Abstract： With the popularization of wireless products, the performance requirements of antennas are becoming higher and higher, and the need to develop high performance antennas has becoming more and more important. Because of its own characteristics, the metamaterials have been widely used in the design of high performance microstrip antenna. In addition, because of the complexity of the design parameters and the design objectives, the global optimization algorithms have been introduced into the antenna design gradually, which can realize the optimization design of the microstrip antenna patch and the metamaterial structure.

Abstract：Small Cell is an important emerging technology of LTE. It is an indispensable part for hotspot service, coverage enhancements of enterprise users and indoors, mainly used to improve network capacity, optimize network deployment. Based on extensive study of LTE-A standard and OFDM technique, together with characteristics of Small Cell, this paper analyzes the current situation of Small Cell research discovery technology. In the end, we make summaries and predictions through comparison.

Abstract：A RTSP streaming media server based on TMS320DM8168 embedded platform is designed in this paper. The hardware and software of TMS320DM8168 are analyzed in detail,so as the working principle and process of implementation of RTSP server. As TMS320DM8168 as core, after the process of analog to digital conversion, pretreatment, H.264 encoding, and local storage, we package real-time video data encode by H.264 as RTP model. Finally, we send the data to the network for real-time transmission. The results of test have proved our system can perform well on 16 road D1 video monitoring in real-time.

Abstract： The disaster rescue robot system based on the embedded system which uses Intel Atom E645C processor as the core is designed, it uses a variety of virtual reality and visual sensor technologies. In order to replace the manual work in hazardous environments, we realize the function of remote-controlling robot arm to synchronously simulate the human arm′s movements. The system uses C/S mode, and the server platform is responsible for the information collection of arm′s movements, while the client platform is in charge of the collection and transmission of live video, as well as the control of bionic robot arm. The System can achieve the expected function, and has a good performance on the feature of real timing and robustness.

Abstract： In order to improve reliability of solar tracker control system and debug system facility, a solar tracker control system based on STM32 was designed. This is a single-shaft system，the system gets the solar panels’ location by GPS first, then an algorithm is used to calculate the azimuth of the sun, then driving motor and the solar panels will follow the sun. The system uses ZigBee to realize wireless IAP. The system sends all information to background by ModBus. There are multiple operation model to protect solar panels from winding or snowing weather. The system divides the flash of STM32 into BootLoader area, main program area and backup program area to improve the reliability of the system.

Abstract： Aiming at performance limitations of the traditional LCD display controller in processing multi-channel image data synthesis, a design of LCD display controller for multi-channel image data synthesis used for embedded system is proposed. It uses FPGA as core device for display controller, inputs data via both video and 8080 interfaces, loads and accesses data by SDRAM coordinate controller, finally displayed by a series process of synthesis, stack and sending into LCD. Experiments result shows that the LCD display controller can realize multi-channel image data input, synthesis and display with good performance and good stable operation，this controller can be applied to embedded systems for special image processing requirements because of the portability and scalability.

Abstract：Spectrum leakage usually occurs when signal-cutting digital signals. Window function can improve the spectral leakage characteristics of the signal-cutting signals. The improved scheme of window function is proposed about rectangular Window, Hamming Window, Hanning Window and Blackman Window based on FPGA. The four window functions are designed to optimize their resources comsume and running speed, thereby improving the performance of spectrum leakage. This method use a resource sharing technology, a reasonable choice of data widths and choose a suitable number of iterations for CORDIC module. In order to optimize the speed use the appropriate pipeline technology, which greatly improve the process speed performance. The simulation shows that the proposed optimization system works properly，and 20%~51% of logic resources of system decreases. Timing constraint in systems reached 360 MHz. The signal attenuation the first stage of Blackman window reached 59.3 dB.

Abstract： Camera module consist of lens, IR-cut filter, VCM, driver IC, CMOS image sensor. Image sensor and driver IC is LSI CMOS component, so it is also ESD sensitive component. The main content is as following：(1)How to design ESD protection of camera module, and it contains electrical design and structure design. (2)Study of HBM, it contains how to build up HBM. (3)ESD waveform simulation and test, it contains how to build test evironment, and compare target and real waveform.

