A spread spectrum remote unit produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is combined as a combined signal. The combined sig
A spread spectrum remote unit produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is combined as a combined signal. The combined signal is transmitted as the combined spread spectrum signal.
대표청구항▼
1. A spread spectrum remote unit comprising:means for receiving a combined spread spectrum signal, the spread spectrum signal including a reference signal and a plurality of message signals, the message signals having message data; means, including a plurality of detector means and synchronization m
1. A spread spectrum remote unit comprising:means for receiving a combined spread spectrum signal, the spread spectrum signal including a reference signal and a plurality of message signals, the message signals having message data; means, including a plurality of detector means and synchronization means, for detecting the reference signal within the received combined spread spectrum signal; means for generating a remote reference signal at the remote unit; means to synchronize the remote reference signal with the detected refrence signal; and means for recovering the message data of at least one of the message signals using information from the detected reference signal, said means demodulating each of a plurality of message data signals. 2. The remote unit of claim 1 further comprising:means for recovering a carrier signal from the spread spectrum signal using the reference signal; and wherein the message data recovering means uses the recovered carrier signal to recover the message data. 3. The remote unit of claim 1 wherein the spread spectrum signal is in a code division multiple access format.4. The remote unit of claim 1, wherein:the means for generating a remote reference signal at the remote unit relays the detected reference signal, the remote reference signal transmitted from the remote unit; the remote unit spread-spectrum processes the remote message data with the remote reference signal, and combines the spread-spectrum-processed remote message data with the remote-reference signal as a remote-CDMA signal; and the remote unit transmits the remote-CDMA signal over a communications channel to a base station. 5. The remote unit of claim 1, wherein:the means for generating a remote reference signal at the remote unit uses the detected reference signal to set the timing for a different remote reference signal, the remote reference signal transmitted from the remote unit; the remote unit spread-spectrum processes the remote message data with the remote reference signal, and combines the spread-spectrum-processed remote message data with the remote-reference signal as a remote-CDMA signal; and the remote unit transmits the remote-CDMA signal over a communications channel to a base station. 6. A spread spectrum remote unit comprising:means for receiving a combined spread spectrum signal, the spread spectrum signal including a reference signal and a message signal, the message signal having message data; means, including a plurality of detector means and synchronization means, for recovering a carrier signal of the combined spread spectrum signal using information from the detected reference signal; means for generating a remote reference signal at the remote unit; means to synchronize the remote reference signal with the detected reference signal; and means for recovering the message data using the recovered carrier signal. 7. The remote unit of claim 6 wherein the spread spectrum signal is in a code division multiple access format.8. The remote unit of claim 6, wherein:the means for generating a remote reference signal at the remote unit relays the detected reference signal, the remote reference signal transmitted from the remote unit; the remote unit spread-spectrum processes the remote message data with the remote reference signal, and combines the spread-spectrum-processed remote message data with the remote-reference signal as a remote-CDMA signal; and the remote unit transmits the remote-CDMA signal over a communications channel to a base station. 9. The remote unit of claim 6, wherein:the means for generating a remote reference signal at the remote unit uses the detected reference signal to set the timing for a different remote reference signal, the remote reference signal transmitted from the remote unit; the remote unit spread-spectrum processes the remote message data with the remote reference signal, and combines the spread-spectrum-processed remote message data with the remote-reference signal as a remote-CDMA signal; and the remote unit transmits the remote-CDMA signal over a communications channel to a base station. 10. A spread spectrum remote unit comprising:means for detecting a base-generic-chip-code signal; means for producing a message signal having message data; means for producing a remote-chip-code signal, the remote-chip-code signal for use in recovering the message data from a combined spread spectrum signal; means to produce a remote message signal having remote message data; means for combining the remote-chip-code signal and the remote message signal as a combined signal; and means for transmitting the combined signal as the combined spread spectrum signal. 