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Full-Text Articles in Computer Engineering

Design And Development Of A Testbed Prototype For Cognitive Radio Transmission Over Tv White Space, Dewan Md Ariful Hassan Jan 2019

Design And Development Of A Testbed Prototype For Cognitive Radio Transmission Over Tv White Space, Dewan Md Ariful Hassan

Electronic Theses and Dissertations

Considering the ever-increasing demand and the associated high costs of wireless electromagnetic spectrum, technologies that can facilitate efficient spectrum utilization are of utmost importance. Cognitive radio (CR), in conjunction with TV White Spaces (TVWS), can be a viable solution, where unlicensed or secondary users can opportunistically use the not-currently-in-use, aka idle, TV channels registered to licensed or primary users. This thesis focuses on the design and development of a testbed prototype for real-time testing of secondary user transmission in TVWS. Once an unused TV channel has been identified, our system uses that idle channel for transmitting and receiving signals. The ...


Acceleration Of K-Nearest Neighbor And Srad Algorithms Using Intel Fpga Sdk For Opencl, Liyuan Liu Mar 2018

Acceleration Of K-Nearest Neighbor And Srad Algorithms Using Intel Fpga Sdk For Opencl, Liyuan Liu

Electronic Theses and Dissertations

Field Programmable Gate Arrays (FPGAs) have been widely used for accelerating machine learning algorithms. However, the high design cost and time for implementing FPGA-based accelerators using traditional HDL-based design methodologies has discouraged users from designing FPGA-based accelerators. In recent years, a new CAD tool called Intel FPGA SDK for OpenCL (IFSO) allowed fast and efficient design of FPGA-based hardware accelerators from high level specification such as OpenCL. Even software engineers with basic hardware design knowledge could design FPGA-based accelerators. In this thesis, IFSO has been used to explore acceleration of k-Nearest-Neighbour (kNN) algorithm and Speckle Reducing Anisotropic Diffusion (SRAD) simulation ...


Investigating Potential Combinations Of Visual Features Towards Improvement Of Full-Reference And No-Reference Image Quality Assessment, Ashirbani Saha Jan 2015

Investigating Potential Combinations Of Visual Features Towards Improvement Of Full-Reference And No-Reference Image Quality Assessment, Ashirbani Saha

Electronic Theses and Dissertations

Objective assessment of image quality is the process of automatic assignment of a scalar score to an image such that the rating or score corresponds to the score provided by the Human Visual System (HVS). Despite extensive studies since the last two decades, it remains a challenging problem in image processing due to the presence of different types of distortions and limited knowledge of the HVS. Existing approaches for assessing the perceptual quality of images have relied on a number of methodologies that directly apply known properties of the HVS, construct hypotheses considering the HVS as a blackbox and use ...