Detection and mitigation of temporary impairments in a...

Pulse or digital communications – Receivers – Particular pulse demodulator or detector

Reexamination Certificate

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C375S226000, C375S227000, C375S316000, C375S341000, C375S346000, C714S699000, C714S704000, C714S794000, C714S795000, C714S796000

Reexamination Certificate

active

08068564

ABSTRACT:
Systems and methods are disclosed for detecting temporary high level impairments, such as noise or interference, for example, in a communications channel, and subsequently, mitigating the deleterious effects of the dynamic impairments. In one embodiment, the method not only performs dynamic characterization of channel fidelity against impairments, but also uses this dynamic characterization of the channel fidelity to adapt the receiver processing and to affect an improvement in the performance of the receiver. For example, in this embodiment, the method increases the accuracy of the estimation of the transmitted information, or similarly, increases the probability of making the correct estimates of the transmitted information, even in the presence of temporary severe levels of impairment. The channel fidelity history may also be stored and catalogued for use in, for example, future optimization of the transmit waveform.

REFERENCES:
patent: 5406593 (1995-04-01), Chennakeshu et al.
patent: 5604730 (1997-02-01), Tiedemann, Jr.
patent: 5671253 (1997-09-01), Stewart
patent: 5751725 (1998-05-01), Chen
patent: 5910959 (1999-06-01), Olafsson et al.
patent: 5942003 (1999-08-01), Ivry
patent: 6215827 (2001-04-01), Balachandran et al.
patent: 6298092 (2001-10-01), Heath et al.
patent: 6438180 (2002-08-01), Kavcic et al.
patent: 6691263 (2004-02-01), Vasic et al.
patent: 6760385 (2004-07-01), Goodson
patent: 0 689 312 (1995-12-01), None
patent: 0 991 239 (2000-04-01), None
patent: 97/50198 (1997-12-01), None
patent: 01/26318 (2001-04-01), None
Weon-Cheol, L. et al., “Performance Analysis of Viterbi Decoder Using Channel State Information in COFDM System”, IEEE Transactions on Broadcasting, IEEE Inc., Dec. 1998, pp. 488-496, vol. 44, No. 4, New York, USA, XP002342542.
Mignone, V. et al., “CD3-ODFM: A New Channel Estimation Method to Improve the Spectrum Efficiency in Digital Terrestrial Television Systems”, International Broadcasting Convention, Sep. 14, 1995, pp. 122-128, No. 413, XP000617513.
Jacobsmeyer, J.M., “An Adaptive Modulation Scheme for Bandwidth-Limited Meteor-Burst Channels”, 1988 IEEE Military Communications Conference, Oct. 23, 1988, pp. 933-937, New York, USA, XP010072049.
Lops, M. et al., “Narrow-Band-Interference Suppression in Multiuser CDMA Systems”, Sep. 1998, pp. 1163-1175.
Young, J. et al., “Analysis of DFT-Based Frequency Excision Algorithms for Direct-Sequence Spread-Spectrum Communications”, Aug. 1998, pp. 1076-1087.

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