Coalitional Game Theoretical Approach for VANET Clustering to Improve SNR by Selo Sulistyo, Sahirul Alam, Ronald Adrian

“…Further simulation results show that the proposed method can obtain a higher average of V2V SNR and channel capacity than other relevant methods.…”
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Enhancing System Capacity Through Joint Space‐Ground Multi‐Beam Coordination for LEO Satellite Systems by Yuyang Liu, Tong Shi, Hua Wang

“…The first method is to optimize the channel capacity by rationally allocating the beam power of the gateway station so that the gateway station can achieve transparent forwarding through satellites. …”
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Capacity Improvement for DVB-NGH with Dual-Polarized MIMO Spatial Multiplexing and Hybrid Beamforming by Huu Trung Nguyen, Trung Tan Le, Trung Hien Nguyen

“…The performance results on bit error rate, channel capacity, and beampatterns show that the proposed hybrid beamforming and dual-polarized MIMO spatial multiplexing schemes provide more robustness against signal interference by beamforming and/or nulling techniques. …”
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Secure channel estimation model for cognitive radio network physical layer security using two-level shared key authentication by K. Saravanan, K. B. Gurumoorthy, Allwin Devaraj Stalin, Om Prakash Kumar

“…The deep learning algorithm verifies the authentication completeness for maximum channel capacity utilization irrespective of adversary interference. …”
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On the MIMO Capacity for Distributed System under Composite Rayleigh/Rician Fading and Shadowing by Santiago González-Aurioles, J. L. Padilla, P. Padilla, Juan F. Valenzuela-Valdés, Juan C. Gonzalez-Macias

“…Using a composite fading model, the total channel capacity can be studied for a scenario with short-term Rayleigh fading along with shadowing. …”
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Computer Simulation and Field Experiment for Downlink Multiuser MIMO in Mobile WiMAX System by Kazuhiro Yamaguchi, Takaharu Nagahashi, Takuya Akiyama, Hideaki Matsue, Kunio Uekado, Takakazu Namera, Hiroshi Fukui, Satoshi Nanamatsu

“…It was confirmed that the experimental mobile WiMAX system for MU-MIMO transmission successfully increased the total channel capacity of the system.…”
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Application of multi-antenna technology based on the indoor scene by Chongyang LI, Guoan HU, Boyong FAN, Yongping ZHU

“…Multi-antenna technology is the key technology of high speed broadband wireless access network,it has a broad application prospect in the fourth generation mobile communication systems.Indoor coverage is the main business for mobile communication.It is very important to use the MIMO technology to solve the problem of indoor wireless communication.Focused on the theme of wireless MIMO technology in the indoor coverage,MIMO channel capacity,indoor channel modeling,indoor coverage systems were mainly analyzed.…”
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Investigations on the effects of scatterers on the MIMO channel characteristics in LOS environment by LIU Lei-lei, HONG Wei

“…The effects of scattering objects on MIMO（multiple input multiple output） channel characteristics in line-of-sight（LOS） environment were investigated.The study was focused on the outdoor LOS environment but with a scatterer.The analytical mathematical expressions were derived to describe the MIMO channel matrix,where the microstrip an-tennas and 2-D cylindrical scatterer were considered.The MIMO channel capacity and the condition number of the ma-trix were investigated.From the simulation results of the MIMO channel characteristics of the model,some suggestions for practical MIMO system design are proposed.…”
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Analysis of resource bottleneck in 4G network by Yuezhen WANG, Ke YIN, Jiansheng LIANG, Yu CHEN

“…The technical capability of LTE network was analyzed,which included cell throughput,channel capacity of PDCCH ,PHICH and PUCCH,random access capacity,paging capacity and so on.Then,based on the technical ability,the consumption and occupancy of network resources such as PRB,PDCCH CCE,PUCCH,PRACH,paging,RRC connection were analyzed.Finally,the bottleneck resources which restrict the LTE network to provide more customer service were deduced,and the bottleneck index proposal which focuses on the construction and operation optimization was put forward.…”
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Multilevel transmission scheme for wireless broadcasting system by SUN Xiang-tao1, GONG Ke2

“…A multilevel transmission scheme was developed to take full advantage of the transmission channel capacity and meet the requirements of different users and different types of receiving equipments.In this scheme,broadcasting datas were divided into different levels of error protection and transmission rate by using multilevel coding and multi-resolution modulation techniques.Multistage decoder was adopted,which allowed user to receive data at different rate according to its transmission channel quality or its receiver ability.Simulation results show this scheme has good performance over both AWGN channel and multipath channel.…”
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A Cross-Layer FL-Based Clustering Protocol to Support Multicast Routing in IoT-Enabled MANETs With CF-mMIMO by Amalia Amalia, Yushintia Pramitarini, Ridho Hendra Yoga Perdana, Kyusung Shim, Beongku An

“…The cross-layer design integrates physical layer information such as mobility (speed and direction), position, channel capacity, and remaining energy, with network layer information (connectivity) to maximize the cost function value for cluster formation. …”
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Analysis and application evaluation of precoding method based on low-band communication system by Di WU, Yijun SUN, Zherui MA, Tao MA

“…Also their beamforming effect, interference suppression capability and channel capacity were analyzed. Simulation results show that the antenna system can achieve relatively good performance.…”
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Secure Transmission Based on Antenna Selection for Network Coding System by Dan Deng, Ming Zhao, Guizhou Jian

“…Simulation results show that the selection scheme of combined main channel capacity maximum（CMCCM）outperforms other schemes with the most computation burden. …”
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Performance analysis of multi-relay DF cooperative communication system based on directional antenna by Mingwei WANG, Huisheng ZHANG, Lixin LI, Lifeng HE