Abstract： Aiming at the problems of software sorting, such as slow speed, small sorting data volume and large occupancy of CPU resource, a hardware sorting system based on FPGA(Field Programmable Gate Array) is designed. This system has the following characters: sorting process adopts DMA(Direct Memory Access), without occupying the CPU resource; data transmission adopts SISO(Serial Input Serial Output), lessening the internal wiring resources of FPGA and enhancing the system reliability. The sorting hardware model is verified through Modelsim simulation tool. The simulation result shows that the hardware sorting system can effectively improve the sorting efficiency and reduce CPU usage rate.

Abstract： This paper presents a new architecture of Hybrid ADC based on SAR ADC and dual slope ADC used for sensor system. Based on this architecture, the 16 bits A/D converter was designed, which has a system clock frequency of 1 MHz for a supply voltage of 5 V with an input voltage from 0.5 V to 4.5 V. The SNR of the ADC can reach 90 dB, effective bit is about 15 bits. What’s more, it only takes 28 times the period of clock faster than 216 times the period of clock of the traditional dual slope architecture. This architecture not only can reach higher resolution than dual slope analog-to-digital converter but it′s conversion speed greatly accelerate due to the adoption of SAR architecture.

Abstract：A structure of multistage decimation filter with half-band filter preposed was designed taking advantages of half-band filter(HBF) and cascaded integrator-comb filter, for satisfying down sampling demands of high-speed digital signal in digital down conversion of software defined radio receivers. A decimation filter with down sampling ratio of 64 was implemented on Xilinx xc5vsx95t-2ff1136 FPGA using Xilinx design suite 12.3 after verifying by building system model utilizing Simulink. Simulation results of Modelsim SE 6.5 proved that the design was efficient and that the designed goals were achieved.

Abstract：Based on the analysis of LTE230 electric power wireless communication system，a new type of high performance , low cost and low power baseband chip for LTE230 wireless communication is designed aiming at the existing problem of current LTE230 terminal platform. The chip structure and key technology are described in detail, and combined with the two type typical application scenarios of bandwidth requirement for power distribution and utilization business in smart grid, a terminal implementation solution based on this chip is provided.

Abstract： A design is completed using LabVIEW software and Siemens PLC as a subordinate unit of the filter material performance testing system. Control system design is completed the filter material tested, the test results show that the system is high precision, repetition is good, stable, a good user interface and a high degree of automation, meet the design requirements.

Abstract：Carbon nanotube film is a kind of new nanomaterials composed of carbon atoms and can be made into a new kind of loudspeaker based on the thermophone theory. The method to add a clamp circuit is offered to solve the frequency distortion optimization problem in the carbon nanotube thin film loudspeaker system. This solution has been theoretically and experimentally investigated in this paper. Results indicate that the output acoustic frequency is equal to the input voltage frequency after adding the clamp circuit. Besides, the acoustic energy increases significantly and the sound pressure level(SPL) improves about 5 dB. Compared with the traditional way to add the direct current bias, the solution in this paper dispenses with the direct-current power supply and reduces system power consumption.

Abstract： Motor drive system of dual-channel underwater TV, which is widely used in nuclear power plant, has the shortcoming of large volume and high weight, a small 10 channels direct-current(DC) motor drive system is designed and realized to drive all actions of underwater TV. The drive system selects C8051F340 as its core controller, and receives the instruction package of the host through the USB module. According to the decoding instruction, the SPI interface is adopted to program two DRV8823 to achieve the drive of 6 motors, and the PWM signal is outputted to drive two DRV8412 to achieve the drive of 4 motors. Experiments show that the motor drive system can drive 10 DC motors, and it is of high reliability, small volume and less heat.

