Now showing items 247-266 of 1736

    • Coherent Image Processing using Quaternion Wavelets 

      Chan, Wai Lam; Choi, Hyeokho; Baraniuk, Richard G. (2005-08-01)
      We develop a quaternion wavelet transform (QWT) as a new multiscale analysis tool for geometric image features. The QWT is a near shift-invariant, tight frame representation whose coefficients sport a magnitude and three ...
    • Coherent Multiscale Image Processing using Quaternion Wavelets 

      Chan, Wai Lam; Choi, Hyeokho; Baraniuk, Richard G. (2006-10-01)
      The quaternion wavelet transform (QWT) is a new multiscale analysis tool for geometric image features. The QWT is a near shift-invariant tight frame representation whose coefficients sport a magnitude and three phases: ...
    • Coherent multiscale image processing using quaternion wavelets 

      Chan, Wai Lam (2006)
      This thesis develops a quaternion wavelet transform (QWT) as a new multiscale analysis tool for geometric image features. The QWT is a near shift-invariant tight frame representation whose coefficients sport a magnitude ...
    • Collective antenna effects in the terahertz and infrared response of highly aligned carbon nanotube arrays 

      Ren, L.; Zhang, Q.; Pint, C.L.; Wójcik, A.K.; Bunney, M. Jr; Arikawa, T.; Kawayama, I.; Tonouchi, M.; Hauge, R.H.; Belyanin, A.A.; Kono, J. (2013)
      We study macroscopically aligned single-wall carbon nanotube arrays with uniform lengths via polarization-dependent terahertz and infrared transmission spectroscopy. Polarization anisotropy is extreme at frequencies less ...
    • Communication Processors 

      Rajagopal, Sridhar; Cavallaro, Joseph R. (2005-07-01)
      Communication processors are processors with specific optimizations to support communication sys-tems. Communication processors exist in a wide variety of forms and can be categorized based on the communication system, ...
    • Community Driven Digital Signal Processing Laboratories in Connexions 

      Baraniuk, Richard G.; Choi, Hyeokho; Jones, Douglas L.; Potter, Lee (2004-06-01)
      The conventional textbook is largely inadequate for digital signal processing (DSP) laboratory education due to inherent factors such as a small and fragmented market and rapid hardware obsolescence. Freely available ...
    • Compact Hardware Accelerator for Functional Verification and Rapid Prototyping of 4G Wireless Communication Systems 

      Guo, Yuanbin; McCain, Dennis (2004-11-01)
      In this paper, we propose an FPGA-based hardware accelerator platform with Xilinx Virtex-II V3000 in a compact PCMCIA form factor. By partitioning the complex algorithms in the 4G simulator to the hardware accelerator, ...
    • Compact solar autoclave based on steam generation using broadband light-harvesting nanoparticles 

      Neumann, Oara; Feronti, Curtis; Neumann, Albert D.; Dong, Anjie; Schell, Kevin; Lu, Benjamin; Kim, Eric; Quinn, Mary; Thompson, Shea; Grady, Nathaniel; Nordlander, Peter; Oden, Maria; Halas, Naomi J. (7/16/2013)
      The lack of readily available sterilization processes for medicine and dentistry practices in the developing world is a major risk factor for the propagation of disease. Modern medical facilities in the developed world ...
    • A comparative study of multiple accessing schemes 

      Erkip, Elza; Aazhang, Behnaam (1997-11-20)
      We compare the performance of different accessing schemes (frequency division, time division and code division) for the uplink in a wireless communication system. We assume an additive white Gaussian noise channel with ...
    • Comparing and Combining Read Miss Clustering and Software Prefetching 

      Pai, Vijay S.; Adve, Sarita V. (2001-09-20)
      None
    • Comparison of laser-produced plasma target materials for pumping the 109 nm xenon(2+) Auger laser 

      Dennis, Tasshi (1995)
      Short wavelength lasers have many potential applications in scientific and engineering fields. The goal of this research was to improve the output energy of the Xe$\sp{2+}$ 109 nm laser. We compared cadmium, copper, gold, ...
    • COMPARISON OF TWO NOVEL LIST SPHERE DETECTOR ALGORITHMS FOR MIMO-OFDM SYSTEMS 

      Myllylä, Markus; Silvola, Pirkka; Juntti, Markku; Cavallaro, Joseph R. (2006-09-01)
      In this paper, the complexity and performance of two novel list sphere detector (LSD) algorithms are studied and evaluated in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) system. ...
    • Competitive Parallel Disk Prefetching and Buffer Management1 

      Barve, Rakesh; Kallahalla, Mahesh; Varman, Peter J. (2000)
      We provide a competitive analysis framework for online prefetching and buffer management algorithms in parallel IrO systems, using a read-once model of block references. This has widespread applicability to key IrO-bound ...
    • Compiler Driven Architecture Design Space Exploration for DSP Workloads: A Study in Software Programmability Versus Hardware Acceleration 

      Brogioli, Michael C.; Cavallaro, Joseph R. (2009-11-01)
      Wireless communications and video kernels contain vast instruction and data level parallelism that can far outstrip programmable high performance DSPs. Hardware acceleration of these bottlenecks is commonly done at the ...
    • Complex Wavelet Transforms with Allpass Filters 

      Fernandes, Felix; Selesnick, Ivan W.; van Spaendonck, Rutger; Burrus, C. Sidney (2003-08-20)
      Complex discrete wavelet transforms have significant advantages over real wavelet transforms for certain signal processing problems. Two approaches to the implementation of complex wavelet transforms have been proposed ...
    • Complexed Multifunctional Metallic and Chalcogenide Nanostructures as Theranostic Agents 

      Young, Joseph (2013-12-03)
      Nanostructures have attracted substantial attention due to their distinctive properties and various applications. Nanostructures consisting of multiple morphologies and/or materials have recently become the focus of intense ...
    • Complexity Analysis of MMSE Detector Architectures for MIMO OFDM Systems 

      Myllylä, Markus; Hintikka, Juha-Matti; Cavallaro, Joseph R.; Juntti, Markku; Limingoja, Matti; Byman, Aaron (2005-11-01)
      In this paper, a field programmable gate array (FPGA) implementation of a linear minimum mean square error (LMMSE) detector is considered for MIMO-OFDM systems. Two square root free algorithms based on QR decomposition ...
    • Component-based adaptation for mobile computing 

      de Lara, Eyal (2002)
      Component-based adaptation is a novel approach for adapting applications to the limited availability of resources such as bandwidth and power in mobile environments. Component-based adaptation works by calling on the ...
    • Compound Poisson Cascades 

      Chainais , Pierre; Riedi, Rudolf H.; Abry, Patrice (2002-05-01)
      Multiplicative processes and multifractals proved useful in various applications ranging from hydrodynamic turbulence to computer network traffic, to name but two. Placing multifractal analysis in the more general framework ...
    • Compressed Sensing for Imaging Applications 

      Takhar, Dharmpal (2008)
      Compressed sensing is a new sampling theory which allows reconstructing signals using sub-Nyquist measurements. This can significantly reduce the computation re­quired for both image and video whether during acquisition ...