CA2111229A1 - Calling channel in a cdma communications system - Google Patents

Calling channel in a cdma communications system

Info

Publication number
CA2111229A1
CA2111229A1 CA002111229A CA2111229A CA2111229A1 CA 2111229 A1 CA2111229 A1 CA 2111229A1 CA 002111229 A CA002111229 A CA 002111229A CA 2111229 A CA2111229 A CA 2111229A CA 2111229 A1 CA2111229 A1 CA 2111229A1
Authority
CA
Canada
Prior art keywords
calling channel
mobiles
communications system
signal
cdma communications
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002111229A
Other languages
French (fr)
Other versions
CA2111229C (en
Inventor
Paul W. Dent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ericsson Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2111229A1 publication Critical patent/CA2111229A1/en
Application granted granted Critical
Publication of CA2111229C publication Critical patent/CA2111229C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

A Code Division Multiple Access (CDMA) communication system which contains a calling channel which is used to inform silent mobiles that they are being called. In the system, the calling channel is chosen to be the strongest overlapping signal so that it reaches mobiles which are located on the cells extreme boundaries. The interference other signals experience because they overlap with the calling channel may be avoided by having the mobiles first demodulate the calling channel signal and then substract it out before demodulating their own signal.
CA002111229A 1992-04-13 1993-04-13 Calling channel in a cdma communications system Expired - Fee Related CA2111229C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US86833592A 1992-04-13 1992-04-13
US868,335 1992-04-13
PCT/US1993/003526 WO1993021705A1 (en) 1992-04-13 1993-04-13 Calling channel in a cdma communications system

Publications (2)

Publication Number Publication Date
CA2111229A1 true CA2111229A1 (en) 1993-10-28
CA2111229C CA2111229C (en) 2001-06-12

Family

ID=25351467

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002111229A Expired - Fee Related CA2111229C (en) 1992-04-13 1993-04-13 Calling channel in a cdma communications system

Country Status (15)

Country Link
US (2) US5377183A (en)
EP (1) EP0566550B1 (en)
JP (1) JP3278157B2 (en)
KR (1) KR100275644B1 (en)
AU (1) AU663795B2 (en)
BR (1) BR9305481A (en)
CA (1) CA2111229C (en)
DE (1) DE69328750T2 (en)
ES (1) ES2149806T3 (en)
FI (1) FI107305B (en)
HK (1) HK1014312A1 (en)
NZ (1) NZ252828A (en)
SG (1) SG49657A1 (en)
TW (1) TW214620B (en)
WO (1) WO1993021705A1 (en)

