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Channel estimation in a CDMA wireless communication system 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04Q-007/28
  • H04Q-007/00
출원번호 US-0289073 (1999-04-08)
발명자 / 주소
  • Gilbert Leung
출원인 / 주소
  • Qualcomm Incorporated
대리인 / 주소
    Philip R. Wadsworth
인용정보 피인용 횟수 : 46  인용 특허 : 20

초록 ▼

A method and apparatus for estimating channel conditions in a code-division multiple access (CDMA) communication system having a pilot signal and a traffic signal. The apparatus includes a pilot filter for generating channel estimates from the pilot signal and a circuit for reconstructing the traffi

대표청구항 ▼

1. A method for estimating channel conditions in a code-division multiple access (CDMA) communication system having a pilot signal and a traffic signal, the method comprising the steps of:generating pilot signal channel estimates from said pilot signal; reconstructing said traffic signal; generating

이 특허에 인용된 특허 (20)

  1. Nossen Edward J. (Cherry Hill NJ), Adaptive multipath distortion equalizer.
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  2. Rilling Kenneth (1190 Crestline Dr. Cupertino CA 95014), Anti-multipath signal processor.
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  3. Lomp Gary ; Ozluturk Fatih ; Silverberg Avi, Code sequence generator in a CDMA modem.
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  4. Schramm Peter,DEX ; Huber Johannes,DEX, Coherent demodulation with decision-directed channel estimation for digital communication.
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  5. Visotsky Yevgeny ; Frank Colin D. ; Madhow Upamanyu ; Singh Rahul, Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system.
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  6. Frost ; Edward G., Comprehensive automatic mobile radio telephone system.
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  7. Teder Paul M. (Taby SEX) Ewerbring Lars-Magnus (Stockholm SEX) Brismark Lars G. (Stockholm SEX), Direct sequence CDMA coherent uplink detector.
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  8. Gilhousen Klein S. (San Diego CA) Padovani Roberto (San Diego CA) Wheatly ; III Charles E. (Del Mar CA), Diversity receiver in a CDMA cellular telephone system.
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  9. Nossen Edward J. (Camden County ; Cherry Hill Township NJ), Dual transmit-receive space diversity communication system.
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  10. Schiff Leonard N. (Mercer County NJ), Fast acquisition burst mode spread spectrum communications system with pilot carrier.
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  11. Schmidt Werner (Roscommon IEX), Method and apparatus for handing-over a radio connection from one radio cell to another radio cell of a digital radio tr.
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  12. Katsuragawa Hiroshi,JPX ; Ono Shigeru,JPX, Method and device for signal decision, receiver and channel condition estimating method for a coding communication syst.
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  13. Mui Shou Y. (Cherry Hill NJ), Modem for use in multipath communication systems.
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  14. Caples Edgar L. (Garland TX) Marston Robert K. (Plano TX) Massad Khalil E. (Richardson TX), Multipath diversity spread spectrum receiver.
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  15. Rilling Kenneth (1190 Crestline Dr. Cupertino CA 95014), Multipath reduction system.
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  16. Rilling Kenneth (1190 Crestline Dr. Cupertino CA 95014), Multipath reduction system.
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  17. Jones William W. ; Kenney Thomas J., Pilot aided traffic channel estimation for CDMA cellular systems.
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  18. Cooper George R. (West Lafayette IN) Nettleton Raymond W. (West Lafayette IN), Spread spectrum apparatus for cellular mobile communication systems.
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  19. Kavehrad Mohsen (Holmdel NJ) McLane Peter J. (Kingston CAX), Spread spectrum wireless PBX.
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  20. Kowalski John M. ; Kandala Srinivas ; Somayazulu V. Srinivasa, System and method for CDMA channel estimation.
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  1. Bolinth, Edgar; Kern, Ralf, Adaptive modulation and other extensions of the physical layer in multiple access systems.
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  2. Subrahmanya, Parvathanathan; Shiu, Da shan; Agrawal, Avneesh, Adaptive pilot filter for a wireless communication system.
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  3. Subrahmanya,Parvathanathan; Shiu,Da shan; Agrawal,Avneesh, Adaptive pilot filter for a wireless communication system.
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  4. Park,Jung Keun; Park,Joong Hoo, Apparatus and method for performing channel estimations using non-linear filter.
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  5. Bilgic, Attila; Denk, Robert; Neuhaus, Holger; Speth, Michael, Apparatus and method for preprocessing of pilot symbols for channel estimation by means of adaptive low-pass filtering.
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  6. Engstr?m, Bo, Bit error estimates from pilot signals.
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  7. Maruta, Yasushi; Oura, Satoshi; Muraoka, Shinya, CDMA receiving apparatus and method.
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  8. Alcouffe, Nicole, COFDM demodulator.
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  9. Bottomley,Greg; Wang,Yi Pin Eric; Sourour,Essam; Guey,Jian Ching, Communications methods, apparatus and computer program products using gain multipliers.
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  10. Wang,Yingmin, Correction method for time-varying channel in a time-slot division mobile communication system.
