Multimodal Subscriber Interfaces for Infocommunication Systems

The quality enhancement of infocommunication systems based on integration of semantically different information transmitted over different communication channels is discussed. The increase of the informational efficiency of the multimodal communication systems is provided by using multimodal subscriber interfaces, compared to traditional telecommunications. The proposed approach is new in the subject area and requires a variety of research studies to develop innovative elements of the theory of multimodal information transmission. A notion of information value is introduced in order to estimate and chose functional structures and parameters that possess the most favorable informational characteristics during development of multimodal communication systems

Modern digital technologies and telecommunications mechanisms in the implementation of socio-economic policy at the local and regional level

The purpose of the work is to modernize the organizational and economic support of the regional economy management processes based on digital technologie

Transmission Experiment of Bandwidth Compressed Carrier Aggregation in a Realistic Fading Channel

In this paper, an experimental testbed is designed to evaluate the performance of a bandwidth compressed multicarrier technique termed spectrally efficient frequency division multiplexing (SEFDM) in a carrier aggregation (CA) scenario1. Unlike orthogonal frequency division multiplexing (OFDM), SEFDM is a non-orthogonal waveform which, relative to OFDM, packs more sub-carriers in a given bandwidth, thereby improving spectral efficiency. CA is a long term evolution-advanced (LTE-Advanced) featured technique that offers a higher throughput by aggregating multiple legacy radio bands. Considering the scarcity of radio spectrum, SEFDM signals can be utilized to enhance CA performance. The combination of the two techniques results in a larger number of aggregated component carriers (CCs) and therefore increased data rate in a given bandwidth with no additional spectral allocation. It is experimentally shown that CA-SEFDM can aggregate up to 7 CCs in a limited bandwidth while CA-OFDM can only put 5 CCs in the same bandwidth. In this work, LTE-like framed CA-SEFDM signals are generated and delivered through a realistic LTE channel. A complete experimental setup is described together with error performance and effective spectral efficiency comparisons. Experimental results show that the measured BER performance for CA-SEFDM is very close to CA-OFDM and the effective spectral efficiency of CA-SEFDM can be substantially higher than that of CA-OFDM

Space experiment "Kontur-2": Applied methods and obtained results

Space experiment "Kontur-2" aboard the International Space Station is focused on the transfer of information between station and on-ground robot. Station's resources are limited, including communication ones. That is why for the space experiment “Kontur-2” it was decided to use the methods of priority traffic management. New access control mechanisms based on these methods are researched. The usage of the priority traffic processing methods allows using more efficiently the bandwidth of receiving and transmitting equipment onboard the International Space Station through the application of randomized push-out mechanism. The paper considers methods applied for traffic management and access control during international space experiment “Kontur-2” performed aboard the ISS. The obtained results are also presented

A Balanced Battery Usage Routing Protocol to Maximize Network Lifetime of MANET Based on AODV

International audienceEnergy efficiency is a critical issue for battery-powered mobile devices in ad hoc networks. Failure of node or link allows re-routing and establishing a new path from source to destination which creates extra energy consumption of nodes, sparse network connectivity and a more likelihood occurrences of network partition. Routing based on energy related parameters is one of the important solutions to extend the lifetime of the network. In this paper, we are designing and evaluating a novel energy aware routing protocol called a balanced battery usage routing protocol (BBU) which uses residual energy, hop count and energy threshold as a cost metric to maximize network life time and distribute energy consumption of Mobile Ad hoc Network (MANET) based on Ad hoc on-demand Distance Vector (AODV).The new protocol is simulated using Network Simulator-2.34 and comparisons are made to analyze its performance based on network lifetime, delivery ratio, normalized routing overhead, standard deviation of residual energy of all Nodes and average end to end delay for different network scenarios. The results show that the new energy aware algorithm makes the network active for longer interval of time once it is established and fairly distribute energy consumption across nodes on the network

The M3 architecture for smart spaces: Overview of semantic information broker implementations

A smart space enhances a networked computing environment by enabling information sharing for a multitude of local digital devices and global resources from the Internet. We consider the M3 architecture (multi-device, multi-vendor, multi-domain) for creating smart spaces, which integrates technologies from two innovative concepts: the Semantic Web and the Internet of Things. Our research focus is on analyses of the capabilities of Smart-M3 platform, which provides software implementations for such a central element of an M3 smart space as Semantic Information Broker (SIB). The paper presents a state-of-the-art and contributes our systematized vision on the SIB design and implementation. The analyzed open source SIB implementations include the original Smart-M3 piglet-based SIB, its optimized descendant RedSIB, OSGi SIB for Java devices, pySIB for Python devices, and CuteSIB for Qt devices. We also analyze the design of proprietary or incomplete SIB implementations: RIBS for embedded devices and ADK SIB built upon the OSGi framework with integration in the Eclipse Integrated Development Environment. The theoretical study is augmented with experimental evaluation of available SIB implementations

Build an app and they will come? Lessons learnt from trialling the GetThereBus app in rural communities

Acknowledgements The research described here was supported by the award made by the RCUK Digital Economy programme to the dot.rural Digital Economy Hub; award reference: EP/G066051/1.Peer reviewedPostprin

Разработка модельно-алгоритмического обеспечения управления распределенными модулями интеллектуального зала

The software ability to analyze current operating conditions, including a current state of a user, a physical environment, computing resources, as well as dynamically adaptation of the scenario of interaction to the user, is a one of the main requirements in the development of smart space prototypes. Control of a set of software and hardware modules involved in the smart space is difficult with increasing of tasks and number of users, so mathematical and software tools, which implement control of distributed modules, are required. The paper describes the structure of the model for distributed modules control in a smart meeting room as well as used multimodal interfaces for natural human-computer interaction.Способность приложений анализировать текущие условия эксплуатации, в том числе, текущее состояние пользователя, физического окружения, вычислительных ресурсов, и динамически адаптировать сценарий взаимодействия с пользователем является одним из главных требований при разработке прототипов интеллектуальных пространств. С увеличением решаемых задач и числа обслуживаемых пользователей становится затруднительным держать под контролем множество программных и аппаратных модулей, задействованных в интеллектуальном пространстве, поэтому необходимо математическое обеспечение и программные средства, реализующие контроль совместной работы распределенных модулей. В статье описывается разработанная структура модели управления распределенными модулями интеллектуального зала и используемые многомодальные интерфейсы для обеспечения естественности человеко-машинного взаимодействия