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Digital AGC for a CDMA radiotelephone 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04B-007/005
  • H04B-001/69
출원번호 US-0312813 (1994-09-27)
발명자 / 주소
  • Ostman Kjell (Salo FIX)
출원인 / 주소
  • Nokia Mobile Phones Ltd. (Salo FIX 03)
인용정보 피인용 횟수 : 45  인용 특허 : 0

초록

Disclosed herein are methods and apparatus for generating digital receiver and transmitter AGC values for a spread spectrum transceiver. A method includes the steps of (a) integrating the power of a received and sampled signal; (b) calculating a logarithm of the received integrated power; (c) subtra

대표청구항

A spread spectrum transceiver, comprising: a transmitter for transmitting a spread spectrum RF signal through at least one transmitter amplifier; a receiver for receiving a spread spectrum RF signal and for amplifying the received signal with at least one receiver amplifier; a demodulator for demodu

이 특허를 인용한 특허 (45)

  1. Kilani,Mehdi Tavassoli; Shoval,Ayal, Adaptation algorithm based on signal statistics for automatic gain control.
  2. Komulainen, Petri; Heikkila, Markku, Adaptive channel equalizer.
  3. Chow,Brian, Automatic gain control.
  4. Kim Sung-Soo,KRX, Automatic gain control in direct sequence spread spectrum communication system.
  5. Gregoire, Jean-Philippe, Automatic gain control method.
  6. Wang, Haitao, Automatic gain control method and apparatus for wireless communication systems.
  7. Lomp, Gary R.; Ozluturk, Faith M.; Kowalski, John, Automatic power control system for a code division multiple access (CDMA) communications system.
  8. Lomp,Gary; Ozluturk,Fatih; Kowalski,John, Automatic power control system for a code division multiple access (CDMA) communications system.
  9. Ozluturk, Fatih M.; Jacques, Alexander M.; Lomp, Gary R.; Kowalski, John, Code division multiple access (CDMA) communication system.
  10. Lilja, Harri, Data transmission method and radio system.
  11. Jorma Lilleberg FI; Esko Nieminen FI, Delay estimation method and a receiver.
  12. Kenney Thomas J. ; Niva Ilkka ; Gray Steven D. ; Dowling Joe, Device and method for detection and reduction of intermodulation distortion.
  13. Maru, Tsuguo, Digital automatic gain control linearizer and digital automatic gain control circuit using the same.
  14. Ha Ji-Won,KRX, Digital automatic gain control method and device for use in communication terminal of mobile radio communication system.
  15. Ferdinandsen Svend,DKX, Diode detector.
  16. Beard,Paul, Dual processor framer.
  17. Chen, Shaohai, Echo-related decisions on automatic gain control of uplink speech signal in a communications device.
  18. Lomp, Gary R.; Ozluturk, Faith, Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system.
  19. Ali Farhan ; Gutierrez Alberto ; Chang Kim ; Huang Chenhong ; Manning Serge, Enhanced reverse link power control in a wireless communication system.
  20. Walley John S., Gain imbalance compensation for a quadrature receiver in a cordless direct sequence spread spectrum telephone.
  21. Holma, Harri; Toskala, Antti, Interfrequency measurement.
  22. Mahant Shetti,Shivaling S.; Kamran,Kiasaleh, Low complexity CDMA receiver.
  23. Ozluturk, Fatih; Lomp, Gary R.; Kowalski, John, Method and apparatus for adaptive power control for spread-spectrum communications.
  24. Gupta, Samir; Mauro, Anthony P.; Dejaco, Andrew P., Method and apparatus for automatically adjusting speaker and microphone gains within a mobile telephone.
  25. Edward G. Tiedemann, Jr. ; Keith W. Saints, Method and apparatus for forward link power control.
  26. Tiedemann, Jr., Edward G.; Saints, Keith W., Method and apparatus for forward link power control.
  27. Tiedemann, Jr., Edward G.; Saints, Keith W., Method and apparatus for forward link power control.
  28. Rinne, Mikko J.; Salonen, Janne, Method and apparatus for indicating variable data processing in telecommunication connections.
  29. Ozluturk, Fatih; Lomp, Gary, Method and subscriber unit for performing power control.
  30. Lussenhop Peter,DEX ; Vaisanen Risto,FIX, Method for extending the RSSI range and radio transceiver operating in accordance with this method.
  31. Lussenhop Peter,DEX ; Vaisanen Risto,FIX, Method for extending the RSSI range and radio transceiver operating in accordance with this method.
  32. Rimpela, Riku; Jarvinen, Petri; Oksala, Jarkko; Ruohonen, Jari, Method for indicating power consumption in a packet switched communication system.
  33. Deane Peter Michael,CAX ; Newson Paul,CAX, Method for limiting the dynamic range of a CDMA signal.
  34. Oguz Sunay ; Jussi Kahtava JP, Methods and apparatus for providing non-uniform de-multiplexing in a multi-carrier wide band CDMA system.
  35. Czaja Stash F. ; Jorri Sakari,FIX ; Niva Ilkka J.,FIX, Mobile assisted hard hand-off for a code division multiple access (CDMA) system.
  36. Mekkoth Ajith ; Yeoman Darin ; Gould Adam ; Dowling Joe, Prioritizing pilot set searching for a CDMA telecommunications system.
  37. Joseph Dowling, Priority channel search based on spectral analysis and signal recognition.
  38. Sydon Uwe,DEX, Receiver architecture for the receiving of angle-modulated/angle-keyed carrier signals.
  39. Wichman, Risto; Hottinen, Ari, Reception method and a receiver.
  40. Pekka Soininen FI; Mikko Rinne FI, Switching control method and apparatus for wireless telecommunications.
  41. Lomp, Gary; Ozluturk, Fatih; Silverberg, Avi, Transferring voice and non-voice data.
  42. Leinonen, Marko; Kaleva, Simo; Mattila, Heikki; Lilja, Harri, Transmitter.
  43. Komulainen, Petri; Heikkila, Markku J., Unsupervised adaptive chip separation filter for CDMA terminal.
  44. Zhang Jin-Yun,CAX, Variable step-size AGC.
  45. Vuorio, Juha; Lilja, Harri, Wireless communication transceiver having a dual mode of operation.
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