A Combined Channel - Modified Adaptive Array Mmse Canceller and Viterbi Equalizer

A COMBINED CHANNEL-MODIFIED ADAPTIVE ARRAY MMSE CANCELLER AND VITERBI EQUALIZER by Richard M Friedman In this thesis, a very simple scheme is proposed which couples a maximum-likelihood sequence estimator (MLSE) with a X-element canceller. The method makes use of the MLSE's channel estimator to modify the locally generated training sequence used to calculate the antenna array weights. This method will increase the array's degree of freedom for interference cancellation by allowing the dispersive, desired signal to pass through the array undisturbed. Temporal equalization of the desired signal is then accomplished using maximum-likelihood sequence estimation. The T-spaced channel estimator coefficients and the array weights are obtained simultaneously using the minimum mean square error criteria. The result is a X-element receiver structure capable of canceling X-1 in-band interferences without compromising temporal equalization. A COMBINED CHANNEL-MODIFIED ADAPTIVE ARRAY MMSE CANCELLER AND VITERBI EQUALIZER by Richard M Friedman A Thesis Submitted to the Faculty of New Jersey Institute of Technology In Partial Fulfillment of the Requirements for the Degree of Master of Science in Electrical Engineering Department of Electrical and Computer Engineering August 2003 APPROVAL PAGE A COMBINED CHANNEL-MODIFIED ADAPTIVE ARRAY MMSE CANCELLER / VITERBI EQUALIZER Richard M Friedman Dr. Yeshkel Bar-Ness, Thesis Advisor Date Distinguished Professor, Department of Electrical and Computer Engineering, NJIT Dr Alexander Haimovich , Committee Member Date Professor, Department of Electrical and Computer Engineering, NJIT Dr Ali Abdi, Committee Member Date Assistant Professor, Department of Electrical and Computer Engineering, NJIT BIOGRAPHICAL SKETCH Author: Richard M Friedman Degree: Master of Science Date: May 2003 Undergraduate and Graduate Education: • Master of Science in Electrical Engineering, New Jersey Institute of Technology, Newark, NJ, 2003 • Bachelor of Science in Electrical Engineering, New Jersey Institute of Technology, Newark, NJ, 1993 Major: Electrical Engineering Presentations and Publications: R. Friedman, Y. BarNess, "Combined Channel Modified Adaptive Array MMSE Canceller and Viterbi Equalizer for Interference with Delay Spread," VTC 2001 Spring, pp. 209-213, Rhodes Island, Greece, May 6-9, 2001. R. Friedman, Y. BarNess, "Combined Channel Modified Adaptive Array MMSE Canceller and Viterbi Equalizer," ISSSTA 2002, Prague, Czech Republic, Sept., 2002.