Density Adaptive Sleep Scheduling in Wireless Sensor Networks

Broadcasting by flooding is one of the most fundamental services for both wired and wireless networks. This also includes several sensor network applications that use broadcasting to spread information from one sensor node to the other sensor nodes in the entire sensor network. These wireless sensor networks have certain characteristics such as...

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,...

Caregiving Time Registration System

Registration of working hours in home care can be very labor-intensive when paper declaration forms are filled in by hand. Currently, these forms also have to be entered in a computer system by hand. To maximize time spent on care giving, the time required for these registrations has to be minimal. To accomplish this, an Android application has...

Cooperative Spectrum Sensing Algorithms in WBAN

Wireless Body Area Network (WBAN) is used for communication among sensor nodes operating on, in or around the human body in order to monitor vital body parameters and movements. A typical sensor node in WBAN should ensure accurate sensing of the signal from the body, carry out low-level processing of the sensor signal, and wirelessly transmit...

Cooperative Networks: The Mobile Tethering Game

The thesis aims at extending the capabilities of devices and enabling cooperation, i.e., data connection sharing, among users who may or may not necessarily be related to or know each other. To achieve this objective as well as to validate the results of our theoretical analysis, we developed a smart-phone application for data connection sharing...

Green Routing Protocols Employing Dual-Radio Cooperation

This thesis introduces the wake-up radio into ZigBee technology and presents three routing protocols for this dual-radio cooperative transmission.

Energy Conservation of Cooperative Communication over Composite Channels

The studies about the effects of multipath fading and shadowing for wireless cooperative networks are insufficient. Almost all real wireless networks can be modeled by changing the parameters of the composite distribution which models both multipath and shadow fading. This composite distribution makes the analytical calculation of bit error rate...

Information Dissemination in Vehicular Networks

Future home networks: Connectivity in 60 GHz Home Networks

Currently, common frequency spectrum is densely allocated and this leads to search for alternative frequency bands. 60 GHz band attracts attention for its potential in future communication. It offers globally available, license-free, very large bandwidth for high data rate communication. At 60 GHz frequency band, severe attenuation of the...