Browsing by Author "Bruton, LT"

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  • A 3-D sparse FIR frustum filter for enhancing broadband plane waves 
    Wijesekara, RT; Edussooriya, CUS; Bruton, LT; Agathoklis, P [Article-Full-text]
    A 3-D FIR frustum filter having sparse coefficients is proposed for enhancing broadband plane waves received by uniform aperture arrays. Motivated by the design technique of 1-D interpolated FIR filters, the proposed ...
  • A 480mhz roach-2 fpga realization of 2-phase 2-d iir beam filters for digital rf apertures 
    Seneviratne, V; Madanayake, A; Bruton, LT [Conference-Full-text]
    RF antenna array beamforming based on electronically steerable wideband phased-array apertures find applications in communications, radar, imaging and microwave sensing. High-bandwidth requirements for wideband RF ...
  • Delta-sigma noise shaping in 2d spacetime for uniform linear aperture array receivers 
    Handagala, S; Madanayake, A; Belostotski, L; Bruton, LT [Conference-Full-text]
    A multi-dimensional noise-shaping method based on delta-sigma modulation has been proposed. This method extends delta-sigma modulation into the two-dimensional (2-D) case (space, time). The proposed noise-shaping method ...
  • Multi-depth filtering and occlusion suppression in 4-D light fields: Algorithms and architectures 
    Liyanage, N; Wijenayake, C; Edussooriya, C; Madanayake, A; Agathoklis, P; Bruton, LT; Ambikairajah, E [Article-Full-text]
    Low-complexity signal processing algorithms and reconfigurable digital hardware architectures are proposed for multi-depth filtering and occlusion suppression in 4-D light fields (LFs). The proposed multi-depth-pass (MDP) ...
  • Multi-Volumetric refocusing of light fields 
    Jayaweera, SS; Edussooriya, CUS; Wijenayake, C; Agathoklis, P; Bruton, LT [Article-Full-text]
    Geometric information of scenes available with fourdimensional (4-D) light fields (LFs) paves the way for postcapture refocusing. Light field refocusing methods proposed so far have been limited to a single planar or a ...
  • An Overview of multi-dimensional RF signal processing for array receivers 
    Madanayake, A; Wijenayake, C; Belostotski, L; Bruton, LT [Conference-Abstract]
    In this review paper, recent advancements in multidimensional (MD) spatio-temporal signal processing for highlydirectional radio frequency (RF) antenna array based receivers are discussed. MD network-resonant beamforming ...
  • Real-time 2-d fir trapezoidal digital filters for 2.4 ghz aperture receiver applications 
    Ariyarathna, V; Coutinho, VA; Pulipati, S; Madanayake, A; Wijesekara, RT; Edussooriya, CUS; Bruton, LT; Gunaratne, TK; Cintra, RJ [Conference-Full-text]
    This paper presents the implementation of a twodimensional (2-D) finite-impulse-response (FIR) trapezoidal filter based beamforming array receiver. A 2.4 GHz 16-element receivemode IQ array is designed and used for ...
  • Real-time light field signal processing using 4D/5D linear digital filter FPGA circuits 
    Edussooriya, CUS; Wijenayake, C; Madanayake, A; Liyanage, N; Premaratne, S; Vorhies, JT; Dansereau, DG; Agathoklis, P; Bruton, LT [Article-Full-text]
    Light fields (LFs) and light field videos (LFVs) capture both angular and spatial variation of light rays emanating from scenes. This richness of information leads to novel applications such as post-capture refocusing, ...
  • Scanned–array audio beamforming using 2nd− and 3rd–order 2D IIR beam filters on FPGA 
    Ganganath, N; Attanayake, G; Bandara, TY; Ilangakoon, P; Rodrigo, BKRP; Madanayake, A; Bruton, LT [Conference-Abstract]
    Real-time scanned-array direct-form-I hardware implementations of two-dimensional (2D) infinite impulse response (IIR) frequency-planar beam plane-wave (PW) filters have potentially wide applications in the directional ...