Since the IEEE wireless protocol was released about ten years ago, Wi-Fi technical standards have been well developed and widely used due to high speed, wireless connectivity and wide coverage of Wi-Fi technology. Mobile users' demand for real-time location information is unprecedented today. For outdoor environments, using GPS can achieve high-precision positioning results. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay However, in indoor environments, due to attenuation or obstruction of GPS signals, GPS technology cannot be used effectively. Therefore, Wi-Fi-based positioning technology has been researched and developed for indoor environments. In this thesis, the enormous market potential and rapid development of smartphone technologies were briefly assessed. It is concluded that the integration of smartphones and Wi-Fi for indoor positioning is a dominant direction in industry research and commercialization. The main challenges for the indoor environment are discussed with the conclusion that the RSS-based fingerprint technique is the optimal solution and that smartphones are the most suitable mobile device due to its wide use. Commonly used fingerprint estimation methods and algorithms are reviewed. We have successfully implemented a Wi-Fi-based indoor positioning system using a smartphone and fingerprint-based positioning method. Numerous case studies were designed and field experiments were conducted using various mobile platforms (i.e., smartphones, iPads, and laptops), and the development and requirements of the hardware and software systems were described. The statistical result of the positioning errors (the maximum and minimum errors were 4.79 m and 0.58 m respectively) in the specific indoor environment. This is compared to the results of our 2m test system, which is, more precisely, the spatial resolution of the best matching algorithm. The performance of both systems was affected by the quality of the RSS observations collected by a smartphone. Current smartphones have limitations on the quality of Wi-Fi adapters. It is expected that better quality and appropriately sized Wi-Fi adapters will be available on smartphones in the future. The spatial resolution of the proposed indoor positioning system can be further improved by configuring a more complex indoor environment and increasing the number of APs or combining other types of sensors in the smartphone. Please note: this is just an example. Get a custom article template now from our expert writers. Get a Custom Essay Several aspects can be further explored to improve the performance of the proposed Wi-Fi based positioning system for future work. Three main aspects are listed as follows: RSS database setup for Wi-Fi adapters of different brands: The proposed indoor positioning system depends on the device, so it is necessary to test Wi-Fi adapters of different brands with different reception capabilities. The fingerprinting process must be performed for each type of Wi-Fi adapter. Further research needs to be conducted to investigate new methods to reduce the impact of device-dependent errors. High stability is expected for other mobile devices rather than Samsung smartphones. Multi-sensor fusion: Most current smartphones are equipped with other types of sensors such as accelerometer, gyroscope and compass.