Hybrid frequency offset estimator

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7590199
APP PUB NO 20050058229A1
SERIAL NO

10938299

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A hybrid carrier frequency offset estimator that uses data-aided and non-data-aided signal processing techniques to produce multiple candidates for the carrier frequency offset within a return channel receiver in a DVB-RCS system using turbo coding and quadrature phase shift keying (QPSK) data modulation. In this system, the invention is employed to estimate signal distortion caused by carrier frequency offset so that this particular source of signal distortion can be removed to improve the ability of the receiver to maintain synchronization in low signal-to-noise conditions. This, in turn, allows the receiver to meet the DVB-RCS performance target, measured in terms of packet loss ratio, in low signal-to-noise ratio conditions and in particular for burst-mode data transmission with a short data packet size.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
ADVANTECH SATELLITE NETWORKS INC.DORVAL QUEBEC4
Advantech Advanced Microwave Technologies, Inc.SAINT-LAURENT QUEBEC, CA3

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Alagha, Nader S Montreal , CA 3 59

Cited Art Landscape

Patent Info (Count) # Cites Year
 
QUALCOMM INCORPORATED (1)
* 7027429 Method and apparatus for time and frequency synchronization of OFDM communication systems 34 2001
 
WI-LAN INC. (1)
* 6363084 Method for estimating coarse frequency offset in OFDM receiver and apparatus employing the same 28 1998
 
LUCENT TECHNOLOGIES INC. (2)
* 6421399 Frequency and phase estimation for MPSK signals 10 1998
* 7023928 Synchronization of a pilot assisted channel estimation orthogonal frequency division multiplexing system 21 2001
 
MICRON TECHNOLOGY, INC. (1)
6002721 Carrier frequency estimator for a signal receiver 7 1998
 
SAMSUNG ELECTRONICS CO., LTD. (2)
* 7012881 Timing and frequency offset estimation scheme for OFDM systems by using an analytic tone 22 2000
* 7313085 Method for creating symmetric-identical preamble and method for synchronizing symbol and frequency of orthogonal frequency division multiplexed signals by using symmetric-identical preamble 16 2002
 
InterDigital Technology Corporation (1)
* 7254189 Blind carrier offset detection for quadrature modulated digital communication systems 6 2000
 
SOCIONEXT INC. (1)
* 6868131 Demodulation apparatus, broadcasting system and broadcast receiving apparatus 6 2001
 
LANTIQ DEUTSCHLAND GMBH (1)
* 7254194 Automatic gain control for communication receivers 9 2002
 
ALCATEL (1)
2003/0048,809 Receiver, sender, method and burst signal 2 2002
 
HARRIS CORPORATION (1)
* 7315588 System and method for enhanced acquisition for large frequency offsets and poor signal to noise ratio 4 2003
 
MITSUBISHI DENKI KABUSHIKI KAISHA (2)
* 5812611 Frequency estimating circuit and AFC circuit using the same 4 1996
* 6983134 Method and apparatus for automatic frequency control and demodulator 2 2000
 
STMICROELECTRONICS SA (1)
* 7203244 COFDM demodulator with an optimal FFT analysis window positioning 6 2003
 
GOOGLE TECHNOLOGY HOLDINGS LLC (1)
* 5640431 Method and apparatus for offset frequency estimation for a coherent receiver 71 1995
 
HONEYWELL FEDERAL MANUFACTURING & TECHNOLOGIES, LLC (1)
* 7239676 Method of differential-phase/absolute-amplitude QAM 1 2003
 
CSR TECHNOLOGY INC. (2)
* 6577271 Signal detector employing coherent integration 23 1999
* 6952440 Signal detector employing a Doppler phase correction system 39 2000
 
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. (1)
* 7002939 Communication terminal device and channel estimating method 24 2000
 
NOKIA CORPORATION (1)
* 2007/0153,930 Apparatus, method and computer program product providing joint synchronization using semi-analytic root-likelihood polynomials for OFDM systems 13 2006
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Availink, Inc. (3)
8301960 Interleaving scheme for an LDPC coded 32 APSK system 0 2010
* 2011/0202,814 INTERLEAVING SCHEME FOR AN LDPC CODED 32 APSK SYSTEM 1 2010
* 2010/0316,144 EFFICIENT FRAMING SCHEMES FOR SUPPORTING VCM/ACM IN DIGITAL SATELLITE TRANSMISSION SYSTEMS 0 2010
 
FUJITSU LIMITED (2)
* 8243858 Receiver and method for receiving 0 2011
* 2011/0135,041 RECEIVER AND METHOD FOR RECEIVING 2 2011
 
PACE PLC (2)
* 8582641 Satellite distribution apparatus, control means for use in satellite distribution apparatus and method of use thereof 0 2008
* 2008/0222,682 Satellite distribution apparatus, control means for use in satellite distribution apparatus and method of use thereof 2 2008
* Cited By Examiner

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 15, 2021
Fee Large entity fee small entity fee micro entity fee
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00