11. The remote unit of claim 10, wherein:the means for generating a remote-chip-code signal at the remote unit relays the detected chip-code signal, the remote-chip-code signal transmitted from the remote unit; the remote unit spread-spectrum processes the remote message data with the remote-chip-code signal, and combines the spread-spectrum-processed remote message data with the remote-chip-code signal as a remote-CDMA signal; and the remote unit transmits the remote-CDMA signal over a communications channel to a base station. 12. The remote unit of claim 10, wherein:the means for generating a remote-chip-code signal at the remote unit uses the detected chip-code signal to set the timing for a different remote-chip-code signal, the remote-chip-code signal transmitted from the remote unit; the remote unit spread-spectrum processes the remote message data with the remote-chip-code signal, and combines the spread-spectrum-processed remote message data with the remote-chip-code signal as a remote-CDMA signal; and the remote unit transmits the remote-CDMA signal over a communications channel to a base station. 13. A spread spectrum remote unit comprising:means for receiving a combined spread spectrum signal, the spread spectrum signal including a reference signal and a plurality of message signals, each message signal having message data; means for detecting the reference signal within the received combined spread spectrum signal; means for generating a remote reference signal at the remote unit; means to synchronize the remote reference signal with the detected reference signal; and means, including a plurality of detector means and synchronization means, for recovering the message data of the plurality of message signals using the remote reference signal. 14. The remote unit of claim 13 further comprising:means for recovering a carrier signal from the spread spectrum signal using the reference signal; and wherein the message data recovering means uses the recovered carrier signal to recover the message data. 15. The remote unit of claim 13 wherein the spread spectrum signal is in code division multiple access format.16. The remote unit of claim 13, wherein:the means for generating a remote reference signal at the remote unit relays the detected reference signal, the remote reference signal transmitted from the remote unit; the remote unit spread-spectrum processes the remote message data with the remote reference signal, and combines the spread-sperztrum-processed remote message data with the remote-reference signal as a remote-CDMA signal; and the remote unit transmits the remote-CDMA signal over a communications channel to a base station. 17. The remote unit of claim 13, wherein:the means for generating a remote reference signal at the remote unit uses the detected reference signal to set the timing for a different remote reference signal, the remote reference signal transmitted from the remote unit; the remote unit spread-spectrum processes the remote message data with the remote reference signal, and combines the spread-spectrum-processed remote message data with the remote-reference signal as a remote-CDMA signal; and the remote unit transmits the remote-CDMA signal over a communications channel to a base station.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (138)
Schilling Donald L. (Sands Point NY), Adaptive power control for a spread spectrum transmitter.
Halpern Peter H. (Longwood FL) Mallory Peter E. (Edgewater FL) Haug Paul E. (Sanford FL) Koos ; Jr. William M. (Altamonte Spring FL), Apparatus for synchronizing linear PN sequences.
Cornell Ronald G. (Wheaton IL) Huensch George D. (Aurora IL) Shelhamer Kenneth W. (Naperville IL) Warty Pramod (Woodridge IL), Control of telecommunication switching systems.
Hustig Charles H. (Hudson WI) Ward Jeffrey L. (Hudson WI) Moses Donald W. (Minneapolis MN) Bradford Robert S. (Woodland Hills CA), Data and voice communications system.
Takeuchi Kunihiko (Kawasaki JPX) Oba Masao (Yokohama JPX) Horinouchi Shinichi (Yokohama JPX), Data transmission system using spread spectrum communication.
Kaufmann Hans (Gossau CHX) Kueng Roland (Wolfhausen CHX) Grob Urs (Goldach CHX) Welti Arnold (Brugg CHX), Digital radio transmission system for a cellular network, using the spread spectrum method.
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.
Bronder Joseph B. (East Berlin PA) Gossard William H. (Grasonville MD), Frequency division multiplex guardband communication system for sending information over the guardbands.
Wang James J. (2625 Monterey Rd. San Marino CA 91108) Grayson Robert M. (3082 Inverness Dr. Los Alamitos CA 90720), Golf course ranging and direction-finding system using spread-spectrum radiolocation techniques.
Christy Edmund H. (Metairie LA) Rouquette Robert E. (New Orleans LA) Van Doren Lawrence (San Diego CA), High frequency spread spectrum positioning system and method therefor.
Su Chun-Meng (Lafayette CA) Behtash Saman (Berkeley CA) Jarett Keith (Oakland CA), Method and an apparatus for establishing a wireless communication link between a base unit and a remote unit.
