Channel estimation in orthogonal frequency-division...

Multiplex communications – Generalized orthogonal or special mathematical techniques

Reexamination Certificate

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Details

C370S208000, C075S249000, C075S249000, C075S347000

Reexamination Certificate

active

10308513

ABSTRACT:
A system and method for estimating channel characteristics in orthogonal frequency-division multiplexing (OFDM) systems with transmitter diversity is presented. The disclosed approach is compatible with the Institute of Electrical and Electronics Engineers (IEEE) “Wireless Local Area Network (LAN) Medium Access Control (MAC) and Physical Layer (PHY) Specification.” In the disclosed system and method, an additional training symbol is transmitted during the data period. This provides additional information that may be used to more accurately estimate channel characteristics.

REFERENCES:
patent: 5303263 (1994-04-01), Shoji et al.
patent: 5481572 (1996-01-01), Skold et al.
patent: 6185258 (2001-02-01), Alamouti et al.
patent: 6449314 (2002-09-01), Dabak et al.
patent: 6507604 (2003-01-01), Kuo
patent: 6611551 (2003-08-01), Jones et al.
patent: 6707856 (2004-03-01), Gardner et al.
patent: 6775329 (2004-08-01), Alamouti et al.
patent: 6850481 (2005-02-01), Wu et al.
patent: 6885708 (2005-04-01), Thomas et al.
patent: 6959047 (2005-10-01), Al-Dhahir et al.
patent: 7120200 (2006-10-01), Alamouti et al.
patent: 2002/0044524 (2002-04-01), Laroia et al.
patent: 2003/0072452 (2003-04-01), Mody et al.
patent: 2003/0128751 (2003-07-01), Vandenameele-Lepla
patent: 2004/0005010 (2004-01-01), He et al.
OFDM Wireless LANs: A Theoretical and Practical Guide Terry, et al.
A Simple Transmit Diversity Technique for Wireless Communications Alamouti; Oct. 1998.
Transmitter Diversity for OFDM Systems and Its Impact on High-Rate Data Wireless Networks Li, et al.; Jul. 1999.
Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-Speed Physical Layer in the 5 GHZ Band IEEE Computer Society; Sep. 1999.
Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-Speed Physical Layer in the 2.4 GHZ Band IEEE Computer Society; Sep. 1999.
Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-Speed Physical Layer in the 5 GHZ Band IEEE Computer Society; Nov. 1999.
A Space-Time Coded Transmitter Diversity Technique for Frequency Selective Fading Channels Lee, et al.; 2000.
Summary of Properties of the Discrete Fourier Transform Jul. 2002.

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