Adaptive energy-saving routing algorithm for inter-clustering communications in WSN by Wen-feng LI, Lian-feng SHEN, Jing HU

“…An adaptive routing algorithm was proposed for saving nter-clustering communication energy in wireless sensor networks (WSN).In the network,the end-to-end route discovery mechanism was based on the primary principle of the minimum communication costs.An algorithm was prop sed for inter-clustering communication optimization by adaptively selecting the most energy-efficient communication mode among direct,relaying and cooperative communications.The proposed routing algorithm guarantees that the source node can discover the minimum or sub-minimum energy consumption route to the base station.It also decreases the probability that the communications are interrupted due to the coverage holes.Compared with the other routing algorithms,the simu tion results show that the proposed routing algorithm makes WSN consume less energy in each round under the same throughput and bit error ratio (BER).It can also prolong the network lifetimes and operation times under the different node densities.…”
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Optimum response scheme of intrusion detection based on information theory by Youliang TIAN, Yulong WU, Qiuxian LI

“…Intrusion detection system (IDS) often inevitably presents major security risks caused by FPs and FNs.However,at present,an effective solution has not been found.In order to solve this problem,an optimal response model of intrusion detection based on information theory was proposed.Firstly,the intruder and IDS in the process of intrusion detection were abstracted into random variables,and the attack and defense model of intruder and IDS was constructed according to the results of the confrontation.Secondly,the defense channel of IDS was designed according to the attack and defense model,then the correct detection of IDS was transformed into the problem of successful transmission of 1 bit information in defensive channel.Finally,the defensive capability of the system was measured by analyzing the channel capacity of the defensive channel,the maximum mutual information of the defensive channel was the defensive limit capability of the IDS,and the corresponding strategy distribution was the optimal response strategy of the defensive capability of the system.The experimental results show that the scheme can effectively reduce the loss caused by FPs and FNs.…”
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Using Trapezoidal Intuitionistic Fuzzy Number to Find Optimized Path in a Network by P. Jayagowri, G. Geetha Ramani

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Filter-Based Fading Channel Modeling by Amirhossein Alimohammad, Saeed Fouladi Fard, Bruce F. Cockburn

“…The performance of the proposed filter design algorithm is verified with 16-bit fixed-point simulations of two example fading filters.…”
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Study on an effective integrated model of Ka-band mobile satellite channel by Juan WEI, Da LIU, Gang-qi TIAN

“…In order to describe the Ka-band mobile satellite communications channel fading features more realitically,a mobile satellite integrated channel model was proposed.The characteristics of the mobile satellite propogation channel were analysed in detail.Weather conditions,as well as multi-path fading and shadowing were taken into account as main influencing factors.On this basis,airspace channel model was built obeying the Gaussian distribution as well ground surface,which obey Rice,Rayleigh and Lognormal joint distribution.Then the integrated channel model was presented considering weather effects on condition that the two parts are independent each other in the influence of the channel characteristics.The mathematical analysis model and simulation model of the new integrated channel model were established respectively.Finally,the BER(bit error rate)performance was analyzed for different weather conditions and shadows.Compared with the theoretical BER,the integrated channel model in satellite mobile communication systems is correct and reasonable.…”
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Iterative joint source channel decoding for WMSN by YANG Yang, CHEN Yong-rui, ZHAO Jun-lin, YI Wei-dong

“…An iterative joint source channel decoding （ISCD） scheme for WMSN is proposed, based on a soft-input-soft-output （SISO） a posteriori probability decoding algorithm for variable-length coded sources, which leads to not only maximum likelihood （ML） sequence estimation but also the computation of bit-based reliability values which are necessary for ISCD. …”
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Continuous noise covert transmission scheme based on QCSK by Ying HUANG, Zehan WAN, Jing LEI, Ke LAI

“…The existing embedded scheme requires far lower transmission power of the covert system than that of the host system, and thus decreasing the reliability of covert transmission.To figure out the above limitations, a continuous noise covert communication scheme based on quadrature chaos shift keying (QCSK) was proposed.The QCSK signal containing covert information and artificial noise were transmitted alternately, and the illegal energy detection was effectively resisted by the continuity of noise which has strong concealment in both time and frequency domains.Furthermore, extremely low power was not required to meet the demand of convert communication in QCSK, whereas allowing the increase of transmit power under the condition that the performance of the host system to improve the performance of covert transmission.Theoretical analysis and simulation results show that the bit error rate (BER) of covert transmission brings two orders of magnitude improvement compared with the existing scheme at BER=1×10^-7 for host system.…”
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La traduction anglaise de Maria Stuarda : paradoxes et contradictions d’une reine catholique et puritaine by Pierre Degott

