Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2006-02-14
2006-02-14
Tran, Khai (Department: 2637)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S347000, C375S349000, C381S071110, C381S094700
Reexamination Certificate
active
06999541
ABSTRACT:
A method of processing signals received from an array of sensors is disclosed comprising the steps of sampling and digitally converting the received signals and processing the digitally converted signals to provide an output signal, the processing including filtering the signals using a first adaptive filter arranged to enhance a target signal of the digitally converted signals and a second adaptive filter arranged to suppress an unwanted signal of the digitally converted signals and processing the filtered signals in the frequency domain to suppress the unwanted signal further.
REFERENCES:
patent: 4025721 (1977-05-01), Graupe et al.
patent: 4425481 (1984-01-01), Mansgold et al.
patent: 4589137 (1986-05-01), Miller
patent: 4628529 (1986-12-01), Borth et al.
patent: 4630304 (1986-12-01), Borth et al.
patent: 4630305 (1986-12-01), Borth et al.
patent: 4887299 (1989-12-01), Cummins et al.
patent: 4931977 (1990-06-01), Klemes
patent: 4956867 (1990-09-01), Zurek et al.
patent: 5027410 (1991-06-01), Williamson et al.
patent: 5224170 (1993-06-01), Waite, Jr.
patent: 5402496 (1995-03-01), Soli et al.
patent: 5412735 (1995-05-01), Engebretson et al.
patent: 5471538 (1995-11-01), Sasaki et al.
patent: 5475759 (1995-12-01), Engebretson
patent: 5557682 (1996-09-01), Warner et al.
patent: 5568519 (1996-10-01), Baier et al.
patent: 5610991 (1997-03-01), Janse
patent: 5627799 (1997-05-01), Hoshuyama
patent: 5680467 (1997-10-01), Hansen
patent: 5694474 (1997-12-01), Ngo et al.
patent: 5737430 (1998-04-01), Widrow
patent: 5740256 (1998-04-01), Castello Da Costa et al.
patent: 5754665 (1998-05-01), Hosoi
patent: 5793875 (1998-08-01), Lehr et al.
patent: 5825898 (1998-10-01), Marash
patent: 5835607 (1998-11-01), Martin et al.
patent: 5835608 (1998-11-01), Warnaka et al.
patent: 5917921 (1999-06-01), Sasaki et al.
patent: 5991418 (1999-11-01), Kuo
patent: 6002776 (1999-12-01), Bhadkamkar et al.
patent: 6049607 (2000-04-01), Marash et al.
patent: 6069963 (2000-05-01), Martin et al.
patent: 6072884 (2000-06-01), Kates
patent: 6091813 (2000-07-01), Harley et al.
patent: 6094150 (2000-07-01), Ohnishi et al.
patent: 6097771 (2000-08-01), Foschini
patent: 6127973 (2000-10-01), Choi et al.
patent: 0883325 (1998-12-01), None
patent: 03/036614 (2003-05-01), None
“Adaptive Antenna Systems”, by Widrow et al., Proceedings of the IEEE, vol. 55, No. 12, Dec., 1967, pp. 2143-2159.
“Signal Cancellation Phenomena in Adaptive Antennas: Causes and Cures”, by Widrow et al., IEEE Transactions on Antennas and Propagation, vol. AP-30, No. 3, May, 1982, pp. 469-478.
“An Adaptive Generalized Sidelobe Canceller with Derivative Constraints”, by Buckley et al., IEEE Transactions on Antennas and Propagation, vol. AP-34, No. 3, Mar., 1986, pp. 311-319.
“Fundamentals of Speech Recognition”, by Rabiner et al., Prentice Hall, 1993, pp. 77-79 and 183-190.
“Speech Enhancement Using a Minimum Mean-Square Error Short-Time Spectral Amplitude Estimator”, by Ephraim et al., IEEE Transactions on Acoustics, and Signal Processions, vol. ASSP-32, No. 6, Dec., 1984, pp. 1109-1121.
Griffiths et al., “Alternative Approach to Linearly Constrained Adaptive Beamforming”, IEEE Transactions on Antennas and Propagation, vol. AP-30, No. 1, Jan. 1982, pp. 27-34.
Ephraim et al., “Speech Enhancement Using Optimal Non-Linear Spectral Amplitude Estimation,” Proc. IEEE International Conference Acoustics Speech and Signal Processing (Boston), 1983, pp. 1118-1121.
Bitwave Pte Ltd.
Greenblum & Bernstein P.L.C.
Lugo David B.
Tran Khai
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