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System Modeling and Deep Learning-Based Security Analysis of Uplink NOMA Relay Networks with IRS and Fountain Codes 认领 引用
1
作者 Phu Tran Tin Minh-Sang Van Nguyen +2 位作者 Quy-Anh Bui Agbotiname Lucky Imoize Byung-Seo Kim 《Computer Modeling in Engineering & Sciences》 SCIE EI 2025年第8期2521-2543,共23页
Digital content such as games,extended reality(XR),and movies has been widely and easily distributed over wireless networks.As a result,unauthorized access,copyright infringement by third parties or eavesdroppers,and ... Digital content such as games,extended reality(XR),and movies has been widely and easily distributed over wireless networks.As a result,unauthorized access,copyright infringement by third parties or eavesdroppers,and cyberattacks over these networks have become pressing concerns.Therefore,protecting copyrighted content and preventing illegal distribution in wireless communications has garnered significant attention.The Intelligent Reflecting Surface(IRS)is regarded as a promising technology for future wireless and mobile networks due to its ability to reconfigure the radio propagation environment.This study investigates the security performance of an uplink Non-Orthogonal Multiple Access(NOMA)system integrated with an IRS and employing Fountain Codes(FCs).Specifically,two users send signals to the base station at separate distances.A relay receives the signal from the nearby user first and then relays it to the base station.The IRS receives the signal from the distant user and reflects it to the relay,which then sends the reflected signal to the base station.Furthermore,a malevolent eavesdropper intercepts both user and relay communications.We construct mathematical equations for Outage Probability(OP),throughput,diversity evaluation,and Interception Probability(IP),offering quantitative insights to assess system security and performance.Additionally,OP and IP are analyzed using a Deep Neural Network(DNN)model.A deeper comprehension of the security performance of the IRS-assisted NOMA systemin signal transmission is provided by Monte Carlo simulations,which are also carried out to confirm the theoretical conclusions. 展开更多
关键词 Copyright management deep neural network fountain codes intelligent reflecting surface non-orthogonal multiple access physical layer security uplink
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AeroMTP:A fountain code-based multipath transport protocol for airborne networks 认领 引用 被引量：4
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作者 Li Jie Gong Erling +2 位作者 Sun Zhiqiang Liu Wei Xie Hongwei 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2015年第4期1147-1162,共16页
Airborne networks（ANs） are special types of ad hoc networks that can be used to enhance situational awareness, flight coordination and flight efficiency in civil and military aviation.Compared to ground networks, AN... Airborne networks（ANs） are special types of ad hoc networks that can be used to enhance situational awareness, flight coordination and flight efficiency in civil and military aviation.Compared to ground networks, ANs have some unique attributes including high node mobility, frequent topology changes, mechanical and aerodynamic constrains, strict safety requirements and harsh communication environment.Thus, the performance of conventional transmission control protocol（TCP） will be dramatically degraded in ANs.Aircraft commonly have two or more heterogeneous network