Pulse or digital communications – Equalizers
Reexamination Certificate
2008-05-06
2008-05-06
Payne, David C. (Department: 2611)
Pulse or digital communications
Equalizers
C333S018000, C708S323000
Reexamination Certificate
active
07369607
ABSTRACT:
Various methods and apparatus are described that use a filter. A receiver may be configured to receive multi-tone signals. The receiver has a Time Domain Equalizer filter employing an algorithm to shorten a length of an incoming impulse response to equal to or less than a guard period by calculating a minimum mean square error solution in combination with measuring an inter-symbol interference of a channel.
REFERENCES:
patent: 4384355 (1983-05-01), Werner
patent: 5285474 (1994-02-01), Chow et al.
patent: 5483551 (1996-01-01), Huang et al.
patent: 5524125 (1996-06-01), Tsujimoto
patent: 5627859 (1997-05-01), Parr
patent: 5952914 (1999-09-01), Wynn
patent: 6674795 (2004-01-01), Liu et al.
patent: 7031669 (2006-04-01), Vaidyanathan et al.
patent: 2002/0163959 (2002-11-01), Haddad
patent: 2003/0035469 (2003-02-01), Frank et al.
patent: 2003/0112860 (2003-06-01), Erdogan
patent: 2003/0227967 (2003-12-01), Wang et al.
patent: 2004/0141548 (2004-07-01), Shattil
patent: 2004/0223449 (2004-11-01), Tsuie et al.
patent: 2006/0115030 (2006-06-01), Erving et al.
Franklin, Curt, “How DSL Works,” How Stuff Works, http://computer.howstuffworks.com/dsl.htm/printable, printed Nov. 16, 2004.
Sedarat, Hossein, et al., “Impulse Noise Protection for Multi-Carrier Communication Systems”, Submitted to IEEE ICASSP (2005).
Sedarat, Hossein, et al., “Multicarrier Bit-Loading in Presence of Biased Gaussian Noise Sources”, IEEE Consumer Communication and Networking Conference, Jan. 2005.
Baccarelli, Enzo, et al., Novel Efficient Bit-Loading Algorithms for Peak-Energy-Limited ADSL-Type Multicarrier Systems, IEEE Trans on Signal Processing, vol. 50, No. 5, May 2002.
Sonalkar, Ranjan, et al., “An Efficient Bit-Loading Algorithm for DMT Application,” IEEE Comm. Letters, vol. 4, pp. 80-82, Mar. 2000.
Campello, Jorge, “Optimal Discrete Bit Loading for Multicarrier Modulation Systems,” IEEE International Symposium on Information Theory, Aug. 1998, Cambridge, MA.
Chow, Peter S., et al., “A Practical Discrete Multitone Transceiver Loading Algorithm for Data Transmission over Spectrally Shaped Channels,” IEEE Trans. on Communications, vol. 43, No. 2, 1995.
Fischer, Robert F.H., et al., “A New Loading Algorithm for Discrete Multitone Transmission,” IEEE, 1996, pp. 724-728.
Lampe, Lutz H.-J., et al., “Performance Evaluation of Non-Coherent Transmission over Power Lines,” 8 pgs.
Henkel, Werner, et al., “Maximizing the Channel Capacity of Multicarrier Transmission by Suitable Adaptation of the Time-Domain Equalizer,” IEEE, vol. 48, No. 12, Dec. 2000.
Lashkarian, Navid, et al., “Fast Algorithm for Finite-Length MMSE Equalizers with Application to Discrete Multitone Systems,” IEEE 1999, pp. 2753-2756.
Melsa, Peter J.W., et al., “Impulse Response Shortening for Discrete Multitone Transceivers,” IEEE vol. 44, No. 12, Dec. 1996, pp. 1662-1672.
Al-Dhahir, Naofal, et al., “Optimum Finite-Length Equalization for Multicarrier Transceivers,” IEEE vol. 44, No. 1, Jan. 1996, pp. 56-64.
Leke, Achankeng, et al., “A Maximum Rate Loading Algorithm for Discrete Multitone Modulation Systems,” IEEE 1997, pp. 1514-1518.
Bingham, John A.C., “Multicarrier Modulation for Data Transmission: An Idea Whose Time Has Come,” IEEE, May 1990, pp. 5-14.
Arslan, G., et al., “Equalization for Discrete Multitone Transceivers to Maximize Bit Rate,” IEEE, vol. 49, No. 12, Dec. 2001, pp. 3123-3135.
Farhang-Boroujeny, Behrouz, et al., “Design Methods for Time-Domain Equalizers in DMT Transceivers,” IEEE, vol. 49, No. 3, Mar. 2001, pp. 554-562.
Wyglinski, Alexander M., et al., “An Efficient Bit Allocation for Multicarrier Modulation,” IEEE Wireless Communication, Networking Conference, Atlanta, GA, Mar. 2004, 4 pgs.
“Draft Standard,” Network and Customer Installation Interfaces- Asymmetric Digital Subscriber Line (ADSL) Metallic Interface, Draft American National Standard for Telecommunications, Alliance for Telecommunications Industry Solutions, T1.413-1998.
Krongold, Brian S., et al., “Computationally Efficient Optimal Power Allocation Algorithms for Multicarrier Communication Systems,” IEEE Trans. on Communications, vol. 48, pp. 23-27, Jan. 2000.
Barreto, Andre Noll, et al., “Adaptive Bit Loading for Wireless OFDM Systems,” IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Oct. 2001.
Milosevic et al., “Simultaneous Multichannel Time Domain Equalizer Design Based on the Maximum Composite Shortening SNR”. Dept. of Electrical and Computer Eng., The University of Texas, Austin Texas, Prior to filing date of current application, pp. 5 total.
Ana Garcia Armada et al., “Multi-User Constant-Energy Bit Loading for M-PSK-Modulated Orthogonal Frequency Division Multiplexing”, © 2002 IEEE, pp. 526-530.
Misao Fukuda et al., “A Line Terminating LSI Using Echo Cancelling Method for ISDN Subscriber Loop Transmission”. IEEE Journal on Selected Areas in Communications, vol. 6, No. 3, Apr. 1988, pp. 476-483.
Cheng-Shing Wu et al., “A Novel Cost-Effective Multi-Path Adaptive Interpolated FIR (IFIR)-Based Echo Canceller”, © 2000 IEEE, pp. V-453-V-456.
Ranjan V. Sonalkar et al., “Shannon Capacity of Frequency-Overlapped Digital Subscriber Loop Channels”, © 2002 IEEE, pp. 1741-1745.
Ivan A. Perez-Alvarez et al., “A Differential Error Reference Adaptive Echo Canceller for Multilevel PAM Line Codes” Work supported by National Project T1C95-0026, © 1996, IEEE, pp. 1707-1710.
Nadeem Ahmed et al., “Optimal Transmit Spectra for Communication in the Presence of Crosstalk and Imperfect Echo Cancellation”, Copyright 2001 IEEE, pp. 17-21.
2Wire, Inc.
Blakely , Sokoloff, Taylor & Zafman LLP
Nguyen Leon-Viet Q
Payne David C.
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