AR056796A1 - Metodos para actualizar vectores de simbolo ofdm recibidos en una senal de radio en canal de banda am, metodo para estimar varianzas de la informacion de simbolo de entrenamiento recibida y receptores par senales de radio en canal de banda am y vectores de simbolo ofdm - Google Patents

Metodos para actualizar vectores de simbolo ofdm recibidos en una senal de radio en canal de banda am, metodo para estimar varianzas de la informacion de simbolo de entrenamiento recibida y receptores par senales de radio en canal de banda am y vectores de simbolo ofdm

Info

Publication number
AR056796A1
AR056796A1 ARP060104915A ARP060104915A AR056796A1 AR 056796 A1 AR056796 A1 AR 056796A1 AR P060104915 A ARP060104915 A AR P060104915A AR P060104915 A ARP060104915 A AR P060104915A AR 056796 A1 AR056796 A1 AR 056796A1
Authority
AR
Argentina
Prior art keywords
banda
radio signal
vectors
received
ofdm symbol
Prior art date
Application number
ARP060104915A
Other languages
English (en)
Original Assignee
Ibiquity Digital 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 Ibiquity Digital Corp filed Critical Ibiquity Digital Corp
Publication of AR056796A1 publication Critical patent/AR056796A1/es

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/30Arrangements for simultaneous broadcast of plural pieces of information by a single channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H40/00Arrangements specially adapted for receiving broadcast information
    • H04H40/18Arrangements characterised by circuits or components specially adapted for receiving
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L25/03159Arrangements for removing intersymbol interference operating in the frequency domain
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/01Equalisers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2647Arrangements specific to the receiver only
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/02Channels characterised by the type of signal
    • H04L5/023Multiplexing of multicarrier modulation signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L2025/0335Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375Passband transmission
    • H04L2025/03414Multicarrier
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006Arrangements for removing intersymbol interference
    • H04L2025/03433Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439Fixed structures

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)

Abstract

Se provee un método para ecualizar vectores de símbolo OFDM recibidos en una senal de radio en canal en banda AM, que incluye un portador principal y un primer y segundo sub-portadores modulado BPSK. El método comprende los pasos de: computar una senal de magnitud BPSK; filtrar la senal de magnitud BPSK; filtrar las muestras complejas recibidas en el portador principal; usar la senal de magnitud BPSK filtrada y las muestras complejas filtradas recibidas en el portador principal para computar una pluralidad de coeficientes de ecualizacion de desvanecimiento planos; y multiplicar los vectores de símbolo OFDM por lo coeficientes de ecualizacion de desvanecimiento plano. También se provee un receptor que incluye un ecualizador, el cual opera de acuerdo con el método.
ARP060104915A 2005-11-14 2006-11-09 Metodos para actualizar vectores de simbolo ofdm recibidos en una senal de radio en canal de banda am, metodo para estimar varianzas de la informacion de simbolo de entrenamiento recibida y receptores par senales de radio en canal de banda am y vectores de simbolo ofdm AR056796A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/272,978 US7697620B2 (en) 2005-11-14 2005-11-14 Equalizer for AM in-band on-channel radio receivers

Publications (1)

Publication Number Publication Date
AR056796A1 true AR056796A1 (es) 2007-10-24

Family

ID=37913586

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP060104915A AR056796A1 (es) 2005-11-14 2006-11-09 Metodos para actualizar vectores de simbolo ofdm recibidos en una senal de radio en canal de banda am, metodo para estimar varianzas de la informacion de simbolo de entrenamiento recibida y receptores par senales de radio en canal de banda am y vectores de simbolo ofdm

Country Status (14)

