CFF (coordinated formation flight) is a usual flight action of multiple aircrafts. CFF of UAVs (unmanned aerial vehicles) can expand single UAV's task coverage radius and enhance the success rate of task execution...
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ISBN:
(纸本)9781467398039
CFF (coordinated formation flight) is a usual flight action of multiple aircrafts. CFF of UAVs (unmanned aerial vehicles) can expand single UAV's task coverage radius and enhance the success rate of task execution. CFF of UAVs has more communication needs (e.g. throughput, reliability, and stability) than current manned aircrafts. In this paper, we investigate the utility of network coding for CFF in UAVs. Since the formations for CFF of UAVs are relatively fixed, we abstract the universal formation for CFF of UAVs according to structural features. By introducing network coding into universal formation for CFF of UAVs, we analyze the network model and derive the existence condition of network coding for CFF of UAVs. Analysis shows that the network coding can reduce the costs of data transmission, and balance the network load, and finally improve the effectiveness and reliability of CFF of UAVs.
network coding is a key technique to fulfill the demands of next generation information technology. However, stored and transmitted data is only valuable if its confidentiality is ensured. In recent years, there has b...
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ISBN:
(纸本)9781509024827
network coding is a key technique to fulfill the demands of next generation information technology. However, stored and transmitted data is only valuable if its confidentiality is ensured. In recent years, there has been several approaches that exploit properties of network coding to enforce confidentiality in a more efficient way. In this work, we present eSPOC, an enhanced version of an existing scheme (SPOC) that yields better results in communication overhead, energy consumption, and latency. A theoretical analysis as well as measurements on a testbed confirm the benefits of our scheme compared to state-of-the-art schemes.
Power line communication systems face several challenges which degrade data communication quality. To overcome such issues, we propose CodePLC, a network coding Power Line Communication MAC protocol. We use a single r...
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ISBN:
(纸本)9781509020546
Power line communication systems face several challenges which degrade data communication quality. To overcome such issues, we propose CodePLC, a network coding Power Line Communication MAC protocol. We use a single relay node to intermediate communication, storing, and forwarding linear combinations of data packets. We evaluate CodePLC performance through simulations of a common topology for a PLC system under a wide range of scenarios. In sum, our results show that in a broadcast like transmission, the use of network coding enhances overall system performance. When compared to a traditional PLC system, we have observed an average of 115% goodput increase. Moreover, our protocol reduces in 112% the average of network occupancy buffers. Finally, CodePLC reduces mean latency by four times.
network coding consists of intelligently aggregating data packets by means of binary or linear combinations. Recently, network coding has been proposed as a complementary solution for energy efficient multi-hop routin...
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network coding consists of intelligently aggregating data packets by means of binary or linear combinations. Recently, network coding has been proposed as a complementary solution for energy efficient multi-hop routing in Wireless Sensor networks (WSNs). This is because network coding, through the aggregation of packets, considerably reduces the number of transmissions throughout the network. Although numerous network coding techniques for energy efficient routing have been developed in the literature, not much is known about a single survey article reporting on such energy efficient network coding within multi-hop WSNs. As a result, this paper addresses this gap by first classifying and discussing the recent developed energy efficient network coding techniques. The paper then identifies and explains open research opportunities based on analysis of merits of such techniques. This survey aims at providing the reader with a brief and concise idea on the current state-of-art research on network coding mainly focusing on its applications for energy efficient WSNs. (C) 2016 The Authors. Published by Elsevier B.V.
Generation-based network coding is an important realization of network coding in practical networks. Due to the special data processing of generations, it is not only faced with intra-generation pollution attacks, but...
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ISBN:
(纸本)9781509052639
Generation-based network coding is an important realization of network coding in practical networks. Due to the special data processing of generations, it is not only faced with intra-generation pollution attacks, but also is vulnerable to inter-generation pollution attacks. To solve this problem, we propose new homomorphic signature schemes for generation-based network coding. By means of the lattice basis delegation algorithms, our schemes can generate a public lattice for all source nodes and the homomorphic signatures are calculated on this lattice. Concretely, the lattice basis delegation algorithm ExtBasis() is used for intra-generation signature and the new lattice basis delegation algorithm BasisGet() is used for inter-generation signature. Scheme analysis shows the correctness and homomorphic property of the proposed schemes.
The energy efficiency of WSN is important to determine whether a WSN can be widely and reliably deployed and *** fundamental problem is to lessen the energy consumption produced by the communication modules of WSN ***...
