WO2001056170A3 - Cdma communication system having a highly selective filter - Google Patents

Cdma communication system having a highly selective filter Download PDF

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Publication number
WO2001056170A3
WO2001056170A3 PCT/US2001/002397 US0102397W WO0156170A3 WO 2001056170 A3 WO2001056170 A3 WO 2001056170A3 US 0102397 W US0102397 W US 0102397W WO 0156170 A3 WO0156170 A3 WO 0156170A3
Authority
WO
WIPO (PCT)
Prior art keywords
highly selective
selective filter
communication
base station
communication device
Prior art date
Application number
PCT/US2001/002397
Other languages
French (fr)
Other versions
WO2001056170A2 (en
Inventor
Amr Abdelmonem
Stephen K Remillard
Benjamin Golant
Original Assignee
Isco Internat Inc
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 Isco Internat Inc filed Critical Isco Internat Inc
Priority to EP01946993A priority Critical patent/EP1250764A2/en
Priority to AU2001229758A priority patent/AU2001229758A1/en
Priority to IL15053701A priority patent/IL150537A0/en
Publication of WO2001056170A2 publication Critical patent/WO2001056170A2/en
Publication of WO2001056170A3 publication Critical patent/WO2001056170A3/en

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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • 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
    • H04B1/7097—Interference-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/155—Ground-based stations

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)

Abstract

A communication system includes a communication device and a base station in RF communication with the communication device in accordance with a code-based modulation scheme, such as W-CDMA. A highly selective filter is included in a receive path of the base station to improve performance in both uplink and downlink signals transmitted during the RF communication. The base station has an antenna for receiving the uplink signal, which is then provided to the highly selective filter for selection of a desired frequency band. A low-noise amplifier couples the highly selective filter to a demodulator responsive to signals modulated in accordance with the code-based modulation scheme. The demodulator is part of a data processing module to which the low-noise amplifier may be directly connected. The improved performance includes a reduction in power control messaging on the downlink signal, a reduction in a power level associated with the transmission of the uplink signal from the communication device, and an increase in both downlink and uplink capacity.
PCT/US2001/002397 2000-01-25 2001-01-24 Cdma communication system having a highly selective filter WO2001056170A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01946993A EP1250764A2 (en) 2000-01-25 2001-01-24 Cdma communication system having a highly selective filter
AU2001229758A AU2001229758A1 (en) 2000-01-25 2001-01-24 Cdma communication system having a highly selective filter
IL15053701A IL150537A0 (en) 2000-01-25 2001-01-24 Cdma communication system having a highly selective filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49059600A 2000-01-25 2000-01-25
US09/490,596 2000-01-25

Publications (2)

Publication Number Publication Date
WO2001056170A2 WO2001056170A2 (en) 2001-08-02
WO2001056170A3 true WO2001056170A3 (en) 2002-04-04

Family

ID=23948713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/002397 WO2001056170A2 (en) 2000-01-25 2001-01-24 Cdma communication system having a highly selective filter

Country Status (7)

Country Link
EP (1) EP1250764A2 (en)
JP (1) JP2001251241A (en)
KR (1) KR20010076217A (en)
CN (1) CN1411631A (en)
AU (1) AU2001229758A1 (en)
IL (1) IL150537A0 (en)
WO (1) WO2001056170A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1237731C (en) * 2000-09-29 2006-01-18 株式会社Ntt都科摩 High sensitivity wireless receiving device and high-frequency unit used therefor
DE10152344C1 (en) * 2001-10-24 2003-06-05 Siemens Ag Arrangement for transmission/reception improvements in radio communications system with base station has individual transmitter-receivers per antenna in common thermal insulator
ATE373342T1 (en) * 2003-07-04 2007-09-15 Pirelli & C Spa HIGHLY RELIABLE RECEIVER FRONT END
US8224240B2 (en) 2003-11-25 2012-07-17 Zte Corporation Method and apparatus for implementing beam forming in CDMA communication system
CN100344189C (en) * 2004-11-10 2007-10-17 郑长春 3G mobile communication network base station up-down power amplifying march-past combination unit
CN107453727B (en) * 2017-08-07 2021-01-15 大连海事大学 Low-insertion-loss negative group time delay microwave circuit

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5244869A (en) * 1990-10-23 1993-09-14 Westinghouse Electric Corp. Superconducting microwave frequency selective filter system
US5604925A (en) * 1995-04-28 1997-02-18 Raytheon E-Systems Super low noise multicoupler
WO1997006606A1 (en) * 1995-08-09 1997-02-20 Superconducting Core Technologies, Inc. Cryolectronic receiver front end for mobile radio systems
WO1999006777A1 (en) * 1997-08-01 1999-02-11 K & L Microwave Cryogenic filters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5244869A (en) * 1990-10-23 1993-09-14 Westinghouse Electric Corp. Superconducting microwave frequency selective filter system
US5604925A (en) * 1995-04-28 1997-02-18 Raytheon E-Systems Super low noise multicoupler
WO1997006606A1 (en) * 1995-08-09 1997-02-20 Superconducting Core Technologies, Inc. Cryolectronic receiver front end for mobile radio systems
WO1999006777A1 (en) * 1997-08-01 1999-02-11 K & L Microwave Cryogenic filters

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ASKEW R E ET AL: "A LOW-NOISE PELTIER-COOLED FET AMPLIFIER", RCA REVIEW, RCA CORP. PRINCETON, US, vol. 42, 1 December 1981 (1981-12-01), pages 661 - 671, XP002011708 *
BHASIN K B: "PERFORMANCE OF A Y-BA-CU-O SUPERCONDUCTING FILTER/GAAS LOW NOISE AMPLIFIER HYBRID CIRCUIT", INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST (MTT-S). ALBUQUERQUE, JUNE 1 - 5, 1992, NEW YORK, IEEE, US, vol. 1, 1 June 1992 (1992-06-01), pages 481 - 483, XP000332760 *

Also Published As

Publication number Publication date
EP1250764A2 (en) 2002-10-23
AU2001229758A1 (en) 2001-08-07
CN1411631A (en) 2003-04-16
WO2001056170A2 (en) 2001-08-02
IL150537A0 (en) 2003-02-12
JP2001251241A (en) 2001-09-14
KR20010076217A (en) 2001-08-11

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