Analyzing the performance of probabilistic algorithm in noisy manets

Details Analyzing the performance of probabilistic algorithm in noisy manets Analyzing the performance of probabilistic algorithm in noisy manets

2010-09-02

arxiv.org/abs/1009.0386v1

International Journal of Wireless & Mobile Networks (IJWMN), Vol.2, No.3, August 2010

Computer Science

Networking and Internet Architecture

13 Pages, 13 Figures, Journal

Scientific paper

Probabilistic broadcast has been widely used as a flooding optimization mechanism to alleviate the effect of broadcast storm problem (BSP) in mobile ad hoc networks (MANETs). Many research studies have been carried-out to develop and evaluate the performance of this mechanism in an error-free (noiseless) environment. In reality, wireless communication channels in MANETs are an error-prone and suffer from high packet-loss due to presence of noise, i.e., noisy environment. In this paper, we propose a simulation model that can be used to evaluate the performance of probabilistic broadcast for flooding in noisy environment. In the proposed model, the noise-level is represented by a generic name, probability of reception (pc) (0<=pc<=1), where pc=1 for noiseless and <1 for noisy environment. The effect of noise is determined randomly by generating a random number \zeta (0<=\zeta<1); if \zeta<=pc means the packet is successfully delivered to the receiving node, otherwise, unsuccessful delivery occurs. The proposed model is implemented on a MANET simulator, namely, MANSim. The effect of noise on the performance of probabilistic algorithm was investigated in four scenarios. The main conclusions of these scenarios are: the performance of probabilistic algorithm suffers in presence of noise. However, this suffering is less in high density networks, or if the nodes characterized by high retransmission probability or large radio transmission range. The nodes' speed has no or insignificant effect on the performance.

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