Sökning: "Communication networks"

Visar resultat 21 - 25 av 876 avhandlingar innehållade orden Communication networks.

1. 21. Towards adaptive sensor networks

   Författare :Niclas Finne; Thiemo Voigt; Per Gunningberg; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Datavetenskap med inriktning mot datorkommunikation; Computer Science with specialization in Computer Communication;

   Sammanfattning : Wireless sensor networks consist of many small embedded devices that are equipped with sensors and a wireless communication unit. These devices, or sensor nodes, are typically low cost, resource constrained and battery-powered. LÄS MER

3. 22. Robust Low-Cost Multiple Antenna Processing for V2V Communication

   Författare :Chouaib Bencheikh Lehocine; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Directional antennas; Beamforming; Multiple antennas; Periodic communication; Broadcast V2V communication; Hybrid combining;

   Sammanfattning : Cooperative V2V communication with frequent, periodic broadcast of messages between vehicles is a key enabler of applications that increase traffic safety and traffic efficiency on roads. Such broadcast V2V communication requires an antenna system with omnidirectional coverage, which is difficult to achieve using a single antenna element. LÄS MER

4. 23. Dynamic Resource Provisioning and Survivability Strategies in Optical Networks

   Författare :Jawwad Ahmed; Lena Wosinska; Andrea Fumagalli; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; optical networks; passive optical networks; wavelength; routing; Survivability; protection; restoration; SRA - ICT; SRA - Informations- och kommunikationsteknik;

   Sammanfattning : Optical networks based on Wavelength Division Multiplexing (WDM) technology show many clear benefits in terms of high capacity, flexibility and low power consumption. All these benefits make WDM networks the preferred choice for today’s and future transports solutions which are strongly driven by a plethora of emerging online services. LÄS MER

5. 24. Using Existing Infrastructure as Support for Wireless Sensor Networks

   Författare :Jonas Neander; Mats Björkman; Mikael Nolin; Jukka Mäki-Turja; Björn Knutsson; Mälardalens högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; wireless; sensor networks; communication; base station; asymmetric communication; multihop; network lifetime; Computer science; Datavetenskap; Datavetenskap;

   Sammanfattning : Denna avhandling handlar om hur befintliga datorinfrastrukturer i t.ex. sjukhus och industrier kan avlasta sensornätverk med energikrävande uppgifter. Vi har forskat på olika aspekter som gör det möjligt att förlänga livslängden på dessa sensornätverk. LÄS MER

7. 25. Towards Radio-Environment Aware IoT Networks : Wireless Coexistence Methods for Low-complexity Devices

   Författare :Simone Grimaldi; Mikael Gidlund; Aamir Mahmood; Tingting Zhang; Georgios Z. Papadopoulos; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; IoT; Industrial IoT; Interference; Machine Learning; Wireless Coexistence; Wireless Networks;

   Sammanfattning : Wireless technologies for short-range communication play a central role in the massive diffusion of the Internet of Things (IoT) paradigm. Such communication solutions rely extensively on the availability of unlicensed spectrum in the form of bands for industrial, scientific, and medical (ISM) applications. LÄS MER