Country Link
US (3) US7697620B2 (es)
EP (1) EP1949587A2 (es)
JP (1) JP2009516430A (es)
KR (1) KR101229150B1 (es)
CN (3) CN101310494B (es)
AR (1) AR056796A1 (es)
AU (1) AU2006315619A1 (es)
BR (1) BRPI0618553A2 (es)
CA (1) CA2628166C (es)
HK (1) HK1124973A1 (es)
MY (1) MY149578A (es)
RU (1) RU2008123827A (es)
TW (1) TWI406542B (es)
WO (1) WO2007059028A2 (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2005683A1 (en) * 2006-03-16 2008-12-24 Intel Corporation (INTEL) Method for channel estimation using recursive filtering and multicarrier receiver with interference-aware demodulation
US8081695B2 (en) * 2007-03-09 2011-12-20 Qualcomm, Incorporated Channel estimation using frequency smoothing
US8064550B2 (en) 2007-03-09 2011-11-22 Qualcomm, Incorporated Quadrature imbalance estimation using unbiased training sequences
US8428175B2 (en) * 2007-03-09 2013-04-23 Qualcomm Incorporated Quadrature modulation rotating training sequence
US8290083B2 (en) * 2007-03-09 2012-10-16 Qualcomm Incorporated Quadrature imbalance mitigation using unbiased training sequences
JP5114315B2 (ja) * 2008-06-27 2013-01-09 京楽産業.株式会社 多重伝送装置及び多重伝送方法
US8743823B2 (en) * 2009-02-12 2014-06-03 Qualcomm Incorporated Transmission with collision detection and mitigation for wireless communication
US8842750B2 (en) * 2010-12-21 2014-09-23 Intel Corporation Channel estimation for DVB-T2 demodulation using an adaptive prediction technique
US8660214B1 (en) * 2012-12-09 2014-02-25 Phuong Thu-Minh Huynh Quadrature bandpass-sampling OFDM receiver
CN103501211A (zh) * 2013-10-08 2014-01-08 苏州东奇信息科技股份有限公司 一种兼容中波模拟调幅广播的复合调制系统
US9143364B2 (en) * 2013-10-10 2015-09-22 Broadcom Corporation IQ imbalance estimation using broadcast signals
US10436059B2 (en) * 2014-05-12 2019-10-08 Simmonds Precision Products, Inc. Rotating stall detection through ratiometric measure of the sub-synchronous band spectrum
CN112134605B (zh) * 2015-11-13 2024-04-09 华为技术有限公司 数据传输方法和装置
US10171280B2 (en) * 2016-08-01 2019-01-01 Allen LeRoy Limberg Double-sideband COFDM signal receivers that demodulate unfolded frequency spectrum
CN107895079B (zh) * 2017-11-14 2021-04-27 东南大学 全频带超宽带天线电路模型
CN112865822A (zh) * 2019-11-28 2021-05-28 苏州东奇信息科技股份有限公司 一种用于模数混合调幅广播接收机的抗音频干扰方法

