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In a slow fading environment, the carrier sense range is not constant, so there is not a constant set of hidden terminals for a mobile station. The probability of capture with a set of interferers is not a fixed value either, and it fundamentally affects the loss rate and throughput of the whole network. We estimate the expectation of the capture probability in a single hop ad hoc network and incorporate...
We present a model that predicts the saturated single-hop performance of IEEE 802.11 ad hoc network in the face of the physical capture effect under a block-fading Rayleigh channel. Based on an estimate of the frame delivery rate and a fixed point iteration algorithm, we devise an efficient control on the rate of convergence and a wise selection of the interferer sets that significantly affect the...
Physical Carrier Sensing plays a crucial role in the effectiveness of CSMA-based MAC protocols, yet its properties and impact on the system performance under slow fading channel have not been well understood. We demonstrate that carrier sensing can be highly unreliable even within the "carrier sensing range" and the channel is largely stable during a transmission between slowly moving mobile...
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