Single Antenna Systems using Cooperative Communications
Cooperative communication between nodes S and D using relay node R Spatial diversity is traditionally exploited by using multiple transceiver antennas to effectively cope with fading in wireless channels. However,…
Cross-layer optimization
Cross-layer optimization is an escape from the pure waterfall-like concept of the OSI communications model with virtually strict boundaries between layers. The cross layer approach transports feedback dynamically via the layer boundaries to enable the…
Design Issues – Mobile ADHOC Networks
DESIGN ISSUES · The wireless link characteristics are time-varying in nature: There are transmission impediments like fading, path loss, blockage and interference that adds to the susceptible behaviour of wireless channels.…
MANET vs VANET
MANET is the short form of Mobile AdHoc Network. In ad-hoc networks all the nodes are mobile in nature and hence they can be interfaced dynamically in arbitrary fashion. As we know…
Attacks against ad hoc networks
While a wireless network is more versatile than a wired one, it is also more vulnerable to attacks. This is due to the very nature of radio transmissions, which are…
Security Issues with Mobile Ad-Hoc Networks
What is a Mobile Ad-hoc Network (MANET)? When we think about computer networks the idea of structured planned and properly segmented arrangement of computer devices comes to mind. The word…
Transmission Control Protocol
The transmission Control Protocol (TCP) is one of the most important protocols of Internet Protocols suite. It is most widely used protocol for data transmission in communication network such as…
Transport Layer
Next Layer in OSI Model is recognized as Transport Layer (Layer-4). All modules and procedures pertaining to transportation of data or data stream are categorized into this layer. As all…
ROUTING PROTOCOLS
i.Destination Sequenced Distance Vector Routing (DSDV) Destination sequenced distance vector routing (DSDV) is adapted from the conventional Routing Information Protocol (RIP) to ad hoc networks routing. It adds a new…
Hierarchical Routing
In the previous section, we viewed "the network" simply as a collection of interconnected routers. One router was indistinguishable from another in the sense that all routers executed the same…
