Wireless LAN (WLAN) positioning has received much attention recently and location fingerprinting has been widely accepted as an effect method. In WLAN positioning, the mobile user’s (MU) orientation has a significant impact on the received signal strength from an access point. Many researchers have noticed this impact and considered it when the fingerprint database is generated. In this paper, ...

as wireless networks with high data rate get widely deployed, improving the performance of tcp over these networks plays vital role. wireless link losses have dramatic adverse impact on tcp performance due to the difficulty in distinguishing the congestion losses from wireless link losses. we first, studied the various existing bandwidth estimation algorithms over the wireless networks. in this...

Abstract Due to the heavy workload of RSS collection, instability WLAN signal strength and disappearance signals caused by complex indoor environments, construction radio map for wireless local area network (WLAN) fingerprint-based positioning system is time-consuming laborious. In order rapidly deploy system, bidirectional encoder representation from transformers (BERT) model used fill missing...

Joint Fourier transform correlation is an analog optical signal processing technique capable of comparing several two-dimensional images. We show that selected spectral domain binary thresholds, obtained through simulation, signiicantly improve the performance of an optical implementation of the joint transform correlator. In doing so we establish empirically the existence of well deened optima...

Although WiFi fingerprint-based indoor localization is attractive, its accuracy remains a primary challenge especially in mobile environments. Existing approaches either appeal to physical layer information or rely on extra wireless signals for high accuracy. In this paper, we revisit the RSS fingerprint-based localization scheme and reveal crucial observations that act as the root causes of lo...

Peer-to-peer technology and wireless networking offer great potential for working together away from the desk – but they also introduce unique security challenges. A key aspect of that security is ensuring the identity of a peer user in the network (i.e., authentication) when standard server-based mechanisms are not available. Authentication is meant to foil the eavesdropping intruder who masqu...

This study evaluated an indoor location estimation method using a wireless local area network (LAN). The Fingerprint was used as technique. can estimate the current based on received signal strength indicator and media access control address obtained from LAN points. However, this is greatly affected by changes in radio propagation environment, presence or absence of obstacles reduces accuracy....

In recent years, the use of wireless sensor networks has increased. This is due in part to the increasing miniaturization, decreasing costs and the identification of real-world scenarios where sensors can be deployed. Device-free Passive (DfP) localisation is the identification of a person without the need for any physical devices i.e. tags or sensors. A DfP Localisation system uses the Receive...

in our country, student transportations’ security and driving accidents statistics for students is one of the major concerns for relevant organizations such as educational organization. in current year, a system, was named sepand, was formed in city taxi driver :::::::union::::::: by educational organization, naja traffic and city taxi driver :::::::union:::::::. in this systems’ plan, basis on...