IN2012DN00218A - - Google Patents
Info
- Publication number
- IN2012DN00218A IN2012DN00218A IN218DEN2012A IN2012DN00218A IN 2012DN00218 A IN2012DN00218 A IN 2012DN00218A IN 218DEN2012 A IN218DEN2012 A IN 218DEN2012A IN 2012DN00218 A IN2012DN00218 A IN 2012DN00218A
- Authority
- IN
- India
- Prior art keywords
- communications
- transmission channel
- signal
- unit
- receiver unit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/005—Reducing noise, e.g. humm, from the supply
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0226—Channel estimation using sounding signals sounding signals per se
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/26265—Arrangements for sidelobes suppression specially adapted to multicarrier systems, e.g. spectral precoding
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
-
- 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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
-
- 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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
-
- 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
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Electromagnetism (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Circuits Of Receivers In General (AREA)
- Transceivers (AREA)
- Mobile Radio Communication Systems (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Abstract
A communications system (100) includes a receiver unit (120, 420) connected with a transmission channel (105, 405, 505). The receiver unit (120, 420) determines a signal power of a first communications signal received over the transmission channel (105, 405, 505). A transmitter unit (110, 510) is connected with the transmission channel (105, 405, 505) and transmits a second communications signal, wherein a gain of the communications signal being output by the transmitter unit (110, 510) is controllable. A control unit (151, 551) controls the gain of the transmitter unit in response to the determined signal power. At the receiver unit (120, 420), detection of broadcast signal ingress during data communication is improved and methods for avoiding disturbances between coexisting communications systems may become more reliable. Different distances between successive training symbols (606) suitable for channel estimation may be provided in order to enhance the noise measurement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09009295 | 2009-07-16 | ||
PCT/EP2010/003981 WO2011006585A2 (en) | 2009-07-16 | 2010-07-01 | Communications system using adaptive frequency notching |
Publications (1)
Publication Number | Publication Date |
---|---|
IN2012DN00218A true IN2012DN00218A (en) | 2015-05-01 |
Family
ID=43243667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IN218DEN2012 IN2012DN00218A (en) | 2009-07-16 | 2010-07-01 |
Country Status (8)
Country | Link |
---|---|
US (2) | US9001919B2 (en) |
EP (1) | EP2454821B1 (en) |
KR (1) | KR101630488B1 (en) |
CN (1) | CN102474304B (en) |
BR (1) | BRPI1011889B1 (en) |
IN (1) | IN2012DN00218A (en) |
RU (1) | RU2542716C2 (en) |
WO (1) | WO2011006585A2 (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011050902A1 (en) | 2009-10-26 | 2011-05-05 | Sony Corporation | Device for use in a power line communication system, power line communication systems and power line communication method |
TWI521902B (en) | 2010-06-09 | 2016-02-11 | 新力股份有限公司 | Method for operating a plc system, plc modem device and plc system |
US20120027062A1 (en) * | 2010-07-28 | 2012-02-02 | Battelle Energy Alliance, Llc | Apparatuses and methods for setting an adaptive frequency band for power line communciation |
JP5696888B2 (en) * | 2011-03-10 | 2015-04-08 | ソニー株式会社 | Receiving device, receiving method, and program |
CN103460614B (en) * | 2011-04-26 | 2015-11-25 | 索尼公司 | Method, power line communications apparatus, the electric line communication system of electrical power for operation line communication system |
DE102011052734A1 (en) * | 2011-08-16 | 2013-02-21 | Devolo Ag | Method and device for detecting interferers during a transmission |
EP2645634A1 (en) * | 2012-03-27 | 2013-10-02 | Alcatel Lucent | PLC network topology extraction method using node-to-node transfer functions |
PL2744117T3 (en) * | 2012-12-13 | 2017-09-29 | Deutsche Telekom Ag | Method for reducing interference in a communication network |
TW201445939A (en) * | 2013-02-15 | 2014-12-01 | Sony Corp | OFDM encoding apparatus and method |
US9042432B2 (en) | 2013-03-14 | 2015-05-26 | Qualcomm Incorporated | Adaptive filter bank for dynamic notching in powerline communication |
US20150111583A1 (en) * | 2013-10-21 | 2015-04-23 | Qualcomm Incorporated | Communicating detection of controlled radio frequencies |
US20150318893A1 (en) * | 2014-04-30 | 2015-11-05 | Qualcomm Incorporated | Lowering transmission power responsive to broadcast radio transmissions |
US10090706B2 (en) * | 2014-09-30 | 2018-10-02 | Aclara Technologies Llc | VLF band sensor array for power distribution networks |
JP2017017639A (en) * | 2015-07-06 | 2017-01-19 | 富士通株式会社 | Radio transmission system and signal transmission method |
