In the paper we proposed traffic class dependent (TCD) routing, which has the potential to differentiate between traffic classes using different optimization criteria in route calculation. The performance of TCD routing was evaluated for different traffic scenarios using an empirical traffic source model derived from the real backbone Internet traffic trace and compared with results obtained with equivalent Poisson traffic as a reference point. Performance analysis, in terms of average packet delay, normalized data throughput, and normalized link load was considered.
COBISS.SI-ID: 17961767
In the paper the performance of different scheduling policies in conjunction with adaptive routing procedures in the intersatellite link network of a packet-switched non-geostationary satellite system was analyzed. The simulation results indicated that differentiated treatment of traffic using traffic class dependent routing and fair scheduling policies provides a significant improvement in overall performance for all traffic classes.
COBISS.SI-ID: 18484263
An overview of CAPANINA, a project funded by the European Commission's 6th Framework Programme, is presented. The project is developing communications technologies for use with aerial platforms with the aim of integrating users in hard to reach areas and those disadvantaged by geography into the wider broadband network. Specific aspects covered include broadband applications and services selection, along with appropriate integrated delivery configurations to deliver the required capacity and upgradeability.
COBISS.SI-ID: 19422503
In the paper we presented new improved algorithm to adjust the coding/modulation (CM) scheme in a multiple-input multiple-output (MIMO) wireless communication system. The CM schemes elected for each transmitter are determined by a recursive procedure at the receiver, taking into account estimated signal-to-noise ratio and the properties of available CM schemes. The algorithm performance was tested with different detection algorithms: pseudo-inverse (PINV), V- BLAST and maximum likelihood (ML).
COBISS.SI-ID: 18931495
In the paper adaptive per-hop routing in the intersatellite link (ISL) network of a packet-switched, nongeostationary satellite system was addressed. In particular, a traffic class dependent (TCD) routing was proposed with different optimization criteria for different traffic classes. Furthermore, for delay sensitive traffic, performance was enhanced by an exponential smoothing link-cost function, which reduces traffic load oscillations in the network. The performance of the proposed procedures was evaluated in two different traffic scenarios using an appropriate simulation model.
COBISS.SI-ID: 20586535