“…In order to achieve reliable communication in multi-relay cooperative communication，the directional antenna combining multi-relay cooperative communication system and optimal relay selection decode-and-forward cooperative strategy was presented.Firstly，the theoretical closed form of outage probability of the communication system using directional antenna operating in the three modes of DT-DR，DT-OR and OT-OR were presented.Then for three kinds mode，the collaboration communication system interrupt probability and signal-to-noise ratio，the number of relay nodes，the antenna gain channel fading efficiency and relationship between the channel capacity were analyzed in numerical simulation.These findings reveal that excellent performance of cooperative communication system with directional antennas could be achieved such as smaller outage probability and improved by best relay nodes and optimal power allocation coefficient.…”
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A Double-Threshold Based Spectrum Allocation Algorithm in Cognitive Radio System by Jiongtao Wang, Ming Jin, Youming Li, Jingjing Zheng

“…Based on the spectrum allocation of Underlay model in cognitive radio systems,a double-threshold based spectrum allocation algorithm was proposed.Two signal-to-noise radio（SNR）thresholds were also given.If SNR is less than the small threshold,aiming to maximize the channel capacity of the primary users,some second users are chosen to cooperate with primary users to communicate data.If SNR is larger than the big threshold,considering to maximize the number of the second users accessing the spectrum,some second users are allowed to use the occupied spectrum with low power.If SNR is between the two thresholds,primary users occupy the spectrum alone.Simulation and numerical results illustrate the reliability of the theoretical analysis.…”
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Security-reliability tradeoff scheme for cognitive relay networks with eavesdropping attack over Nakagami-m fading channels by Xingpeng WANG, Xiaorong XU, Andi HU, Wei FENG

“…Physical layer security (PLS) and reliability tradeoff scheme in a cognitive decode-and-forward (DF) relay network consisting of one source,one destination and multiple relays was investigated.A best relay selection scheme (BRS) against eavesdropping attack was proposed,in order to guarantee the maximum secure main link channel capacity.Traditional direct transmission scheme was taken into consideration as a benchmark.In addition,security-reliability tradeoff (SRT) performance was presented.Numerical results show that the proposed SRT scheme strictly outperforms traditional direct transmissions in terms of SRT performance.SRT performance can be enhanced obviously with the increasing of relays and Nakagami channel fading factor m for a given numbers of relays.…”
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Impact of Vehicular Array Position on Urban MIMO Channel Characteristics by Christopher C. Squires, Tricia J. Willink

“…Specifically, shadowing from the vehicle combined with the directionality of the side-mounted array elements affects the angular distribution and powers of the received multipath components, affecting the achievable diversity and channel capacity. This can have significant impact on system performance and should be considered when designing and analyzing vehicular-based signalling techniques.…”
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Research of channel quantization and feedback strategies based on multiuser diversity MIMO-OFDM systems by LIANG Xue-jun, ZHU Guang-xi, SU Gang, WANG De-sheng

“…Firstly, a quantization method was proposed by quantized value indicating the modulation level instead of the full values of channel quality information（CQI） and the achievable average spectrum efficiency showed no loss compared with perfect case.Secondly, employment of the integrated design that combined with opportunistic, best, and hybrid feedback scheme was considered and the close-form expression of average spectrum efficiency was deduced in various case.Finally, the calculation of optimal feedback parameters was confirmed from two aspects of feedback channel capacity and capacity relative loss.Extensive simulations were presented to evaluate these proposed strategies.The results match with the numeral analysis very well.The proposed partial feedback schemes can reduce the feedback load greatly with the same system capability, only if the feedback parameters be chosen properly.Wherein, the hybrid feedback combined with quantization performs best and provides the instruction to design the channel feedback of practical systems.…”
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Analysis of MIMO antenna array based on electromagnetic vector sensor by Jie ZHOU, Lin QIU, Kikuchi HISAKAZU

“…EVS(electromagnetic vetor sensor) signal processing method was combined with traditional MIMO signal processing method and three-dimensional channel model of multi-antenna array was set up.The algorithm of multiple signal classification (MUSIC) was adopted to make spatial spectrum estimation for direction of arrival (DOA) signal,analytical expressions of three-dimensional spatial channel was derived base on EVS for MIMO receiver system and the relationship between EVS signal processing and MIMO multipath channel correlation was clarified.To compare with tra-ditional MIMO antenna array,EVS array possesses abilities of obtaining multidimensional polarization information,processing spatial and polarization domain for arrival signal and degrading effects of spatial factors on MIMO channel capacity.Theoretical analysis and simulation results indicate that EVS array provide more advantages than traditional scalar sensor array on enhancing MIMO system performance.…”
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Influence of thunderstorm cloud on the performance of satellite-to-ground quantum link and parameters simulation by Min NIE, Li SHI, Guang YANG, Chang-xing PEI

“…In order to investigate the effect of thunderstorm cloud on the performance of satellite-to-ground quantum link,according to the extinction cross section and the number concentration distribution function of the charged particle in the thunderstorm cloud,the relationships among the particle concentration,charge density and link attenuation of charged particles in atmosphere were established.The relationship between the atmospheric concentration of charged particles,the charge density on the average channel capacity,channel fidelity,channel survival function and bit error rate of quantum key distribution system were put out.The simulation results show that the thunderstorm cloud has a significant effect on the performance of the satellite-to-ground quantum link.So in order to improve the reliability of satellite-ground quantum communication,the system parameters should be adjusted according to the forecast of the thunderstorm cloud.…”
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