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1.
Wireless Personal Communications - Opportunistic network coding (ONC) increases communication networks’ throughput by XORing two or more packets together. However, it has shown that ONC...  相似文献   

2.
Wireless Personal Communications - This paper proposed a novel algorithm called Efficiency Network Coding (ENC) for wireless mesh networks. The ENC algorithm is based on COPE protocol and consists...  相似文献   

3.
Wireless Personal Communications - Although Peer-to-Peer live video streaming over wireless mesh networks (WMNs) is considered a promising technology, some important challenges such as...  相似文献   

4.
电磁纳米网是采用纳米电磁通信方式的无线纳米传感器网络,由大量可相互通信的纳米传感器构成。由于纳米传感器可存储的能量极为有限,能量有效性成为电磁纳米网中必须优先考虑的重要问题。在对采用太赫兹通信的无线纳米传感器网络进行概述的基础上,综述电磁纳米网通信能量相关的开关键控调制方法和节能低码重信道编码的研究现状,探讨电磁纳米网节能编码需要进一步研究的方向。目前,尚鲜见无线纳米传感器网络的中文文献,期望本文能促进国内对无线纳米传感器网络的关注和研究。  相似文献   

5.
Wireless Networks - Wireless sensor networks include a large number of sensor nodes which are developed in an environment. These networks have military, commercial, industrial, and medical...  相似文献   

6.
Wireless Personal Communications - Wireless sensor networks (WSNs) are the networks which mainly focuses on the applications and are composed of considerable sensor nodes. The use of energy in a...  相似文献   

7.
Wireless Personal Communications - Wireless sensor networks (WSN) are ad-hoc networks with nodes distributed over large areas which forward data to sink nodes. Nodes in the WSN get depleted of...  相似文献   

8.
龙镜如  黄先莉  陈绪君 《通信技术》2011,44(1):126-128,131
无线网络编码是一项能极大提高无线网络流量的有用技术,而协作分集可以有效地克服无线衰落的影响。研究了Nakagami-m信道下协作网络编码系统中断性能,分析了不同协作策略下的互信息表达式,推导了协作网络编码中断概率闭式表达式,并对分析的结果进行了仿真。仿真结果显示,在高SNR和谱效率R〈4条件下,协作网络编码中断概率较分布式空时编码性能SNR增益有接近2 dB的提高,并且随分布参数m值的增大,协作网络编码中断概率性能逐步改善。  相似文献   

9.
Wireless Personal Communications - Wireless body area networks (WBANs) are communication networks of sensors (and/or actuators), which can be placed on, inside, or around the body and represent a...  相似文献   

10.
Wireless Networks - Wireless sensor networks (WSNs) is used for the internet of things, and Pervasive/Ubiquitous computing. These networks consist of intelligent nodes which sense data and forward...  相似文献   

11.
刘京曦 《无线电工程》2012,42(1):1-3,16
Mesh网络沿用了Ad Hoc网络中的路由协议,但Mesh网络节点移动性高,路径的生存周期短,根据无线Mesh网络自身的动态特点进行路由协议的优化成为了研究的热点。COPE编码方案是针对Mesh网络中的单播特性提出的一种新的机会网络编码机制,能够提高网络的吞吐量。通过NS2仿真平台对AODV路由协议添加COPE网络编码方案,仿真结果表明在不同网络条件下,AODV和COPE的结合增加了无线节点的编码机会,使网络的吞吐量得到了有效的提高。  相似文献   

12.
Wireless Personal Communications - Wireless sensor networks (WSNs) refer to countless and numerous sets of low-energy wireless nodes which are used for observing and supervising activities and...  相似文献   

13.
Wireless sensor networks (WSNs) are composed of sensor nodes generally powered by batteries, for which recharging or replacement is difficult. Since battery technology has not progressed as rapidly as semiconductor technology, energy efficiency has become increasingly important in WSN. On the other hand, data exchanged between nodes are vulnerable to corruption by errors induced by random noise, signal fading and other factors. Therefore, improving link reliability and reducing energy consumption are prime concerns in the design of wireless sensor networks. In this context, performing optimal modulation schemes with suitable channel coding process is a crucial task at the physical layer of this class of networks. This paper investigates the best modulation strategy to minimize the total energy consumption required to send a given number of bits. Energy consumption with both uncoded and coded modulation techniques including M-ary QAM (MQAM), M-ary PSK (MPSK), M-ary FSK (MFSK) and MSK is analytically analyzed and simulated over transmission time, modulation rate and transmission distance. A comparative analysis in terms of energy consumption and probability of Bit Error Rate (BER) referring to MSK modulation with proper Error Control Codes (ECC) approach is presented in this paper. We show that the gain achieved with coded MSK scheme is very promising for obtaining optimal energy network consumption.  相似文献   

14.
Lee  Junyeop  Kim  Sun-Kyum  Yoon  Ji-Hyeun  Yang  Sung-Bong 《Wireless Networks》2015,21(6):2055-2068
Wireless Networks - We study a forwarding strategy in opportunistic networks which are one of the most challenging networks among mobile ad-hoc networks. In opportunistic networks, a node does not...  相似文献   

15.
Wireless Personal Communications - Wireless sensor networks are fundamental blocks of Internet of Things (IoT) which sense a physical phenomenon and aggregates the sensed data. Numerous IoT...  相似文献   

16.
Wireless Personal Communications - Wireless sensor networks (WSN) have been widely used in urban network system and networked monitoring system, which provide easy connectivity and high physical...  相似文献   

17.
Augustine  Susan  Ananth  J. P. 《Wireless Networks》2020,26(7):5113-5132
Wireless Networks - Wireless sensor networks depend on the effective functioning of the nodes in the network, which is concerned regarding the energy that is essential for the extended network...  相似文献   

18.
Liu  Qilie  Wang  Yanyu  Zhuge  Liqiang  Cao  Bin  Xue  Hongmei 《Wireless Networks》2019,25(5):2817-2829
Wireless Networks - Wireless network virtualization (WNV) has been a hot topic recently, which can provide the customized service to construct virtual networks for various requirements quickly and...  相似文献   

19.
Wireless Personal Communications - Wireless sensor networks consist of many tiny sensor nodes which are deployed in various geographical locations for sensing the normal spectacles and also to...  相似文献   

20.
Wireless Networks - Wireless sensor networks consist of a large number of sensor nodes with limited energy, which is widely used in various Internet of things scenarios in recent years. Regarding...  相似文献   

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