Messerschmitt David G. (Moraga CA) Flores Christopher (Oakland CA) Lu Hulhung (Danville CA), Method and an apparatus for establishing the functional capabilities for wireless communications between a base unit and.
Gilhousen Klein S. (San Diego CA) Padovani Roberto (San Diego CA) Wheatley ; III Charles E. (Del Mar CA), Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system.
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.
Gilhousen Klein S. (San Diego CA) Padovani Roberto (San Diego CA) Wheatley ; III Charles E. (Del Mar CA), Method and system for providing a soft handoff in communications in a CDMA cellular telephone system.
Grauel Christoph (Feucht DEX) Kittel Ludwig (Heroldsberg DEX) Schmidt Werner (Lauf-denberg DEX) Wellens Ulrich (Heroldsberg DEX), Method of and arrangement for transmitting messages in a digital radio transmission system.
Serrano Arthur L. (23660 Arminta St. Canoga Park CA 91304) Holman Andrew W. (24230 Archwood Canoga Park CA 91304), Microprocessor controlled interface for cellular system.
Hirosaki Botaro (Tokyo JPX) Hasegawa Satoshi (Tokyo JPX), Modem to be coupled to a directional transmission line of an SS multiplex communication network.
Comroe Richard A. (Dundee IL) Sobti Arun (Wheaton IL) Bocci Paul M. (Roselle IL) Furtaw Robert W. (Arlington Heights IL) Hiben Bradley M. (Glen Ellyn IL) McDonald James A. (Buffalo Grove IL), Near-field on-site/trunking system frequency sharing.
McDonald James A. (Buffalo Grove) Comroe Richard A. (Dundee) Sobti Arun (Wheaton) Bocci Paul M. (Roselle) Furtaw Robert W. (Arlington Heights) Hiben Bradley M. (Glen Ellyn IL), On-site system frequency sharing with trunking systems using spread spectrum.
Frosch Robert A. Administrator of the National Aeronautics and Space Administration ; with respect to an invention of ( Tempe AZ) Carson Lansing M. (Tempe AZ), PN Lock indicator for dithered PN code tracking loop.
Broekhoven Paul V. (Needham MA) Fitzmartin Daniel (Newton MA) Blasche Paul (Arlington MA) Cox ; Jr. Duncan B. (Manchester MA) Upadhyay Triveni (Burlington MA), Precorrelation digital spread spectrum receiver.
Simpson Raymond W. (Hamilton Square NJ) Chandler Donald G. (Pennington NJ) Bowers John (Monmouth Junction NJ), Remote control system, components and methods.
Simpson Raymond W. (Hamilton Square NJ) Chandler Donald G. (Pennington NJ) Bowers John (Monmouth Junction NJ), Remote control system, components and methods.
Moses Donald W. (Minneapolis MN) Hustig Charles (Hudson WI) Ballard C. Ray (Venice FL), Simultaneous transmission of two information signals within a band-limited communications channel.
Belcher Donald K. (West Melbourne FL) Bradley W. Scott (Palm Bay FL) Gimlin Darrell R. (Melbourne Beach FL) Klaasen James P. (Palm Bay FL), Spread spectrum communication system employing composite spreading codes with matched filter demodulator.
Gilhousen Klein S. (San Diego CA) Jacobs Irwin M. (La Jolla CA) Weaver ; Jr. Lindsay A. (San Diego CA), Spread spectrum multiple access communication system using satellite or terrestrial repeaters.
Gilhousen Klein S. (San Diego CA) Padovani Roberto (San Diego CA) Wheatley ; III Charles E. (Del Mar CA), Spread spectrum transmitter power control method and system.
Gilhousen Klein S. (San Diego CA) Jacobs Irwin M. (La Jolla CA) Padovani Roberto (San Diego CA) Weaver ; Jr. Lindsay A. (San Diego CA) Wheatley ; III Charles E. (Del Mar CA) Viterbi Andrew J. (La Jol, System and method for generating signal waveforms in a CDMA cellular telephone system.
Russell Gary S. (Fullerton CA) Chadwick J. Brooks (Anaheim CA) Bricker Jacob L. (Santa Ana CA), Vehicle location system having enhanced position location processing.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.