Fine symbol timing estimation

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8472569
APP PUB NO 20120140858A1
SERIAL NO

12961271

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Systems and methods for fine symbol timing estimation are disclosed herein. In one embodiment, a wireless receiver includes a differential detector, a correlator, a coarse symbol timing estimator, and a fine symbol timing estimator. The differential detector is configured to detect phase differences in a received preamble signal modulated using differential phase shift keying. The correlator is configured to correlate symbol values output by the differential detector against a reference sequence. The coarse symbol timing estimator is configured to generate a coarse symbol timing estimate, and to generate a coarse timing sample symbol index value corresponding to the coarse symbol timing estimate. The fine symbol timing estimator is configured to generate a fine symbol timing estimate that is more accurate than the coarse symbol timing estimate based on the coarse timing sample symbol index value and correlation samples at index values preceding and succeeding the coarse timing sample index value.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TEXAS INSTRUMENTS INCORPORATEDDALLAS, TX16898

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hosur, Srinath Plano, US 161 2007
Roh, June Chul Allen, US 53 227
Schmidl, Timothy M Dallas, US 118 2574

Cited Art Landscape

Patent Info (Count) # Cites Year
 
SICOM, INC. (1)
* 5764102 Multi-stage symbol synchronization 18 1997
 
INTEL CORPORATION (1)
* 2004/0190,560 Receiver and method to detect and synchronize with a symbol boundary of an OFDM symbol 15 2003
 
SAMSUNG ELECTRONICS CO., LTD. (2)
* 2006/0098,751 Methods of automatically detecting spectrum inversion and related terrestrial digital video broadcasting receivers 8 2005
* 2008/0181,317 Apparatus and Method for Estimating Timing Offset of OFDM Symbol, and Method of Recovering Symbol Timing of OFDM Symbol 4 2007
 
The United States of America as represented by the Secretary of the Navy (1)
* 6459745 Frequency/timing recovery circuit for orthogonal frequency division multiplexed signals 20 1999
 
MITSUBISHI DENKI KABUSHIKI KAISHA (1)
* 6154487 Spread-spectrum signal receiving method and spread-spectrum signal receiving apparatus 110 1998
 
LG ELECTRONICS INC. (1)
* 2006/0132,662 Apparatus for synchronization acquisition in digital receiver and method thereof 1 2005
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
TEXAS INSTRUMENTS INCORPORATED (1)
* 9419835 System and method for preamble detection in MIMO narrowband power line communications 0 2014
* Cited By Examiner

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