this paper describes the design and implementation of a reconfigurable, software-defined spectral channeliser for radio frequency (RF) spectrum sensing applications. the software-based design targets a parallel, multi...
详细信息
ISBN:
(纸本)9781538628874
this paper describes the design and implementation of a reconfigurable, software-defined spectral channeliser for radio frequency (RF) spectrum sensing applications. the software-based design targets a parallel, multi-core processor architecture in the form of a graphics processing unit (GPU) and incorporates a polyphase filter bank design. Our implementation provides continuous channelisation of RF intercept data across a scalable number of GPU processing engines. On modern generation GPUs, such as the Tesla K40c, we found that our GPU-hosted channeliser satisfies real-time processing requirements for a current microwave intercept receiver with electronic warfare applications. Specifically, a system with an instantaneous collection bandwidth of 500 MHz and a digital sample rate of 1.333 GSa/s. the configurable nature of our channeliser was not done at the expense of performance, in that a similar computational efficiency was achieved across multiple channel sizes. Our analysis also includes a profiling of the computational load on the GPU and comparing it to that of a single core, high performance, CPU implementation. We found that we were able to achieve up to 40x improvement in performance with our implementation on a single GPU and this result scaled linearly when additional GPU resources were utilised.
We propose a hardware performance estimation flow for fast design space exploration, based on worst-case execution time analysis algorithms for software analysis. Test cases on some real-world applications show that o...
详细信息
ISBN:
(纸本)0780394518
We propose a hardware performance estimation flow for fast design space exploration, based on worst-case execution time analysis algorithms for software analysis. Test cases on some real-world applications show that our flow provides a tight upper bound of the execution time, and many useful hints to the designer.
Parallel disk systems are capable of fulfilling rapidly increasing demands on both large storage capacity and high I/O performance. However, it is challenging to significantly increase disk I/O bandwidth for data-inte...
详细信息
Parallel disk systems are capable of fulfilling rapidly increasing demands on both large storage capacity and high I/O performance. However, it is challenging to significantly increase disk I/O bandwidth for data-intensive workloads due to (1) reliability and instant processing of data requests under dynamic workload conditions, and (2) the optimum tradeoff between system scalability and data reliability in data-intensive systems. To increase computing performance and reduce power consumption, graphics Processing Units (GPUs) will be used. As the architectures and data processing algorithms for GPU-based parallel disk systems are still in their infancy, this research will develop novel hardware and software architectures that include parallel GPU, flash disks, and disk arrays for data-intensive applications. (c) 2014 Published by Elsevier B.V.
GPU programming can present difficulties in regards to the availability of interfaces on all device compatible platforms. Furthermore, APIs designed specifically with cross-platform use in mind have shown tendencies t...
详细信息
Texture is a fundamental component of computergraphics. Virtual texture technology is essential for facilitating large-scale texture loading and real-time rendering of natural terrain. To address the limitations pose...
详细信息
Todays vehicles are more and more equipped with video cameras. these cameras are used e.g. for lane and parking assist systems. For the localization of the vehicle in the world the Global Positioning System is widely ...
详细信息
ISBN:
(纸本)9780889868243
Todays vehicles are more and more equipped with video cameras. these cameras are used e.g. for lane and parking assist systems. For the localization of the vehicle in the world the Global Positioning System is widely used. Unfortunately, GPS is very imprecise and insufficient for many driver assistance applications. To overcome this limitation, a more precise localization using a different approach has to be found. High quality localization sensors are already available on the market but still too expensive for mass integration in automobiles. the aim is to extract additional information from already established car equipment and to use it for precise localization. Our approach combines map information with extracted image features using a model based algorithm.
Over the past years, there has been much interest shown in bistatic radar using existing non-cooperative transmitters. Previous studies within this area have first of all investigated analogue television based bistati...
详细信息
A method for calculating global illumination in dynamic 3D scenes with functionally defined surfaces is presented. In many applications, such as video games, simulators, etc., methods for calculating real-time global ...
详细信息
computergraphics concepts have a high visual component. For that reason, teaching this subject should be enriched withthe use of small applications showing concepts like near and far plane or objects hierarchy in re...
详细信息
ISBN:
(纸本)1595936033
computergraphics concepts have a high visual component. For that reason, teaching this subject should be enriched withthe use of small applications showing concepts like near and far plane or objects hierarchy in real time. However, their development is usually time consuming. In this paper we propose the use of an open source engine called Nebula to create such examples. We will show that Nebula applications are easy to develop and modify, presenting three small applicationsthat help to explain important concepts in computergraphics curriculum.
Within the transformation and digitalization in the area of smart public buildings and infrastructures, finding, selecting and implementing the "right" use cases is an actual challenge for cities, public uti...
详细信息
暂无评论