprising the steps of: transmitting a first message frame of a first digital information message, said first message frame having a format com

이 특허를 인용한 특허 (47)

  1. Tiedemann, Jr., Edward G.; Weaver, Jr., Lindsay A.; Padovani, Roberto, Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communication system.
  2. Tiedemann, Jr., Edward G.; Weaver, Jr., Lindsay A.; Padovani, Roberto, Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system.
  3. Tiedemann, Jr.,Edward G.; Weaver, Jr.,Lindsay A.; Padovani,Roberto, Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a CDMA cellular communications system.
  4. Wood, Jr.,Clifton W., Communication methods using slotted replies.
  5. Horvat, Dion; Koprivica, Milosh; Teghararian, Sarkis; Tischler, Ralph, Communications apparatus and method to avoid interference.
  6. Wood, Jr., Clifton W., Communications systems for radio frequency identification (RFID).
  7. Snodgrass Charles K. (Boise ID) Allen David H. (Rochester MN) Tuttle John R. (Boise ID) Rotzoll Robert R. (Boise ID) Pax George E. (Boise ID), Data communication method using identification protocol.
  8. Tuttle, Mark E., Electronic communication devices, methods of forming electrical communication devices, and communications methods.
  9. Ashdown Michael B. (High Wycombe GB2) Young Philip A. (Camberley GB3), Interface protocol method for use in a frequency hopping radio system having first hopping code for synchronization and.
  10. Wood, Jr., Clifton W., Method and apparatus for an arbitration scheme for radio frequency identification devices.
  11. Cashman, Russell P.; Schwartz, Richard A., Method and apparatus for concurrent monitoring of divergent wireless telecommunication systems.
  12. Teidemann, Jr.,Edward G.; Jou,Yu Cheun; Lin,Yu Chuan, Method and apparatus for high rate channel access control.
  13. Tiedemann, Jr., Edward G.; Jou, Yu Cheun; Lin, Yu Chuan G., Method and apparatus for high rate channel access control.
  14. Tiedemann, Jr., Edward G.; Jou, Yu-Cheun; Lin, Yu-Chuan, Method and apparatus for high rate channel access control.
  15. Tiedemann, Jr.,Edward G.; Jou,Yu Cheun; Lin,Yu Chuan, Method and apparatus for high rate channel access control.
  16. Weigand David L. ; Malek Charles John, Method and apparatus for providing a synchronous communication environment.
  17. Wood, Jr., Clifton W.; Hush, Don, Method and apparatus to manage RFID tags.
  18. Wood, Jr., Clifton W., Method and apparatus to select radio frequency identification devices in accordance with an arbitration scheme.
  19. Horvat, Dion; Koprivica, Milosh; Teghararian, Sarkis; Tischler, Ralph, Method for avoiding interference in a digital communication system.
  20. Horvat,Dion; Koprivica,Milosh; Teghararian,Sarkis; Tischler,Ralph, Method for avoiding interference in a digital communication system.
  21. Wood, Jr., Clifton W., Method of Addressing Messages and Communications System.
  22. Wood, Jr., Clifton W., Method of addressing messages and communications.
  23. Wood, Jr., Clifton W., Method of addressing messages and communications system.
  24. Wood, Jr., Clifton W., Method of addressing messages and communications system.
  25. Wood, Jr., Clifton W., Method of addressing messages and communications system.
  26. Wood, Jr.,Clifton W., Method of addressing messages and communications system.
  27. Wood, Jr., Clifton W., Method of addressing messages and communications systems.
  28. Wood, Jr., Clifton W., Method of addressing messages and communications systems.
  29. Wood, Jr., Clifton W.; Hush, Don, Method of addressing messages, method of establishing wireless communications and communications system.
  30. Wood, Jr., Clifton W.; Hush, Don, Method of addressing messages, method of establishing wireless communications, and communications system.
  31. Wood, Jr., Clifton W., Methods and apparatus for conducting financial transactions.
  32. Wood, Jr., Clifton W., Methods and apparatus for conducting financial transactions.
  33. Wood, Jr., Clifton W., Methods and apparatus for conducting financial transactions.
  34. Wood, Jr., Clifton W., Methods and apparatus for conducting financial transactions.
  35. Tuttle, John R, Methods and systems of receiving data payload of RFID tags.
  36. Cashman Russell P., Portable communications and data terminal operating to optimize receipt of both incoming CDPD and AMPS messages.
  37. Moore, Scott E., RFID material tracking method and apparatus.
  38. Moore, Scott E., RFID material tracking method and apparatus.
  39. Moore, Scott E., RFID material tracking method and apparatus.
  40. Moore, Scott E., RFID material tracking method and apparatus.
  41. Mizukami,Hiromitsu; Inoguchi,Makoto, Radio communication terminal and radio communication control method.
  42. Tuttle, John R., Radio frequency identification device and method.
  43. Tuttle, John R., Radio frequency identification device and method.
  44. Hundal, Sukhdeep S.; Koprivica, Milosh, System and method for asymmetric enhanced mode operation in a digital communication system.
  45. Tuttle, John R., System and method to track articles at a point of origin and at a point of destination using RFID.
  46. Tuttle, John R., Systems and methods for RFID tag arbitration where RFID tags generate multiple random numbers for different arbitration sessions.
  47. Tuttle, John R., Systems and methods for RFID tag arbitration where RFID tags generate multiple random numbers for different arbitration sessions.
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