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Randomized Stream Ciphers with Enhanced Security Based on Nonlinear Random Coding
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作者 Anton Alekseychulk Sergey Gryshakov 《Journal of Mathematics and System Science》 2015年第12期516-522,共7页
关键词 随机编码 非线性 流密码 安全性 安全框架 布尔方程组 密码设计 哈希函数
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Multimedia Streaming for Ad Hoc Wireless Mesh Networks Using Network Coding
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作者 Basil Saeed Chung-Horng Lung +1 位作者 Thomas Kunz Anand Srinivasan 《International Journal of Communications, Network and System Sciences》 2013年第5期204-220,共17页
Over the past years, we have witnessed an explosive growth in the use of multimedia applications such as audio and video streaming with mobile and static devices. Multimedia streaming applications need new approaches ... Over the past years, we have witnessed an explosive growth in the use of multimedia applications such as audio and video streaming with mobile and static devices. Multimedia streaming applications need new approaches to multimedia transmissions to meet the growing volume demand and quality expectations of multimedia traffic. This paper studies network coding which is a promising paradigm that has the potential to improve the performance of networks for multimedia streaming applications in terms of packet delivery ratio (PDR), latency and jitter. This paper examines several network coding protocols for ad hoc wireless mesh networks and compares their performance on multimedia streaming applications with optimized broadcast protocols, e.g., BCast, Simplified Multicast Forwarding (SMF), and Partial Dominant Pruning (PDP). The results show that the performance increases significantly with the Random Linear Network Coding (RLNC) scheme. 展开更多
关键词 Wireless Broadcast Multimedia streamING Audio streamING Video streamING NETWORK CODING random Linear NETWORK CODING PDP SMF BCast
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基于非线性动力学系统噪声减缩盲解调负信噪比载频上的随机码流
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作者 王超 黄伟 黄显高 《计算机系统应用》 2016年第10期27-38,共12页
盲解调技术是获取非协作数字通信信号上携带有用信息的最关键技术之一.首先对现有数字通信信号盲解调进行了综述,然后在我们已发表论文的基础上,进一步完善非线性动力学系统噪声减缩的理论和算法,对负信噪比BPSK调制载频上的随机码流进... 盲解调技术是获取非协作数字通信信号上携带有用信息的最关键技术之一.首先对现有数字通信信号盲解调进行了综述,然后在我们已发表论文的基础上,进一步完善非线性动力学系统噪声减缩的理论和算法,对负信噪比BPSK调制载频上的随机码流进行盲解调.试测试结果表明,信噪比在Eb/N0>7d B区间,噪声减缩的盲解调的误码率为0,信噪比在0<Eb/N0<7d B区间,噪声减缩的盲解调的误码曲线低于现有非相干解调方法的误码曲线.噪声减缩的盲解调的误码率接近或重合或低于现有相干解调的理论误码曲线.可见,采用非线性动力学系统的噪声减缩的盲解调与现有非相干解调的处理能力比较,至少提高了7d B的处理能力.测试结果表明研究成果为电子侦察信号处理的盲解调提供了一种有效的方法. 展开更多
关键词 BPSK调制 噪声减缩 盲解调 随机码流 误码率
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