Non-orthogonal multiple access (NOMA), an emerging technology to improve system capacity and spectrum efficiency, has attracted significant attention. In this study, the authors propose a NOMA-based downlink cooperative cellular system, where the base station communicates with two paired mobile users simultaneously through the help of a half-duplex amplify-and-forward relay. The outage performance of the system is investigated and closed-form expressions for their respective exact and asymptotic outage scheme are derived. Furthermore, they study the ergodic sum rate of the two paired users and the upper bound of the ergodic sum rate is obtained. By comparing the NOMA with conventional multiple access (MA) via numerical simulations, they have shown that NOMA can obtain the same diversity order with conventional MA, and achieve nearly the same sum rate with conventional MA. Furthermore, NOMA can offer better spectral efficiency and user fairness since more users are served at the same time, frequency, and spreading code.
2022-03-04 12:22:57 4KB NOM Downlin cooperativ
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经典C++进阶书籍 Efficient C++ Performance Programming Techniques
2022-03-03 16:51:25 1000KB Efficient C++ Performance Programming
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Understanding Learning Rates and How It Improves Performance in Deep Learning This post is an attempt to document my understanding on the following topic: What is the learning rate? What is it’s signibcance? How does one systematically arrive at a good learning rate? Why do we change the learning rate during training? How do we deal with learning rates when using pretrained model?
2022-03-03 16:18:37 1.29MB 深度学习 deep learnin
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软件介绍: 安装在X64位WIN7/8.X/10系统上的Ixia Performance Endpoint 9.5,使用32位系统的不要下载。应该是当前最新版本了。
2022-02-28 15:31:05 6.02MB 其他资源
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高清彩版 Oracle SQL Performance Tuning and Optimization: It's all about the Cardinalities
2022-02-26 17:59:44 4.18MB oracle
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Opengl Build High Performance Graphics 英文无水印pdf pdf所有页面使用FoxitReader和PDF-XChangeViewer测试都可以打开 本资源转载自网络,如有侵权,请联系上传者或csdn删除 本资源转载自网络,如有侵权,请联系上传者或csdn删除
2022-02-22 16:30:41 14.56MB Opengl Build High Performance
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spark-tpc-ds-performance-test:使用TPC-DS基准测试Spark SQL性能
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我的性能测试经验分享 闲扯: 性能测试门槛较高,选择前还是要谨慎,那么看下一名合格的性能测试工程师要求: 硬件大概信息,当硬件出现性能瓶颈后,提出可供替代硬件方案信息建议 系统框架的优劣势,以及框架下各模块的合理配置优化建议 上面这条好高大上,要完成这样任务的门槛也不低,我们来看下: 编程语言:Java,C,C#,C++,PHP,你不知道以后的工作他们哪个会出现在你的视线中..... Java,php占比较高,目前的主流互联网公司都在用Java,创业公司PHP会多一些 C,C#,C++,如果你不是去做银行的外包项目或者游戏公司,这部分一般用不到滴。 服务端: Tomcat,Apache,IIS,Nginx,Mybatis,servlet,这些可不是要求你拼写单词哦~ 数据端:Oracle,Mysql,Sqlserver,Postgresql,Mongodb,Redis,Mercache 好
2022-02-18 17:09:37 1.92MB
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安全协处理器通过提供安全岛来实现安全的分布式应用程序,应用程序可以在其中执行和记录状态,不受攻击者的直接物理访问的观察和干扰。但是,为了使这些协处理器有效工作,此类应用程序的参与者必须能够验证他们正在与真实、未篡改的设备上的真实程序进行交互。此外,支持通用计算并将作为商业产品制造和分发的安全协处理器必须提供这些核心保护区和身份验证特性,同时还要应对许多其他挑战,包括: Ø 应用程序、操作系统、底层安全管理都可能来自不同的、相互怀疑的参与者; Ø 配置和维护必须在恶劣的环境中进行,同时尽量减少对操作的干扰; Ø 设备必须能够从复杂软件中不可避免出现的漏洞中恢复; Ø 物理安全性规定设备本身永远不能被打开和检查; Ø 不断发展的加密要求要求硬件加速器由可重新加载的卡上软件支持 本文总结了我们为解决这些问题而开发的硬件、软件和密码体系结构。
2022-02-15 18:00:24 487KB 安全协处理器 硬件安全模块 HSM
Oracle Database 12c Release 2 Performance Tuning Tips and Techniques 英文azw3 本资源转载自网络,如有侵权,请联系上传者或csdn删除 本资源转载自网络,如有侵权,请联系上传者或csdn删除
2022-02-14 23:14:55 168.56MB Oracle Database 12c Release
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