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Network coding is a promising technique to improve the performance of wireless networks. In this paper, we establish the hexagram polling network model and propose a network coding scheme applied in this network. Based on the fact that one of the lost data blocks in a certain polling round may be recovered by the network coded data block, we establish a group of linear equations. Then we compute the...
Considering a cooperative multicast system where 2 sources transmit data to 2 users with the help of 1 relay (2-1-2), the performance of a network coded cooperative (NCC)transmission scheme is evaluated. Due to the use of network coding, more than one source node can be served simultaneously by one cooperative transmission. As a result, the time resource consumed by the cooperative transmission is...
Network coding is promising to maximize throughput in various networking systems. Compared to normal network coding operated over large finite fields, XOR network coding has gained an increasing number of applications for its simplicity, especially in wireless networks. However, both types of network coding systems are vulnerable to pollution attacks in which the compromised forwarders inject polluted...
Broadcast nature of wireless networks can be exploited to provide a flexible transmission, especially in multicast service. The potential relay then is capable to participate in message forwarding. This paper presents a network coding based cooperative (NCBC) multicast scheme exploiting limited feedback. In the developed NCBC multicast scheme, the source transmits two separate signals to multiple...
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