Families Citing this family (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5550809A (en) * 1992-04-10 1996-08-27 Ericsson Ge Mobile Communications, Inc. Multiple access coding using bent sequences for mobile radio communications
EP0917308A1 (en) * 1992-04-17 1999-05-19 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Mobile assisted handover using CDMA
FI934759A (en) * 1993-10-27 1995-04-28 Nokia Telecommunications Oy Procedure for the elimination of multi-use interference and mobile station
JP3003839B2 (en) * 1993-11-08 2000-01-31 エヌ・ティ・ティ移動通信網株式会社 CDMA communication method and apparatus
US5937015A (en) * 1994-01-11 1999-08-10 Dent; Paul W. Interference mitigation by joint decoding of overlapped signals
JP3305877B2 (en) * 1994-06-23 2002-07-24 株式会社東芝 Spread spectrum wireless communication system and wireless communication device used in this system
FI96558C (en) * 1994-09-27 1996-07-10 Nokia Telecommunications Oy Method for data transmission in a TDMA mobile radio system and a mobile radio system for carrying out the method
US6049535A (en) * 1996-06-27 2000-04-11 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
USRE38523E1 (en) 1995-06-30 2004-06-01 Interdigital Technology Corporation Spreading code sequence acquisition system and method that allows fast acquisition in code division multiple access (CDMA) systems
US6788662B2 (en) 1995-06-30 2004-09-07 Interdigital Technology Corporation Method for adaptive reverse power control for spread-spectrum communications
US7020111B2 (en) * 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US7123600B2 (en) 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US5841768A (en) 1996-06-27 1998-11-24 Interdigital Technology Corporation Method of controlling initial power ramp-up in CDMA systems by using short codes
US5940382A (en) 1996-06-27 1999-08-17 Interdigital Technology Corporation Virtual locating of a fixed subscriber unit to reduce re-acquisition time
US6940840B2 (en) 1995-06-30 2005-09-06 Interdigital Technology Corporation Apparatus for adaptive reverse power control for spread-spectrum communications
US7072380B2 (en) 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
US6831905B1 (en) 1995-06-30 2004-12-14 Interdigital Technology Corporation Spread spectrum system assigning information signals to message-code signals
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US6697350B2 (en) 1995-06-30 2004-02-24 Interdigital Technology Corporation Adaptive vector correlator for spread-spectrum communications
US6816473B2 (en) 1995-06-30 2004-11-09 Interdigital Technology Corporation Method for adaptive forward power control for spread-spectrum communications
US7929498B2 (en) 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US5751762A (en) * 1996-02-15 1998-05-12 Ericsson Inc. Multichannel receiver using analysis by synthesis
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
JP3323067B2 (en) * 1996-07-12 2002-09-09 沖電気工業株式会社 CDMA receiver
US6173007B1 (en) * 1997-01-15 2001-01-09 Qualcomm Inc. High-data-rate supplemental channel for CDMA telecommunications system
US6148219A (en) * 1997-02-18 2000-11-14 Itt Manufacturing Enterprises, Inc. Positioning system for CDMA/PCS communications system
US6148195A (en) * 1997-02-18 2000-11-14 Itt Manufacturing Enterprises, Inc. Phase agile antenna for use in position determination
US5910944A (en) * 1997-02-28 1999-06-08 Motorola, Inc. Radio telephone and method for operating a radiotelephone in slotted paging mode
DE69838063T2 (en) * 1997-05-30 2008-03-13 Qualcomm Inc., San Diego Method and device for the indirect paging of a cordless terminal with less coded paging information.
US6111865A (en) * 1997-05-30 2000-08-29 Qualcomm Incorporated Dual channel slotted paging
EP1612959B1 (en) * 1997-06-17 2009-12-30 QUALCOMM Incorporated Reduced peak-to-average amplitude multichannel link
FI103446B (en) 1997-09-10 1999-06-30 Nokia Telecommunications Oy Procedure for realizing macro diversity
US6028851A (en) * 1997-09-26 2000-02-22 Telefonaktiebolaget L M Ericsson (Publ) System and method for mobile assisted admission control
US6285873B1 (en) 1998-03-09 2001-09-04 Qualcomm Incorporated Method for generating a broadcast challenge value
US6289004B1 (en) * 1998-03-12 2001-09-11 Interdigital Technology Corporation Adaptive cancellation of fixed interferers
US5956641A (en) * 1998-03-30 1999-09-21 Motorola, Inc. System and method for facilitating a handoff of at least one mobile unit in a telecommunication system
US6266320B1 (en) * 1998-04-08 2001-07-24 Telefonaktiebolaget Lm Ericsson (Publ) Amplitude limitation in CDMA system
US6243561B1 (en) * 1998-10-13 2001-06-05 Qualcomm Incorporated Offline page monitoring
US6687285B1 (en) 1999-03-19 2004-02-03 Qualcomm Incorporated Method and apparatus for supervising the performance of a quick paging channel in a dual event slotted paging system
AU753052B2 (en) 1999-07-10 2002-10-03 Samsung Electronics Co., Ltd. Apparatus and method for designating a reverse common channel for dedicated communication in a mobile communication system
US6934317B1 (en) 2000-10-11 2005-08-23 Ericsson Inc. Systems and methods for communicating spread spectrum signals using variable signal constellations
DE10050878B4 (en) * 2000-10-13 2012-07-12 Atmel Automotive Gmbh Method for transmitting a plurality of information symbols
US6882692B2 (en) * 2000-12-29 2005-04-19 Sharp Laboratories Of America, Inc. Fast transform system for an extended data rate WLAN system
US7158559B2 (en) 2002-01-15 2007-01-02 Tensor Comm, Inc. Serial cancellation receiver design for a coded signal processing engine
US8085889B1 (en) 2005-04-11 2011-12-27 Rambus Inc. Methods for managing alignment and latency in interference cancellation
US7394879B2 (en) 2001-11-19 2008-07-01 Tensorcomm, Inc. Systems and methods for parallel signal cancellation
US7260506B2 (en) 2001-11-19 2007-08-21 Tensorcomm, Inc. Orthogonalization and directional filtering
