WO2008099383A3 - Mimo-adapted distributed antenna system - Google Patents

Mimo-adapted distributed antenna system Download PDF

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Publication number
WO2008099383A3
WO2008099383A3 PCT/IL2008/000156 IL2008000156W WO2008099383A3 WO 2008099383 A3 WO2008099383 A3 WO 2008099383A3 IL 2008000156 W IL2008000156 W IL 2008000156W WO 2008099383 A3 WO2008099383 A3 WO 2008099383A3
Authority
WO
WIPO (PCT)
Prior art keywords
mimo
frequency
antenna system
distributed antenna
network
Prior art date
Application number
PCT/IL2008/000156
Other languages
French (fr)
Other versions
WO2008099383A2 (en
Inventor
Isaac Shapira
Ofer Saban
Yehuda Holtzman
Dror Harel
Original Assignee
Mobileaccess Networks Ltd.
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39685392&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2008099383(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mobileaccess Networks Ltd. filed Critical Mobileaccess Networks Ltd.
Publication of WO2008099383A2 publication Critical patent/WO2008099383A2/en
Publication of WO2008099383A3 publication Critical patent/WO2008099383A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/04—Position of source determined by a plurality of spaced direction-finders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/023—Monitoring or calibrating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • H04L27/125—Modulator circuits; Transmitter circuits using a controlled oscillator in an open loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing

Abstract

Methods and systems for carrying different signals required for MIMO communication using a single coaxial cable between two endpoints of a distributed antenna system (DAS) network. Original MIMO signals having the same frequency are frequency-separated at a first endpoint of the network. The frequency-separated signals are propagated together over the single coaxial cable and then reconstructed to their original frequency at a second endpoint of the network.
PCT/IL2008/000156 2007-02-12 2008-02-05 Mimo-adapted distributed antenna system WO2008099383A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US88930607P 2007-02-12 2007-02-12
US60/889,306 2007-02-12

Publications (2)

Publication Number Publication Date
WO2008099383A2 WO2008099383A2 (en) 2008-08-21
WO2008099383A3 true WO2008099383A3 (en) 2010-02-25

Family

ID=39685392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2008/000156 WO2008099383A2 (en) 2007-02-12 2008-02-05 Mimo-adapted distributed antenna system

Country Status (2)

Country Link
US (2) US7483504B2 (en)
WO (1) WO2008099383A2 (en)

