基于Memetic算法的电路演化设计研究

 针对传统演化算法在设计数字逻辑电路时存在的演化速度缓慢和容易陷入局部最优解等问题,设计了一种Cartesian进化编程编码的电路演化Memetic算法,采用遗传算法作为全局搜索方法,并设计了适合电路演化的基本门种类局部搜索策略.通过一位全加器电路证明所提出的Memetic硬件演化算法的搜索能力,实验证明所提出的算法能够有效地完成进化任务,具有较强的全局快速和局部搜索能力.     

复杂数字电路的分解演化研究

针对制约演化硬件技术发展所面临的可扩展性问题,提出了一种GD．BIE分解演化方法,它将待演化电路按照先输出分解后输入分解的顺序,逐步分解为多个子电路,最后将演化成功的子电路有规律的综合完成目标电路的演化设计。实验证明,该分解方法能有效解决大规模电路演化中存在的染色体编码长、最大适应度高、演化代数多、输入输出真值表组合复杂的问题,为较大规模电路演化提供了一种有效途径。     

小生境演化算法下的WDCT图像压缩方法

针对传统WDCT图像压缩编码算法频率卷曲参数的难选取问题,提出了小生境演化算法下的WDCT图像压缩方法(NEAWDCT).利用小生境演化算法全局寻优的特点,与WDCT图像压缩编码方法相结合,达到自适应选取最优频率卷曲参数的目的.针对频率卷曲参数特征,设计染色体编码方式及演化算子,以加快收敛速度.由于图像能量多集中于低频部分,选择特定范围内的数值初始化种群,不仅能加快算法收敛速度,还保留了种群的多样性.实验结果表明,利用新的NEAWDCT算法生成的WDCT矩阵能有效提高峰值信噪比.     

一种新的基于真值表分解技术的电路加速演化策略

硬件演化技术在电路演化过程中具有自组织、自适应、自修复性能,具有重要的工程应用价值,硬件演化技术能够实现的核心就是演化算法。目前中等规模及大规模电路演化的时候存在演化速度慢等缺陷,直接影响电路演化的时效性。提出了一种新颖的电路加速演化策略,即基于真值表分解的电路演化策略,从不同的角度对电路演化算法进行了改进,有别于常规的改进演化算法。通过对典型电路进行仿真分析,证明了所提出的加速演化策略的有效性,并且具有重要的应用价值。     

基于基因表达式程序设计的电路优化算法研究

基于Xilinx Virtex-Ⅱ系列FPGA控制逻辑块(CLB)矩阵特点以及每一个控制逻辑块能实现任何2输入1输出的逻辑功能的特点,提出了一种基于基因表达式程序设计的电路优化算法。在该算法中染色体由按线性方式连接的逻辑单元矩阵组成,采用的遗传操作包括变异和杂交,并利用真值表进行适应度评估。实验证明,所得到的电路结构优于传统方法。     

基于强化学习和分块并行的演化硬件方法

演化硬件（EvolvableHardware,EHW）是可编程逻辑器件和进化算法的结合,可根据不同演化目标自主动态调整自身电路结构.在演化硬件方法中,由于其自演化特性和上层遗传算法为参数敏感型,面对不同演化对象自适应性较差.同时遗传算法有早熟缺陷,在大型演化目标后期经常无法演化到目标真值表,成功率较低.本文在传统演化硬...     

一种可测性调度分配方法

提出一种基于演化算法的可测性调度分配方法.应用演化算法,在调度和分配过程中研究电路的可测性设计.该方法的贡献是:给出了三个可测性准则;设计了可测性目标函数;提出了一种新颖的演化编码和演化操作,提高了搜索速度和解的质量.实验结果验证了该方法的可行性.     

量子计算与遗传算法的融合及其在计算机通信网优化中的应用

该文将量子计算与遗传算法进行融合,其核心是在常规遗传算法中将量子的态矢量引入遗传编码,并自适应地进行量子旋转门的调整以实现染色体的演化,使算法具有更好的种群多样性和全局寻优能力。通过求解计算机通信网优化问题的实例,结果表明:新方法比采用常规遗传算法具有明显的高效性。     

基本电子电路

TN7 2004040451用遗传算法实现信号转换电路的非线性校正/温秀兰,宋爱国,崔建伟,(2{高桂本(东南大学)11数据采集与处理一2003,18(3)一306一309采用了遗传算法的最新成果,提出了一种新颖的基于实数编码的改进遗传算法用以校正信号转换电路的非线性误差.该算法采用基于代沟最小的     

基于猴王遗传算法的演化硬件

演化硬件作为新的硬件载体,具有自组织、自适应、自修复的能力。本文设计了一种由查找表(LUT)和D触发器构成的基本演化硬件单元,能够满足组合逻辑电路和时序逻辑电路的设计要求。同时设计了兼容组合逻辑电路和时序逻辑电路的适应度评估函数。利用该模型对基于遗传算法的演化硬件和基于猴王遗传算法的演化硬件参数进行了优化设计。分析表明遗传算法的变异概率 取值应在0~0.01之间,交叉概率对算法的性能影响可以忽略;猴王遗传算法的保留概率 取值应在0~0.85之间,变异概率 应在0~0.01之间。对比分析了遗传算法和猴王遗传算法的性能：基于猴王遗传算法演化硬件的运算量只有基于遗传算法演化硬件的1/4,且能得到更接近目标电路的电路结构。     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first     

JOURNAL OF ELECTRONICS(CHINA)

正~~     

NEXT GENERATION WIRELESS NETWORKS–ESPECIALLY THE USE OF MILLI-MICROWAVE BANDS

The global bandwidth shortage of wireless communications has motivated the exploration of the naillimeter wave （ram-wave） frequency spectrum for the next generation wireless communications. Recent advances in RF CMOS technology and high speed baseband signal processing technologies have enabled tile extensive research and development of turn-wave wireless communications. The multi gigabit per second data rate of ram-wave system will lead to applications in many important scenarios, such as WPAN, WLAN,back-haul for cellular system. And the frequency bands include 28 GHz, 38 GHz, 45GHz, 60GHz, E-BAND and even beyond 100 GHz. The propagation and the imitation of the RF circuits design in these frequency bands make the directional antennas be inevitable for mm-wave communications.