networkcoding (NC) significantly increases communication opportunities and improves network performance. The focus of most research is on performance analysis with the same packet length of input flows. However, the ...
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networkcoding (NC) significantly increases communication opportunities and improves network performance. The focus of most research is on performance analysis with the same packet length of input flows. However, the length of packets is different in real networks and affects networkcoding performance. In this paper, first we proposed an asynchronous network coding strategy with periodic broadcasting at the relay node and simulated the relation between the broadcasting period and the coding gain. Second, we took the packet length into consideration and obtained the mathematical relation between the coding gain and the packet length for a given arrival rate. Finally, we verified the results via simulation. Our work showed that the impact of the packet length could not be ignored when using networkcoding. The methodology to improve the performance of NC in real networks is provided when the statistical length of packets is considered.
Now many researches have been studying the optimization between throughput/energy consuming and delay with a couple of independent input flows in networkcoding (NC). However, the implementation of networkcoding (NC)...
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ISBN:
(纸本)9781538663509
Now many researches have been studying the optimization between throughput/energy consuming and delay with a couple of independent input flows in networkcoding (NC). However, the implementation of networkcoding (NC) requires a thorough investigation of its impact on relevant queueing systems which little work focuses on. In this paper, the scenario with three independent Poisson input flows based on our previous work about the pdf with two independent Poisson input flows, and one output flow is considered. The asynchronous NC-based strategy is that a new arrival evicts a head packet holding in its queue when waiting for another packet from the other flow to encode. The three flows are divided into two parts for getting the probability density function (pdf) of the output flow. The pdf for the output flow which contains both coded and uncoded packets is derived. Besides, the statistic characteristics of this strategy are analyzed. These results are verified by numerical simulations.
networkcoding(NC) has potential to improve the wireless network performance compared with a routing network in a two-relay network. Now most of researches focus on the performance analysis with the same length data p...
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ISBN:
(纸本)9781509064151;9781509064144
networkcoding(NC) has potential to improve the wireless network performance compared with a routing network in a two-relay network. Now most of researches focus on the performance analysis with the same length data packet in NC. However, our previous work has proved that the length of packets would affect the networkcoding performance and energy consumption. In this paper, we propose a new strategy of networkcoding based on packet length to improve the networkcoding gain. The strategy is that the smaller packets in the same waiting queue is bunding to a large one base on the asynchronous network coding, and the larger one would replace the old packets and then be coded with the other waiting queue. Our work showed that the new asynchronous network coding would improve the networkcoding gain of NC and reduce the effect of packet length in NC.
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