interfaces which offer an opportunity to form multiple communication paths between any two nodes in ANs.To satisfy the communication requirements in ANs, we propose aeronautical multipath transport protocol（Aero MTP） for ANs, which effectively utilizes the available bandwidth and diversity provided by heterogeneous wireless paths.Aero MTP uses fountain codes as forward error correction（FEC） codes to recover from data loss and deploys a TCP-friendly rate-based congestion control mechanism for each path.Moreover, we design a packet allocation algorithm based on optimization to minimize the delivery time of blocks.The performance of Aero MTP is evaluated through OMNe T＋＋ simulations under a variety of test scenarios.Simulations demonstrate that Aero MTP is of great potential to be applied to ANs. 展开更多
关键词 Ad hoc networks Airborne networks Fountain code Multi-paths Network protocols
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A NOVEL APPROACH OF LIMITED-RANDOMNESS FOUNTAIN CODES IN DEEP SPACE COMMUNICATION 认领 引用 被引量：1
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作者 Gu Shushi Zhang Qinyu Jiao Jian 《Journal of Electronics(China)》 2011年第2期204-209,共6页
Digital fountain is applied into deep space communication for its rateless and non-feedback forward error correction.However,the long code length and encoding overhead are confined factors to guarantee a considerable ... Digital fountain is applied into deep space communication for its rateless and non-feedback forward error correction.However,the long code length and encoding overhead are confined factors to guarantee a considerable recovery probability as power and buffer-limited equipment in deep space environment.At the same time,the typical fountain decoding is sub-optimum decoding algorithm.We propose a new approach,Dependent Sequences Compensation Algorithm(DSCA),to improve the encoding efficiency by restricting the randomness in fountain encoding.While decoding algorithm is also optimized by redundant information in stopping set.The results show that the optimized method can obtain a 10-4 decoding failure rate with overhead under 0.20 for code length 500,which indicates the usefulness of the proposed approach in deep space communication. 展开更多
关键词 Deep space communication File delivery Fountain codes LT codes
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Joint Network and Fountain Codes Design for RelayAssisted Multi-User System 认领 引用 被引量：1
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作者 HUANG Ying LEI Jing WEI Jibo 《China Communications》 SCIE CSCD 2015年第7期96-107,共12页
In relay-assisted multi-user system, relay coding is important to enhance the robustness and reliability of cooperative transmission. For better adaptability and efficiency, two joint network and fountain coding(JNFC)... In relay-assisted multi-user system, relay coding is important to enhance the robustness and reliability of cooperative transmission. For better adaptability and efficiency, two joint network and fountain coding(JNFC) schemes are proposed. When the condition of all direct channels is worse, JNFC scheme based on distributed LT(DLT) codes is used. Otherwise, JNFC scheme based on multi-dimensional LT(MD-LT) codes is suited. For both two above-mentioned schemes, the united degree distribution design method for short-length fountain codes is proposed. For the latter scheme, MD-LT codes are proposed for equal error protection(EEP) of each user. Simulation results and analysis show that the united degree distribution need less decoding overhead compared with other degree distribution for short-length fountain codes. And then, all users are protected equally in despite of asymmetric uplinks. 展开更多
