Advanced Materials Research Vol. 981

Abstract: Existing vortices volumes of chaotic signal control and create just increase the limitations of system complexity, and put forward the phase space vortex roll signal control alone method. The first use of Simulink Jerk system established the visualization model, Jerk system to delay feedback control, get the phase space of track not at the intersection of vortices roll chaotic attractor, then puts forward two methods-tracking method and the balance point estimate method is to make sure that each vortex roll attractor parameter range of chaos, realized the phase space of vortices volume control signal path, finally, to phase space area division, given the division standard and regional boundary, mathematical model of that work for more into the study of the method of chaotic modulation system to provide a idea and may.

Abstract: Due to the advantages of ultra-wideband, single caliber, symmetric pattern, full polarization, the sinuous antennas have gradually displaced the traditional spiral antennas in the Missile guider, reflector feed, wideband direction finding system. Based on the traditional planar sinuous antennas, this paper designed a novel 2-22 GHz 3D sinuous antenna in the conical form. Results show that the designed antenna showed high performance within 2-22 GHZ frequency band.

Abstract: The adjacent strong edge chromatic number of graphs can be applied to the optimization design of wireless sensor network to make the network design more reasonable. An algorithm,based on the basic principle of page sorting technology, is designed to search for the adjacent strong edge coloring of certain join graphs. Therefore, the adjacent strong edge chromatic number of a join graph is obtained, and it can avoid the repetition of wireless sensor network.

Abstract: Resource Block (RB) allocation effects network coverage and throughput. The impact principles are analyzed in theory. Exist TD-LTE network data is collected, organized and analyzed. The results show that the effects of RB allocation on user rate in downlink is greater than uplink and uplink RB usage is more stable.

Abstract: Energy-harvesting Wireless sensor networks have gained more and more attention in recent years. For traditional battery-powered WSNs, the effect of transmission power on the throughput capacity and the lifetime have been well studied. The throughput capacity of WSNs is defined usually as the largest common throughput that can be provided to each source-sink pair nodes. Researches showed that high transmission power increases the throughput capacity of WSNs However, the high transmission power leads to a high energy consumption, thus the tradeoffs between the capacity and the lifetime under different transmission power have been analyzed.

Abstract: In this paper, the modified fast directional multilevel algorithm (FDMA) is presented for analyzing microstrip patch. The FDMA has been successfully applied to analyze scattering in free space and then it was extended to solve mircrostrip problems. The quad-tree structure is used in this method, which is the same as that in fast multipole method. In our method, the finest level group size can be set smaller than 0.2λ without suffering from subwavelength breakdown. The resulting algorithm has the memory requirement and the CPU time per iteration proportional to O (NLogN), where N refers to the number of unknowns. Numerical results of microstrip structures are presented to show the efficiency of this method

Abstract: The research progress of the typical hybrid routing protocol (ZRP, Zone Routing Protocol) in ad hoc networks is analyzed, which includes the analysis on ZRP and the analysis on ZRP related research. This work can provide a reference of basic theory research of ZRP for experts and scholars. And it will get ready for the further research work in the future.

Abstract: Mobile prediction idea refers to predicting link expiration time with relative velocity and relative position between different nodes. In ad hoc networks, mobile prediction idea is adopted in MSWCA, and cluster stability is measured by link expiration time. MSWCA only considers on intra-cluster stability, and neglects inter-cluster stability. Aiming at the above problem, MPICA (Mobile Prediction Idea based Clustering Algorithm) was proposed. Firstly, involved concepts were given with mathematical quantitative description. Secondly, the realization process of MPICA was described. Lastly, the complexity of MPICA was analyzed. MPICA considers intra-cluster and inter-cluster stability at the same time, which is in favor of improving cluster stability and reducing cluster maintenance overheads.

Abstract: The existing wired monitoring systems for coal mine main-fan has some shortcomings such as complex working environment, bad flexibility and low reliability and so on. This paper developed a main-fan automatic monitoring system based on wireless sensor network with ZigBee technology, including monitoring host, sensor node, coordinator node and several data acquisition sensor. In order to meet requirements of coal mine environment monitoring signals, CC2430 is chosen as master control chip. The system achieved functions of automatic monitoring of coal mine main-fan supported by ZigBee technology, which is stable, low power consumption, and has practical value and bright development prospect.

Abstract: In order to explore the method of collaborative decision of command and control, first of all, the relationship between chaotic decision and collaborative decision is compared, the complexity and chaos of the system of collaborative decision is discussed from the theoretical level, on this basis, chaos characteristics of decision system is described bytheorem.