WO2000046937A1 - Communication station with automatic cable loss compensation - Google Patents

Communication station with automatic cable loss compensation Download PDF

Info

Publication number
WO2000046937A1
WO2000046937A1 PCT/US1999/030652 US9930652W WO0046937A1 WO 2000046937 A1 WO2000046937 A1 WO 2000046937A1 US 9930652 W US9930652 W US 9930652W WO 0046937 A1 WO0046937 A1 WO 0046937A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
loss
recited
signal line
transmit signal
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.)
Ceased
Application number
PCT/US1999/030652
Other languages
English (en)
French (fr)
Inventor
John Bird
Leonid Kazakevich
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.)
InterDigital Technology Corp
Original Assignee
InterDigital Technology Corp
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 InterDigital Technology Corp filed Critical InterDigital Technology Corp
Priority to US09/890,391 priority Critical patent/US7123939B1/en
Priority to AT99967532T priority patent/ATE251821T1/de
Priority to JP2000597908A priority patent/JP2002536908A/ja
Priority to EP99967532A priority patent/EP1147621B9/en
Priority to AU23797/00A priority patent/AU2379700A/en
Priority to DE69912001T priority patent/DE69912001T2/de
Priority to HK02103092.9A priority patent/HK1042602B/en
Publication of WO2000046937A1 publication Critical patent/WO2000046937A1/en
Anticipated expiration legal-status Critical
Priority to US11/179,083 priority patent/US7155257B2/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/102—Power radiated at antenna
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing
    • H04B17/18—Monitoring during normal operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits

Definitions

  • the present invention relates to wireless digital communications systems.
  • the present invention relates to a code-division multiple access
  • CDMA Code Division Multiple Access
  • CDMA systems provide an efficient use of the limited bandwidth of the RF
  • the spread signal is upconverted to
  • a receiver identified by the pseudorandom spreading
  • FIG. 1 A prior art CDMA communication system is shown in Figure 1. The
  • Each base station 20,, 20 2 , ... 20 n communicates using spread
  • a CDMA base station typically has equipment such as an RF power amplifier
  • RF amplifier is located at a distance from the antenna. Although RF power is still
  • Overpowering the RF amplifier can cause interference with
  • the measurement of the power of an RF signal received by a base station is
  • the present invention compensates for the variability of transmitted RF signal
  • Figure 1 is an illustration of a prior art CDMA system.
  • FIG. 2 is an illustration of a base station made in accordance with the
  • Figure 3 is a block diagram of a CDMA ground station with remotely located
  • Figure 4 is a flow diagram of a method for adjusting cable compensation
  • a communications network employing the present invention is shown in
  • the communications network includes a plurality of base stations 20 ⁇ 20 2 ,
  • the mast head unit 320 includes an RF
  • a coaxial cable 340 conveys RF signals
  • a separate cable assembly 350 conveys
  • the ground-based equipment 300 receives a signal
  • Tx to be transmitted (Tx), which has already been upconverted to the desired
  • An infinitely variable attenuator 308 adjusts the Tx signal
  • a touchpad front panel control 310 permits manual adjustment of
  • the level-adjusted Tx signal is level adjusted a second time by a variable
  • a first power level detector 402 measures the power of the level adjusted Tx
  • a diplexer allows bidirectional transmission of signals on a single
  • the Tx signal is sent through the RF cable 340 to an output diplexer 301 in
  • HPA high power amplifier
  • antenna 360 is routed through the antenna diplexer 303 to a low noise amplifier
  • the received (Rx) signal is amplified by the LNA 302 and routed
  • the Rx signal is stripped off the RF cable 340 by the
  • the received signal is level adjusted by a second variable cable compensation attenuator 404 and then buffered by an amplifier 306 and routed to
  • a microcontroller 305 in the mast head unit 320 sends the power
  • the microcontroller 311 in the ground-based equipment 300 in the ground-based equipment 300.
  • pre-amplifier 309 with the power level measured at the input to the high power
  • the microcontroller 311 then adjusts the
  • first variable cable attenuator 401 to maintain a constant power level at the input to
  • the control system comprising ground-based power
  • mast head unit power level detector 403 mast head unit power level detector 403
  • based unit microcontroller 311 provides a continuous automatic adjustment for the
  • variable loss associated with the RF cable 340 is variable loss associated with the RF cable 340.
  • An alternate embodiment of the invention combines cell size attenuator 308
  • Figure 4 shows the procedure 400 for cable loss compensation 400
  • the cable compensation method 400 is designed to adjust cable loss to
  • a measurement of cable loss (L) is made by comparing
  • the cable loss L is between lower limit A and upper limit B, or is equal to either
  • step 416 a further comparison is made a step 416.
  • the gain of the cable attenuators 402, 403 is decreased, as shown at step 420.
  • TDD Timed Division Duplex
  • FDD Frequency Division Duplex
  • MDS Multimedia Distribution System

