arXiv subjects
Publications and source records attributed to Marcin Zawada.
This paper presents an algorithm that improves channel-access statistics for wireless medium. The proposed modification of the standard CSMA algorithm is analytically shown to yield better results and simulation results are given to support this claim.
In our paper we provide mathematical analysis of a probabilistic long-hop routing algorithms which uses as the randomizing factor the estimate of distance of a station from the previous-hop source of the message.
In a number of practical scenarios a wireless device needs to mark its presence, for instance, to some access point. That enables the access point to assign the device its transmission slot or update the count of the network nodes. Many protocols can achieve exactly this result. In this paper, our goal is to show how that can be done in the simplest messaging model, the so-called beeping model. Consequently, we constrain our design so that the station does not send any modulated information in the signal and the receiver actually does not need to demodulate/decode it. We are interested in sending just a short signal, so called 'beep'. Moreover, we want to design such protocol that is resilient to random interference and enables us to identify devices which are sending the signal, as opposed to only note their presence. To do that, we leverage temporal correlations of a sequence of beeps issued by a device, as if the time-moments when they happen come from a pre-defined probability distribution, that is the fingerpring of the device.