MX2010008281A - Calculo de error de frecuencia. - Google Patents

Calculo de error de frecuencia.

Info

Publication number
MX2010008281A
MX2010008281A MX2010008281A MX2010008281A MX2010008281A MX 2010008281 A MX2010008281 A MX 2010008281A MX 2010008281 A MX2010008281 A MX 2010008281A MX 2010008281 A MX2010008281 A MX 2010008281A MX 2010008281 A MX2010008281 A MX 2010008281A
Authority
MX
Mexico
Prior art keywords
frequency error
estimation
frequency
result
pilot
Prior art date
Application number
MX2010008281A
Other languages
English (en)
Inventor
Ma Jun
Roberto Rimini
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of MX2010008281A publication Critical patent/MX2010008281A/es

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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2657—Carrier synchronisation
    • 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
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2671—Time domain
    • 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
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Optical Communication System (AREA)
  • Radio Transmission System (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

Los aspectos se refieren al cálculo y rastreo de frecuencia. La información de frecuencia se extrae con base en una observación de un solo símbolo que lleva tonos de piloto, el cual puede estar en cualquier ubicación del ancho de banda. Específicamente, la información de error de frecuencia se extrae después de seleccionar el tono de piloto asignado a un usuario específico, transformar el tono de piloto seleccionado en una señal piloto en el dominio del tiempo, correlacionarla con un conjugado complejo de la señal piloto, proyectar el resultado a la mitad superior y a la mitad inferior del círculo unitario multiplicando el resultado con e y e respectivamente y calcular la diferencia del cuadrado de la magnitud de la suma vectorial resultante de cada mitad como el cálculo de error de frecuencia. El error de frecuencia puede corregirse con base en el cálculo. Además, los aspectos descritos pueden aplicarse a ambientes de trayectoria múltiple.
MX2010008281A 2008-02-01 2009-01-30 Calculo de error de frecuencia. MX2010008281A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US2564108P 2008-02-01 2008-02-01
US12/188,619 US8509208B2 (en) 2008-02-01 2008-08-08 Frequency error estimation
PCT/US2009/032533 WO2009099913A1 (en) 2008-02-01 2009-01-30 Frequency error estimation

Publications (1)

Publication Number Publication Date
MX2010008281A true MX2010008281A (es) 2010-08-31

Family

ID=40931631

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2010008281A MX2010008281A (es) 2008-02-01 2009-01-30 Calculo de error de frecuencia.

Country Status (13)

Country Link
US (1) US8509208B2 (es)
EP (1) EP2243264A1 (es)
JP (1) JP2011514721A (es)
KR (1) KR101126173B1 (es)
CN (1) CN101933302A (es)
AU (1) AU2009210457B2 (es)
CA (1) CA2710873A1 (es)
IL (1) IL206680A0 (es)
MX (1) MX2010008281A (es)
RU (1) RU2444854C1 (es)
TW (1) TWI413386B (es)
UA (1) UA99333C2 (es)
WO (1) WO2009099913A1 (es)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7917798B2 (en) 2005-10-04 2011-03-29 Hypres, Inc. Superconducting digital phase rotator
US8379601B2 (en) * 2007-08-16 2013-02-19 Motorola Mobility Llc Method and system for selective use of control channel element based implicit pointing
US9450727B2 (en) * 2009-02-03 2016-09-20 Google Technology Holdings LLC Physical layer acknowledgement signaling resource allocation in wireless communication systems
US8494070B2 (en) * 2010-05-12 2013-07-23 Qualcomm Incorporated Channel impulse response (CIR)-based and secondary synchronization channel (SSC)-based (frequency tracking loop (FTL)/time tracking loop (TTL)/channel estimation
US8238496B1 (en) * 2010-05-18 2012-08-07 Applied Micro Circuits Corporation Multiuser multiple-input multiple-output (MU-MIMO) channel estimation for multicarrier communications
US9083408B2 (en) 2010-08-31 2015-07-14 Qualcomm Incorporated Implicit and explicit channel sounding for beamforming
CN103234623B (zh) * 2012-08-20 2014-12-10 苏州大学 一种高精度的频率估计方法
US9071327B2 (en) * 2012-11-27 2015-06-30 Gilat Satellite Networks Ltd. Efficient frequency estimation
US9191255B2 (en) * 2013-03-14 2015-11-17 Spreadtrum Communications Usa Inc. Method and apparatus for compensating for frequency errors between base station and mobile station
US9526074B2 (en) 2013-03-15 2016-12-20 Google Technology Holdings LLC Methods and apparatus for determining a transmit antenna gain and a spatial mode of a device
WO2016138659A1 (zh) * 2015-03-05 2016-09-09 华为技术有限公司 相位偏差计算方法、接入点及站点
JP6686501B2 (ja) * 2016-02-15 2020-04-22 株式会社ジェイテクト 往復運動体の周波数検出装置及び揺動関節装置
US10506662B2 (en) * 2016-05-10 2019-12-10 Qualcomm Incorporated Internet-of-Things design for unlicensed spectrum
US10084563B2 (en) * 2016-11-18 2018-09-25 Qualcomm Incorporated Asymmetric heterogeneous waveform shaping in wireless communications
US10389572B2 (en) * 2017-06-23 2019-08-20 Integrated Device Technology, Inc. Circuits and systems for wideband quadrature signal generation
PL3751761T3 (pl) * 2018-02-08 2024-03-04 Ntt Docomo, Inc. Terminal użytkownika i sposób komunikacji bezprzewodowej
DE102020202890B3 (de) * 2020-03-06 2021-07-08 Continental Automotive Gmbh Verfahren und Kommunikationsvorrichtung zum Kompensieren von Doppler-Effekten in empfangenen drahtlosen Kommunikationssignalen
US11949493B2 (en) * 2021-12-20 2024-04-02 Hughes Network Systems, Llc Mobile terminal and methods of use

