Pulse or digital communications – Equalizers – Automatic
Patent
1992-04-10
1995-07-11
Chin, Stephen
Pulse or digital communications
Equalizers
Automatic
363131, 375231, 375230, H03H 730
Patent
active
054328160
ABSTRACT:
An adaptive communications receiver for data-transmission which comprises a channel estimator and sequence estimator. The channel estimator consists of a recursive least squares algorithm which uses a known training signal or past decisions to provide a channel estimate. The sequence estimator consists of a new recursive algorithm which uses the channel estimate to estimate the information sequence transmitted over the channel. The receiver exploits the commonality between the sequence and channel estimator to provide an efficient implementation. The receiver can have varying degrees of non-linearity and is lower in complexity and more robust than linear or decision feedback equalizers in the presence of channel mismatch.
REFERENCES:
patent: 4539690 (1985-09-01), Speidel
patent: 4577329 (1986-03-01), Brie et al.
patent: 4974142 (1990-11-01), Leslie
patent: 4985902 (1991-01-01), Gurcan
patent: 5047859 (1991-09-01), Koo
patent: 5068873 (1991-11-01), Murakami
patent: 5111481 (1992-05-01), Chen
An Adaptive Fir Karman Equalizer With Improved Convergence Properties, M. Yurtseven, M. Kumar, ISA--Paper #90-0983, pp. 507-513 Sep. 1987.
Adaptive Kalman Filter Equaliser, E. Dalle Mese, G. Corsini, Electronics Letters, vol. 16, No. 14, pp. 547-549, Jul. 3, 1980.
Design and Performance of an Adaptive Kalman Receiver for Synchronous Data Transmission, A. Luvison, G. Pirani, IEEE Transactions on Aerospace and Electronic Systems, vol. AES-15, No. 5, pp. 635-648, Sep. 1979.
On Linear Receivers for Digital Transmission Systems, S. Benedetto, E. Biglieri, IEEE Transactions on Communications, vol. COM-22, No. 9, pp. 1205-1215, Sep. 1974.
An Approach to Recursive Equalization via White Sequence Estimation Techniques, S. Prasad, S. Pathak, IEEE Transactions on Communications, vol. COM-35, No. 10, pp. 1037-1040, Oct. 1987.
A State-Variable Approach to the Equalization of Multilevel Digital Signals, A. Luvison, G. Pirani, CSELT Rapporti Tecnici--N. 3--Apr. 1974.
Kalman Filter for Equalization of Digital Communications Channel, S. Kleibanov, V. Prival'skii and I. Time, Consultants Bureau, pp. 1097-1101, Jun. 1974.
A Note on the Modified Kalman Filter for Channel Equalization, J. Mark, Proceedings of the IEEE, pp. 481-482, Apr. 1973.
The Kalman Filter for the Equalization of a Digital Communications Channel, R. Lawrence, H. Kaufman, IEEE Transactions on Communication Technology, vol. COM-19, No. 6, pp. 1137-1140, Dec. 1971.
An Adaptive Kalman Equalizer: Structure and Performance, B. Mulgrew, C. Cowan, IEEE Transactions on Acoustics, Speech and Signal Processing, vol. ASSP-35, No. 12, pp. 1727-1735, Dec. 1987.
Augspurger Lynn L.
Chin Stephen
International Business Machines - Corporation
Luther William
Samodovitz Arthur J.
LandOfFree
System and method of robust sequence estimation in the presence does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method of robust sequence estimation in the presence , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method of robust sequence estimation in the presence will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-509237