CN107645463B (en) * | 2016-07-22 | 2021-01-22 | 联发科技股份有限公司 | Detection method and detection device for detecting notch frequency band |
WO2019112588A1 (en) * | 2017-12-07 | 2019-06-13 | Halliburton Energy Services, Inc. | Digital baseband communication on power line downhole |
CN111565402B (en) * | 2020-03-24 | 2023-08-18 | 国网辽宁省电力有限公司朝阳供电公司 | Communication training system and training method for wireless communication |
RU2739940C1 (en) * | 2020-05-14 | 2020-12-30 | федеральное государственное бюджетное образовательное учреждение высшего образования «Томский государственный университет систем управления и радиоэлектроники» | Adaptive modulation method for communication systems using orthogonal frequency multiplexing signals |
KR102511557B1 (en) * | 2021-09-03 | 2023-03-16 | 국방과학연구소 | Spectrum channelization-based real-time signal generator and method thereof |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
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SU1059679A1 (en) * | 1982-02-04 | 1983-12-07 | Предприятие П/Я М-5632 | Radio link with power control |
SU1524188A1 (en) * | 1987-07-13 | 1989-11-23 | Военная Краснознаменная академия связи им.С.М.Буденного | Method of controlling transmitter radiation power |
US5852630A (en) * | 1997-07-17 | 1998-12-22 | Globespan Semiconductor, Inc. | Method and apparatus for a RADSL transceiver warm start activation procedure with precoding |
US6426983B1 (en) * | 1998-09-14 | 2002-07-30 | Terayon Communication Systems, Inc. | Method and apparatus of using a bank of filters for excision of narrow band interference signal from CDMA signal |
KR20010087690A (en) | 2000-03-08 | 2001-09-21 | 정진형 | Wireless ear phone systme |
US6542029B1 (en) * | 2000-10-11 | 2003-04-01 | Skyworks Solutions, Inc. | Variable-slope variable-gain amplifier |
US6993291B2 (en) * | 2001-10-11 | 2006-01-31 | Nokia Corporation | Method and apparatus for continuously controlling the dynamic range from an analog-to-digital converter |
US7212586B2 (en) * | 2002-01-18 | 2007-05-01 | Broadcom Corporation | Direct conversion RF transceiver for wireless communications |
US20060217096A1 (en) | 2003-03-13 | 2006-09-28 | David Le Goff | Testing apparatus for digital telecommunication |
KR100603561B1 (en) | 2004-04-16 | 2006-07-24 | 삼성전자주식회사 | System of wireless local area network based on transmit power control and method thereof |
JP4754268B2 (en) * | 2004-05-27 | 2011-08-24 | パナソニック株式会社 | COMMUNICATION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD |
CA2582957C (en) * | 2004-10-11 | 2013-09-03 | 2Wire Inc. | Periodic impulse noise mitigation in a dsl system |
JP4444294B2 (en) * | 2004-12-14 | 2010-03-31 | 富士通株式会社 | Wireless communication apparatus and communication method |
EP1835628B1 (en) | 2005-01-06 | 2012-03-28 | Murata Manufacturing Co., Ltd. | Wireless receiver and wireless transmitter |
EP1718019B1 (en) | 2005-04-29 | 2017-07-19 | Sony Deutschland GmbH | Equalising structure and method with maximum likelihood detection |
US7783260B2 (en) * | 2006-04-27 | 2010-08-24 | Crestcom, Inc. | Method and apparatus for adaptively controlling signals |
TW200906672A (en) | 2007-02-23 | 2009-02-16 | Gustav Magenwirth Gmbh & Amo Co Kg | Quick-release hub axle |
JP5448359B2 (en) * | 2007-05-30 | 2014-03-19 | パナソニック株式会社 | Power line communication method, power line communication apparatus, and power line communication system |
EP2020758A1 (en) | 2007-08-01 | 2009-02-04 | Sony Corporation | Method for transmitting a signal over a power line channel and power line communication modem |
GB0725110D0 (en) | 2007-12-21 | 2008-01-30 | Wolfson Microelectronics Plc | Gain control based on noise level |
JP5151771B2 (en) * | 2008-07-28 | 2013-02-27 | 富士通株式会社 | Signal transmission device and signal transmission device control method |
-
2010
- 2010-07-01 KR KR1020127000341A patent/KR101630488B1/en active IP Right Grant
- 2010-07-01 US US13/383,089 patent/US9001919B2/en active Active
- 2010-07-01 WO PCT/EP2010/003981 patent/WO2011006585A2/en active Application Filing
- 2010-07-01 BR BRPI1011889-6A patent/BRPI1011889B1/en not_active IP Right Cessation
- 2010-07-01 EP EP10776079.5A patent/EP2454821B1/en not_active Not-in-force
- 2010-07-01 IN IN218DEN2012 patent/IN2012DN00218A/en unknown
- 2010-07-01 CN CN201080031044.0A patent/CN102474304B/en not_active Expired - Fee Related
- 2010-07-01 RU RU2012101261/07A patent/RU2542716C2/en active
-
2015
- 2015-02-27 US US14/633,705 patent/US9356708B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR101630488B1 (en) | 2016-06-14 |
EP2454821B1 (en) | 2018-05-16 |
RU2542716C2 (en) | 2015-02-27 |
BRPI1011889B1 (en) | 2021-02-09 |
RU2012101261A (en) | 2013-08-27 |
CN102474304B (en) | 2014-11-12 |
WO2011006585A3 (en) | 2011-04-14 |
US9356708B2 (en) | 2016-05-31 |
US20120147938A1 (en) | 2012-06-14 |
CN102474304A (en) | 2012-05-23 |
CN104320159A (en) | 2015-01-28 |
KR20120033325A (en) | 2012-04-06 |
US20150180589A1 (en) | 2015-06-25 |
WO2011006585A2 (en) | 2011-01-20 |
BRPI1011889A2 (en) | 2016-04-12 |
EP2454821A2 (en) | 2012-05-23 |
US9001919B2 (en) | 2015-04-07 |
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