关键词 relay coding network coding fountain codes LT codes Raptor codes DLT MD-LT EEP
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Efficient unequal error protection for online fountain codes 认领 引用 被引量：1
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作者 SHI Pengcheng WANG Zhenyong +1 位作者 LI Dezhi LYU Haibo 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2024年第2期286-293,共8页
In this paper,an efficient unequal error protection(UEP)scheme for online fountain codes is proposed.In the buildup phase,the traversing-selection strategy is proposed to select the most important symbols(MIS).Then,in... In this paper,an efficient unequal error protection(UEP)scheme for online fountain codes is proposed.In the buildup phase,the traversing-selection strategy is proposed to select the most important symbols(MIS).Then,in the completion phase,the weighted-selection strategy is applied to provide low overhead.The performance of the proposed scheme is analyzed and compared with the existing UEP online fountain scheme.Simulation results show that in terms of MIS and the least important symbols(LIS),when the bit error ratio is 10-4,the proposed scheme can achieve 85%and 31.58%overhead reduction,respectively. 展开更多
关键词 online fountain code random graph unequal error protection(UEP) rateless code
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A Feedback Scheme for Fountain Codes Based Transport Protocol in Space Communications 认领 引用 被引量：1
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作者 XING Yanling GE Ning 《China Communications》 SCIE CSCD 2015年第8期62-72,共11页
This paper proposed a practical- feedback scheme for fountain codes based transportprotocol in space communications. In the proposed scheme, the sender is signaled by two types of acknowledgment （ACK） packets.Before... This paper proposed a practical- feedback scheme for fountain codes based transportprotocol in space communications. In the proposed scheme, the sender is signaled by two types of acknowledgment （ACK） packets.Before decoding, packet loss probability isestimated on the receiver side and encapsulated intoa soft ACKand sent to the sender.After decoding,decoding results are encapsulated into hard ACKsandsent to the sender. There are two contributionsin the proposed scheme： 1. Empl layer calculation instead layer statistics to estimate oying physical of application the packet loss probability of space channel, which can improvethe accuracy and practicality. 2. A cascade overhead-failure probability relationship between the sender and the receiver has been analyzed to help determine the exact numberof packetsneeded byfountain decoding.Simulations show that for space communications,compared with the existing space transport protocols, fountain codes based transport protoeolwith the proposed schemecan not only ensure transmission reliability, but also greatly improvelink utilization. 展开更多
关键词 fountain code feedback spacecommunication packet loss probabilityestimation transport protocol
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Novel joint encoding/decoding algorithms of fountain codes for underwater acoustic communication 认领 引用 被引量：1
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作者 Mingshen Liang Jinjue Duan +2 位作者 Danfeng Zhao Jiaxi Si Xiangyu Song 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2016年第4期772-779,共8页
