In the next generation of wireless communication systems, there will be a need for the rapid
deployment of independent mobile users. Significant examples include establishing survivable, efficient,
dynamic communication for emergency operations, disaster relief efforts, and military networks. Such
network scenarios cannot rely on centralized and organized connectivity, and can be conceived as
applications of mobile ad hoc networks. A MANET is an autonomous collection of mobile users that
communicate over relatively bandwidth constrained wireless links. Since the nodes are decentralized, where
all network activity including discovering the
在充分研究了超寬帶無線傳輸技術(shù)特性的基礎(chǔ)上, 對超寬帶無線定位的原理進(jìn)行了探討。首先詳細(xì)介紹了超寬帶測距和定位的原理, 對超寬帶定位的精度進(jìn)行了仿真分析。然后, 針對超寬帶 Ad Hoc 網(wǎng)絡(luò)實(shí)際應(yīng)用中節(jié)點(diǎn)數(shù)目比較多的情況, 引入了節(jié)點(diǎn)的相關(guān)性來提高超寬帶的定位精度, 并進(jìn)行了仿真分析。仿真結(jié)果顯示了此算法在網(wǎng)絡(luò)節(jié)點(diǎn)數(shù)比較多的情況下對定位精度有比較好的提高效果。
Communication between various devices makes it possible to pro-
vide unique and innovative services. Although this interdevice com-
munication is a very powerful mechanism, it is also a complex and
clumsy mechanism, leading to a lot of complexity in present day
systems. This not only makes networking difficult but also limits
its flexibility.
Coverage of routing techniques in various wired and wireless networks is the unique
proposition of this book. Routing protocols and algorithms are the brains of any network.
The selection of topics in this book is clear: we attempt to explain routing in its entirety,
starting from fundamental concepts, then moving through routing on the Internet, and
finally cutting across the recent‐day cellular, ad hoc, and wireless networks.
A mobile ad-hoc network (MANET) is formed by multiple moving nodes
equipped with wireless transceivers. The mobile nodes communicate with
each other through multi-hop wireless links, where every node can transmit
and receive information. Mobile ad-hoc networks have become increasingly
important in areas where deployment of communications infrastructure is
difficult.
Today wireless is becoming the leader in communication choices among
users. It is not anymore a backup solution for nomadic travellers but really a
newmoodnaturallyusedeverywhereevenwhenthewiredcommunicationsare
possible. Many technologies evolve then continuously, changing the telecom-
munication world. We talk about wireless local area networks (WLANs), wire-
less personal area networks (WPANs), wireless metropolitan area networks
(WMANs), wireless wide area networks (WWANs), mobile ad hoc networks
(MANETs), wireless sensor networks (WSNs) and mesh networks. Since we
can find today a multitude of wireless technologies we decided to group a
numberofcomplementarytechnologiesintoonedocumenttomakeiteasierfor
areadertounderstandsomeofthetechnicaldetailsofeachmedia.