“…If Donizetti’s work already offers, via Schiller, a somewhat revised version of History, the translation and recontextualisation of the opera pushes the transformation a little bit further. The paper thus examines some of the religious and historical aspects of such a cultural transfer, but also some of the musical modifications brought to the score. …”
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Carrier frequency synchronization technology in UFMC by Lu YANG, Ping HE, Shan WANG

“…In view of the problem that the universal filtered multi-carrier（UFMC）system is sensitive to carrier frequency offset,a frequency synchronization algorithm was proposed.For the sake of keeping good features of UFMC system and reducing the complexity of filter design,the algorithm designed a pilot sequence which sub-bands are orthogonal,and used the non-linear least square algorithm（NLS）to realize the frequency offset estimate.In order to further improve the performance of algorithm in low signal to noise power ratio（SNR）environment,the receiver could process data by constructing sequence and calculating the correlation of estimated signal.Simulation results demonstrate that the designed pilot is superior to all-one pilot in terms of both bit error rate（BER）and CFO performance over additive white Gaussian noise（AWGN）and rayleigh fading channel.And in low SNR environment,the improved algorithm has better performance than NLS algorithm under CFO.…”
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Improvement of SRv6 SID structure by Yonglin TANG, Feng LIU

“…IPv6-based segment routing (SRv6) is a new technology addressed by IETF in recent years.In draft-ietf-spring-srv6-network-programming,the 128-bit segment identifier (SID) was structured,and how to be processed in one node was described.The SID structure defined by the draft was improved.A field named “network”was defined in the SID to identify different virtual sub-networks.It was also pointed out that the SID list in the segment routing header (SRH) did not carry the “Network”,and only carried the locator,function and argument,which could effectively reduce the requirements of the multi-layer SRv6 segment identifier list requirements on the chip processing capability and reduce the overhead in SRv6 networks.To improve the effective utilization of network bandwidth,and at the same time lay a solid foundation for the use of SRv6 network slicing,and promote the large-scale use of SRv6.…”
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Multiple access based on three-stage modulation in multi-band OFDM-UWB system by BAO Zhi-hua, ZHANG Shi-bing, ZHANG Guo-an, QIN Jin-jing

“…According to the characteristics of multi-band orthogonal frequency-division multiplexing ultra-wideband（OFDM-UWB） system,a multiple access based on three-stage modulation（TSM-MA） was proposed.It combined multi-carrier code division multiple access（MC-CDMA） with orthogonal frequency division multiple access（OFDMA） and frequency hopping multiple access（FHMA）,carried out the advantages of the three multiple access techniques.It reduced the multiple access interference and made full use of the available resource of the channel.The two-stage spread spectrum and two-stage frequency hopping were used to the TSM-MA for reducing the complexity of receiver.Simula-tion results showed that TSM-MA has obvious advantages in bit error rate（BER） performance over time frequency code multiple access（TF-MA） about 3 dB and lower complexity than that of TF-MA.…”
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LRST: searching tree anti-collision algorithm with low-redundancy by Qiong HUANG, Jiang-tao LING, Min ZHANG, Xiao-long YANG

“…Depending on the most significant collided bit, the collided tags respond in the first or second slot separately. …”
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Research on 5G upstream bandwidth detection technology and application by Guobin XU, Zhewei FU, Ming LIU, Zhiji DENG, Cungang WANG, Guanghai ZHONG, Hui LI, Wei MENG, Yunjie WU

“…A scheme of 5G upstream bandwidth detection technology and application was proposed, which could effectively solve the problem of 5G network fluctuation in video monitoring data transmission process.It will help the deployment of 5G video monitoring application.By obtaining the radio resource information of 5G NR, the terminal can count the transmission resource and estimate the change trend of uplink bandwidth.Combined with the intelligent coding technology and bit-stream adaptive technology of streaming media application, the scheme ensures no stuck and continuous picture at the cost of losing a little video definition, and ensures the overall experience of customers.The scheme can be widely used in the scene of heavy 5G public service, large network fluctuation and wide network coverage, such as campus video surveillance.…”
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Novel antenna selection algorithm for STBC and VBLAST hybrid coding systems by LI Ren, JIANG Yong-quan, LI Xiao-yan, ZHANG En-zhan