US7430253B2 (en) 2002-10-15 2008-09-30 Tensorcomm, Inc Method and apparatus for interference suppression with efficient matrix inversion in a DS-CDMA system
US7787572B2 (en) 2005-04-07 2010-08-31 Rambus Inc. Advanced signal processors for interference cancellation in baseband receivers
US7577186B2 (en) 2002-09-20 2009-08-18 Tensorcomm, Inc Interference matrix construction
US8761321B2 (en) 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
US7463609B2 (en) 2005-07-29 2008-12-09 Tensorcomm, Inc Interference cancellation within wireless transceivers
US7876810B2 (en) 2005-04-07 2011-01-25 Rambus Inc. Soft weighted interference cancellation for CDMA systems
US7808937B2 (en) 2005-04-07 2010-10-05 Rambus, Inc. Variable interference cancellation technology for CDMA systems
US8179946B2 (en) 2003-09-23 2012-05-15 Rambus Inc. Systems and methods for control of advanced receivers
US8005128B1 (en) 2003-09-23 2011-08-23 Rambus Inc. Methods for estimation and interference cancellation for signal processing
KR101011942B1 (en) 2002-09-23 2011-01-31 램버스 인코포레이티드 Method and apparatus for selectively applying interference cancellation in spread spectrum systems
JP4210649B2 (en) * 2002-10-15 2009-01-21 テンソルコム インコーポレイテッド Method and apparatus for channel amplitude estimation and interference vector construction
US7477710B2 (en) 2004-01-23 2009-01-13 Tensorcomm, Inc Systems and methods for analog to digital conversion with a signal cancellation system of a receiver
US11394436B2 (en) 2004-04-02 2022-07-19 Rearden, Llc System and method for distributed antenna wireless communications
US10425134B2 (en) 2004-04-02 2019-09-24 Rearden, Llc System and methods for planned evolution and obsolescence of multiuser spectrum
US10187133B2 (en) 2004-04-02 2019-01-22 Rearden, Llc System and method for power control and antenna grouping in a distributed-input-distributed-output (DIDO) network
US11309943B2 (en) 2004-04-02 2022-04-19 Rearden, Llc System and methods for planned evolution and obsolescence of multiuser spectrum
US10985811B2 (en) 2004-04-02 2021-04-20 Rearden, Llc System and method for distributed antenna wireless communications
US9312929B2 (en) 2004-04-02 2016-04-12 Rearden, Llc System and methods to compensate for Doppler effects in multi-user (MU) multiple antenna systems (MAS)
US8654815B1 (en) 2004-04-02 2014-02-18 Rearden, Llc System and method for distributed antenna wireless communications
US11451275B2 (en) 2004-04-02 2022-09-20 Rearden, Llc System and method for distributed antenna wireless communications
US10277290B2 (en) 2004-04-02 2019-04-30 Rearden, Llc Systems and methods to exploit areas of coherence in wireless systems
US10200094B2 (en) 2004-04-02 2019-02-05 Rearden, Llc Interference management, handoff, power control and link adaptation in distributed-input distributed-output (DIDO) communication systems
US8542763B2 (en) * 2004-04-02 2013-09-24 Rearden, Llc Systems and methods to coordinate transmissions in distributed wireless systems via user clustering
US10749582B2 (en) 2004-04-02 2020-08-18 Rearden, Llc Systems and methods to coordinate transmissions in distributed wireless systems via user clustering
US10886979B2 (en) 2004-04-02 2021-01-05 Rearden, Llc System and method for link adaptation in DIDO multicarrier systems
US7961880B2 (en) * 2005-08-26 2011-06-14 The Directv Group, Inc. Methods and apparatuses for determining scrambling codes for signal transmission
US7672285B2 (en) * 2004-06-28 2010-03-02 Dtvg Licensing, Inc. Method and apparatus for minimizing co-channel interference by scrambling
US7161988B2 (en) 2004-04-12 2007-01-09 The Directv Group, Inc. Method and apparatus for minimizing co-channel interference
WO2005101845A2 (en) * 2004-04-12 2005-10-27 The Directv Group, Inc. Methods and apparatuses for minimizing co-channel interference
US8213553B2 (en) * 2004-04-12 2012-07-03 The Directv Group, Inc. Method and apparatus for identifying co-channel interference
US7599390B2 (en) * 2004-07-21 2009-10-06 Rambus Inc. Approximate bit-loading for data transmission over frequency-selective channels
US9685997B2 (en) 2007-08-20 2017-06-20 Rearden, Llc Systems and methods to enhance spatial diversity in distributed-input distributed-output wireless systems
US8509321B2 (en) * 2004-12-23 2013-08-13 Rambus Inc. Simultaneous bi-directional link
US7826516B2 (en) 2005-11-15 2010-11-02 Rambus Inc. Iterative interference canceller for wireless multiple-access systems with multiple receive antennas
EP1843484A1 (en) * 2006-04-03 2007-10-10 Nokia Siemens Networks Gmbh & Co. Kg Method for data transmission in a radio communication system as well as radio station and radio communications system
FR2916116A1 (en) * 2007-05-11 2008-11-14 France Telecom METHODS FOR TRANSMITTING AND RECEIVING A MULTIPLE CARRIER SIGNAL AND SPECTRUM SHIFTING, SIGNAL, COMPUTER PROGRAM PRODUCTS, AND CORRESPONDING TRANSMITTING AND RECEIVING DEVICES.
US11190947B2 (en) 2014-04-16 2021-11-30 Rearden, Llc Systems and methods for concurrent spectrum usage within actively used spectrum
US11189917B2 (en) 2014-04-16 2021-11-30 Rearden, Llc Systems and methods for distributing radioheads
US10194346B2 (en) 2012-11-26 2019-01-29 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US11050468B2 (en) 2014-04-16 2021-06-29 Rearden, Llc Systems and methods for mitigating interference within actively used spectrum
US10164698B2 (en) 2013-03-12 2018-12-25 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US9973246B2 (en) 2013-03-12 2018-05-15 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US9923657B2 (en) 2013-03-12 2018-03-20 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
RU2767777C2 (en) 2013-03-15 2022-03-21 Риарден, Ллк Systems and methods of radio frequency calibration using the principle of reciprocity of channels in wireless communication with distributed input - distributed output
US11290162B2 (en) 2014-04-16 2022-03-29 Rearden, Llc Systems and methods for mitigating interference within actively used spectrum

