Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2011-03-29
2011-03-29
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S146000, C375S147000
Reexamination Certificate
active
07916770
ABSTRACT:
ej(2nπ/N)calculating section101generates a bth chip C(a,b) of an ath spreading code based on C(a,b)=ej(2nπ/N)where e is a base of natural logarithm and N is a length of the spreading code (i.e. spreading code length). It is assumed in the above equation that n=a×b, a=0˜N−1, and b=0˜N−1. It is thereby possible to generate orthogonal spreading codes with arbitrary lengths.
REFERENCES:
patent: 3099795 (1963-07-01), Frank
patent: 6154443 (2000-11-01), Huang et al.
patent: 6560194 (2003-05-01), Gourgue et al.
patent: 6625136 (2003-09-01), Niegel et al.
patent: 6667708 (2003-12-01), Schooler et al.
patent: 7324434 (2008-01-01), Sawahashi et al.
patent: 7330496 (2008-02-01), Ohmi et al.
patent: 7372891 (2008-05-01), Widdowson et al.
patent: 2002/0150067 (2002-10-01), Feria et al.
patent: 2004/0042386 (2004-03-01), Uesugi et al.
patent: 2005/0018753 (2005-01-01), Ohmi et al.
patent: 2005/0031018 (2005-02-01), Papadimitriou et al.
patent: 2010/0014562 (2010-01-01), Tanaka
patent: 2010/0014563 (2010-01-01), Tanaka
patent: 1 278 309 (2003-01-01), None
patent: 07107007 (1995-04-01), None
patent: 10164009 (1998-06-01), None
patent: 2000115130 (2000-04-01), None
patent: 2003046481 (2003-02-01), None
patent: 9820639 (1998-05-01), None
Dinan et al., Spreading Codes For Direct Sequence CDMA and Wideband CDMA Cellular Networks, Sep. 1998, Communications Magazine, IEEE, vol. 36, pp. 48-55.
Cha et al., Design of Collision Free Codes Based On MAI-Free Principles, Dec. 2006, Intelligent Information Hiding and Multimedia Signal Processing, 2006, IIH-MSP'06, International Conference on, pp. 639-642.
Ojha et al., impact of Noise and Target Fluctuation on the Performance of Frank Polyphase Coded Radar Signals, Mar. 1-3, 1992, System theory, 1992, Proceedings, SSST/CSA 92. The 24th Southeastern Symposium on and The 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design, pp. 615-619.
Ojha, A., Impact Of Noise And Target Fluctuation On The Performance Of Frank Polyphase Coded Radar Signals, Mar. 1-3, 1992, System Theory, 1992, Proceedings. SSST/CSA 92. The 24th Southeastern Symposium on the 3rd Annual Symposium on Communications, Signal Processing Expert Systems, and ASIC VLSI Design, pp. 615-619.
Suehiro, N., Asynchronous SSMA System Using Secret Polyphase Orthogonal Sequences With Elimination Filter For Co-Channel Interference, Sep. 17-19, 1992, Systems Engineering, 1992., IEEE International Conference on, pp. 119-122.
Suehiro, N., Binary or Quadrature Signal Design For Approximately Synchronized CDMA Systems Without Detection Sidelobe Nor Co-channel Interference, Sep. 22-25, 1996, Spread spectrum Technologies and applications Proceedings, 1996., IEEE 4th International Symposium on, vol. 2, pp. 650-656.
PCT International Search Report dated Aug. 17, 2004.
Robert L. Frank; “Polyphase Codes with Good Non periodic Correlation Properties,” IEEE Transactions on Information Theory, vol. 9, issue: Jan. 1963, pp. 43-45.
European Search Report dated Jul. 2, 2010.
Bocure Tesfaldet
Dickinson Wright PLLC
Panasonic Corporation
Williams Lawrence B
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