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Publications (21)
Multi-path routing has a potential to increase data rate of wireless ad-hoc network by aggregating capacity of individual paths. However such paths are subject to inter-path interference. To minimize degradation of the network capacity caused by interference one or another path selection criteria can be used. We propose criteria on how to choose th...
Most of the IP network impairments can cause packet loss in streaming video resulting in visible picture quality degradation on receiver screen. The type and degree of degradation depends on the video packet encapsulation and encoding technique. Experiment was set up to evaluate influence of packet loss on picture quality for several video scenes....
Advances in video technologies combined with increased usage of synthetic video artifacts even in natural video scenes may cause problems in subjective perception of quality. In this paper investigation is done on how subjective quality assessment scores depend on technical specifications of video interface (YPbPr, YCbCr and YIQ) and video content...
Transmission and routing of video data over Mobile ad-hoc networks (MANETs) is a complicated task because of the unstable nature and limited throughput of such networks. To improve the performance, a multi-stream video coding and transmission over several paths is used. Network parameters determining quality of video transmission (bandwidth, delay,...
Transmission and routing of video data over Mobile ad-hoc networks (MANETs) is a complicated task because of the unstable nature and limited throughput of such networks. To improve the performance, a multi-stream video coding and transmission over several paths is used. Network parameters determining quality of video transmission (bandwidth, delay,...
R. Pauliks, I. Slaidins. Impact of Video Content and Technical Specifications on Subjective Quality Assessment // Electronics and Electrical Engineering. - Kaunas: Technologija, 2012. - No. 6(122). - P. 91-96. Replacement of traditional analog TV broadcasting services with various video services based on new advanced digital technologies not always...
This paper reports on the modelling of a university co-operation project with the goal of creating a mutually beneficial e-learning capacity. The results are analysed from the governance (management) perspective. The present situation in universities could be characterised as follows:
Video streaming over wireless ad-hoc networks containing mobile nodes is a quite complicated task because existing transport and routing protocols are not well suited for such task. In 802.11 standard MAC level transport protocol uses Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) method. This collision avoidance method as a side...
In this paper we present the performance estimation for mobile environment wideband radio channel based on multiple antenna system. Wireless communications systems equipped with multiple antennas at both the transmitter and receiver have been widely stated as an important technology to improve performance. These so-called multiple-input multiple-ou...
Existing e-learning and knowledge management projects have shown that m-learning and mobile knowledge management may have real and valuable contribution to development of knowledge society. The paper analyses and compares different m-learning and mobile knowledge management introduction scenarios based on evidence found in the literature. Special e...
In this work the methodology of measurement data processing and noise component identification is presented leading to extraction of 1/f
noise parameters on the background of RTS and G‐R noise. For identification of RTS noise presence deviation from the Gaussian probability density distribution and matched optimum filtering is used. Only after the...
High accuracy of an experimental investigation of noise features of semiconductor devices and materials in low frequency region is very important for reaching deep understanding of noise features It will enable precise extracting of essential noise parameters and modelling noise behaviour of real devices.
In this paper measurement accuracy of 1/f a...
Owing to participation of Latvian and Swedish scientists in the field of chemically sensitive FET and MOS structures it was possible to utilize the technological facilities of the Microelectronics enterprise in Latvia in making an integrated smart sensor as a matrix of chemically sensitive FETs by using silicon based microtechnology. Thereby the fi...
In many countries with a fast growing economies shortage of engineers is observed. According to the survey made in Latvia just 30% of industry demand of the Electronics Engineers is covered by t he university graduates. If nothing will change the sh ortage will increase in forthcoming years. Profession of t he Electronics Engineer is not popular in...
Case study is presented on how training in information literacy is integrated in a study programme of Telematics students of Faculty of Radioengineering and Telecommunications of Riga Technical University. It is very important to educate young people in an environment that will be widely used in Information Society. Information literacy distance co...
