Statistical Modeling of Intelligent Transportation Systems Communication Channels

Intelligent Transportation Systems (ITS) is becoming an important paradigm, because of its ability to enhance safety and to mitigate congestion on road traffic scenarios. Realizing the fact that data collection scheme from in-situ test beds for large number of vehicles is always expensive and time consuming, before being employed in large scale,...

Spectrum Sharing among Cellular Operators from a Game Theoretical Cognitive and Cooperative Networking Perspective

The demand for wireless services and the need for high data-rates are growing rapidly. Future generation networks are expected to provide high data-rates in the order of 1Gbps in local area and 100Mbps in wide area. It is a challenge for operators to meet this rising demand for high data-rates as the radio-spectrum is an expensive and scarce...

Performance and fairness enhancement in ZigBee networks

ZigBee is a robust wireless communication standard which is based on physical and MAC layer on IEEE 802.15.4. ZigBee is also critically limited by the low data rate standard when there are many source nodes in the network. How to fairly and efficiently access the network and delivery the packets should be considered as one of the crucial issues....

Event-driven MAC Protocol For Dual-Radio Cooperation

Dual-radio cooperation uses a low-power wake up radio to minimize the energy consumption of the wireless node in low event rates, and switches to single-radio working method in event rates more than the critical event rate. Critical event rate is defined as the rate above which dual-radio node consumes more energy than the single-radio model or...

Allocation of Opportunistic Spectrum for Cognitive Radio Ad hoc Networks

Cognitive Radios (CRs) address the problems of spectrum scarcity and under-utilization of the spectrum. However, realizing a CR network is neither easy nor straight-forward. The link layer in CR Ad hoc Networks is responsible for allocating suitable channels, out of the currently available channels. It is also responsible for setting up...