Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-08-29
2006-08-29
Fan, Chieh M. (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S141000, C375S297000, C375S148000, C600S521000, C455S562100, C379S406140, C342S455000
Reexamination Certificate
active
07099380
ABSTRACT:
A method and an apparatus for selecting an antenna from an antenna diversity array in a wireless communication system are provided. The method includes the steps of modulating an incoming signal with a spread-spectrum type modulation, measuring a signal quality value for each antenna in the antenna diversity array, and selecting an antenna from the antenna diversity array on the basis of the measured signal quality values. The step of measuring a signal quality value for each antenna may include computing peak-to-average ratio values by dividing a peak sample value by an average sample value, where the average sample value is determined by averaging all of the predetermined number of sample values for each of the plurality of incoming spreading codewords, and the peak sample value is determined by selecting the maximum of all of the predetermined number of sample values for each of the plurality of incoming spreading codewords.
REFERENCES:
patent: 4237903 (1980-12-01), Hofmann
patent: 5077753 (1991-12-01), Grau et al.
patent: 5838742 (1998-11-01), Abu-Dayya
patent: 6061574 (2000-05-01), Goldberg
patent: 6115406 (2000-09-01), Mesecher
patent: 6215812 (2001-04-01), Young et al.
patent: 6215814 (2001-04-01), Ylitalo et al.
patent: 6229842 (2001-05-01), Schulist et al.
patent: 6240149 (2001-05-01), Yukitomo et al.
patent: 6256340 (2001-07-01), Schilling
patent: 6259721 (2001-07-01), Uesugi et al.
patent: 6278726 (2001-08-01), Mesecher et al.
patent: 6609012 (2003-08-01), Malmgren et al.
patent: 6771772 (2004-08-01), Tanrikulu
patent: 2003/0086507 (2003-05-01), Kim et al.
patent: 2005/0206566 (2005-09-01), Stilp et al.
patent: 0642243 (1993-04-01), None
Liu et al. (“Advanced low-complexity HIPERLAN receiver using combined antenna switching diversity and simple equalizer”; IEEE 47th Vehicular Technology Conference, vol. 3; May 4-7, 1997; pp. 2037-2041).
Sarinnapakorn, K. (“IEEE 802.11b High Rate Wireless Local Area Networks”; http://alpha.fdu.edu/˜kanoksri/IEEE80211b.html ; Mar. 15th, 2001; pp. 1-8).
Ramasami (“Orthogonal Frequency Division Multiplexing”; http://www.ittc.ku.edu/˜rvc/documents/862/862—ofdmreport.pdf ; pp. 1-27).
Hettich, A.; “IEEE 802.11 or ETSI BRAN HIPERLAN/2: Who will win the race for a high speed wireless LAN standard?”; pp. 1-6.
Srivastava et al. (“A Systematic Approach to Peak-to-Average Power Ratio in OFDM”; http://fleece.ucsd.edu/˜curts/papers/SPIE01.pdf ; Oct. 22nd, 2001; pp. 1-11).
Tarokh et al.; “On the Computation and Reduction of the Peak-to-Average Power Ratio in Multicarrier Communications”; IEEE Transcations on Communications; vol. 48, No. 1: Jan. 2000; pp. 37-44.
Jones et al.; “Block coding scheme for reduction of Peak to mean envelope power ratio of multicarrier transmission schemes”; Electronics Letters; vol. 30, No. 25; Dec. 1994; pp. 2098-2099.
Feng Weishi
Hsu Yungping
Hu Guorong
Tang Hsiao
Fan Chieh M.
Marvell International Ltd.
Pathak Sudhanshu C.
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