Sökning: "radio 2011"

Visar resultat 1 - 5 av 52 avhandlingar innehållade orden radio 2011.

1. 1. Lokalradio och kommersiell radio 1975−2010 : En mediehistorisk studie av produktion och konkurrens

   Författare :Michael Forsman; Madeleine Kleberg; Per Jauert; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; radio history; competition; intermedial; intramedial; media production; media politics; local radio; commercial radio; branding; formatting; scheduling; Media and communication studies; Medie- och kommunikationsvetenskap; medie- och kommunikationsvetenskap; Communication Studies; Other research area;

   Sammanfattning : The main question in this dissertation is: How can the emergence of local and commercial radio and the ensuing changes within each be understood in relation to intermedial and intramedial competition? This overarching question is broken down into four research questions. What driving forces contributed to the implementation of local and commercial radio respectively? (How can the competitive context of these two radio forms be described and periodized? In what ways have the practices of producing radio output, radio audiences and brands changed during the period covered by this study? What similarities and differences have emerged between local radio and commercial radio over time? This study can be seen as an institutional media history, focusing on two distinctive periods in the history of Swedish radio and television, Decentralization (1977-1987) and Commercialization (1987 onwards). LÄS MER

3. 2. Impulse Radio UWB for the Internet-of-Things : A Study on UHF/UWB Hybrid Solution

   Författare :Zhuo Zou; Hannu Tenhunen; Tor Sverre Lande; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Ultra-Wideband; impulse radio; IR-UWB; RFID; asymmetric links; UHF UWB hybrid; wireless sensing; energy detection; low power; radio receiver; positioning; Internet-of-Things;

   Sammanfattning : This dissertation investigates Ultra-Wideband (UWB) techniques for the next generation Radio Frequency Identification (RFID) towards the Internet-of-Things (IoT). In particular, an ultra-high frequency (UHF) wireless-powered UWB radio (UHF/UWB hybrid) with asymmetric links is explored from system architecture to circuit implementation. LÄS MER

4. 3. Studies of Three Different Methods to Estimate the Up-link Performance of Mobile Phone Antennas

   Författare :Sathyaveer Prasad; Peter Händel; Claes Beckman; Jan Carlsson; Högskolan i Gävle; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Antenna measurements; mobile phones; total radiated power; reverberation chamber; anechoic chamber; Telia Scattered Field Method; Maximum likelihood Estimator; Telecommunication; Telekommunikation;

   Sammanfattning : Antennas play an important role in determining the overall radio performance for wireless communications. If all other radio components perform according to their specifications, the performance of a mobile phone can be entirely determined by measuring the efficiency of its antenna. LÄS MER

5. 4. Enhancing P2P Systems over Wireless Mesh Networks

   Författare :Marcel Cavalcanti de Castro; Andreas Kassler; Edmundo Monteiro; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; peer-to-peer overlay; wireless mesh networks; peer selection; channel assignment; routing; optimization; adjacent channel interference; channel bandwidth adaptation; Datavetenskap; Computer Science;

   Sammanfattning : Due to its ability to deliver scalable and fault-tolerant solutions, applications based on the peer-to-peer (P2P) paradigm are used by millions of users on the internet. Recently, wireless mesh networks (WMNs) have attracted a lot of interest from both academia and industry, because of their potential to provide flexible and alternative broadband wireless internet connectivity. LÄS MER

7. 5. Intelligent and Interactive Package Based on RFID and WSN

   Författare :Jie Gao; Li-Rong Zheng; Richard Uusijärvi; KTH; []
   Nyckelord :;

   Sammanfattning :    An intelligent and interactive package can interact with people smartly, safely and friendly. It involves many technologies such as electronics, optics, biologic, magnetics and electro-mechanics. LÄS MER