Fountain codes are considered to be a promising coding technique in underwater acoustic communication（UAC） which is challenged with the unique propagation features of the underwater acoustic channel and the harsh ma... Fountain codes are considered to be a promising coding technique in underwater acoustic communication（UAC） which is challenged with the unique propagation features of the underwater acoustic channel and the harsh marine environment. And Luby transform（LT） codes are the first codes fully realizing the digital fountain concept. However, in conventional LT encoding/decoding algorithms, due to the imperfect coverage（IC） of input symbols and short cycles in the generator matrix, stopping sets would occur and terminate the decoding. Thus, the recovery probability is reduced,high coding overhead is required and decoding delay is increased.These issues would be disadvantages while applying LT codes in underwater acoustic communication. Aimed at solving those issues, novel encoding/decoding algorithms are proposed. First,a doping and non-uniform selecting（DNS） encoding algorithm is proposed to solve the IC and the generation of short cycles problems. And this can reduce the probability of stopping sets occur during decoding. Second, a hybrid on the fly Gaussian elimination and belief propagation（OFG-BP） decoding algorithm is designed to reduce the decoding delay and efficiently utilize the information of stopping sets. Comparisons via Monte Carlo simulation confirm that the proposed schemes could achieve better overall decoding performances in comparison with conventional schemes. 展开更多
关键词 underwater acoustic communication（UAC） fountain codes non-uniform encoding hybrid decoding algorithm stopping sets
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Feedback-based unequal error protection fountain code over device-to-device broadcast 认领 引用
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作者 黄盖世 费泽松 +2 位作者 曹聪哲 邢成文 匡镜明 《Journal of Beijing Institute of Technology》 EI CAS 2014年第4期534-540,共7页
To enhance encoding efficiency, an unequal error protection （UEP） broadcast scheme based on one additional feedback is proposed. Different from the equal probability selection for source packets in traditional fount... To enhance encoding efficiency, an unequal error protection （UEP） broadcast scheme based on one additional feedback is proposed. Different from the equal probability selection for source packets in traditional fountain encoding, the proposed scheme calculates the packet loss ratio （PLR） according to the feedback results in systematic broadcast phase （SBP） and then optimizes the selection probability for source packets to guarantee higher level error protection for those source packets with larger PLRs. Thus the amount of unnecessarily redundant encoded packets during encoding broadcast phase （EBP） is decreased significantly. Numerical results show that the proposed scheme can recover 60% more packets than the traditional non-feedback broadcast scheme at the ex- pense of tolerably only one feedback procedure. 展开更多
关键词 unequal error protection （UEP） fountain code feedback device to device （D2D） broadcast
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Anti-Jamming Performance of Fountain Coded Differential Frequency Hopping Systems in AWGN 认领 引用 被引量：3