Abstract：To eliminate the cumulative errors caused by sensor and the impact of posture optimal estimation created by surrounding environment random errors, a quad-rotor attitude algorithm system based on STM32 is discussed in this paper. The system includes microprocessor ST32F405 and low-cost AHRS. Using quaternions coordinate conversion, the system fuses the data of gyroscope, accelerometer and magnetic compass, the attitude deviation adopts double loop PI controller and uses complementary filter algorithm to calculate aircraft attitude information. And a semi-physical simulation platform of the four rotor wing aircraft is built to simulate the attitude of the aircraft. Experiments prove that the attitude algorithm system solves the noise interference and optimal estimation of attitude and achieves the requirement of steady, accurate and reliable data output for a long time.

Abstract：Based on the islanding detection algorithm of active frequency-drift with positive feedback method, a self-adapting method is presented to surmount the disadvantages of the former. The self-adapting algorithm used the new initial chopper factor to replace the old and dynamically adjust the positive feedback parameter according to the rate of change of voltage frequency of the point of common coupling(PCC). The non-detection zone(NDZ) is reduced, and the testing time is shortened. Considering the power grid voltage fluctuations, it decreased the influence on output current. The phase of theoretical analysis and simulation results show that the self-adapting method is feasible and advantage.

Abstract：Proposed to design a storage system based on multiple pieces DDR3-SDRAM-more BANK transmission technology，used in high speed video image transmission. Camera Link bus technology is used to receive video image data，the DDR3-SDRAM is used to store data，the system software is setup，encode the data，and simulated and analyzed the DDR3-SDRAM- more BANK storage. The results show that the DDR3-SDRAM-more BANK storage technology can effectively improve the work efficiency of DDR3-SDRAM, can meet the requirements of the high-speed video storage.

Abstract：The high mobility of vehicles and existing of obstacles in urban area make the communication link between vehicles to be unreliable. In this environment, most geographical routing protocols does not consider stable and reliable link during packet orwarding towards destination. Thus, the network performance will be degraded due to large number of packet losses and high packet delay. An improved geographical routing in urban vehicle Ad Hoc networks is proposed in this paper, which is marked as IGR.The proposed IG incorporates relative direction between source vehicle and candidate vehicles, distance between candidate node and destination and beacon reception rate,considering the fact that wireless link between vehicles is unstable, in contrast to most routing protocols, the IG protocol favors a candidate vehicle that has stable link with the source during packet forwarding.We implemented and evaluated the proposed IG protocol and then compared with existing routing solutions. The comparison shows superiority of our proposed routing solution in terms of packet delivery ratio and end to end delay as compared to the RBVT-R, GPCR.

Abstract：A novel chaotic spread spectrum communication scheme-multiple access orthogonal differential chaos shift keying(MA-ODCSK) is proposed,which based on differential chaos shift keying(DCSK) and correlation delay shift keying(CDSK). The scheme combines Walsh codes and symbols function’s characteristics to overcome the existing problems of DCSK and CDSK,which shows the advantages of high transmission rate, high reliability, good communication secutity and so on. Simulation results show that the multi-user interference is suppressed due to the orthogonality of Walsh code.The novel MA-DCSK has better performance than frequency modulated differential chaos shift keying(FM-DCSK) and frequency-modulated high efficiency differential chaos shift keying(FM-EDCSK) when the number of users is certain.

Abstract：Long Term Evolution-Advanced(LTE-A) system has the demands of high rate and low latency. However, interference in the system seriously affects the signal quality received by the terminal and limits the increasing of system performance. For inter-cell co-channel interference, Interference Rejection Combining(IRC) technology has better performance and is studied. There are two kinds of classical covariance matrix estimation schemes of IRC. One is based on data, and other is based on DM-RS references. Combining the advantages and disadvantages of these two programs, the method of selecting the sample points and computing covariance matrix is improved. Simulation results show that the improved IRC algorithm has 1-2dB performance gain compared with the one based on DM-RS references. It’s more suitable for LTE-A system affected by co-channel interference.

Abstract：In cognitive radio Ad-Hoc networks, the stability of a route is highly influenced by the behavior of the primary users. In order to adapt this circumstance, a real-time channel allocation routing protocol(RT-CAR) was proposed. The RT-CAR protocol adopts the discovery mechanism of the dynamic source routing(DSR) protocol. In routing establishing stage, an integrated routing metric is proposed to select the route. In data transmission phase, IN MESSAGE packets were introduced to transmit the SOP information between the adjacent nodes. So that the intermediate nodes can grasp the channel environment of their next hop to realize the real-time channel allocation. Simulation shows that the RT-CAR protocol improves the packets delivery ratio effectively, and it has a fewer route reconstruction times.

