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Veröffentlichung

The Impact of a Dedicated Sensing Engine on a SDR Implementation of the CSMA Protocol

Autoren:
Dr.-Ing. Andre Puschmann
Dr.-Ing. Mohamed Abdrabou Kalil
Typ:
Konferenz
Status:
akzeptiert
Veröffentlichungsdatum
28.08.2013
Abstract:
The practical realization of Medium Access Control
(MAC) protocols using inexpensive Software Defined Radio (SDR)
equipment is a challenge due to high communication delays
between the radio hardware and the host computer. These delays
hinder the implementation of MAC protocols since some phases
such as the Clear Channel Assessment (CCA) phase as well as the
subsequent channel access phase are subject to strict temporal
constraints. In this paper, we employ a dedicated spectrum
sensing engine as a CCA agent to enhance the sensing capabilities
of a pure software implementation of a Carrier Sense Multiple
Access (CSMA) based MAC protocol. Different scenarios are used
to evaluate the performance of this sensing engine and its impact
on the CSMA based MAC protocol. The experiment results show
that using a hardware-assisted CCA mechanism has a positive
impact on the slot time parameter as well as on the frame error
rate as compared to a pure software implementation.
Bibtex