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  11. Jalloul,Louay; Misra,Raj, Data-aided channel estimation.
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  12. Ito, Akira, Device for channel estimation in a multiple subcarrier CDMA system using a block of multiple subcarriers by multiple symbols and method thereof.
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  13. Nanda, Sanjiv; Walton, Jay Rodney, Distributed hierarchical scheduling in an AD hoc network.
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  14. Nanda, Sanjiv; Walton, J. Rodney, Distributed hierarchical scheduling in an ad hoc network.
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  15. Nanda, Sanjiv; Meylan, Arnaud; Walton, Jay Rodney, High speed media access control.
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  16. Nanda, Sanjiv; Meylan, Arnaud; Walton, Jay Rodney, High speed media access control.
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  17. Walton, Jay Rodney; Nanda, Sanjiv, High speed media access control and direct link protocol.
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  18. Walton, Jay Rodney; Nanda, Sanjiv, High speed media access control and direct link protocol.
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  19. Walton, Jay Rodney; Ketchum, John W.; Nanda, Sanjiv, High speed media access control with legacy system interoperability.
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  20. Nanda, Sanjiv; Walton, Jay Rodney, Method and apparatus for an ad-hoc wireless communications system.
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  21. Gerakoulis, Diakoumis Parissis, Method and apparatus for code division switching.
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  22. Gerakoulis, Diakoumis Parissis, Method and apparatus for code division switching.
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  23. Gerakoulis, Diakoumis Parissis, Method and apparatus for code division switching.
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  24. Fulghum, Tracy L., Method and apparatus for received communication signal processing.
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  25. Meylan, Arnaud; Abraham, Santosh, Method and apparatus for scheduling in a wireless network.
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  26. Ketchum, John W.; Walton, Jay Rodney; Nanda, Sanjiv, Method and apparatus for wireless LAN (WLAN) data multiplexing.
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  27. Patel, Achal R., Method and system for dynamic soft handoff resource allocation in a wireless network.
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  28. Patel,Achal R., Method and system for dynamic soft handoff resource allocation in a wireless network.
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  29. Hans,Martin; Kowalewski,Frank; Laumen,Josef; Schmidt,Gunnar; Baer,Siegfried; Beckmann,Mark, Method and system for transmitting data, with transmission antenna diversity.
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  30. Wala, Philip M.; Zavadsky, Dean, Method of inserting CDMA beacon pilots in output of distributed remote antenna nodes.
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  31. Ketchum, John W.; Wallace, Mark S.; Walton, Jay Rodney; Nanda, Sanjiv, Method, apparatus, and system for medium access control.
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  32. Ketchum, John W.; Wallace, Mark S.; Walton, Jay Rodney; Nanda, Sanjiv, Method, apparatus, and system for medium access control.
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  33. Ketchum, John W.; Walton, Jay Rodney; Nanda, Sanjiv, Method, apparatus, and system for multiplexing protocol data units.
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  34. Ketchum, John Wendell; Walton, Jay Rodney; Nanda, Sanjiv, Method, apparatus, and system for multiplexing protocol data units.
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  35. Manakkal, Rajesh Raja; Alex, Sam P.; Jalloul, Louay, Methods and systems for channel estimation in a collaborative multi input multiple output (MIMO) communication system.
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  36. Black, Peter John; Grob, Matthew Stuart, Methods and systems for providing enhanced position location in wireless communications.
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  37. Ohwatari, Yusuke; Benjebbour, Anass; Okumura, Yukihiko, Radio communication system, radio base station apparatus and communication control method.
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  38. Meylan, Arnaud; Nanda, Sanjiv, Scheduling with reverse direction grant in wireless communication systems.
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  39. Meylan, Arnaud; Nanda, Sanjiv, Scheduling with reverse direction grant in wireless communication systems.
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  40. Terry, John David, System and method for radio frequency carrier aggregation.
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  41. Abraham, Santosh; Meylan, Arnaud; Walton, Jay Rodney, Transmission mode and rate selection for a wireless communication system.
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  42. Abraham, Santosh; Meylan, Arnaud; Walton, Jay Rodney, Transmission mode and rate selection for a wireless communication system.
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  43. Ketchum, John W.; Walton, Jay Rodney; Nanda, Sanjiv, Wireless LAN protocol stack.
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  44. Smolyar, Lev; Bergel, Itzhak, Wireless communication device and method for communicating in site selection diversity mode.
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  45. Smolyar, Lev; Bergel, Itzhak, Wireless communication device and method for communicating in site selection diversity mode.
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  46. Smolyar,Lev; Bergel,Itzhak, Wireless communication device and method for communicating in site selection diversity mode.
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