Abstract： In order to achieve a high-rate data transmission and good outfield reception performance in engineering project, LTE systems typically use a minimum mean square error(MMSE) channel estimator. Against the poor adaptability of traditional MMSE algorithm for time-varying multipath channel, an adaptive parameter MMSE channel estimation coefficient adjusting algorithm is proposed. This algorithm estimates the channel RMS delay spread (RMS Delay Spread) and SNR and calculates the channel estimation parameters adaptively to generate sub-optimal MMSE channel estimator coefficients. Simulation results show that the algorithm has a better channel estimation performance than the traditional fixed coefficients MMSE channel estimation algorithm.

Abstract： In this paper, asymmetric two-way relay channel model for unmanned aerial vehicle was established according to the characteristics of the environment of unmanned aerial vehicle network communication. An asymmetric multistage phase shift keying physical-layer network coding scheme was proposed by the study in physical layer network coding for the model above, furthermore, the interrupt probability and the bit error rate of the scheme is deduced as theoretical expression. Otherwise, the proposed scheme was verified by experiments, and various asymmetric phase shift keying modulation modes of system performance were analyzed through the experiments. It can provide theory basis for design and performance evaluation for the physical-layer network coding in unmanned aerial vehicle network communication.

Abstract：As the low robustness and high complexity problem of traditional digital speech watermarking algorithm, a digital speech watermarking based on SVD decomposition and eigenvalues quantization in discrete wavelet domain is proposed. Eigenvalues quantization in discrete wavelet domain is the base of the proposed algorithm, firstly, discrete wavelet transform is used to transform every frame of the digital voice into wavelet domain; Then, SVD singular value decomposition is used to calculate the eigenvalues of approximate coefficient, rather than part of the detail coefficients; Finally, the watermark bits were embedded by quantization of the eigenvalue. The experimental results show that when quantization step size and the length of the selected frame are high, the algorithm can effectively resist filter attacks, additive white Gaussian noise attack, resampling and cropping attack, where the bit error rates of Gaussian white noise attacks and cut attacks are almost zero. Compared to other outstanding algorithms, the proposed algorithm has better robustness.

Abstract： Focused on the problem of privacy preserving, storage and transmission overhead in information collection system of the smart distribution network, a data transmission scheme with masking parameters was proposed. The scheme fused data privacy protection and data integrity authentication scheme to build a safe and reliable data transmission environment. The result of theoretical analysis and experiment show that, this scheme, can not only reduces the storage and transmission overhead, but also uses the privacy protection and improves the security of transmission in the condition of numerous nodes, which is more suitable for information collection system in smart distribution network.

Abstract： The computational cost of the existing RFID security protocols is high or the existing protocols can’t defense the all kinds of the popular RFID attacks, a secret identity and one-way hash function based highlight security protocol. In the first phase, tag registers to dataset, dataset assigns a one-time secret identity and one unique secret key to the tag; in the second phase, the mutual authentication of tag-reader-dataset is processed by one-time secret identity and one-way hash function, and the detection and defense power of all kinds of attacks is realized. At last, the proposed protocol is compared with several recent mutual authentication protocols, the results show that, the proposed protocol has similar computational cost and memory cost with the other methods, but the proposed protocol can defense complete attacks.

Abstract：Wireless nanosensor networks are novel networks and nanonodes in the networks can work in Terahertz band. Researches are mainly focused on physical layer; however, study of routing protocol in this field is still in an initial stage. Consequently, a novel multi-hop routing protocol based on network conditions is proposed. In our routing protocol, the area of candidate nodes is narrowed in order to control the direction of multi-hop forwarding. A link cost function is established to trade off energy consumption, capacity and distance, taking the peculiarities of Terahertz channel into consideration. Several nodes with low link cost have the probability to be selected as a next hop, which prolongs the lifetime of nanosensor networks. Simulation results show that the protocol we proposed can achieve high throughput and low energy consumption, which is a suitable routing for Terahertz nanosenor networks.