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69332237T2 (de) * 1992-06-18 2003-04-17 Oki Electric Industry Co., Ltd. Vorrichtung und verfahren zur maximal wahrscheinlichkeitsfolgeschätzung
US5588022A (en) 1994-03-07 1996-12-24 Xetron Corp. Method and apparatus for AM compatible digital broadcasting
JP3351163B2 (ja) * 1994-07-27 2002-11-25 株式会社日立製作所 情報記録再生装置及び信号処理回路
WO1996021291A1 (en) 1995-01-03 1996-07-11 Northrop Grumman Corporation Method and apparatus for improving am compatible digital broadcast analog fidelity
US5559830A (en) 1995-01-23 1996-09-24 Xetron Corp. Equalization system for AM compatible digital receiver
DK1010168T3 (da) * 1997-02-21 2001-12-27 Lernout & Hauspie Speechprod Accelereret eliminering af foldningsstøj
US6295317B1 (en) 1998-10-02 2001-09-25 Usa Digital Radio Partners, Lp Method and apparatus for demodulating and equalizing an AM compatible digital audio broadcast signal
US6292511B1 (en) * 1998-10-02 2001-09-18 Usa Digital Radio Partners, Lp Method for equalization of complementary carriers in an AM compatible digital audio broadcast system
US6549544B1 (en) 1999-11-10 2003-04-15 Ibiquity Digital Corporation Method and apparatus for transmission and reception of FM in-band on-channel digital audio broadcasting
KR20020020960A (ko) * 2000-06-12 2002-03-16 요트.게.아. 롤페즈 채널 등화기
JP2002043990A (ja) * 2000-07-21 2002-02-08 Mitsubishi Electric Corp 無線通信用受信装置
US6904100B1 (en) * 2000-09-29 2005-06-07 Charles Christopher Romaniuk Pulse controlled phase modulator
US6985523B2 (en) * 2001-01-10 2006-01-10 Hughes Electronics Corp. Method and system for adaptive equalization for receivers in a wide-band satellite communications system
US6612149B2 (en) 2001-02-15 2003-09-02 Abbott Laboratories Method and apparatus for calibration of instruments that monitor the concentration of a sterilant in a system
US7001340B2 (en) 2001-03-16 2006-02-21 Chung-Yuan Lin Assessment of concentration of inhalational compounds in the brain
EP1251463A1 (en) * 2001-04-20 2002-10-23 BTS Media Solutions GmbH Arrangement for processing video signals
US7103112B2 (en) * 2001-12-04 2006-09-05 Conexant, Inc. Transmit frequency domain equalizer
EP1355467B8 (en) * 2002-04-16 2005-12-07 Sony Deutschland Gmbh Orthogonal frequency division multiplexing (OFDM) system with channel transfer function prediction
US7072693B2 (en) * 2002-08-05 2006-07-04 Calamp Corp. Wireless communications structures and methods utilizing frequency domain spatial processing
JP2005536103A (ja) * 2002-08-13 2005-11-24 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 広帯域ofdmシステムにおけるジョイントチャネルおよび雑音変動推定
MXPA05003147A (es) * 2002-09-27 2005-06-08 Ibiquity Digital Corp Metodo y aparato para intercalar bitios de senal en una radiodifusion de audio digital.
US7272608B2 (en) * 2002-11-27 2007-09-18 Zyvex Labs, Llc Isosurface extraction into splat hierarchy
US6898249B2 (en) 2002-12-17 2005-05-24 Ibiquity Digital Corporation Method and apparatus for AM digital audio broadcasting with amplitude scaled tertiary subcarriers
US7277493B2 (en) 2003-01-28 2007-10-02 Agere Systems Inc. Equalization in orthogonal frequency domain multiplexing
DE10303475B3 (de) * 2003-01-29 2004-10-07 Infineon Technologies Ag Maximum-Likelihood-Abschätzung der Kanalkoeffizienten und des DC-Offset in einem digitalen Basisbandsignal eines Funkempfängers mit dem SAGE-Algorithmus
FR2851098B1 (fr) * 2003-02-10 2006-08-25 Nortel Networks Ltd Procede de traitement d'un signal par un recepteur radio et recepteur radio pour la mise en oeuvre du procede
US7251273B2 (en) 2003-02-19 2007-07-31 Advanced Micro Devices, Inc. Minimum equalization error based channel estimator
US7127008B2 (en) * 2003-02-24 2006-10-24 Ibiquity Digital Corporation Coherent AM demodulator using a weighted LSB/USB sum for interference mitigation
FR2853417B1 (fr) * 2003-04-01 2006-07-14 Thales Sa Procede de traitement de signaux, et sonar actif le mettant en oeuvre
US20050074037A1 (en) * 2003-10-06 2005-04-07 Robin Rickard Optical sub-carrier multiplexed transmission
US7305056B2 (en) * 2003-11-18 2007-12-04 Ibiquity Digital Corporation Coherent tracking for FM in-band on-channel receivers
US20050141657A1 (en) * 2003-12-30 2005-06-30 Maltsev Alexander A. Adaptive channel equalizer for wireless system
US7340010B2 (en) * 2004-01-26 2008-03-04 Ibiquity Digital Corporation Forward error correction coding for hybrid AM in-band on-channel digital audio broadcasting systems
KR100636314B1 (ko) * 2004-07-14 2006-10-18 삼성전자주식회사 다중 안테나 시스템의 신호 전송 장치 및 방법
US7809342B2 (en) * 2005-02-08 2010-10-05 E-Radio Usa, Inc. Systems and methods for providing product information over a carrier wave
US20060209993A1 (en) * 2005-02-18 2006-09-21 Wei Lu Demodulator and receiver for pre-coded partial response signals
US20070021085A1 (en) * 2005-07-25 2007-01-25 Ibiquity Digital Corporation Adaptive Beamforming For AM Radio

