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Channel characteristics for wireless in-house and car networks

Nowadays, consumer electronic devices are in most cases only connected to a few other devices. Future devices will have an ubiquitous connectivity between each other. Due to this, integrated services can be exchanged between them. A very interesting possibility to realize such networking is posed by wireless local networks.

In addition to the home environment, there are many applications of wireless networks in the vehicular environment. In a future scenario there will be wireless connections within the car, between cars and between the car and a base station.

Due to the high density of active network participants and the limited frequency range for wireless LANs in the 2.4 GHz and 5 GHz band, mutual interference has to be avoided to a large extent. The development of appropriate methods to assure coexistence requires profound knowledge of the channel properties and the propagation characteristics.

In this project the characteristics of the transmission channnel will be investigated. The goal is to develop reliable channel models. With the help of these models different adaptation methods and transmission principles can be analysed.

The attained statistical conclusions and developed channel models are incorporated into other projects like TakeOFDM and miniWatt II.

 

hu_profile

Typisches Inhauskanalprofil im 2,4 GHz-Bereich

 

References

  • Jostschulte K.; Endemann,W.; Kays, R.:
    Möglichkeiten zur Optimierung von WLAN für die multimediale Inhaus-Vernetzung, ITG/FKTG-Fachtagung Elektronische Medien, 11. Dortmunder Fernsehseminar, Dortmund, Germany
  • Kays, R.; Jostschulte K.; Endemann,W.:
    Optimisation of IEEE 802.11 Based WLAN for Home Media Networks, 10th International OFDM-Workshop, August 31th - September 1st 2005, Hamburg, Germany
  • Brakensiek, J.; Endemann, W.:
    Kanalmessungen mit hoher Zeit- und Frequenzauflösung,
    Beitrag zum 7. Dortmunder Fernsehseminar, 1997.
  • Herfet, T.; Appelhans, P.; Brakensiek, J.:
    Characteristics of the 2.45 GHz-ISM-Channel & Derived IHDN-System Architecture,
    Workshop IHDN, Ulm, 1998.
  • Brakensiek, J.; Endemann, W.:
    Messung und Modellierung des Inhouseübertragungskanals bei 2.45 GHz,
    43. Internationales Wissenschaftliches Kolloquium, Ilmenau, 1998.
  • Brakensiek, J.; Franzen, O.:
    Bandwidth efficient Medium Access for an Inhouse Wireless LAN,
    MT T-S European Wireless 98, Amsterdam, 1998.
  • Brakensiek, J:
    Messung und Modellierung des zeitvarianten Verhaltnes eines Inhouseübertragungs Kanals bei 2.45 GHz,
    ITG-Diskussionssitzung, Reisenburg, März 1999.
  • Jostschulte, K.; Kays, R.; Endemann, W.:
    Weiterentwicklung von WLAN für die Video-Heimvernetzung,
    21. Tagung der FKTG, Koblenz, Germany, 24.5.-27.05.2004
  • Jostschulte, K.; Kays, R.; Endemann, W.:
    High Efficiency Wireless LAN for Multimedia Home Networks,
    IEEE Internat. Conference on Consumer Electronics 2005, Las Vegas, USA, 10.1.-12.1.2005
  • Jostschulte, K.; Kays, R.; Endemann, W.:
    Enhancement of Wireless LAN for Multimedia Home Networking,
    IEEE Trans. on Consumer Electronics, Vol. 51, No. 1, Feb. 2005, S.80-86


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Contact

Prof. Dr.-Ing. Rüdiger Kays
Tel.: 0231 755-2100