The positioning of sensors in Wireless Sensor Network WSN affects coverage, communication cost and resource management.In non-deterministic deployment, mobility feature of the mobile ad-hoc network can be best exploited to reposition the sensors so as to achieve the best network coverage. The Uncovered Region Exploration Algorithm (UREA) is one such algorithm proposed in [1] for redeployment of...

Cellular operators are developing low-cost relays to improve the coverage and capacity of next generation cellular networks. Deploying low cost relays reduces the infrastructure cost of setting up new base stations in order to support the rapidly growing number of subscribers. In this thesis, we present methods to design the system architecture and efficient protocols to achieve maximum benefit...

BACKGROUND The available data on routine immunization in Nigeria show a disparity in coverage between Northern and Southern Nigeria, with the former performing worse. The effect of socio-cultural differences on health-seeking behaviour has been identified in the literature as the main cause of the disparity. Our study analyses the role of supply-side determinants, particularly access to service...

The two ordered phases p(2 X 2) at a coverage 6’ = 0.25 and ifi X fi)R30” at 6 = 0.33 of potassium adsorbed on Ru(O~l) were analyzed by use of low-energy electron-diffraction (LEED). In the (A x fiJR30” phase, the K atoms occupy threefold hcp sites, while in the p(2 x 2) phase the fee site is favoured. In both phases, the K hard-sphere radii are nearly the same and close to the covalent Pauling...

The approval of the new mobile WiMAX helps in realizing the real time wireless broadband networks with large coverage area and high data rate. In mobile WiMAX whenever a subscriber comes into the cell radius of base station (BS), it has to get synchronized; this process in mobile WiMAX is termed as initial ranging. This paper proposes a novel Multiuser Detection for uplink mobile WiMAX with bet...

Sanitation access can provide positive externalities; for example, safe disposal of feces by one household prevents disease transmission to households nearby. However, little empirical evidence exists to characterize the potential health benefits from sanitation externalities. This study investigated the effect of community sanitation coverage versus individual household sanitation access on ch...

Topology control in next generation wireless networks has recently attracted the interest of several researchers. Network performance is significantly affected by topology. Therefore, creating an optimal topology essential. especially fifth-generation (5G) networks, where latency, throughput, energy efficiency, and other metrics are highly stringent. In this study, we investigated algorithms 5G...