Families Citing this family (110)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6200134B1 (en) 1998-01-20 2001-03-13 Kerr Corporation Apparatus and method for curing materials with radiation
IT1403065B1 (en) 2010-12-01 2013-10-04 Andrew Wireless Systems Gmbh DISTRIBUTED ANTENNA SYSTEM FOR MIMO SIGNALS.
US8396368B2 (en) * 2009-12-09 2013-03-12 Andrew Llc Distributed antenna system for MIMO signals
US8811917B2 (en) 2002-05-01 2014-08-19 Dali Systems Co. Ltd. Digital hybrid mode power amplifier system
US8380143B2 (en) 2002-05-01 2013-02-19 Dali Systems Co. Ltd Power amplifier time-delay invariant predistortion methods and apparatus
US7787823B2 (en) 2006-09-15 2010-08-31 Corning Cable Systems Llc Radio-over-fiber (RoF) optical fiber cable system with transponder diversity and RoF wireless picocellular system using same
US7848654B2 (en) 2006-09-28 2010-12-07 Corning Cable Systems Llc Radio-over-fiber (RoF) wireless picocellular system with combined picocells
US8873585B2 (en) 2006-12-19 2014-10-28 Corning Optical Communications Wireless Ltd Distributed antenna system for MIMO technologies
CN104202279A (en) 2006-12-26 2014-12-10 大力系统有限公司 Method and system for baseband predistortion linearization in multi-channel wideband communication systems
US8111998B2 (en) 2007-02-06 2012-02-07 Corning Cable Systems Llc Transponder systems and methods for radio-over-fiber (RoF) wireless picocellular systems
WO2008099383A2 (en) * 2007-02-12 2008-08-21 Mobileaccess Networks Ltd. Mimo-adapted distributed antenna system
US20100054746A1 (en) 2007-07-24 2010-03-04 Eric Raymond Logan Multi-port accumulator for radio-over-fiber (RoF) wireless picocellular systems
US8175459B2 (en) 2007-10-12 2012-05-08 Corning Cable Systems Llc Hybrid wireless/wired RoF transponder and hybrid RoF communication system using same
WO2009081376A2 (en) 2007-12-20 2009-07-02 Mobileaccess Networks Ltd. Extending outdoor location based services and applications into enclosed areas
US9673904B2 (en) 2009-02-03 2017-06-06 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
WO2010090999A1 (en) 2009-02-03 2010-08-12 Corning Cable Systems Llc Optical fiber-based distributed antenna systems, components, and related methods for monitoring and configuring thereof
EP2394379B1 (en) 2009-02-03 2016-12-28 Corning Optical Communications LLC Optical fiber-based distributed antenna systems, components, and related methods for calibration thereof
US9072572B2 (en) 2009-04-02 2015-07-07 Kerr Corporation Dental light device
US9066777B2 (en) 2009-04-02 2015-06-30 Kerr Corporation Curing light device
US8588614B2 (en) * 2009-05-22 2013-11-19 Extenet Systems, Inc. Flexible distributed antenna system
US9590733B2 (en) 2009-07-24 2017-03-07 Corning Optical Communications LLC Location tracking using fiber optic array cables and related systems and methods
US8548330B2 (en) 2009-07-31 2013-10-01 Corning Cable Systems Llc Sectorization in distributed antenna systems, and related components and methods
DE102009052936B8 (en) * 2009-11-12 2012-05-10 Andrew Wireless Systems Gmbh Master unit, remote unit as well as multiband transmission system
US8280259B2 (en) 2009-11-13 2012-10-02 Corning Cable Systems Llc Radio-over-fiber (RoF) system for protocol-independent wired and/or wireless communication
IT1398025B1 (en) 2010-02-12 2013-02-07 Andrew Llc DISTRIBUTED ANTENNA SYSTEM FOR MIMO COMMUNICATIONS.
US8275265B2 (en) 2010-02-15 2012-09-25 Corning Cable Systems Llc Dynamic cell bonding (DCB) for radio-over-fiber (RoF)-based networks and communication systems and related methods
AU2011232897B2 (en) 2010-03-31 2015-11-05 Corning Optical Communications LLC Localization services in optical fiber-based distributed communications components and systems, and related methods
US9525488B2 (en) 2010-05-02 2016-12-20 Corning Optical Communications LLC Digital data services and/or power distribution in optical fiber-based distributed communications systems providing digital data and radio frequency (RF) communications services, and related components and methods
US20110268446A1 (en) 2010-05-02 2011-11-03 Cune William P Providing digital data services in optical fiber-based distributed radio frequency (rf) communications systems, and related components and methods
US20140126914A1 (en) * 2010-07-09 2014-05-08 Corning Cable Systems Llc Optical fiber-based distributed radio frequency (rf) antenna systems supporting multiple-input, multiple-output (mimo) configurations, and related components and methods
US8472579B2 (en) 2010-07-28 2013-06-25 Adc Telecommunications, Inc. Distributed digital reference clock
US8570914B2 (en) 2010-08-09 2013-10-29 Corning Cable Systems Llc Apparatuses, systems, and methods for determining location of a mobile device(s) in a distributed antenna system(s)
CN103119865A (en) 2010-08-16 2013-05-22 康宁光缆系统有限责任公司 Remote antenna clusters and related systems, components, and methods supporting digital data signal propagation between remote antenna units
EP4319477A3 (en) * 2010-08-17 2024-04-17 Dali Systems Co. Ltd. Daisy-chained ring of remote units for a distributed antenna system
US8682338B2 (en) 2010-09-14 2014-03-25 Dali Systems Co., Ltd. Remotely reconfigurable distributed antenna system and methods
CN103180844B (en) 2010-08-17 2017-10-03 大力系统有限公司 Neutral host architecture for distributing antenna system
KR102163548B1 (en) 2010-10-01 2020-10-12 콤스코프 테크놀로지스, 엘엘씨 Distributed antenna system for MIMO signals
US9252874B2 (en) 2010-10-13 2016-02-02 Ccs Technology, Inc Power management for remote antenna units in distributed antenna systems
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
WO2012115843A1 (en) 2011-02-21 2012-08-30 Corning Cable Systems Llc Providing digital data services as electrical signals and radio-frequency (rf) communications over optical fiber in distributed communications systems, and related components and methods
US9337879B2 (en) 2011-04-25 2016-05-10 Aviat U.S., Inc. Systems and methods for multi-channel transceiver communications
