Pulse or digital communications – Receivers – Particular pulse demodulator or detector
Reexamination Certificate
2005-02-14
2009-11-24
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Receivers
Particular pulse demodulator or detector
C375S262000
Reexamination Certificate
active
07623598
ABSTRACT:
Apparatus for demodulation of a signal which is frequency-modulated with a data symbol sequence {dk}, having a zero crossing detector (1), a generator (2) for production of a sequence {zi}, with zibeing calculated from zero crossings tiand ti+1, and having a unit (3) for reconstruction of the data symbol sequence {dk}, which is characterized by a minimum Euclidean distance between the sequence {zi} and an auxiliary sequence, with each sequence element in the auxiliary sequence being formed from convolution of the data symbol sequence {dk} with a sequence {hi,k} relating to the index k, and with the sequences {hi,k} being functions of the times tiand ti+1.
REFERENCES:
patent: 4755774 (1988-07-01), Heck
patent: 5077728 (1991-12-01), Kaminow
patent: 5329242 (1994-07-01), Myers
patent: 5784416 (1998-07-01), Yang et al.
patent: 6108374 (2000-08-01), Balachandran et al.
patent: 2002/0085520 (2002-07-01), Sydon et al.
patent: 2003/0088390 (2003-05-01), Jamsa et al.
patent: 2004/0029599 (2004-02-01), Mehrgardt et al.
patent: 10103479 (2002-08-01), None
patent: 01/13524 (2001-02-01), None
patent: 01/13524 (2001-02-01), None
PCT International Search Report Application No. PCT/DE03/02543, 3 pages (English), Mailed Dec. 4, 2003.
“Error Performance Analysis for Narrow-Band Duobinary FM with Discriminator Detection and Soft Decision Decoding,” by T.T. Tjhung, et al.; IEE Transactions on Communications, vol. 37, No. 11, pp. 1222-1228, Nov. 1989.
“Sequence Estimation Using Viterbi Algorithm for Improving Bit Error Rate of Binary Continuous Phase FSK with Limiter Discriminator and Integrate & Dump Filter Detection,” by Y. lwanami, et al., Dept. of Electrical and Computer Engineering, Nagoya Institute of Technology, Nagoya-shi, 466, Japan, Conference Singapore ICCS/ISITA, pp. 122-126, 1992.
“Performance of Sequence Estimation Scheme of Narrowband Digital FM Signals with Limiter-Discrminator Detection,” by Iwanami Yasunori; IEEE Journal on Selected Areas in Communications, vol. 13, No. 2, pp. 310-315, Feb. 1995.
“Low-Power Design of a DIgital FM Demodulator Based on Zero-Cross Detection at IF” by N. Ismailoglu et al.; IEEE Vehicular Technology Conference, New York, US, vol. 2, conf. 50, pp. 810-813., Sep. 19-22, 1999.
Ismailoglu, et al., Low-Power Design of a Digital FM Demodulator Based on zer-Cross Detection at if, XP-000924622, IEEE, pp. 810-813, 1999.
Iwanami, et al.,Sequence Estimation Scheme Using Viterbi Alorithm for Improving bit Error Rate of Binary Continuous Phase FSK with Limiter Discriminator and Integrate & Dump Filter Detection, Department of Electrical and Computer Engineering Nagoya Institute of Technology, Nagoya-shi, 466 Japan, 1992.
PCT Search Report for PCT/DE03/02543, Dec. 04, 2003.
Tjhung, et al.,Error Performance Analysis for Narro-Band Duobinary FM with Discriminatior Detection and Soft Decision Decoding, IEEE Transactions on Communications, vol. 37, No. 11, pp. 1222-1228, Nov. 1989.
Yasunori Iwanami,Performance of Sequence Estimation Scheme of Narrowband Digital FM Signals with Limiter-Discriminator Detection, Jrnl on Slected Areas in Communications, vol. 13, No. 2, pp. 310-315, Feb. 1995.
Neubauer Andre
Niederholz Jürgen
Dicke Billig & Czaja, PLLC
Huang David
Infineon - Technologies AG
Liu Shuwang
LandOfFree
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