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ISBN:
(纸本)9781509001668
The energy efficiency of WSN is important to determine whether a WSN can be widely and reliably deployed and *** fundamental problem is to lessen the energy consumption produced by the communication modules of WSN *** paper analyzes and solves the problem from the perspective of how to design efficient data aggregation *** aims to reduce the data quantity to be collected through data compression and improve the efficiency of data aggregation through optimizing the transmission *** deep analysis of the internal relationship between network coding and compressed sensing,and based on the relevance in WSN nodes' sensing data,and based on the broadcast nature of wireless transmission,this paper proposes a new data aggregation method for WSN with high energy efficiency,Balanced Compressed network coding(BCNC).Simulations are carried out for BCNC method and currently representative Collection Tree Protocol(CTP) and Finite Field based Random Linear network coding(FFRL-NC) data transmission *** result of simulation verifies that BCNC is significantly superior in terms of energy efficiency of data collection.
This paper carries out a performance evaluation of network coding (NC) for power line communication (PLC) systems based on simulation and theoretical results. NC is deployed at the data link layer (DLL) where it could...
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ISBN:
(纸本)9781467366434
This paper carries out a performance evaluation of network coding (NC) for power line communication (PLC) systems based on simulation and theoretical results. NC is deployed at the data link layer (DLL) where it could potentially improve the routing protocol, the MAC scheduler and the ARQ mechanisms. In this paper we focus solely on the combination of NC and ARQ mechanisms. Nevertheless, based on the *** standard, we are able to achieve a significant improvement in data rate and latency. We show the optimal setup of NC parameters like generation and symbol size to achieve the best performance of the ARQ mechanism in PLC systems.
Cognitive radio (CR) is a promising technology to improve spectrum utilization. However, spectrum availability is uncertain which mainly depends on primary user's (PU's) behaviors. Broadcast is the most basic ...
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ISBN:
(纸本)9781509058808
Cognitive radio (CR) is a promising technology to improve spectrum utilization. However, spectrum availability is uncertain which mainly depends on primary user's (PU's) behaviors. Broadcast is the most basic way to disseminate data from one source node to all the others in multi-channel cognitive radio networks (CRNs), and the retransmission can be a vital factor for improving broadcast performance. Existing works fail to exploit the unique characteristic of reliable broadcast or the broadcast nature of wireless links, which will lead to redundant transmissions and broadcast performance degradation. In this paper, we propose a social-based scheme for network coding based broadcast in CRNs, in which the source node combines all lost packets into a single one for retransmission by random linear network coding (RLNC), considering channel assignment in CRNs. We evaluate and compare the proposed scheme against other traditional retransmission mechanism with channel assignment. It is shown that the proposed scheme, by integrating social feature with network coding can obtain much better results, with respect to the average number of transmissions per packet.
The usage of Road Side Units (RSUs) acting as a buffer point in VANETs alleviates the intermittent vehicle-to-vehicle (V2V) connectivity problem. However, due to the vehicle mobility and the short RSU-transmission-ran...
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ISBN:
(纸本)9781509016983
The usage of Road Side Units (RSUs) acting as a buffer point in VANETs alleviates the intermittent vehicle-to-vehicle (V2V) connectivity problem. However, due to the vehicle mobility and the short RSU-transmission-range, a vehicle dwells short time inside an RSU. Nevertheless, quick response from the RSU server, helps a driver to make a quick decision while driving. network coding is known to be efficient for broadcasting multiple data items in a single packet by encoding requested data items based on the cache information of the vehicles. This can significantly improve the broadcast bandwidth usage as well as reduce the response time of the system. However, this requires the prior knowledge of cached data items of vehicles. Hence vehicles need to upload the cache information to the RSU server. This wastes upload bandwidth. In multi-RSU VANETs, we propose an approach to apply network coding in such a way so that vehicles do not need to upload their cache information to the server. Applying network coding improves the broadcast performance of an RSU in terms of minimizing the deadline miss ratio of the generated requests by vehicles, and reducing the response time of serving requests by the RSU server. Simulation results support our claims.
Wireless communications in intelligent transport systems (ITS) require low-latency high-quality vehicle-to-infrastructure (V2I) transmission. However, fading due to vehicular movement sometimes causes transmission err...
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ISBN:
(纸本)9781509016983
Wireless communications in intelligent transport systems (ITS) require low-latency high-quality vehicle-to-infrastructure (V2I) transmission. However, fading due to vehicular movement sometimes causes transmission errors, resulting in repeated requests and high latency. A path diversity scheme for data transmission with multiple paths is effective in handling this problem. In addition, it is important that these transmissions should be conducted with a minimum number of resources to avoid signal traffic congestion. In this paper, we propose a novel cooperative V2I uplink transmission scheme that utilizes vehicle-to-vehicle (V2V) network coding, in which the need for additional resources is restricted by using analog network coding (ANC) or digital network coding (DNC). Cooperative communication improves the quality of the V2I transmission. We compare the performances of the required resources and the transmission quality for both schemes. In addition, we propose an iterative decoding scheme for ANC to improve the performance further. Numerical results show that the proposed scheme increases throughput and that the performance of ANC transmission is superior to that of DNC transmission despite that the former requires fewer resources when the average SNR of the link decreases.
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