Languages

Ερευνητικές Περιοχές

  • Adaptive Signal Processing and System Identification
    • Development of efficient algorithmic techniques (serial or parallel)
    • Block and frequency domain quasi-Newton algorithms
    • Fast solution methods for large systems
    • Numerically robust adaptive least squares algorithms

    • Theoretical convergence analysis and numerical behavior study
    • Identification of systems with unknown impulse response
    • High resolution spectral analysis
    • Adaptive Beamforming
    • Efficient Techniques for Direction of Arrivals Estimation and Tracking
  • Advanced signal processing techniques for digital communications
    • Efficient decision feedback equalization for high-speed communication applications
    • Efficient semiblind parametric estimation of wireless communications channels
    • Joint semiblind channel estimation and robust equalization
    • Robust iterative (turbo) techniques for joint channel estimation and equalization

    • Protocol-aided design of equalizers in high-speed wireless networks
    • Channel estimation and equalization in MIMO/Multicarrier systems
    • Blind Adaptive Techniques for Non-linear Channels
    • Cooperative and Opportunistic Communications
  • Modern Design of FIR Digital Filters
    • Development of L2 - based methods for the design of 1-D FIR filters with reduced Gibb’s effects
    • Design of 2-D and N-D filters via transformations
    • Development of new initialization schemes for the acceleration of the Remez exchange algorithm
  • Sensor Networks
    • Source localization and tracking
    • Cooperative communication strategies
  • Image Processing and Analysis Applications
    • Image Registration and Mosaicing
    • Multispectral imaging
    • 3-D object reconstruction by a sequence of images
    • Digital Image Watermarking
  • Biomedical Signal Processing
    • Blood volume estimation using new bio-impedance measurements techniques
    • Detection of visually evoked potentials
  • Speech Processing
    • Human voice modeling
    • Speech data compression for speech transmission through narrowband channels
    • Speech segmentation
    • Speaker identification and verification methods