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作者 ZHU Wenjie YI Benshun +1 位作者 GAN Liangcai XIE Qiuying 《China Communications》 SCIE CSCD 2014年第A2期53-60,共8页
Based on the anti-jamming performance of differential frequency hopping(DFH)systems in Additive White Gaussian Noise(AWGN)channel,Fountain code is introduced to the DFH systems as the outer error correcting code in th... Based on the anti-jamming performance of differential frequency hopping(DFH)systems in Additive White Gaussian Noise(AWGN)channel,Fountain code is introduced to the DFH systems as the outer error correcting code in this paper to investigate the improvements against partial-band jamming over AWGN channel.The performance of Fountain coded DFH is theoretically analyzed and numerically simulated.The total frequency of hopping in the simulation is 16,and results show that,on one hand,when exact jamming state information(JSI)is available,and the number of jamming frequency is n=16,the bit error rate(BER)of 10~3 is achieved with the signal to interference ratio(SIR)approximately 7.5 dB over AWGN channel,and the performance improves about 1-1.5dB compared with the no-coded system.When the number of jamming frequency is n=2,the performance increases 15-17dB.On the other hand,when JSI is unavailable,a joint JSI estimation and decoding algorithm is proposed.The BER of 103 is achieved with jamming-frequency n 16,SIR=8dB and signal noise ratio(SNR)10dB over AWGN channel.It's proved that this algorithm provides robust anti-jamming pertbrmance even without JSI.The anti-jamming performance of Fountain coded DFH systems is obviously superior to no-coded DFH systems. 展开更多
关键词 differential frequency hopping partial-band jamming Fountain codes jamming state estimation
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Implementation of LT codes based on chaos 认领 引用 被引量：3
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作者 周茜 李亮 +1 位作者 陈增强 赵加祥 《Chinese Physics B》 SCIE EI CAS 2008年第10期3609-3615,共7页
Fountain codes provide an efficient way to transfer information over erasure channels like the Internet. LT codes are the first codes fully realizing the digital fountain concept. They are asymptotically optimal ratel... Fountain codes provide an efficient way to transfer information over erasure channels like the Internet. LT codes are the first codes fully realizing the digital fountain concept. They are asymptotically optimal rateless erasure codes with highly efficient encoding and decoding algorithms. In theory, for each encoding symbol of LT codes, its degree is randomly chosen according to a predetermined degree distribution, and its neighbours used to generate that encoding symbol are chosen uniformly at random. Practical implementation of LT codes usually realizes the randomness through pseudo-randomness number generator like linear congruential method. This paper applies the pseudo-randomness of chaotic sequence in the implementation of LT codes. Two Kent chaotic maps are used to determine the degree and neighbour（s） of each encoding symbol. It is shown that the implemented LT codes based on chaos perform better than the LT codes implemented by the traditional pseudo-randomness number generator. 展开更多
关键词 digital fountain fountain codes LT codes Kent chaotic map
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Performance Analysis and Parameter Optimizing Rules of LT Codes 认领 引用 被引量：1
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作者 GUO Chunmei BI Xueya 《China Communications》 SCIE 2010年第4期103-107,共5页