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6891792B1 (en) 1999-05-14 2005-05-10 At&T Corp. Method for estimating time and frequency offset in an OFDM system
US6922388B1 (en) 2000-02-11 2005-07-26 Lucent Technologies Inc. Signal construction, detection and estimation for uplink timing synchronization and access control in a multi-access wireless communication system
US20050251844A1 (en) 2001-02-02 2005-11-10 Massimiliano Martone Blind correlation for high precision ranging of coded OFDM signals
ES2188370B1 (es) 2001-05-21 2004-10-16 Diseño De Sistemas En Silicio, S.A. Procedimiento para la sincronizacion en el enlace descendente de multiples usuarios en un sistema de transmision punto a multipunto con modulacion ofdm.
US7123670B2 (en) 2001-09-24 2006-10-17 Atheros Communications, Inc. Fine frequency offset estimation and calculation and use to improve communication system performance
US7308063B2 (en) 2002-12-20 2007-12-11 Nokia Corporation Apparatus, and associated method, for effectuating post-FFT correction of fine frequency offset
CN1643867B (zh) 2003-06-22 2010-06-23 株式会社Ntt都科摩 用于估计信道的设备和方法
US7606138B2 (en) * 2003-09-29 2009-10-20 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Industry, Through The Communications Research Centre Canada Multi-symbol encapsulated OFDM system
US7746760B2 (en) 2004-01-08 2010-06-29 Qualcomm Incorporated Frequency error estimation and frame synchronization in an OFDM system
US8295266B2 (en) * 2006-10-25 2012-10-23 Lg Electronics Inc. Method for adjusting RACH transmission against frequency offset
EP3176975B1 (en) * 2007-08-08 2018-07-18 Telefonaktiebolaget LM Ericsson (publ) Multicarrier communication system employing explicit frequency hopping

Also Published As

Publication number Publication date
JP2011514721A (ja) 2011-05-06
KR101126173B1 (ko) 2012-03-23
AU2009210457A1 (en) 2009-08-13
CA2710873A1 (en) 2009-08-13
AU2009210457B2 (en) 2013-05-02
CN101933302A (zh) 2010-12-29
WO2009099913A1 (en) 2009-08-13
US20090196274A1 (en) 2009-08-06
TW200943856A (en) 2009-10-16
UA99333C2 (ru) 2012-08-10
EP2243264A1 (en) 2010-10-27
KR20100107071A (ko) 2010-10-04
US8509208B2 (en) 2013-08-13
RU2444854C1 (ru) 2012-03-10
IL206680A0 (en) 2010-12-30
TWI413386B (zh) 2013-10-21

Similar Documents

Publication Publication Date Title
MX2010008281A (es) Calculo de error de frecuencia.
NO20063570L (no) Frekvensfeilestimering og rammesynkronisering i et OFMD-system
TW200601754A (en) Channel estimation for a communication system using spectral estimation
TW201130272A (en) Low complexity unified control channel processing
WO2006083419A3 (en) Delay restricted channel estimation for multi-carrier systems
TW200740155A (en) Method for implementing an equalizer of an OFDM baseband reciever
WO2008150226A3 (en) Interference suppression in a multicarrier receiver
WO2009099704A3 (en) Dynamic soft keyboard
WO2011101230A3 (en) Data -aided channel estimation
WO2011002731A3 (en) Music instruction system
IN2014CN03554A (es)
TW200637161A (en) Correlation circuit for time-interleaved ADC and method thereof
WO2011002932A3 (en) Time tracking loops for a multicarrier communication system utilizing a cyclic prefix
TW200711414A (en) Method for efficient calibration of EVM using compression characteristics
TW200731721A (en) Method and apparatus for channel state information generation in a DVB-T receiver
WO2012103321A3 (en) Audio-based application architecture
EP1884876A3 (en) Systems and methods for time domain to frequency domain conversion using frequency shifting
ATE545207T1 (de) Verbundene demodulation und synchronisation in ultrabreitbandsystemen
WO2010012303A3 (en) State vector estimation using a constraint derived from a map
WO2009051062A1 (ja) 画像生成方法、装置、およびそのプログラム並びにプログラムを記録した記録媒体
WO2008049714A8 (en) Robust and low-complexity combined signal power estimation for ofdm
WO2012168303A3 (de) Verfahren zur erzeugung eines arcerkennungssignals und arcerkennungsanordnung
TW200726154A (en) Blind bandwidth detection for a sample stream
ATE539512T1 (de) Verfahren zum verfolgen der phase eines durch phasenkontinuierliche modulation modulierten signals und das verfahren implementierende synchronisationseinrichtung
WO2009021575A8 (de) Verfahren zum testen von geräten für ein mobilfunksystem, signalgenerator, gerät für ein mobilfunksystem und messsystem

Legal Events

Date Code Title Description
FG Grant or registration