无线传感器有几个缺点,如发射距离短,计算处理能力差,以及发射功率低等。该文以协作信号处理概念为理论基础,讨论设计高效传感器网络。设想有一个由多个传感器节点组成的网络,每个节点与一个处理器对应。通过采用一种适当的协作运算法...无线传感器有几个缺点,如发射距离短,计算处理能力差,以及发射功率低等。该文以协作信号处理概念为理论基础,讨论设计高效传感器网络。设想有一个由多个传感器节点组成的网络,每个节点与一个处理器对应。通过采用一种适当的协作运算法则和通信设计,把传感器当作分布式数字信号处理器(DDSP,Distributed Digital Signal Processor)使用,将DDSP用于快速傅里叶变换,使无线传感器网络性能得到提高。展开更多
在分析基于链路选择函数的服务质量(Quality of Service,QoS)约束组播路由算法的基础上,总结了在构建组播树过程中目的地开销和网络开销的变化规律.并且根据实际应用要求,从综合优化网络开销和目的地开销的角度出发,提出了一种新的链路...在分析基于链路选择函数的服务质量(Quality of Service,QoS)约束组播路由算法的基础上,总结了在构建组播树过程中目的地开销和网络开销的变化规律.并且根据实际应用要求,从综合优化网络开销和目的地开销的角度出发,提出了一种新的链路选择函数及相关组播路由算法,该算法不仅提出了新的链路选择标准,并且改进了节点的搜索过程,综合优化了网络开销和目的地开销.由算法的仿真分析得出,该算法在组播树的总代价和平均延迟上优于DDSP(Destination-Driven Shortest Path)算法,取得了良好的网络性能.展开更多
The concept of the binary sequence pair is generalized from a single binary sequence. Binary sequence pairs are applied in many fields of radar, sonar or communication systems, in which signals with optimal periodic c...The concept of the binary sequence pair is generalized from a single binary sequence. Binary sequence pairs are applied in many fields of radar, sonar or communication systems, in which signals with optimal periodic correlation are required. Several types of almost perfect binary sequence pairs of length T = 2q are constructed, where q is an odd number. These almost perfect binary sequence pairs are based on binary ideal sequence or binary ideal two-level correlation sequence pairs by using Chinese remainder theorem. For these almost perfect binary sequence pairs with good balanced property, their corresponding divisible difference set pairs(DDSPs) are also derived.展开更多
文摘无线传感器有几个缺点,如发射距离短,计算处理能力差,以及发射功率低等。该文以协作信号处理概念为理论基础,讨论设计高效传感器网络。设想有一个由多个传感器节点组成的网络,每个节点与一个处理器对应。通过采用一种适当的协作运算法则和通信设计,把传感器当作分布式数字信号处理器(DDSP,Distributed Digital Signal Processor)使用,将DDSP用于快速傅里叶变换,使无线传感器网络性能得到提高。
文摘在分析基于链路选择函数的服务质量(Quality of Service,QoS)约束组播路由算法的基础上,总结了在构建组播树过程中目的地开销和网络开销的变化规律.并且根据实际应用要求,从综合优化网络开销和目的地开销的角度出发,提出了一种新的链路选择函数及相关组播路由算法,该算法不仅提出了新的链路选择标准,并且改进了节点的搜索过程,综合优化了网络开销和目的地开销.由算法的仿真分析得出,该算法在组播树的总代价和平均延迟上优于DDSP(Destination-Driven Shortest Path)算法,取得了良好的网络性能.
基金supported by the National Natural Science Foundation of China(6160140161501395+6 种基金6160139961671402)Natural Science Foundation of Hebei Province(F2015203150F2016203293F2016203312)Natural Science Research Programs of Hebei Educational Committee(QN2016120)the Independent Research Programs for Young Teachers of Yanshan University(15LGB013)
文摘The concept of the binary sequence pair is generalized from a single binary sequence. Binary sequence pairs are applied in many fields of radar, sonar or communication systems, in which signals with optimal periodic correlation are required. Several types of almost perfect binary sequence pairs of length T = 2q are constructed, where q is an odd number. These almost perfect binary sequence pairs are based on binary ideal sequence or binary ideal two-level correlation sequence pairs by using Chinese remainder theorem. For these almost perfect binary sequence pairs with good balanced property, their corresponding divisible difference set pairs(DDSPs) are also derived.
