US Patent No: 8,229,036

Number of patents in Portfolio can not be more than 2000

Characterizing channel response using data tone decision feedback

ALSO PUBLISHED AS: 20090161781

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

Characterizing channel response using data tone decision feedback. In addition, to pilot tones which may be existent within an orthogonal frequency division multiplexing (OFDM) signal, one or more data tones within that same signal may be employed to assist with channel estimation (alternatively, detection). Once a data tone qualifies as a pseudo-pilot tone, it may be used with the pilot tones for channel estimation. A qualifier considers slicer error associated with hard decisions for a data tone to determine if it is a candidate for assistance within channel estimation. A frame within an OFDM signal may, in one situation, include no pilot tones at all, and a previously calculated channel estimate may be used to process that frame. In addition, fewer pilot tones than needed to perform accurate channel estimation (based on the channel delay spread) may be employed by using one or more pseudo-pilot tones (e.g., qualified data tones).

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

First Claim

See full text

all claims..

Related Publications

Loading Related Publications... loading....

Patent Owner(s)

Patent OwnerAddressTotal Patents
BROADCOM CORPORATIONIRVINE, CA8934

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kolze, Thomas J Phoenix, AZ 194 609

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BROADCOM CORPORATION (2)
7,139,331 Characterizing channel response in a single upstream burst using redundant information from training tones 5 2002
2003/0012,127 Detection and mitigation of temporary (bursts) impairments in channels using SCDMA 7 2002
 
QUALCOMM INCORPORATED (2)
7,035,329 Soft slicer in a hybrid decision feedback equalizer 8 2002
7,701,917 Channel estimation for a wireless communication system with multiple parallel data streams 13 2004
 
AT&T CORP. (1)
7,292,651 Pilot-aided channel estimation for OFDM in wireless systems 53 2003
 
AT&T WIRELESS SERVICES, INC. (1)
6,901,125 Method for error compensation in an OFDM system with diversity 7 2002
 
CISCO TECHNOLOGY, INC. (1)
7,397,758 Channel tracking in a OFDM wireless receiver 27 2004
 
HER MAJESTY THE QUEEN IN RIGHT OF CANADA, AS REPRESENTED BY THE MINISTER OF INDUSTRY, THROUGH THE COMMUNICATIONS RESEARCH CENTRE CANADA (1)
7,995,688 Channel estimation and ICI cancellation for OFDM 4 2008
 
INFINEON TECHNOLOGIES AG (1)
7,352,829 Data-aided channel estimation 6 2004
 
KOREA ELECTRONICS TECHNOLOGY INSTITUTE (1)
7,649,830 Hybrid type channel estimation method and system for mobile environment 2 2005
 
NAVINI NETWORKS, INC. UNDER THE NAME OF CISCO-NAVINI NETWORKS, INC. (1)
8,031,786 Method and system for improving channel estimation in a communications network 2 2007
 
OPTIS WIRELESS TECHNOLOGY, LLC (1)
2008/0151,989 Quasi-Pilot Symbol Substitution 8 2005
 
TELECOMMUNICATIONS ADVANCEMENT ORGANIZATION OF JAPAN (1)
7,130,587 Communication quality estimation method, communication quality estimation apparatus, and communication system 41 2002
 
TEXAS INSTRUMENTS INCORPORATED (1)
2004/0219,945 Increasing effective number of data tones in a multi-tone communication system 2 2003

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BROADCOM CORPORATION (1)
8,731,113 Characterizing channel response using data tone decision feedback 0 2012
 
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE (1)
8,385,478 Channel estimation method and device using the same 2 2011
 
SAMSUNG ELECTRONICS CO., LTD. (1)
8,755,464 Method and apparatus for performing channel estimation in a wireless communication system 0 2012

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Jan 24, 2016
7.5 Year Payment $3600.00 $1800.00 $900.00 Jan 24, 2020
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 24, 2024
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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

Full Text

 
loading....