Bar-Ness, Yeheskel

Title: Distiguished Professor
Office: 101 Faculty
Phone: 973-596-3520
Dept: Electrical Computer Eng.

About Me

Yeheskel Bar-Ness received the B.Sc. and M.Sc. degrees in electrical engineering from the Technion, Haifa, Israel, and the Ph.D. degree in applied mathematics, Brown University, Providence, RI.

Currently, he is a Distinguished Professor of Electrical and Computer Engineering and Foundation Chair of Center for Communication and Signal Processing Research (CCSPR) at the New Jersey Institute of Technology (NJIT), Newark. He worked for the Nuclear Medicine Department, Elscint Ltd., Haifa, as a Chief Engineer in the field of control, and image and data processing. In 1973, he joined the School of Engineering, Tel-Aviv University, where he held the position of Associate Professor of Control and Communications. Between September 1978 and September 1979, he was a Visiting Professor with the Department of Applied Mathematics, Brown University. He was on leave with the University of Pennsylvania and Drexel University, Philadelphia, PA. He came to NJIT from AT&T Bell Laboratories in 1985. Between September 1993 and August 1994, he was on sabbatical with the Telecommunications and Traffic Control Systems Group, Faculty of Electrical Engineering, Delft University of Technology, Delft, The Netherlands. Between September 2000 and August 2001, he was on sabbatical at Stanford University, Stanford, CA. His current research interests include adaptive multiuser detection, array processing and interference cancellation, and wireless mobile and personal communications.

Dr. Bar-Ness was an Area Editor for IEEE TRANSACTIONS ON COMMUNICATIONS (Transmission Systems) and Editor for Adaptive Processing Systems. He is the Founder and Editor-in Chief for IEEE COMMUNICATIONS LETTERS. He also was Editor for Wireless Personal Communications, an international journal. He was Chairman of the Communication Systems Committee, and a Vice Chair of the Communications Theory Committee of the IEEE Communication Society. He served as the General Chair of the 1994 and 1999 Communication Theory Mini-Conference. He was also the Technical Chair for the IEEE Sixth International Symposium on Spread Spectrum Techniques and Applications (ISSSTA 2000). He is a recipient of the Kaplan Prize (1973), which is awarded annually by the government of Israel to the ten best technical contributors, of the IEEE Communication Society Publication Exemplary Service Award, and was selected as NJ 2006 "Inventor of the year" recognized for "System and method to enhance wireless/mobile communication".


  • Technion, Israel Institute of Technology, B.Sc., 1958.
  • Technion, Israel Institute of Technology, M.S., 1963.
  • Brown University, Ph.D., 1969.

Classes Taught

ECE 755

Prerequisites: ECE 640 and ECE 673, equivalent, or instructor approval.


  • An overview of basic PAM Techniques
  • Pulse shaping
  • Baseband PAM
  • Passband PAM
  • Alphabet design
    • Differential decoding and DPSK
    • Spectral efficiency
  • The matched filter - isolated pulse case
  • Spread spectrum
  • Orthogonal multipulse modulation
  • Combined PAM and multipulse modulation


  • Detection of a single real-value symbol
  • Detection of a signal vector
  • Known signal in Gaussian noise
  • Optimal incoherent detection
  • Optimal detectors for PAM with ISI
  • Sequence detection - The Viterbi Algorithm


  • Optimal zero-forcing equalization
  • Generalized equalization method
  • Fractionally spaced equalizer
  • Transversal filter equalizer
  • Adaptive equalizer


  • Spectral control
  • Error control
    • Block codes
    • Convolution codes
  • Signal-space coding
    • Trellis codes
    • Coset codes
    • Signal space doping and ISI


  • Lee & Messerschmitt, ``Digital Communication,´´ 2nd edition,
    Kluwer Academic Publisher
  • J.G. Proakis, ``Digital Communications,´´ 3rd edition, McGraw-Hill

ECE 757

Prerequisites: ECE 742, equivalent, or instructor approval.


Due to the increasing demand for personal, mobile and indoor communication systems in recent years, wireless communication has become a very hot topic within the filed of communication. Wireless communication is projected to become a multi-billion-dollar industry in the next few years. Two generations of systems already exist. The third generation is under research and expected to be standardized very shortly. The topic is of interest to a few of the faculty at the Center for Communications and Signal Processing Research. Thus is is natural to have this course as part of the graduate course curricula.

Course Outline


  • Introduction to Digital Cellular Radio
    • Principles of Multiple Access Communication
    • First generation mobile radio systems
    • Digital cellular mobile radio systems/FDMA and TDMA digital links
    • Second generation mobile radio systems: Qualcomm CDMA
    • Cordless telecommunications: The CT2 and European DECT Systems (1 60)
  • Analytical characterization of the mobile radio channel
    • Channel representation, types and physical description
    • Classification of channels, time and frequency dispersion, selective fading
    • Linear time-variant channel; the Bello system function
  • Fundamentals of diversity systems and Interleaving Techniques
  • Multiuser CDMA systems and principles
    • Introduction to spread spectrum
    • Pseudorandom sequences
    • Modulator output statistics in Multiple Access Interference; the QPSK case
    • Error probability for BPSK and QPSK in additive noise and interference
    • Modulation and demodulation of spread spectrum signals in multipath and MAI, Chernoff and Bhattacharya bounds
    • Chernoff bound for time synchronous MAI
    • Multipath signal structure, pilot-aided coherent, multipath demodulation
    • Noncoherent reception, M-ary orthogonal modulation
  • Interference Cancellation in multiuser CDMA system


  • W.C. Lee, ``Mobile Cellular Telecommunication,´´ 2nd edition, McGraw-Hill
  • K. Feher, ``Wireless Digital Communication,´´ Prentice Hall
  • A. Viterbi, ``CDMA,´´ Prentice Hall
  • R. Steele, ``Mobile Radio Communication,´´ IEEE Press
  • G.S. Stuber, ``Principles of Mobile Communication,´´ Kluwer Academic Publishers

Research Interests

  • Adaptive array
  • Interference cancellation for personal, indoor and mobile radio communication (PIMRC)
  • Digital communication and signal processing
  • Surface acoustic wave application
  • Data compression and co-channel demodulation