This paper presents an hybrid reservation‐polling MAC protocol able to effectively deal with the channel disturbances typical of Power‐line communication systems. Channel access is controlled by a scheduler running on a centralized station. Fast retransmission of corrupted packets is employed to achieve high performance on Power‐line channels characterized by frequent error bursts due to impulsive noise. The performance of our proposed mechanism are evaluated by means of simulation, for the more challenging case of time‐sensitive traffic sources (voice calls). Results show that the system efficiency is virtually not affected by lightly to moderately disturbed PLC channel. Moreover, by slightly reducing the system utilization, a target 1% packet loss ratio can be met even in the presence of severe channel disturbances.
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Bianchi et al. (2003) studied this question.
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