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4134071A (en) * 1971-07-19 1979-01-09 Licentia Patent-Verwaltungs-G.M.B.H. SSMA Data transmission system
US4644560A (en) * 1982-08-13 1987-02-17 Hazeltine Corporation Intranetwork code division multiple access communication system
US4470138A (en) 1982-11-04 1984-09-04 The United States Of America As Represented By The Secretary Of The Army Non-orthogonal mobile subscriber multiple access system
DE3482627D1 (en) * 1983-04-11 1990-08-09 Nec Corp ORTHOGONAL TRANSFORMATION AND DEVICE FOR IMPLEMENTING IT.
DE3447107A1 (en) * 1984-12-22 1986-06-26 Philips Patentverwaltung Gmbh, 2000 Hamburg PROCESS FOR TRANSMITTING MESSAGES IN A DIGITAL RADIO TRANSMISSION SYSTEM
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
JPH01103034A (en) 1987-10-16 1989-04-20 Nippon Telegr & Teleph Corp <Ntt> Connection control system in mobile communication
SE463540B (en) * 1988-09-19 1990-12-03 Ericsson Telefon Ab L M SEAT TO DIGITALIZE ANY RADIO SIGNALS IN A RADIO COMMUNICATION SYSTEM AND DEVICE TO EXERCISE THE SET
CH676179A5 (en) * 1988-09-29 1990-12-14 Ascom Zelcom Ag
US4930140A (en) * 1989-01-13 1990-05-29 Agilis Corporation Code division multiplex system using selectable length spreading code sequences
US5150361A (en) * 1989-01-23 1992-09-22 Motorola, Inc. Energy saving protocol for a TDM radio
US4961073A (en) * 1989-02-27 1990-10-02 Motorola, Inc. Battery saving apparatus and method providing optimum synchronization codeword detection
US5042082A (en) * 1989-06-26 1991-08-20 Telefonaktiebolaget L. M. Ericsson Mobile assisted handoff
US5101501A (en) * 1989-11-07 1992-03-31 Qualcomm Incorporated Method and system for providing a soft handoff in communications in a cdma cellular telephone system
US5056109A (en) * 1989-11-07 1991-10-08 Qualcomm, Inc. Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system
US5109390A (en) * 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
JPH03154437A (en) * 1989-11-13 1991-07-02 Nippon Telegr & Teleph Corp <Ntt> Incoming call control system
US5022049A (en) * 1989-11-21 1991-06-04 Unisys Corp. Multiple access code acquisition system
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5091942A (en) * 1990-07-23 1992-02-25 Ericsson Ge Mobile Communications Holding, Inc. Authentication system for digital cellular communications
US5230084A (en) * 1990-12-06 1993-07-20 Motorola, Inc. Selective call receiver having extended battery saving capability
US5151919A (en) * 1990-12-17 1992-09-29 Ericsson-Ge Mobile Communications Holding Inc. Cdma subtractive demodulation
US5164958A (en) * 1991-05-22 1992-11-17 Cylink Corporation Spread spectrum cellular handoff method
US5179571A (en) * 1991-07-10 1993-01-12 Scs Mobilecom, Inc. Spread spectrum cellular handoff apparatus and method
US5127021A (en) * 1991-07-12 1992-06-30 Schreiber William F Spread spectrum television transmission
US5392287A (en) * 1992-03-05 1995-02-21 Qualcomm Incorporated Apparatus and method for reducing power consumption in a mobile communications receiver

