Browsing George R. Brown School of Engineering by Title
Now showing items 41-60 of 2261
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A reconfigurable decoder architecture for wireless LAN and cellular systems
(2001)The rapid growth of wireless communications has led to the demand for communication devices which can support multiple standards and have the capability of switching from one to another on-the-fly. For instance, a device ... -
A Resource-Aware Streaming-based Framework for Big Data Analysis
(2015-12-02)The ever growing body of digital data is challenging conventional analytical techniques in machine learning, computer vision, and signal processing. Traditional analytical methods have been mainly developed based on the ... -
A sample realization approach for optimization of code division multiple access systems
(1994)Efforts in performance analysis of Code Division Multiple Access (CDMA) systems have concentrated on obtaining asymptotic approximations and bounds for system error probabilities. As such, these cannot capture the sensitivities ... -
A spectral encoding system based on planar waveguide integrated optics
(2001)The need for bandwidth at the access level has driven the development of many new multiple access schemes. This paper explores a spectral encoding scheme for Optical CDMA, in which bipolar communication is accomplished by ... -
A storage architecture for data-intensive computing
(2010)The assimilation of computing into our daily lives is enabling the generation of data at unprecedented rates. In 2008, IDC estimated that the "digital universe" contained 486 exabytes of data [9]. The computing industry ... -
A study of opportunistic relaying MAC protocol
(2005)Recent studies have shown a considerable interest in the development of Medium Access and Control (MAC) protocols for multi-rate wireless networks. The approach of sending the packet to the farthest possible node along the ... -
A study of the photodissociation dynamics of dimethylzinc and the implications for the growth of zinc selenide films
(1993)The dynamics of the ArF photodissociation of DMZn (dimethylzinc) have been studied. The implications of the results for the growth of ZnSe thin films are discussed. Time-resolved absorption profiles of ground state Zn and ... -
A universal hidden Markov tree image model
(1999)Wavelet-domain hidden Markov models have proven to be useful tools for statistical signal and image processing. The hidden Markov tree (HMT) model captures the key features of the joint density of the wavelet coefficients ... -
A wavelet-based approach to three-dimensional confocal microscopy image reconstruction
(2004)An algorithm based on the Haar wavelet basis and implementing an expectation maximization-maximum penalized likelihood estimator in 3-D is shown to provide dramatic improvement over traditional stopped-EM algorithms in ... -
Abdominal Fat Suspension Device for Maintaining Normal Cardiorespiratory Function in Patients Undergoing Conscious Sedation during Surgery: A Feasibility Study
(2014)Obese patients undergoing conscious-sedation surgery have increased perioperative morbidity because their excess abdominal tissue limits diaphragmatic excursion. We describe a simple device that might help attenuate this ... -
Accelerating Computer Vision Algorithms Using OpenCL Framework on Mobile Devices - A Case Study
(2013-06)Recently, general-purpose computing on graphics processing units (GPGPU) has been enabled on mobile devices thanks to the emerging heterogeneous programming models such as OpenCL. The capability of GPGPU on mobile devices ... -
Accuracy of In Vivo Multimodal Optical Imaging for Detection of Oral Neoplasia
(2012)If detected early, oral cancer is eminently curable. However, survival rates for oral cancer patients remain low, largely due to late-stage diagnosis and subsequent difficulty of treatment. To improve cliniciansﾒ ability to ... -
Accuracy of optical spectroscopy for the detection of cervical intraepithelial neoplasia without colposcopic tissue information; a step toward automation for low resource settings
(2012-04)Optical spectroscopy has been proposed as an accurate and low-cost alternative for detection of cervical intraepithelial neoplasia. We previously published an algorithm using optical spectroscopy as an adjunct to colposcopy and ... -
Accurate Quantification of Disease Markers in Human Serum Using Iron Oxide Nanoparticle-linked Immunosorbent Assay
(2016)Accurate and reliable quantification of biomarkers in the blood is essential in disease screening and diagnosis. Here we describe an iron oxide nanoparticle (IONP)-linked immunosorbent assay (ILISA) for detecting biomolecules ... -
Achievable Diversity and Multiplexing in Multiple Antenna Systems with Quantized Power Control
(2005-05-01)We consider a multiple antenna system with finite rate feedback, in which the quantized channel state information at the transmitter is used solely for temporal power control. We show that similar to systems without feedback, ... -
Achievable Rates for Arbitrary Network Topologies with â Cheapâ Nodes
(2003-05-01)In this paper, we derive achievable rates for arbitrary network topologies consisting of â cheapâ nodes. A node is labeled â cheapâ if its radio can only operate in TDD mode when transmitting and receiving in the ... -
Achromatized endomicroscope objective for optical biopsy
(2013)Currently, researchers and clinicians lack achromatized endomicroscope objectives that are as narrow as biopsy needles. We present a proof-of-concept prototype that validates the optical design of an NA0.4 objective. The ... -
Acousto-optic multiphoton laser scanning microscopy and multiphoton photon counting spectroscopy: Applications and implications for optical neurobiology
(2005)Multiphoton excitation of molecular probes has become an important tool in experimental neurobiology owing to the intrinsic optical sectioning and low light scattering it affords. Using molecular functional indicators, ... -
Active dielectric antenna on chip for spatial light modulation
(2012-11-14)Integrated photonic resonators are widely used to manipulate light propagation in an evanescently-coupled waveguide. While the evanescent coupling scheme works well for planar optical systems that are naturally waveguide ...
