Ethernet based real time communications for embedded systems

Yılmaz, Ozan
Fast paced improvement of Ethernet technology has also received attention in the industry field like it did in other fields and ways of usage have started to be studied. As it is understood that the standard Ethernet protocols cannot be used due to the unsatisfied real time requirements, industrial and academic researchers have started to develop solutions to overcome this deficiency. In this thesis, the real hardware adaptations of Real Time Ethernet and RTXX protocol algorithms are implemented and their behaviors on the hardware are observed. Each parameter that affects the system’s real time behavior is individually examined and the solution proposals are discussed.


Direct perception of traversibility affordance on range images through learning on a mobile robot
Uğur, Emre; Şahin, Erol; Department of Computer Engineering (2006)
In this thesis, we studied how physical affordances of the environment, such as traversibility for a mobile robot, can be learned. In particular, we studied how the physical properties of the environment, as acquired from range images obtained from a 3D laser scanner mounted on a mobile robot platform, can specify the traversibility affordance. A physics based simulation environment is used during exploration trials, where the traversibility affordances and the relevant features for each behavior are learne...
Fairness in Wireless Networks: Issues, Measures and Challenges
Shi, Huaizhou; Prasad, R. Venkatesha; Onur, Ertan; Niemegeers, I. G. M. M. (Institute of Electrical and Electronics Engineers (IEEE), 2014-01-01)
The pervasiveness of wireless technology has indeed created massive opportunity to integrate almost everything into the Internet fabric. This can be seen with the advent of Internet of Things and Cyber Physical Systems, which involves cooperation of massive number of intelligent devices to provide intelligent services. Fairness amongst these devices is an important issue that can be analysed from several dimensions, e. g., energy usage, achieving required quality of services, spectrum sharing, and so on. Th...
Cooperative Communications in Future Home Networks
Genc, Zulkuf; Rizvi, Umar H.; Onur, Ertan; Niemegeers, Ignas (Springer Science and Business Media LLC, 2010-05-01)
The basic idea behind cooperative communications is that mobile terminals collaborate to send data to each other. This effectively adds diversity in the system and improves the overall performance. In this paper, we investigate the potential gains of cooperative communication in future home networks. We derive analytical expressions for the error probability of binary phase shift keying (BPSK) signals over Nakagami-m fading channels in a multi relay communication network. Following to the analytical study, ...
Efficient scheduling in distributed computing on grid
Kaya, Özgür; Bozyiğit, Müslim; Department of Computer Engineering (2006)
Today many computing resources distributed geographically are idle much of time. The aim of the grid computing is collecting these resources into a single system. It helps to solve problems that are too complex for a single PC. Scheduling plays a critical role in the efficient and effective management of resources to achieve high performance on grid computing environment. Due to the heterogeneity and highly dynamic nature of grid, developing scheduling algorithms for grid computing involves some challenges....
Performance Analysis of Quantized Uplink Massive MIMO-OFDM With Oversampling Under Adjacent Channel Interference
Üçüncü, Ali Bulut; Johansson, Hakan; Yılmaz, Ali Özgür (Institute of Electrical and Electronics Engineers (IEEE), 2020-02-01)
Massive multiple-input multiple-output (MIMO) systems have attracted much attention lately due to the many advantages they provide over single-antenna systems. Owing to the many antennas, low-cost implementation and low power consumption per antenna are desired. To that end, massive MIMO structures with low-resolution analog-to-digital converters (ADC) have been investigated in many studies. However, the effect of a strong interferer in the adjacent band on quantized massive MIMO systems have not been exami...
Citation Formats
O. Yılmaz, “Ethernet based real time communications for embedded systems,” M.S. - Master of Science, Middle East Technical University, 2010.