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Communication Cables (AREA)
  • Near-Field Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Transceivers (AREA)
PCT/US1999/030652 1999-02-05 1999-12-23 Communication station with automatic cable loss compensation Ceased WO2000046937A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US09/890,391 US7123939B1 (en) 1999-02-05 1999-12-23 Communication station with automatic cable loss compensation
AT99967532T ATE251821T1 (de) 1999-02-05 1999-12-23 Kommunikationsbasisstation mit automatischer kabeldämpfungskompensation
JP2000597908A JP2002536908A (ja) 1999-02-05 1999-12-23 ケーブル損失自動補償手段を備える送受信局
EP99967532A EP1147621B9 (en) 1999-02-05 1999-12-23 Communication station with automatic cable loss compensation
AU23797/00A AU2379700A (en) 1999-02-05 1999-12-23 Communication station with automatic cable loss compensation
DE69912001T DE69912001T2 (de) 1999-02-05 1999-12-23 Kommunikationsbasisstation mit automatischer kabeldämpfungskompensation
HK02103092.9A HK1042602B (en) 1999-02-05 1999-12-23 Communication station with automatic cable loss compensation
US11/179,083 US7155257B2 (en) 1999-02-05 2005-07-11 Communication station with automatic cable loss compensation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11882499P 1999-02-05 1999-02-05
US60/118,824 1999-02-05

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US09890391 A-371-Of-International 1999-12-23
US11/179,083 Continuation US7155257B2 (en) 1999-02-05 2005-07-11 Communication station with automatic cable loss compensation

Publications (1)

Publication Number Publication Date
WO2000046937A1 true WO2000046937A1 (en) 2000-08-10

Family

ID=22380961

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/030652 Ceased WO2000046937A1 (en) 1999-02-05 1999-12-23 Communication station with automatic cable loss compensation

Country Status (10)

Country Link
US (1) US7155257B2 (https=)
EP (1) EP1147621B9 (https=)
JP (2) JP2002536908A (https=)
AT (1) ATE251821T1 (https=)
AU (1) AU2379700A (https=)
DE (1) DE69912001T2 (https=)
ES (1) ES2204186T3 (https=)
HK (1) HK1042602B (https=)
SE (1) SE1147621T5 (https=)
WO (1) WO2000046937A1 (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002190771A (ja) * 2000-12-22 2002-07-05 Hitachi Kokusai Electric Inc 無線通信装置
US7305013B2 (en) 2002-04-24 2007-12-04 Eci Telecom Ltd. Handling traffic in a synchronous communication network

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7729726B2 (en) 2004-03-26 2010-06-01 Nortel Networks Limited Feeder cable reduction
US8135086B1 (en) 2004-08-09 2012-03-13 Rockstar Bidco, LP Cable reduction
US7386284B2 (en) * 2004-12-01 2008-06-10 Silicon Laboratories Inc. Controlling the gain of a remote active antenna
US20070008939A1 (en) * 2005-06-10 2007-01-11 Adc Telecommunications, Inc. Providing wireless coverage into substantially closed environments
JPWO2007058341A1 (ja) * 2005-11-21 2009-05-07 富士通テン株式会社 受信装置
US8452333B2 (en) * 2005-12-12 2013-05-28 Apple Inc. Feeder cable reduction
CN100517995C (zh) 2006-03-08 2009-07-22 鸿富锦精密工业（深圳）有限公司 无线收发系统
TWI295126B (en) * 2006-03-15 2008-03-21 Acer Inc System and method for receiving wireless signals
TWI305979B (en) * 2006-03-24 2009-02-01 Hon Hai Prec Ind Co Ltd Wireless transceiving system
US7660570B2 (en) * 2007-03-12 2010-02-09 John Mezzalingua Associates, Inc. Active step attenuator
US20100302007A1 (en) * 2009-05-29 2010-12-02 Symbol Technologies, Inc. Methods and apparatus for rfid reader cable calibration
US9118424B2 (en) * 2010-04-15 2015-08-25 Commscope, Inc. Of North Carolina Optical network unit (ONU) having controllable optical output and method of controlling the optical output of an ONU
US8472579B2 (en) 2010-07-28 2013-06-25 Adc Telecommunications, Inc. Distributed digital reference clock
US8532242B2 (en) 2010-10-27 2013-09-10 Adc Telecommunications, Inc. Distributed antenna system with combination of both all digital transport and hybrid digital/analog transport
US8462683B2 (en) 2011-01-12 2013-06-11 Adc Telecommunications, Inc. Distinct transport path for MIMO transmissions in distributed antenna systems
US9178636B2 (en) 2013-02-22 2015-11-03 Adc Telecommunications, Inc. Universal remote radio head
CA2914104C (en) 2013-02-22 2022-12-13 Adc Telecommunications, Inc. Master reference for base station network interface sourced from distributed antenna system
US9654233B2 (en) * 2013-04-04 2017-05-16 Nokia Solutions And Networks Oy VSWR estimation using spectral analysis to suppress external interference
US9787457B2 (en) 2013-10-07 2017-10-10 Commscope Technologies Llc Systems and methods for integrating asynchronous signals in distributed antenna system with direct digital interface to base station
AU2015274498B2 (en) 2014-06-11 2019-09-19 Outdoor Wireless Networks LLC Bitrate efficient transport through distributed antenna systems
DE102014215578A1 (de) 2014-08-06 2016-02-11 U-Blox Ag Kompensatormodul für eine Sendeempfängereinheit, Funksystem sowie Verfahren zum Betreiben desselbigen
DE102015211413A1 (de) * 2015-06-22 2016-12-22 Continental Automotive Gmbh Kompensationsvorrichtung, insbesondere Chipset-unabhängige Kompensationsvorrichtung für eine C2C-Kommunikation
US10499269B2 (en) 2015-11-12 2019-12-03 Commscope Technologies Llc Systems and methods for assigning controlled nodes to channel interfaces of a controller
EP3331316B1 (en) 2016-11-30 2021-01-06 Nxp B.V. Remote antenna compensation
EP4398497A3 (en) 2018-10-04 2024-10-09 ViaSat Inc. Time-division duplex (tdd) antenna system
KR102786934B1 (ko) * 2019-11-15 2025-03-27 삼성전자주식회사 차량용 고주파 통신 장치 및 방법
US11804912B2 (en) 2020-04-03 2023-10-31 Viasat, Inc. Time-division duplex (TDD) antenna system
CN113572493B (zh) * 2020-11-04 2022-09-23 中兴通讯股份有限公司 信号收发装置、信号放大装置、通信系统的运行方法
US12176966B2 (en) 2021-05-24 2024-12-24 Shure Acquisition Holdings, Inc. Determination and compensation of radio frequency signal attenuation