Abstract：Discuss the false data injection attack deeply in smart grid, which distorts the real data values. For it, we propose a general key authentication framework including two-tier encryptions. The scheme contains an inner-cluster encryption process by adapting the homomorphic cryptography technique and an inter-cluster authentication process by using topology-based symmetric encryption technique. Detailed authentication steps are given to demonstrate the feasibility and efficiency of our scheme. We evaluate our proposed method, and the results of comprehensive evaluations show that our scheme achieves good performance in terms of smart grid security with low overhead/cost on key update.

Abstract： Most of current DoS/DDoS attack detection algorithms apply to the destination of attack, which only perform detection rather than mitigation. In this paper, we proposed a multi-level defense system which performs real-time traffic monitoring at the source of attack leveraging centralized control of SDN architecture. Combining methods of antiIP spoofing, access layertraffic detection and link traffic detection, our system achieves early detection of attack, filters anomaly traffic gradually, thus detects and mitigates network layer DDoS attack at the source. Furthermore, we proposed the defense architecture concept, which helps to improve our defense system with more advanced algorithms in future.

Abstract： The limitation of data capacity of black-and-white barcodes has been unable to meet the needs for users, accordingly, a method of generating and recognizing colorized Quick Response(QR) codes based on Gzip compression algorithm was designed which the encoding color could be arbitrarily selected. When encoded with 2k colors , each module can be encoded K binary data. The data capacity of the colorized QR codes was substantial increased by increasing the number of colors and Gzip compression algorithm. The method was not necessary to use any reference color to deal with the correction of color cast in the decoding process which significantly reduce the computational complexity and preserves the strong reliability and robustness properties of QR. The data capacity and computational complexity of 4 and 16 colorized QR codes are analyzed and compared. The results show that the colorized QR codes based on Gzip compression algorithm is an effective method for information embedding.

Abstract： In order to obtain accurate position information of the target on the industrial assembly line,a method of multiple workpieces positioning under complex environment concurrently was proposed. Firstly, combined with image pyramids search strategy, used a matching algorithm based on edge gradient to identify the target under complex environment and obtain the accurate located information of the objects on the image-coordinate system quickly. Then, using the ZHANG Z Y chess board method for calibration of monocular camera,got the camera's internal parameters and the lens distortion coefficient. Finally, establishing a simple, accurate coordinate transformation method, to transform the position of the target in the image coordinate system to the world coordinate system.Experimental results show that this method can accurately position the target in a complex background, partial occlusion and nonlinear illumination, so it was highly robust.Beside,it can identify industrial targets within an average time of 0.5 s, the positioning error of the target on x-o-y plane is less than 1 mm and the attitude angle positioning error is less than 1°,which obviously meet the requirements of real-time and accuracy under complicated environment in industrial applications.

Abstract： The Standard Genetic Algorithm(SGA) adopts constant crossover probability as well as invariable mutation probability. It has such disadvantages as premature convergence, low convergence speed and low robustness. Traditional adaptive genetic algorithm can improve the effect of convergence speed，however,when the operator adaptive adjustment, the algorithm of the different stages in the evolution process of focus is not enough(the search space, search precision, excellent model of the preservation and evolutionary dynamics), makes the algorithm convergence speed, stability and diversity not good. This paper puts forward an improved adaptive adjustment algorithm, and crossover operator and mutation operator in accordance with the individual fitness by the Logistics curve of the nonlinear adjustment makes the operator meet in the process of the evolution of different stages of the requirement of the search space and search accuracy. The experimental results show that the new algorithm than the traditional adaptive genetic algorithm on the convergence speed, stability and good solution on diversity has the advantages.

Abstract： With Web-based Internet application environment is becoming more and more widely, Web application security issues become increasingly prominent. For Web application hacking problems, presents a security application model based on Bayesian Stackelberg game. In this model，an improved payoff calculation method is presented, which takes the counterattack as well as cost parameters and benefit parameters of both sides′strategies into account. And the payment of both offense and defense able to be calculated more accurately. Model uses the advantages of the leader, the defender can calculate the optimal mixed strategy with DOBSS algorithm. The example analysis proves the effectiveness of the model and algorithm.

