In this paper, we, based on NS-2 simulator, evaluate the performances of different TCP protocols with network coding in wireless multihop networks, and then propose two schemes to enhance the performances of TCPs with...
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The low power wireless sensor devices which usually uses the low power wireless private area network (IEEE 802.15.4) standard are being widely deployed for various purposes and in different scenarios both in civil and...
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This paper proposes a multicast transmission scheme with Hybrid Automatic Repeat reQuest (HARQ) based on network coding (NC) and Adaptive Modulation and coding (AMC). We analyze the system throughput theoretically and...
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Efficient and reliable transmission of multimedia over wireless networks is still a challenging task due to the limitations like end-to-end delay and time varying channel. Multimedia data also require high bandwidth o...
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This paper presents an energy model and energy measurements for network coding enabled wireless meshed networks based on IEEE 802.11 technology. The energy model and the energy measurement testbed is limited to a simp...
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Two-way real-time video communication in wireless networks requires high bandwidth, low delay and error resiliency. This paper addresses these demands by proposing a system with the integration of network coding (NC),...
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The minimal set of Shannon-type inequalities, called elemental inequalities, plays a central role in efficiently determining whether a given inequality is in fact Shannon-type or not and in computing the linear progra...
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ISBN:
(纸本)9781538647813
The minimal set of Shannon-type inequalities, called elemental inequalities, plays a central role in efficiently determining whether a given inequality is in fact Shannon-type or not and in computing the linear programming bound for network coding capacity. In previous work we characterised a minimal set when functional dependence constraints are present. In this work we further generalize the characterisation to include Markov random field (MRF) structures which are defined by full conditional mutual independence constraints.
5G communication networks introduce a massive heterogeneous environment where network traffic mainly contains video data. Today, in situations where users are closely located to each other and request the same informa...
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5G communication networks introduce a massive heterogeneous environment where network traffic mainly contains video data. Today, in situations where users are closely located to each other and request the same information (e.g. streaming services in stadiums, connecting information in trains, slides dissemination in conferences, etc), the base station (BS) establishes one unicast connection per user, which is inefficient since the BS sends repeated data to co-located users. network-Coded Cooperative (NCC) networks increase the network performance in the aforementioned scenarios by leveraging the use of Random Linear network coding (RLNC) and Mobile Clouds (MC). Non of the previous works evaluated the latency overhead of NCC systems, to hte best of our knowledge. Our contribution in this paper is twofold: First, we present a new method to measure the latency where clocks inside the machines do not need to be synchronized. Second, we use that method and the traditional timestamps to measure the latency in a NCC testbed. The results show an average latency of 200 milliseconds (ms) for three clients and 400 ms for four clients. Moreover, we observed a correlation between clients inside the MC in terms of packet loss. A loss would stall the packet decoding until it is recovered, pictured by latency peaks.
In cognitive radio networks (CRNs), there is no guarantee on the availability of spectrum for the opportunistic communications between cognitive radio (CR) users. Transmission design plays a key role in leveraging the...
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network coding (NC) can achieve the maximum information flow in a network by allowing nodes to combine received packets before retransmission. Several works have shown NC to be beneficial in wireless networks, but the...
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