US8842788B2 (en) 2011-10-17 2014-09-23 Aviat U.S., Inc. Systems and methods for improved high capacity in wireless communication systems
EP2702710A4 (en) 2011-04-29 2014-10-29 Corning Cable Sys Llc Determining propagation delay of communications in distributed antenna systems, and related components, systems and methods
CN103609146B (en) 2011-04-29 2017-05-31 康宁光缆系统有限责任公司 For increasing the radio frequency in distributing antenna system（RF）The system of power, method and apparatus
IL214002A0 (en) * 2011-07-10 2011-08-31 Alvarion Ltd Method and system for managing a wireless network comprising a distributed antenna system (das)
BR112014000207A2 (en) * 2011-07-14 2017-06-13 Shenzhen Winhap Communications Inc system, device and method of transmitting multiple input and multiple output signals
EP2752044B1 (en) 2011-08-29 2016-07-20 CommScope Technologies LLC Configuring a distributed antenna system
US9276685B2 (en) 2011-10-14 2016-03-01 Qualcomm Incorporated Distributed antenna systems and methods of wireless communications for facilitating simulcasting and de-simulcasting of downlink transmissions
US8634323B2 (en) 2011-10-14 2014-01-21 Qualcomm Incorporated Apparatuses and methods for facilitating simulcasting and de-simulcasting with a plurality of base stations
US8688131B2 (en) * 2011-10-14 2014-04-01 Qualcomm Incorporated Apparatus and methods for facilitating simulcasting and de-simulcasting in a distributed antenna system
US9312941B2 (en) * 2011-10-14 2016-04-12 Qualcomm Incorporated Base stations and methods for facilitating dynamic simulcasting and de-simulcasting in a distributed antenna system
SG11201401543RA (en) 2011-10-17 2014-05-29 Aviat Networks Inc Systems and methods for signal frequency division in wireless communication systems
US9436857B2 (en) * 2012-01-16 2016-09-06 Hand Held Products, Inc. Encoded information reading system including RFID reading device having multiple antennas
US8699982B2 (en) * 2012-03-27 2014-04-15 Adc Telecommunications, Inc. Systems and methods for implementing a distributed antenna system in a radio frequency integrated circuit
EP2832012A1 (en) 2012-03-30 2015-02-04 Corning Optical Communications LLC Reducing location-dependent interference in distributed antenna systems operating in multiple-input, multiple-output (mimo) configuration, and related components, systems, and methods
WO2013158825A1 (en) * 2012-04-19 2013-10-24 Xg Technology, Inc. Mimo antenna design used in fading enviroments
US9781553B2 (en) 2012-04-24 2017-10-03 Corning Optical Communications LLC Location based services in a distributed communication system, and related components and methods
EP2842245A1 (en) 2012-04-25 2015-03-04 Corning Optical Communications LLC Distributed antenna system architectures
WO2013181247A1 (en) 2012-05-29 2013-12-05 Corning Cable Systems Llc Ultrasound-based localization of client devices with inertial navigation supplement in distributed communication systems and related devices and methods
WO2014024192A1 (en) 2012-08-07 2014-02-13 Corning Mobile Access Ltd. Distribution of time-division multiplexed (tdm) management services in a distributed antenna system, and related components, systems, and methods
US9113364B2 (en) 2012-08-09 2015-08-18 Microsoft Technology Licensing, Llc Extended access point
DE202013012858U1 (en) 2012-08-09 2021-05-07 Axel Wireless Ltd. Capacity-centered digital distributed antenna system
US9455784B2 (en) 2012-10-31 2016-09-27 Corning Optical Communications Wireless Ltd Deployable wireless infrastructures and methods of deploying wireless infrastructures
CN105308876B (en) 2012-11-29 2018-06-22 康宁光电通信有限责任公司 Remote unit antennas in distributing antenna system combines
US9647758B2 (en) 2012-11-30 2017-05-09 Corning Optical Communications Wireless Ltd Cabling connectivity monitoring and verification
US9158864B2 (en) 2012-12-21 2015-10-13 Corning Optical Communications Wireless Ltd Systems, methods, and devices for documenting a location of installed equipment
NL2010287C2 (en) 2013-02-12 2014-08-13 Lely Patent Nv Method and system for localising and displaying positions of autonomously mobile objects.
EP3484060B1 (en) 2013-02-22 2021-04-07 ADC Telecommunications, Inc. Master reference for base station network interface sourced from distributed antenna system
EP3008828B1 (en) 2013-06-12 2017-08-09 Corning Optical Communications Wireless Ltd. Time-division duplexing (tdd) in distributed communications systems, including distributed antenna systems (dass)
WO2014199384A1 (en) 2013-06-12 2014-12-18 Corning Optical Communications Wireless, Ltd. Voltage controlled optical directional coupler
US9247543B2 (en) 2013-07-23 2016-01-26 Corning Optical Communications Wireless Ltd Monitoring non-supported wireless spectrum within coverage areas of distributed antenna systems (DASs)
US9661781B2 (en) 2013-07-31 2017-05-23 Corning Optical Communications Wireless Ltd Remote units for distributed communication systems and related installation methods and apparatuses
US9825689B2 (en) * 2013-08-12 2017-11-21 Samsung Electronics Co., Ltd Unified device for adjacent and non-adjacent channels for processing physical layer protocol data units
US9385810B2 (en) 2013-09-30 2016-07-05 Corning Optical Communications Wireless Ltd Connection mapping in distributed communication systems
US9077321B2 (en) 2013-10-23 2015-07-07 Corning Optical Communications Wireless Ltd. Variable amplitude signal generators for generating a sinusoidal signal having limited direct current (DC) offset variation, and related devices, systems, and methods
EP3064031B1 (en) 2013-10-30 2019-05-08 Andrew Wireless Systems GmbH Switching sub-system for distributed antenna systems using time division duplexing
US9178635B2 (en) 2014-01-03 2015-11-03 Corning Optical Communications Wireless Ltd Separation of communication signal sub-bands in distributed antenna systems (DASs) to reduce interference