“…Multiple-input multiple-output （MIMO） systems improve the bit error rate （BER） performance, meanwhile,in order to reduce the impact to system capacity, a novel antenna selection algorithm for space-time block coding （STBC） and vertical Bell laboratories layered space time （VBLAST） hybrid coding systems was proposed. …”
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Doppler Estimation Based on Frequency Average and Remodulation for Underwater Acoustic Communication by Chan-Ho Hwang, Ki-Man Kim, Seung-Yong Chun, Sang-Kook Lee

“…When the channel coding technique was not applied, the uncoded bit error rate performance of the proposed method was improved about maximum 50.3% compared with conventional method.…”
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A Spread Spectrum Sequence for MC-CDMA System by Zhicheng Zhang, Xiaona Huang, Li Xiong

“…The MC-CDMA system takes the advantages of the OFDM system and the CDMA system.The MC-CDMA system is a kind of wireless communication aroused an ongoing and growing research interests,which has the characteristics of high bit transmission rate,high bandwidth efficiency,anti-jamming,and a large system capacity.Since the MC-CDMA system includes the multi-carrier modulation,it is difficult to design a spread spectrum sequence performing not only a high level of self-correlation and cross-correlation but also a low peak-to-average power ratio in the MC-CDMA system.To solve this problem,a spread spectrum sequence which was modulated by Golay code and m sequence was proposed.The spread spectrum sequence proposed owned a good performance in self-correlation,cross-correlation and peak-to-average power ratio.The simulation results show the effectiveness and the superiority of the proposed spread spectrum sequence.…”
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An Embedded Cloud Design for Internet-of-Things by Teemu Laukkarinen, Jukka Suhonen, Marko Hännikäinen

“…The design is evaluated with a prototype implementation, where PDL and DiMiWa are executed on a small 8-bit microcontroller-based IoT device. The implementation requires only 5122 B of program memory (4% of the available), consumes under 1 ms of CPU time per process in the worst case, and allows over 100 simultaneous services per device.…”
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Blind separation algorithm of PCMA signals with different symbol rates based on DG-PSP by Yi-ming GUO, Hua PENG, Yong YANG, Xue-juan WEI, Hao WANG

“…A blind separation algorithm was proposed for PCMA signals with different symbol rates based on double grid per-survivor processing (DG-PSP).The channel states and two input signal components were treated as two dynamic grids,receiving mixed-signal reconstructed by respectively iterative updating the two groups of grid status,thus achieving blind signal separation.The joint iterative decoding separation structure was focused,and a detailed analysis and comparison under different error estimation of parameters was shown.The complexity of the algorithm is similar to the traditional PSP algorithm.Simulation results show that,a gain of about 2 dB in signal-noise ratio can be obtained after the first iteration at a bit error rate of 10⁻²,and a gain of nearly 3 dB in signal-noise ratio can be obtained after the second iteration.…”
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Successive interference cancellation receiver algorithms for uplink STBC coded MC-CDMA systems by ZENG Yan-xing, YIN Qin-ye, DENG Ke, DENG Jian-guo

“…Simulation results demonstrate the proposed algorithms outperform the ZF receiver algorithm in both independent and correlated fading channels and they require 4 dB less signal-to-noise ratio than the traditional one for a bit error rate of 10?6.…”
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16QAM-LFM waveform design for integrated radar and communication by Hao ZENG, Lixia JI, Feng LI, Chuang LI

“…A kind of high-order integrated radar communication waveform pulse was proposed,which combined 16QAM and LFM together.The new waveform took LFM signal as the carrier of the 16QAM,so that high communication capacity was achieved and the radar performance was not impacted.The analysis and computer simulation for the 16QAM-LFM waveform show that the new waveform has the same bit error rate as the classic 16QAM signal and larger spectrum efficiency compared with the integrated waveforms such as BPSK-LFM and MSK-LFM.Furthermore,the computational complexity of 16QAM-LFM is less than the existing OFDM-LFM waveform.On the other hand,16QAM-LFM has higher distance resolution and speed resolution than the traditional LFM pulse signal since its ambiguity function looks like a thumb tack.And the detection probability of radar is similar as traditional LFM pulse signal for the slowly moving object.…”
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