基于Agent的网络安全系统设计与实现

随着现代信息技术和计算机技术的发展,网络安全成为人们关心的话题。本文采用多Agent智能体系技术,将每个网络安全防范体系设置到每一个合法的用户终端上面,而现在的网络安全大都集中在防火墙技术等,因此,本文提出采用Agent安全审计模块实现对系统的安全保障。     

基于Agent的网络安全系统设计与实现

随着现代信息技术和计算机技术的发展,网络安全成为人们关心的话题。本文采用多Agent智能体系技术,将每个网络安全防范体系设置到每一个合法的用户终端上面,而现在的网络安全大都集中在防火墙技术等,因此,本文提出采用Agent安全审计模块实现对系统的安全保障。     

Joint power allocation and multi-relay selection scheme based on system outage probability

An amplify-and-forward （AF） based multi-relay network is studied. In order to minimize the system outage probability with a required transmission rate, a joint power allocation （PA） and multi-relay selection scheme is proposed under both total and individual power constraints （TIPC）. In the proposed scheme, the idea of ordering is adopted to avoid exhaustive search without losing much system performance. Besides the channel quantity, the ordering algorithm proposed in this article also takes relays＇ maximal output ability into consideration, which is usually ignored in traditional relay ordering algorithms. In addition, simple power reallocation method is provided to avoid repetitive PA operation during the process of searching all possible relay subsets. By Adopting the idea of ordering and using the proposed power reallocation method lead to remarkable decrease of the computation complexity, making the scheme easier and more feasible to implement in practical communication scenarios. Simulations show that the proposed multi-relay selection scheme provides similar performance compared to the optimal scheme with optimal PA and exhaustive search （OPAES） but with much lower complexity.