US9680556B2 (en) 2014-02-13 2017-06-13 Commscope Technologies Llc Narrowband signal transport sub-system for distributed antenna system
US9775123B2 (en) 2014-03-28 2017-09-26 Corning Optical Communications Wireless Ltd. Individualized gain control of uplink paths in remote units in a distributed antenna system (DAS) based on individual remote unit contribution to combined uplink power
US9357551B2 (en) 2014-05-30 2016-05-31 Corning Optical Communications Wireless Ltd Systems and methods for simultaneous sampling of serial digital data streams from multiple analog-to-digital converters (ADCS), including in distributed antenna systems
US9525472B2 (en) 2014-07-30 2016-12-20 Corning Incorporated Reducing location-dependent destructive interference in distributed antenna systems (DASS) operating in multiple-input, multiple-output (MIMO) configuration, and related components, systems, and methods
US10447458B2 (en) 2014-08-13 2019-10-15 Skyworks Solutions, Inc. Radio-frequency front-end architecture for carrier aggregation of cellular bands
EP3183864A4 (en) 2014-08-22 2018-04-11 Commscope Technologies LLC Distributed antenna system to transport first cellular rf band concurrently with ethernet or second cellular rf band
EP3183863B1 (en) 2014-08-22 2022-09-28 Commscope Technologies LLC Distributed antenna system with adaptive allocation between digitized rf data and ip formatted data
US9730228B2 (en) 2014-08-29 2017-08-08 Corning Optical Communications Wireless Ltd Individualized gain control of remote uplink band paths in a remote unit in a distributed antenna system (DAS), based on combined uplink power level in the remote unit
WO2016049002A1 (en) 2014-09-23 2016-03-31 Axell Wireless Ltd. Automatic mapping and handling pim and other uplink interferences in digital distributed antenna systems
US9602210B2 (en) 2014-09-24 2017-03-21 Corning Optical Communications Wireless Ltd Flexible head-end chassis supporting automatic identification and interconnection of radio interface modules and optical interface modules in an optical fiber-based distributed antenna system (DAS)
US10659163B2 (en) 2014-09-25 2020-05-19 Corning Optical Communications LLC Supporting analog remote antenna units (RAUs) in digital distributed antenna systems (DASs) using analog RAU digital adaptors
US9420542B2 (en) 2014-09-25 2016-08-16 Corning Optical Communications Wireless Ltd System-wide uplink band gain control in a distributed antenna system (DAS), based on per band gain control of remote uplink paths in remote units
WO2016071902A1 (en) 2014-11-03 2016-05-12 Corning Optical Communications Wireless Ltd. Multi-band monopole planar antennas configured to facilitate improved radio frequency (rf) isolation in multiple-input multiple-output (mimo) antenna arrangement
WO2016075696A1 (en) 2014-11-13 2016-05-19 Corning Optical Communications Wireless Ltd. Analog distributed antenna systems (dass) supporting distribution of digital communications signals interfaced from a digital signal source and analog radio frequency (rf) communications signals
US9729267B2 (en) 2014-12-11 2017-08-08 Corning Optical Communications Wireless Ltd Multiplexing two separate optical links with the same wavelength using asymmetric combining and splitting
WO2016098111A1 (en) 2014-12-18 2016-06-23 Corning Optical Communications Wireless Ltd. Digital- analog interface modules (da!ms) for flexibly.distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (dass)
EP3235336A1 (en) 2014-12-18 2017-10-25 Corning Optical Communications Wireless Ltd. Digital interface modules (dims) for flexibly distributing digital and/or analog communications signals in wide-area analog distributed antenna systems (dass)
AU2015371287A1 (en) 2014-12-23 2017-06-08 Axell Wireless Ltd. Harmonizing noise aggregation and noise management in distributed antenna system
KR20160081122A (en) * 2014-12-30 2016-07-08 주식회사 쏠리드 Distributed antenna system for multiple-input multiple-output signal
EP3588889B1 (en) * 2015-02-11 2021-03-10 Commscope Technologies LLC Channel identification in a mimo telecommunications system
US20160249365A1 (en) 2015-02-19 2016-08-25 Corning Optical Communications Wireless Ltd. Offsetting unwanted downlink interference signals in an uplink path in a distributed antenna system (das)
US10396865B2 (en) * 2015-03-19 2019-08-27 Commscope Technologies Llc Spectral analysis signal identification
US9681313B2 (en) 2015-04-15 2017-06-13 Corning Optical Communications Wireless Ltd Optimizing remote antenna unit performance using an alternative data channel
US9948349B2 (en) 2015-07-17 2018-04-17 Corning Optical Communications Wireless Ltd IOT automation and data collection system
US10560214B2 (en) 2015-09-28 2020-02-11 Corning Optical Communications LLC Downlink and uplink communication path switching in a time-division duplex (TDD) distributed antenna system (DAS)
US10499269B2 (en) 2015-11-12 2019-12-03 Commscope Technologies Llc Systems and methods for assigning controlled nodes to channel interfaces of a controller
CN106851550B (en) * 2015-12-04 2020-02-14 华为技术有限公司 Method for positioning terminal and baseband unit
US9648580B1 (en) 2016-03-23 2017-05-09 Corning Optical Communications Wireless Ltd Identifying remote units in a wireless distribution system (WDS) based on assigned unique temporal delay patterns
US10236924B2 (en) 2016-03-31 2019-03-19 Corning Optical Communications Wireless Ltd Reducing out-of-channel noise in a wireless distribution system (WDS)
KR101806173B1 (en) * 2016-04-29 2017-12-07 주식회사 케이엠더블유 Distributed Antenna System supporting MIMO services
US10735095B1 (en) * 2019-03-04 2020-08-04 Advanced Rf Technologies, Inc. Distributed antenna system for massive MIMO signals with one fiber optic cable
US10945308B2 (en) * 2019-04-29 2021-03-09 Rohde & Schwarz Gmbh & Co. Kg Radio system for radio communication
US11411778B2 (en) * 2019-07-12 2022-08-09 XCOM Labs, Inc. Time-division duplex multiple input multiple output calibration