As a new class of forward error correcting encoding algorithm,Luby Transform codes are suitable for the erasure channel environment based on the packet communication.The encoding,decoding algorithms and the implementa... As a new class of forward error correcting encoding algorithm,Luby Transform codes are suitable for the erasure channel environment based on the packet communication.The encoding,decoding algorithms and the implementation of LT codes are summarized in the paper.Meanwhile simulations of the ideal soliton distribution and robust soliton distribution are conducted to evaluate the performance of LT codes in terms of successful decoding probability,mean degree and decoding time over the erasure channel.The parameter optimization rules of LT codes are deeply discussed and proposed in the paper.The research results are of great practical importance for improving the real time performance in the erasure correction applications. 展开更多
关键词 Digital Fountain Codes LT Codes Degree Distribution Algorithm Erasure channel
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基于喷泉码的多路径自适应学习速率控制方法 认领 引用
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作者 晁展 刘建航 +2 位作者 李跃洪 赵重阳 高庆澳 《计算机与数字工程》 2026年第1期66-72,87,共7页
随着数字孪生、联邦学习、物联网等新兴技术的发展,网络流量呈爆发式增长,多路径传输方案可以聚合多条路径带宽提高网络利用效率,并利用冗余路径来增强传输的持久性、可靠性,因此受到广泛关注。然而现有多路径传输方案容易受到路径之间... 随着数字孪生、联邦学习、物联网等新兴技术的发展,网络流量呈爆发式增长,多路径传输方案可以聚合多条路径带宽提高网络利用效率,并利用冗余路径来增强传输的持久性、可靠性,因此受到广泛关注。然而现有多路径传输方案容易受到路径之间时延和丢包率差异的影响造成接收方缓冲区阻塞,无法在复杂环境中提供稳定的高质量服务。为解决上述问题,论文提出了一种基于喷泉码的多路径传输方法(FMTP),通过利用喷泉码的随机性避免了缓冲区阻塞问题,消除了对重传和有序分组传输的需要。此外,FMTP采用自适应在线学习速率调整算法根据路径状况调整路径发送速率,能够在快速收敛的基础上最大限度地提高网络利用率,实验结果表明即使在非对称链路中FMTP也能保持高效可靠的传输性能。 展开更多
关键词 多路径传输 拥塞控制 喷泉编码 模糊逻辑
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基于信任度和喷泉码的多路径安全传输方法 认领 引用
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作者 李跃洪 刘建航 +2 位作者 赵重阳 孟旭 晁展 《计算机与数字工程》 2026年第1期184-189,209,共6页
如何实现移动自组网的安全可靠通信一直受到广泛关注,信任评估方法常用于保障数据的安全传输,但由于移动自组网具有高动态的拓扑结构和强对抗的组网环境,信任评估难以检测出所有恶意节点。为了提高数据传输的安全性和可靠性,论文提出了... 如何实现移动自组网的安全可靠通信一直受到广泛关注,信任评估方法常用于保障数据的安全传输,但由于移动自组网具有高动态的拓扑结构和强对抗的组网环境,信任评估难以检测出所有恶意节点。为了提高数据传输的安全性和可靠性,论文提出了一种基于信任度和喷泉码的多路径安全传输方法。通过建立信任评估模型计算网络节点的信任度,并设计了基于信任度的最短可靠路径路由算法k-RSP用于计算可信路径,k-RSP可根据传输数据的安全级别动态规划传输路径数量;利用喷泉码的特点,在多路径上传输编码包,从而确保数据的安全可靠传输;仿真结果表明,该方法可有效提升网络数据传输的交付率,即使网络存在潜在的漏检恶意节点,该方法仍有较好的传输性能。 展开更多
关键词 移动自组网 网络攻击 喷泉码 多路径路由 安全传输
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面向多可用区云存储的分层喷泉编码研究 认领 引用
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作者 孙婧 王弈 陈海燕 《计算机科学》 CSCD 北大核心 2026年第6期367-375,共9页
在现代多可用区(Multi-AZ)云存储系统中,故障呈现出显著的层次化与相关性特征。传统的纠删码(如RS码)或扁平化喷泉码方案往往忽略了物理拓扑结构,导致在处理频发的局部故障时产生高昂的跨AZ修复带宽,且难以兼顾异构网络下的灵活性。针... 在现代多可用区(Multi-AZ)云存储系统中,故障呈现出显著的层次化与相关性特征。传统的纠删码(如RS码)或扁平化喷泉码方案往往忽略了物理拓扑结构,导致在处理频发的局部故障时产生高昂的跨AZ修复带宽,且难以兼顾异构网络下的灵活性。针对这一问题,提出了一种面向多可用区环境的分层AZ-Fountain编码模型。该模型将喷泉码的无码率特性与多AZ故障域结构进行显式耦合,设计了双层编码架构:在AZ内部采用局部优化双模态度分布(AZ-OBMD),以实现零跨区流量的局部修复;在全局采用Raptor-link度分布(AZ-RLD),以保障AZ级灾难下的高效恢复。实验结果表明,与RS码、LRC及最新的AZ-Code相比,所提方法在局部单块故障下能够与LRC一样保持零跨AZ流量,且其参与解码的数据块数量与修复延迟更低;在AZ级灾难恢复中显著降低了修复延迟与传输开销,实现了可靠性与修复代价的系统性权衡。 展开更多
关键词 多可用区 分布式存储 喷泉码 分层编码 跨区修复带宽
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复杂电磁环境下的图片传输机制优化研究 认领 引用
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作者 柯昌骏 张锦明 +1 位作者 曾诚 许道峰 《通信技术》 2026年第6期646-655,共10页
针对复杂电磁环境下无线信道弱连接、高丢包的传输特性,以及图片传输对数据完整性、高效性的需求矛盾,提出了一种基于喷泉码的改进型应用层传输机制,实现了复杂无线场景下图片传输的性能优化。通过设计传输协议和基于喷泉码的图片传输... 针对复杂电磁环境下无线信道弱连接、高丢包的传输特性,以及图片传输对数据完整性、高效性的需求矛盾,提出了一种基于喷泉码的改进型应用层传输机制,实现了复杂无线场景下图片传输的性能优化。通过设计传输协议和基于喷泉码的图片传输收发流程,完成原型软件的开发与实现,并结合广播、点对点可靠传输两类典型场景开展对比实验。实验结果表明,与传统多次冗余重发机制相比,基于喷泉码的图片传输方式在复杂电磁环境下能够保持接近100%的传输成功率,且显著降低时延增幅,对提升复杂电磁环境下的图片传输效率具有一定理论价值与工程意义。 展开更多
