Enabling the positioning of cellular handsets increases the safety level and at the same time opens exciting commercial opportunities for operators through providing location-based services. A major implementation obstacle, which prevents a wide deployment of cellular location techniques is the requirement of modifications of the existing network infrastructures and a need for the replacement o...

different models with various approaches to strategic positioning have been employed to define it in various industries. as one of the powerful models, bsc analyses all aspect of organization evenly. in this study bsc is used as an instrument to make shiraz university more efficient in implementing strategic and performance or supporting their strategic plan. therefore this study aims to design...

The performance of Ultra-Wideband (UWB) indoor positioning systems based on Time of Arrival (TOA) techniques is generally affected by the density of reference points (RPs), as well as undetected direct path (UDP) conditions. For a fixed number of reference points (RPs), the performance of some indoor positioning algorithms tends to degrade as the size of the area is increased, i.e. the RP densi...

The waveform influences on the performance of positioning system based on IR-UWB, but the performance of positioning system under the condition of different waveforms has not studied enough. In this paper, the positioning performance of a hybrid TOA/AOA scheme is evaluated with various waveforms over various IEEE 802. 15. 4a channel models (CMs). Simulation results show that the MHP pulse outpe...

Recently, there has been an enormous growth of interests in geolocation applications that demand an accurate estimation of the user’s location in indoor areas. The traditional geolocation system, GPS, which was designed for being used in outdoor environments, does not perform well in indoor areas, causing frequent inaccuracies in location estimation. Therefore the need for more accurate positio...