Requirements-oriented spectrum sharing for OFDMA cognitive radio networks by Chi ZHANG, Bi-qing ZENG, Jin-song YANG, Xiao-hong XIE

Subjects: Get full text

Novel half-duplex relay strategy and its resource allocation by LI Yong, WANG Wen-bo, KONG Jia, PENG Mu-gen

Subjects: Get full text

Code design with high rates based on quasi-orthogonal space-time block code by WANG An-guo, SHEN Qiong, NIE Zhong-er

Subjects: Get full text

Optimum response scheme of intrusion detection based on information theory by Youliang TIAN, Yulong WU, Qiuxian LI

Subjects: Get full text

Fundamental performance limits of CPM coded modulation system by Bing LI, Fan WEI, Bao-ming BAI, Xiao MA

Subjects: Get full text

Establishment and performance analysis of RIS-assisted coded relay cooperation system based on LDPC product codes by Shunwai ZHANG, Jin WANG

Subjects: Get full text

Performance analysis of dual-hop PLC-FSO communication system by Shenghai CHEN, Xiaoqin YAN, Sai LI, Liang YANG

Subjects: Get full text

Measurement based modeling and validation of wireless MIMO channel models by A. A. Kalachikov, N. S. Shelkunov

Subjects: Get full text

Comparisons and validations on MIMO channel simulation models by Xiongwen ZHAO, Bo GAO

Subjects: Get full text

A channel visiting strategy based on joint optimization of probability of handoff failure and capacity of secondary user by Mengdi XU, Ming JIN, Jingwen TONG

“…The available channel visiting strategy for spectrum handoff mainly considers the probability of handoff failure more than the channel capacity.Aiming at the problem,anovel spectrum suitching channel visiting strategy was proposed based on the probability of handoff failure and the channel capacity foins optimixing of secondary user.It was proved that the maximum channel capacity of secondary user can be obtained by visiting the channel in the descending order of the signal to noise ratio(SNR),and the minimum probability of handoff failure couldbe obtained in the descending order of the mean vacant time duration.Then the mean vacant time of channel and SNR for sorting and weighted combination was processed of non-parameterization.At last,the channel was visited in descending order according to the result of non parametric processing.The numerical results show that the proposed method can increase the channel capacity of secondary user by about 50%,while keeping the probability of handoff failure close to the minimum.…”
Get full text

Angular Circle Array Multiple Input Multiple Output Underwater Optical Wireless Communications by Zhuoqi Chen, Yuhe Liu, Xiang Yi, Ruiqin Zhao

“…The path loss, CIR, and channel capacity of the angular circular array MIMO communication system are calculated by using the Monte Carlo method. …”
Get full text

Power Resource Allocation Algorithm for Dual-Function Radar–Communication System by Yue Xiao, Zhenkai Zhang, Xiaoke Shang

“…In this paper, a power allocation algorithm of dual-function radar–communication system with limited power is proposed to obtain better overall system performance measured by the weighted summation of radar signal to interference plus noise ratio (SINR) and communication channel capacity. First, a power allocation model is established to maximize the radar SINR and communication channel capacity with limited transmitted power. …”
Get full text

Effect of wireless gateway on incoming self-similar traffic by ZHANG Jie, WU Yuan-ming

“…In the analysis of the changes as the self-similar cable network data enters the wireless network through wire- less gateway, the simulation results show that, the self-similarity does not change when the gateway works on real-time forward or power control mode, and its buffer equals wireless channel capacity; the self-similarity and state duration of EAFRP model will increase when the gateway works on power control mode and its buffer is much greater than wireless channel capacity.…”
Get full text

Dynamic pilot assignment in massive MIMO system based on user classification by Jinyan ZHANG, Feng JIN, Lixin YIN

“…Aiming at the problem of pilot contamination in massive MIMO system,a dynamic pilot assignment strategy based on user classification was proposed.The target cell user was divided into the central user and the edge user based on the variance of target cell user signal intensity.The central user used the maximum C/I algorithm to assign pilots to maximize the channel capacity of the central user.The edge user used greedy algorithm to assign pilots to improve the signal to interference and noise ratio of each edge user.Simulation results show that the proposed strategy can improve the channel capacity of the system while improving the signal to interference and noise ratio of the edge user.…”
Get full text

New dimension in vortex electro-magnetic wave transmission with orbital angular momentum by Chao ZHANG, Yuanhe WANG

“…Moreover, the formula of Shannon channel capacity containing OAM dimension is given, and the significance of power multiplexing of new dimension for capacity enhancement is specified. …”
Get full text

Polar codes and polar processing for 6G wireless systems by Kai NIU, Jinchen DAI, Jinnan PIAO

“…As the first type of channel code achieving the channel capacity,polar codes are an important candidate for the 6G data transmission.A polarized processing framework for the 6G systems was proposed.In this framework,in order to fulfill the requirement of ultra-reliable transmission,a high-performance coding scheme of concatenated polar code was designed to approach the channel capacity with finite-length.Then,the polar coded MIMO scheme was devised to match the requirement of the high spectrum efficiency.Finally,the scheme of polar coded non-orthogonal multiple access was investigated to improve the transmission capacity.All these schemes indicate that polar processing can dramatically boost the performance of 6G wireless transmission and become a promising direction.…”
Get full text

Breaking fundamental limits of quantum entanglement distribution with quantum switch by XU Ruiqing, ZHOU Rigui, LI Yaochong

“…Then the tighter upper bound of channel capacity was derived by using teleportation simulation of quantum channel, the tighter lower bound was derived on the basis of Hash inequality. …”
Get full text

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.…”
Get full text

Computational communication for three-dimensional dense coverage in 5G systems:architecture,approach and gain by Jinkun CHENG, Wei CHEN, Yuanming SHI

“…An integrated mobile computational communication architecture for three-dimensional dense coverage in indoor environment was proposed,and the proposed network architecture thus unified the computational electromagnetics,computational information theory and large-scale optimization into computational communication theory.Moreover,the implementation of the architecture was introduced.Specifically,the dense heterogeneous distributed radio access network was served as the wireless radio access network for the proposed computational communication architecture.Furthermore,computational electromagnetics based on channel propagation computing was implemented in parallel using the distributed computation resources.Given the exact channel propagation coefficients,the computational information theory based on channel capacity computation,as well as large-scale optimization based on multiuser network resource allocation were also achieved by the powerful computation resources.The proposed computational communication theory can thus compute the channel capacity and design power allocation scheme directly from propagation environment.…”
Get full text

Layered Capacity-Based Relay-and-Antenna Joint Selection for MIMO-AF-Multiple-Relay Systems in Correlated Channels by Chia-Chang Hu, Jheng-Siang Li, Bo-Liang Wu

“…Finally, simulations are conducted to compare the channel capacity of the proposed two-layered antenna selection technique with other existing antenna selection algorithms for half-duplex AF-MIMO multiple-relay systems.…”
Get full text