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442259A1 (en) * 1990-01-18 1991-08-21 Andrew A.G. Regenerative RF bi-directional amplifier system
US5502715A (en) * 1995-03-16 1996-03-26 Penny; James R. Integrated diplexer-amplifier for near antenna installation
US5634191A (en) * 1994-10-24 1997-05-27 Pcs Microcell International, Inc. Self-adjusting RF repeater arrangements for wireless telephone systems
US5737687A (en) * 1995-03-01 1998-04-07 Qualcomm Incorporated Self-attenuating RF transceiver system using antenna and modem interfaces and cable link

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321849A (en) * 1991-05-22 1994-06-14 Southwestern Bell Technology Resources, Inc. System for controlling signal level at both ends of a transmission link based on a detected valve
US5548820A (en) * 1994-07-26 1996-08-20 Telefonaktiebolaget Lm Ericsson Antenna and feeder cable tester
DE4441761A1 (de) * 1994-11-23 1996-05-30 Lindenmeier Heinz Mehrantennen-Scanning-Diversitysystem für Fahrzeuge
JP3132638B2 (ja) * 1995-08-08 2001-02-05 日本電気株式会社 光波長多重伝送方式
KR100193843B1 (ko) * 1996-09-13 1999-06-15 윤종용 이동통신시스템 송수신기의 디지탈 자동이득제어방법 및 장치
CN1183784C (zh) * 1997-10-21 2005-01-05 因特威夫通讯国际有限公司 蜂窝通信网的独立塔顶单元
US5959492A (en) * 1997-10-31 1999-09-28 Vlsi Technology, Inc. High speed differential driver circuitry and methods for implementing the same
US6466628B1 (en) * 1998-04-18 2002-10-15 Lucent Technologies Inc. Technique for effectively rendering power amplification and control in wireless communications
US6084772A (en) * 1998-09-03 2000-07-04 Nortel Networks Corporation Electronics enclosure for power electronics with passive thermal management

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0442259A1 (en) * 1990-01-18 1991-08-21 Andrew A.G. Regenerative RF bi-directional amplifier system
US5634191A (en) * 1994-10-24 1997-05-27 Pcs Microcell International, Inc. Self-adjusting RF repeater arrangements for wireless telephone systems
US5737687A (en) * 1995-03-01 1998-04-07 Qualcomm Incorporated Self-attenuating RF transceiver system using antenna and modem interfaces and cable link
US5502715A (en) * 1995-03-16 1996-03-26 Penny; James R. Integrated diplexer-amplifier for near antenna installation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002190771A (ja) * 2000-12-22 2002-07-05 Hitachi Kokusai Electric Inc 無線通信装置
US7305013B2 (en) 2002-04-24 2007-12-04 Eci Telecom Ltd. Handling traffic in a synchronous communication network

Also Published As

Publication number Publication date
SE1147621T5 (https=) 2004-10-26
EP1147621B1 (en) 2003-10-08
ES2204186T3 (es) 2004-04-16
DE69912001D1 (de) 2003-11-13
EP1147621B9 (en) 2004-08-18
ATE251821T1 (de) 2003-10-15
JP2004194351A (ja) 2004-07-08
AU2379700A (en) 2000-08-25
SE1147621T3 (https=) 2004-01-20
US7155257B2 (en) 2006-12-26
HK1042602B (en) 2004-07-16
JP2002536908A (ja) 2002-10-29
US20050250541A1 (en) 2005-11-10
EP1147621A1 (en) 2001-10-24
HK1042602A1 (en) 2002-08-16
DE69912001T2 (de) 2004-05-06

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