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040165568A1 (en) * 2003-02-24 2004-08-26 Eliahu Weinstein Single antenna space-time fast modem system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6870515B2 (en) * 2000-12-28 2005-03-22 Nortel Networks Limited MIMO wireless communication system
GB0222555D0 (en) * 2002-09-28 2002-11-06 Koninkl Philips Electronics Nv Packet data transmission system
US20060063494A1 (en) * 2004-10-04 2006-03-23 Xiangdon Zhang Remote front-end for a multi-antenna station
US7650173B2 (en) * 2005-10-06 2010-01-19 Flextronics Ap, Llc Combined antenna module with single output
JP4852984B2 (en) * 2005-11-09 2012-01-11 株式会社日立製作所 Multi-channel transmission system using multiple base stations
US8452333B2 (en) * 2005-12-12 2013-05-28 Apple Inc. Feeder cable reduction
US8155597B2 (en) * 2006-01-10 2012-04-10 Marvell World Trade Ltd. Transmission scheduling for receiver feedback
WO2007086785A1 (en) * 2006-01-25 2007-08-02 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for reducing combiner loss in a multi-sector, omni-base station
CA2650256A1 (en) * 2006-05-19 2007-11-29 Qualcomm Incorporated Wireless repeater with master/slave configuration
WO2008099383A2 (en) * 2007-02-12 2008-08-21 Mobileaccess Networks Ltd. Mimo-adapted distributed antenna system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040165568A1 (en) * 2003-02-24 2004-08-26 Eliahu Weinstein Single antenna space-time fast modem system

Also Published As

Publication number Publication date
WO2008099383A2 (en) 2008-08-21
US20090154621A1 (en) 2009-06-18
US20080192855A1 (en) 2008-08-14
US7483504B2 (en) 2009-01-27
US7822148B2 (en) 2010-10-26

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