Non-binary modulation-coded scheme for the space two-way relay channels by Lei YANG, Song JIN, Bo-yang CAI, Jian-ping AN

“…A non-binary irregular repeat-accumulate (IRA) modulation-coded physical-layer network coding (PNC) scheme was proposed for the space two-way relay channels (TWRC) to improve the information exchange rates of space information networks.In the scheme,a same non-binary IRA modulation code was employed at two users.This configuration enabled the recovery of the network coded information sequence from the superimposed signal directly by the relay.The optimized non-binary IRA modulation code was obtained by using extrinsic information transfer (EXIT) chart analysis.Numerical results demonstrate that the proposed scheme can reduce the duration of information exchange by about 48% compared to the conventional time divided multiple access scheme.…”
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Congestion control mechanism based on data delivery probability in DTN data dissemination network by Yi XIA, Guang-hong DENG

“…A congestion control mechanism based on data delivery probability (CCM-DP) was proposed to work out the decline of data delivery performance on account of data congestion in delay tolerant networks (DTN) network coding-based data dissemination process.Considering the node mobility model,data delivery probability and data congestion degree,the data delivery probability model was constructed,and the congestion control mechanism was designed from two aspects,on the one hand,by the means of adjusting the packet forwarding process,it equilibriums the data packet delivery to avoid node congestion caused by too many packets received; and on the other hand,through the design of efficient discarding strategy,it reduces the impact of packet loss caused by data congestion.Ultimately,it was put into use in data dissemination process and some simulations were taken,the simulation results show that,CCM-DP can improve data delivery performance in data congestion environment.…”
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Mobility model detection method based on birth and death model in DTN environment by ENGGuang-hong D, AOWan-hua C, HANGJian Z, HENGXiong C, ENGLi F

“…A mobility model detection method based on birth and death model (MMD-BDM) in DTN environment was proposed.It first computed the connected channel capacity of sampling times according to the data traffic during the data transfer process,and then constructed the time varying intercommunication metrics at local,which composed of channel capacity between local node and others.Based on these,the connection birth and death mode of nodes based on connected edges was deduced,and then the birth and death features of the connected nodes was analyzed to detect the mobility model,which used to improve the routing strategy during the packages deliver process.Ultimately,the mobility model detection method was put into use in spray and wait routing (SWR) method and random network coding routing (RNCR) method to experiment,the simulation results show that,it can improve the opportunity routing performance of the data deliver rate and transfer latency in DTN environment.…”
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Semantic segmentation of 3D point cloud based on contextual attention CNN by Jun YANG, Jisheng DANG

“…Aiming at the under-segmentation of 3D point cloud semantic segmentation caused by the lack of contextual fine-grained information of the point cloud,an algorithm based on contextual attention CNN was proposed for 3D point cloud semantic segmentation.Firstly,the fine-grained features in local area of the point cloud were mined through the attention coding mechanism.Secondly,the contextual features between multi-scale local areas were captured by the contextual recurrent neural network coding mechanism and compensated with the fine-grained local features.Finally,the multi-head mechanism was used to enhance the generalization ability of the network.Experiments show that the mIoU of the proposed algorithm on the three standard datasets of ShapeNet Parts,S3DIS and vKITTI are 85.4%,56.7% and 38.1% respectively,which has good segmentation performance and good generalization ability.…”
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An Energy-Efficient Transmission Protocol for RNC-Based Cooperative WSNs with Partial Energy Harvesting Nodes by Yulun Cheng, Longxiang Yang

“…A new EH decoding-recoding policy is proposed by regarding the EH constraints and the characteristics of random network coding. We develop an energy efficiency model to investigate the tradeoff mechanism between the saved energy and the waiting time of the EH node, through which the corresponding parameters in the policy are also optimized. …”
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Comparative Study of Generalized Quantitative-Qualitative Inaccuracy Fuzzy Measures for Noiseless Coding Theorem and 1:1 Codes by H. D. Arora, Anjali Dhiman

“…In coding theory, we study various properties of codes for application in data compression, cryptography, error correction, and network coding. The study of codes is introduced in Information Theory, electrical engineering, mathematics, and computer sciences for the transmission of data through reliable and efficient methods. …”
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Reliable Adaptive Video Streaming Driven by Perceptual Semantics for Situational Awareness by M. A. Pimentel-Niño, Paresh Saxena, M. A. Vazquez-Castro

“…Systematic random linear network coding (SRNC) adds reliability while preserving perceptual semantics. …”
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Side Trip Multipath Routing Protocol for Spatial Node Failure in Data-Gathering WSNs by Keisuke Fujita, Yumi Takaki, Chikara Ohta, Hisashi Tamaki

“…In the STNC scheme, redundant packets from different source nodes are network-coded into an encoded packet in order to reduce the number of redundant packets and the impact on the system lifetime. …”
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SENSITIVITY ANALYSIS OF AVALANCHE PHOTODIODE AND PIN DIODE DETECTORS IN OPTICAL RECEIVERS by ELECHI PROMISE, ORIKE SUNNY, MINAH-EEBA WINNER, EZINNE IKPO CHIKERENMA

“…The design parameters which were taken into consideration were a constricted transmitter, Zender modulator, attenuator, lowpass Bessel filter, Non-Return-to-Zero modulation format, CW laser, avalanche photodiode (APD) and PIN diode detectors and the type of network coding, Bit Error Rate Analyzer (BER) etc. The objective was achieved using optisystem 7 professional simulation software layout to design the power system budget and optical receiver circuit, the avalanche photodiode and PIN diode were used as the detector. …”
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Retracted: A Novel Adaptive Terahertz System for Reliable and Efficient Maritime Communications Under Hostile Sea Conditions by Jianxin Feng, Jingjing Xu, Chengsheng Pan, Yuanming Ding, Hui Fang

“…Specifically, we design a joint source-channel coding scheme by using system random linear network coding (sRLNC) and Reed-Solomon (RS) to ensure transmission reliability. …”
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New Perspectives on Classical Meanness of Some Ladder Graphs by A. M. Alanazi, G. Muhiuddin, A. R. Kannan, V. Govindan

“…The ladder graph plays an important role in the area of communication networks, coding theory, and transportation engineering. …”
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