Also Published As

Publication number Publication date
WO2007059028A3 (en) 2007-09-20
CA2628166A1 (en) 2007-05-24
RU2008123827A (ru) 2009-12-27
EP1949587A2 (en) 2008-07-30
CN101310494A (zh) 2008-11-19
CN104104632A (zh) 2014-10-15
CN102098251A (zh) 2011-06-15
HK1124973A1 (en) 2009-07-24
WO2007059028A2 (en) 2007-05-24
BRPI0618553A2 (pt) 2011-09-06
KR101229150B1 (ko) 2013-02-01
CN104104632B (zh) 2017-08-22
US7697620B2 (en) 2010-04-13
CA2628166C (en) 2014-09-16
TWI406542B (zh) 2013-08-21
CN102098251B (zh) 2014-08-27
AU2006315619A1 (en) 2007-05-24
MY149578A (en) 2013-09-13
US20100215090A1 (en) 2010-08-26
US8442170B2 (en) 2013-05-14
JP2009516430A (ja) 2009-04-16
KR20080072054A (ko) 2008-08-05
US8923378B2 (en) 2014-12-30
US20070110020A1 (en) 2007-05-17
US20130202023A1 (en) 2013-08-08
TW200729863A (en) 2007-08-01
CN101310494B (zh) 2011-07-20

Similar Documents

Publication Publication Date Title
AR056796A1 (es) Metodos para actualizar vectores de simbolo ofdm recibidos en una senal de radio en canal de banda am, metodo para estimar varianzas de la informacion de simbolo de entrenamiento recibida y receptores par senales de radio en canal de banda am y vectores de simbolo ofdm
BRPI0716389A2 (pt) estimaÇço de canal ofdm
TW200704046A (en) Timing corrections in a multi carrier system and propagation to a channel estimation time filter
WO2010074485A3 (en) Mehtod and apparatus of transmitting control information
ECSP077399A (es) Estimación de la variación del ruido en las comunicaciones inalámbricas por combinación de diversidad y escalamiento de logaritmo de verosimilitud
WO2007037637A3 (en) A method and apparatus for channel estimation
WO2009131396A3 (en) Method of communicating according to time division duplex
TW200709627A (en) Method and apparatus for estimating signal-to-noise ratio, noise power, and signal power
DK2157752T3 (da) System og fremgangsmåder til udvælgelse, sending og modtagelse af træningssekvenser
WO2010046748A3 (en) Using the same multiplexed radio resource for pilot and information signals
WO2007137281A3 (en) Phase correction for ofdm and mimo transmissions
EP1650921A3 (en) Frequency correlation based synchronization for coherent ofdm receiver
TW200742318A (en) Method of transmitting pilot for multiple carrier system
WO2008118882A3 (en) Method and apparatus for determining broadcast messages in wireless signals
NO20053493L (no) Generalisert totrinns dataestimering
AR044663A1 (es) Metodo y aparato para estimar desplazamiento de frecuencia de portadora y tasa de desvanecimiento utilizando modelacion de canal autoregresivo
TW200709589A (en) Method and system for equalizing received signal in communications systems
AR072410A1 (es) Multiplexacion mac para mimo de enlace ascendente
WO2007022362A3 (en) Frame synchronization
WO2008149856A1 (ja) 変調装置、復調装置、および音響信号伝送方法
US9236981B2 (en) GFDM radio transmission using a pseudo circular preamble
WO2009114374A3 (en) I/q imbalance estimation using synchronization signals in lte systems
WO2009142407A3 (en) Mimo detection method and system based on channel correlation
TW200644530A (en) Frequency recovery apparatus and method for use in digital broadcast receiver
WO2008145337A3 (en) A method for interference estimation for orthogonal pilot patterns

Legal Events

Date Code Title Description
FG Grant, registration