Telecommunications – Receiver or analog modulated signal frequency converter – Measuring or testing of receiver
Reexamination Certificate
2007-01-02
2007-01-02
Gesesse, Tilahun (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Measuring or testing of receiver
C370S335000, C370S342000
Reexamination Certificate
active
10600652
ABSTRACT:
Under present circumstances, where an increasing number of wireless communication systems employ the QAM method as a modulation method for frequency use efficiency enhancement as the speed of information transmission in the wireless communication systems increases, it is an object of the present invention to provide a channel estimation method for estimating a channel efficiently and accurately and establishing communication at high quality, that is, providing communication with excellent error rate characteristics. To achieve the above object, the present invention improves characteristics by calculating the channel estimation results variously for all data signal symbols and using them for demodulation. To accomplish the object, the present invention also pays attention to the frequency characteristics of fading in a radio propagation path and enhances the accuracy in channel estimation result calculation by using a band pass filter for eliminating the thermal noise that would increase the estimation error.
REFERENCES:
patent: 5329547 (1994-07-01), Ling
patent: 5737327 (1998-04-01), Ling et al.
patent: 6034952 (2000-03-01), Dohi et al.
patent: 6314131 (2001-11-01), Roe et al.
patent: 6456827 (2002-09-01), Kubo et al.
patent: 6507602 (2003-01-01), Dent
patent: 6647003 (2003-11-01), Abeta et al.
patent: 6892053 (2005-05-01), Engstrom
patent: 0 955 741 (1998-11-01), None
Hidehiro Andoh and Mamoru Sawahashi, “Channel Estimation Scheme using the Plural Pilot Blocks for DS-CDMA Mobile Radio”, The Institute of Electronics, Information and Communication Engineers, Technical Report of IEICE, RCS96-72, vol. 96, No. 213, Aug. 1996, pp. 45-50.
European Search Report dated Jun. 2, 2004.
Hanaoka Seishi
Yano Takashi
A. Marquez, Esq. Juan Carlos
Fisher Esq. Stanley P.
Gesesse Tilahun
Reed Smith LLP
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