Abstract：In order to satisfy increasing complex calibration requirements of new energy automotive electronic control system, using the widely accepted industry norms ASAP as the software development standards of calibration system, and using the internationally accepted XCP calibration protocol, based on TI′s multi core singlechip TMS320F28M35E20B, implement a measurement and calibration system for vehicle control of new energy vehicles. It mainly includes the design of A2L file parser, measurement and calibration module, XCP protocol stack and the underlying software system. Software is represented based on modular and hierarchical structure. The measurement and calibration system is verified on laboratory bench successfully with good results.

Abstract：Given the relatively less and immature research on handover between terrestrial communications and satellite ones, the thesis has made a deep research on the handover techniques and methods between the GMR-1(Geostationary Earth Orbit Mobile Radio Interface) and FDD-LTE (Long Term Evolution). The joint handover algorithm is introduced and discussed deeply based on the TOPSIS (Technique for Order Preference by Similarity to Ideal Solution) in the thesis by analyzing respectively the characteristics of satellite communications and the terrestrial ones. As the inputs of the TOPSIS algorithm, five attributes are considered including strength, bandwidth, delay, cost and degree of satisfaction relating to the received signal of the network. Furthermore, the handover decision of output network is processed by introducing handoff timer, total received signal strength and handover control to time of duration. Thus, the accuracy of handover makes a remarkable improvement. Compare with the lagged threshold strategy, this kind of handover strategy reduces average handover frequency and greatly avoids the handover ping-pong effect, leveling the system service and improving the user experience.

Abstract： In recent years, along with the continuous renewal of substation equipment and substation integrated operational work step by step, to the safety management of the operations staff has brought new challenges, and the hidden trouble of safety precontrol can greatly improve the level of safety management. This article in view of the present substation operations work faces new challenges and problems, this paper introduces the substation operational safety hidden trouble and hidden trouble in the work the concept of precontrol and common security hidden danger in substation operations work and its preventive measures are analyzed in detail, puts forward the comprehensive methods to solve the safety problems and put forward constructive substation operations homework safety problems solving process, safe hidden trouble for the effective control counter, so as to effectively guarantee the operation safety of personnel and equipment, guarantee the safe and stable operation of power grid.

Abstract：As all of inbound services centralize to state grid，Shandong province center use new trunk gateway to replace exist avaya voice call center platform according to SGCC’s uniform requirements. So we have lots of equipment idle. Most of this equipment still very advanced and commissioned few years, system status very good. This article plan to research and improve this AVAYA voice call center platform. A portion reuse as new State Grid voice gateway’s backup system, other portion reuse as new business voice platform. This solution reused exist idle equipment, improved 95598 core system’s reliability, simultaneously provide a new available voice call center platform.

Abstract：The transmission section has been regarded as the important object to be monitored, analyzed and controlled in the power system security analysis and emergency response for a long time. This article presents a deep and complete transmission section analysis from three different perspectives of power flow transferring section, transmission corridor and electromagnetic loop, then proposes the searching method of transmission section.The concept of flow transferring relativity factor and the power flow transferring section based on this concept is described, then proposes the searching method based on cut-vertex and K shortest patchs; It proposes the method for determining tie-line and the node contraction partition. With the principle of consistency of power flow, transmission corridor is determined; It also points out that electromagnetic loop network, as a special case, can show the multi-voltage coupling relations among transmission corridors. The New England 39-node system and IEEE 118-node system is used as examples to illustrate the accuracy and efficiency of the proposed searching method.

Abstract：With the development of the power grid, power communication network has been in development and changes for many years. This paper through the research and analysis of power communications and the public network operators, formulate the design’s principles and methods of power communication network indicator system. On this basis,this paper builds a set of complete index system of the power communication network, and carrys on the example analysis, then verifies the science and rationality of the index system. The results of this study can provide a scientific reference and basis for planning, design, operation and maintenance of the power communication network.This study has a certain practical significance.