关键词 复杂电磁环境 喷泉码 传输协议优化 广播场景 点对点传输场景
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Fountain码编译码算法结构的改进 认领 引用 被引量：2
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作者 冀保峰 高宏峰 张冀 《电讯技术》 2008年第7期10-13,共4页
在LT码的基础上对Raptor码进行了分析。根据IRA码的结构及其线性时间的编译码特性,提出了Raptor码和IRA码相结合的改进Fountain码结构。研究结果表明,该结构既保持了线性的编译码特性又能有效增强信元的恢复能力。利用其它编码技术与Rap... 在LT码的基础上对Raptor码进行了分析。根据IRA码的结构及其线性时间的编译码特性,提出了Raptor码和IRA码相结合的改进Fountain码结构。研究结果表明,该结构既保持了线性的编译码特性又能有效增强信元的恢复能力。利用其它编码技术与Raptor码相结合是今后进一步的研究方向。 展开更多
关键词 Fountain码 预编码 不规则重复累积码 数据传输 可靠性
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Fountain码编译码技术的研究 认领 引用 被引量：2
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作者 冀保峰 高宏峰 《通信技术》 2008年第11期66-68,共3页
通过从Fountain码的其中一种LT码的度数分布入手进行分析,发现LT码易出现停止集。针对LT码的缺点分别将汉明码和RS码作为Fountain码的预编码对其进行了改进并仿真。仿真结果证明预编码可以降低停止集出现的概率。通过对Hamming-Fountai... 通过从Fountain码的其中一种LT码的度数分布入手进行分析,发现LT码易出现停止集。针对LT码的缺点分别将汉明码和RS码作为Fountain码的预编码对其进行了改进并仿真。仿真结果证明预编码可以降低停止集出现的概率。通过对Hamming-Fountain码和RS-Fountain的仿真对比表明RS-Fountain码具有更高的恢复能力。 展开更多
关键词 Fountain码 LT码 汉明码 预编码 RS码
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Fountain码译码的改进方法 认领 引用
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作者 张冀 高宏峰 师春灵 《通信技术》 2011年第6期54-56,共3页
Fountain码的无速率特性使得它可以在信道删除率未知的删除信道下高效传输信息。但是由于传统的Fountain码(主要是LT码和Raptor码)在译码过程中未对差异信息进行处理,丢失了部分可以被译出的信息,从而增加了译码代价。针对传统Fountain... Fountain码的无速率特性使得它可以在信道删除率未知的删除信道下高效传输信息。但是由于传统的Fountain码(主要是LT码和Raptor码)在译码过程中未对差异信息进行处理,丢失了部分可以被译出的信息,从而增加了译码代价。针对传统Fountain码这方面的缺点,提出一种利用消除度数为2的校验单元来处理差异信息的Fountain码译码的改进方法。仿真结果验证,采用该方法不但保证了Fountain码的无速率特性,而且提高了信息利用率和译码效率。 展开更多
关键词 Fountain码 差异信息 校验单元
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水声网络基于优先级与可Zigzag解码的在线喷泉码 认领 引用
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作者 杜秀娟 王玉杰 +1 位作者 柳秀秀 赵建 《计算机应用研究》 CSCD 北大核心 2025年第3期895-902,共8页
水声网络(underwater acoustic network,UAN)具有长传播时延、高误码率、半双工通信等特性,这些特性严重影响了UAN中数据的可靠传输。而在线喷泉码具有在线控制、编解码复杂度低、码率自适应等诸多优势,在线喷泉码适合于保障UAN中数据... 水声网络(underwater acoustic network,UAN)具有长传播时延、高误码率、半双工通信等特性,这些特性严重影响了UAN中数据的可靠传输。而在线喷泉码具有在线控制、编解码复杂度低、码率自适应等诸多优势,在线喷泉码适合于保障UAN中数据的可靠传输。针对递归与限制反馈的在线喷泉码(recursive OFC with limited feedback,ROFC-LF)存在不理想覆盖和4元环问题导致略高的开销和频繁的反馈,提出适用于UAN的基于优先级与可Zigzag解码的ROFC-LF(priority-based and zigzag-decodable ROFC-LF,P-ZROFC-LF)。P-ZROFC-LF在建立阶段选取具有最高优先级的原始包进行编码直至所有原始包均参与编码。同时,引入可Zigzag解码编码,将无用编码包进行移位异或转换为有用编码包来提高解码性能。通过随机图理论,分析P-ZROFC-LF所需编码包数与原始包数之间的关系。理论分析与仿真结果表明,与大部分在线喷泉码相比,P-ZROFC-LF显著提高了反馈和开销性能。其中P-ZROFC-LF相比于ROFC-LF的反馈和开销分别减少了18%和0.0176,更适用于UAN。 展开更多
关键词 水声网络 在线喷泉码 可Zigzag解码 反馈 开销
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PROFC-LF:水声网络基于优先级的ROFC-LF码 认领 引用
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作者 王玉杰 杜秀娟 +1 位作者 柳秀秀 赵建 《传感技术学报》 CAS CSCD 北大核心 2025年第7期1270-1279,共10页
针对具有限制反馈的递归OFC(Recursive OFC with Limited Feedback,ROFC-LF)存在不理想覆盖问题而造成略高的冗余开销和反馈,提出基于优先级的ROFC-LF(Priority-based ROFC-LF,PROFC-LF)。PROFC-LF在建立阶段预先指定原始包优先级,随后... 针对具有限制反馈的递归OFC(Recursive OFC with Limited Feedback,ROFC-LF)存在不理想覆盖问题而造成略高的冗余开销和反馈,提出基于优先级的ROFC-LF(Priority-based ROFC-LF,PROFC-LF)。PROFC-LF在建立阶段预先指定原始包优先级,随后选取具有最高优先级原始包进行异或编码直至所有原始包均参与编码,从而减少连通组件数量。此外,PROFC-LF在建立阶段前增设预建立阶段,在此阶段采用记忆选取方式,选择并发送少量度1编码包来提高中间解码率。通过随机图理论分析PROFC-LF所需编码包数和原始包数之间的关系。理论分析与仿真结果表明,PROFC-LF在反馈、开销、能耗等方面优于大部分在线喷泉码,其中PROFC-LF相比于ROFC-LF反馈、开销和能耗分别减少了13%、15%和0.75%;增加预建立阶段的PROFC-LF提高了中间符号恢复率。最后在青海湖真实水声网络中验证了所提机制的可行性。 展开更多
关键词 在线喷泉码 水声网络 反馈 开销 中间符号恢复率
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