Also Published As

Publication number Publication date
DE69328750T2 (en) 2000-10-12
FI935544A (en) 1994-01-28
ES2149806T3 (en) 2000-11-16
AU663795B2 (en) 1995-10-19
FI107305B (en) 2001-06-29
KR100275644B1 (en) 2000-12-15
TW214620B (en) 1993-10-11
HK1014312A1 (en) 1999-09-24
FI935544A0 (en) 1993-12-10
SG49657A1 (en) 1998-06-15
KR940701613A (en) 1994-05-28
AU4286193A (en) 1993-11-18
WO1993021705A1 (en) 1993-10-28
USRE39980E1 (en) 2008-01-01
EP0566550A3 (en) 1994-03-09
EP0566550B1 (en) 2000-05-31
JPH06511610A (en) 1994-12-22
JP3278157B2 (en) 2002-04-30
NZ252828A (en) 1996-08-27
BR9305481A (en) 1994-10-11
CA2111229C (en) 2001-06-12
EP0566550A2 (en) 1993-10-20
DE69328750D1 (en) 2000-07-06
US5377183A (en) 1994-12-27

Similar Documents

Publication Publication Date Title
CA2111229A1 (en) Calling channel in a cdma communications system
CA2616764A1 (en) Adaptive power control for a spread spectrum communications system and method
AU3419295A (en) Improving the performance of a mobile cellular communication system
CA2149094A1 (en) Transmission Power Control Method of a Spread-Spectrum Communication System, and Spread-Spectrum Communication System Employing the Control Method
AU546036B2 (en) Radio mobile communications
CA2211925A1 (en) Downlink transmission power control scheme for mobile communication system using site diversity
WO1996008941A3 (en) Efficient paging system
AU570752B2 (en) Mobile communications
CA2267029A1 (en) Method of preventing interference of adjacent frequencies in a cellular system by selection between adjacent carrier frequency and non-adjacent carrier frequency
AU567906B2 (en) Cellular mobile radio telephone system
AU5031579A (en) Mobile telephone channel exchange system
AU7334887A (en) Power line communication interference preventing circuit
SG33526A1 (en) CDMA cellular communications with multicarrier signal processing
CA2137515A1 (en) Mobile Communication System Capable of Transmitting and Receiving a Radio Signal Obtained by TDMA and CDMA Without Interference
CA2255845A1 (en) Method of and apparatus for interference rejection combining and downlink beamforming in a cellular radiocommunications system
CA2139234A1 (en) Use of diversity transmission to relax adjacent channel requirements in mobile telephone systems
AU570386B2 (en) Radio communication system
EP0648060A3 (en) Mobile radio telecommunications system.
EP0265918A3 (en) Optical broad band communication transmission system, especially in the subscriber access area
AU4374779A (en) Multi band radio receiver system
AU6972096A (en) Cellular communication system with dynamically modified data transmission parameters
AU3418997A (en) Radio selective call receiver
EP0654900A3 (en) Radio communication device with power control of transmission.
EP0607970A3 (en) Digital mobile radio communication system.
GB2333667B (en) Circuit for eliminating external interference signals in code division multiple access mobile phone

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20040413