Sökning: "multipath fading"

Visar resultat 1 - 5 av 23 avhandlingar innehållade orden multipath fading.

  1. 1. Verification of wireless communication performance and robustness for automotive applications

    Författare :Mikael Nilsson; Kommunikationsteknologi; []
    Nyckelord :Vehicle-to-Vehicle; V2V; channel modeling; path loss; two-ray; obstruction; large scale fading; shadow fading; multiple links; diversity; correlation; over-the-air; OTA; multi-probe; multipath propagation simulator; fading emulation;

    Sammanfattning : Today's test methods used for verifying the performance and robustness of automotive applications using wireless communication are often based on fieldtrails, which are time consuming, costly, and not repeatable. Therefore, there is an urgent need for new verification methods that can be performed in lab environment, where the realistic radio propagation environment can be emulated. LÄS MER

  3. 2. Prediction of Mobile Radio Channels : Modeling and Design

    Författare :Torbjörn Ekman; Rodney Vaughan; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Systemteknik; mobile radio channel; fading; channel model; channel estimation; channel prediction; power prediction; Systemteknik; Systems engineering; Systemteknik; Signal Processing; signalbehandling;

    Sammanfattning : Prediction of the rapidly fading envelope of a mobile radio channel enables a number of capacity improving techniques like fast resource allocation and fast link adaptation. This thesis deals with linear prediction of the complex impulse response of a channel and unbiased quadratic prediction of the power. LÄS MER

  4. 3. Communication-Aware Motion Planning for Mobile Robots

    Författare :Magnus Minnema Lindhé; Karl Henrik Johansson; Francesco Bullo; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; autonomous systems; robotics; wireless sensor networks; motion planning; multipath fading;

    Sammanfattning : Mobile robots have found numerous applications in recent years, in areas such as consumer robotics, environmental monitoring, security and transportation. For information dissemination, multi-robot cooperation or operator intervention, reliable communications are important. LÄS MER

  5. 4. Combating Intersymbol Interference and Cochannel Interference in Wireless Communication Systems

    Författare :Ronnie Gustafsson; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ISI; CCI; wireless systems; beamforming; beam; simulation; fading; equalizer; channel; smart antenna; antenna array; recursive least squares RLS ; adaptive algorithms; blind algorithms;

    Sammanfattning : Over the last decade the world has witnessed explosive growth in the use of wireless mobile communications. Looking around we find users with mobile phones, wireless PDAs, pagers, MP3 players, and wireless headphones to connect to these devices - a small testament of the impact of wireless communications on our daily lives. LÄS MER

  7. 5. Rate adaption for progressively encoded video over fading AWGN channels

    Författare :Martin Sehlstedt; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; Signal Processing;

    Sammanfattning : With the increased capacity of the Internet it is possible to use it for real-time multimedia applications, such as video conferences. There is also an increasing interest in using Internet technology in cellular networks, such as mobile phones. LÄS MER