Jozef Stefan Institute

Displaying 1-6 of 6 results

  • White Papers // Dec 2010

    Connecting Contiki Enabled Versatile Sensor Nodes Via CC1101 Radio

    In this paper, the authors show message exchange between Versatile Sensor Nodes (VSN), which runs the Contiki operating system and use the Texas Instruments CC1101 radio. They explain the port of the Contiki on VSN with the emphasis on the wireless communication. VSN is a modular sensor node platform featuring...

    Provided By Jozef Stefan Institute

  • White Papers // Oct 2010

    ISM Bands Spectrum Sensing Based on Versatile Sensor Node Platform

    The increased utilization of wireless technologies operating in the ISM frequency bands causes cross-interference and performance degradation. A preliminary step to achieve coexistence and spectrum sharing among the ISM band technologies, supporting the idea of cognitive radio networks, is to obtain knowledge of the wireless medium utilization by making use...

    Provided By Jozef Stefan Institute

  • White Papers // Oct 2010

    System Performance Evaluation of the IEEE 802.16e Pico-Base Station in Multihop-Relay and Mesh Networks

    This paper proposes a new design and a simulation model for the pico base station based on IEEE 802.16e standard and evaluates its performance in a muti-hop-relay and mesh networks. The proposed base station design allows multihop-relay communications and thus opens a possibility for the proposed base station to be...

    Provided By Jozef Stefan Institute

  • White Papers // Oct 2010

    Radio Coverage Calculations of Terrestrial Wireless Networks Using an Open-Source GRASS System

    Radio network planning and dimensioning have significant impact on the overall system capacity of the cellular communication systems. Various commercial network planning and dimensioning tools with different radio signal propagation models implemented are available on the market. Their price and especially inflexibility led one to look for an open-source solution....

    Provided By Jozef Stefan Institute

  • White Papers // Oct 2008

    Adjacent Channel Interference Analyses in TETRA Direct Mode Operation

    The present paper analyzes adjacent channel interference in TETRA Direct Mode Operation (DMO) for indoor and outdoor environments. To determine minimal stay-away distance and interference area propagation model is used. Thus, a brief overview of free space, Bacon and CEPT SE21 propagation models, mentioned in the TETRA DMO standard is...

    Provided By Jozef Stefan Institute

  • White Papers // Jul 2008

    Viability of ISI-Based TETRA Over Satellite

    Satellite communications, by its very nature of providing wide-area coverage can play an important role in interconnecting TETRA networks. A satellite link may be used to support any of the interfaces in TETRA network. However, the selection of particular interface applies to specific scenarios and provides different advantages and disadvantages....

    Provided By Jozef Stefan Institute

  • White Papers // Oct 2010

    System Performance Evaluation of the IEEE 802.16e Pico-Base Station in Multihop-Relay and Mesh Networks

    This paper proposes a new design and a simulation model for the pico base station based on IEEE 802.16e standard and evaluates its performance in a muti-hop-relay and mesh networks. The proposed base station design allows multihop-relay communications and thus opens a possibility for the proposed base station to be...

    Provided By Jozef Stefan Institute

  • White Papers // Oct 2010

    Radio Coverage Calculations of Terrestrial Wireless Networks Using an Open-Source GRASS System

    Radio network planning and dimensioning have significant impact on the overall system capacity of the cellular communication systems. Various commercial network planning and dimensioning tools with different radio signal propagation models implemented are available on the market. Their price and especially inflexibility led one to look for an open-source solution....

    Provided By Jozef Stefan Institute

  • White Papers // Jul 2008

    Viability of ISI-Based TETRA Over Satellite

    Satellite communications, by its very nature of providing wide-area coverage can play an important role in interconnecting TETRA networks. A satellite link may be used to support any of the interfaces in TETRA network. However, the selection of particular interface applies to specific scenarios and provides different advantages and disadvantages....

    Provided By Jozef Stefan Institute

  • White Papers // Oct 2008

    Adjacent Channel Interference Analyses in TETRA Direct Mode Operation

    The present paper analyzes adjacent channel interference in TETRA Direct Mode Operation (DMO) for indoor and outdoor environments. To determine minimal stay-away distance and interference area propagation model is used. Thus, a brief overview of free space, Bacon and CEPT SE21 propagation models, mentioned in the TETRA DMO standard is...

    Provided By Jozef Stefan Institute

  • White Papers // Dec 2010

    Connecting Contiki Enabled Versatile Sensor Nodes Via CC1101 Radio

    In this paper, the authors show message exchange between Versatile Sensor Nodes (VSN), which runs the Contiki operating system and use the Texas Instruments CC1101 radio. They explain the port of the Contiki on VSN with the emphasis on the wireless communication. VSN is a modular sensor node platform featuring...

    Provided By Jozef Stefan Institute

  • White Papers // Oct 2010

    ISM Bands Spectrum Sensing Based on Versatile Sensor Node Platform

    The increased utilization of wireless technologies operating in the ISM frequency bands causes cross-interference and performance degradation. A preliminary step to achieve coexistence and spectrum sharing among the ISM band technologies, supporting the idea of cognitive radio networks, is to obtain knowledge of the wireless medium utilization by making use...

    Provided By Jozef Stefan Institute