Novel Mechanisms for Location-Tracking Systems

摘要: The need of location information is rapidly emerging in many wireless application scenarios Hightower & Borriello (2001); Poslad (2009); Vossiek et al. (2003). For instance, home and office environments, location-based services are developed to improve the efficiency working environment, localize printers, mobile-phones, people, etc. In warehouse, industrial hospital scenarios, can be used track assets persons. military rescuing applications, positioning technologies utilized for real-time monitoring soldiers troop, machines cars Destino Abreu (2009a); (2007). Location-information, however, also as a requirement next generation communication technologies. mobile networks, 23rd September 2010, Federal Communications Commission (FCC) unanimously approved new rules use unlicensed TV white space spectrum. It was stated that devices will able access spectrum if they determine their locations identify unused channels at location. Yet another area where play major role Internet-of-things (IoT) Scott Benlamri (2010). this case, context location-awareness fundamental development smart allow “Things” (computer, objects, sensors, actuators, etc.) autonomous energy-efficient. Motivated from all above, lot researches devoted accurate based on satellite radios like Global Positioning System (GPS), or shortand medium-range radio such Wi-Fi, Bluetooth Ultra-wide band (UWB). particular, UWB technology has seen strong surge interests because its high ranging capabilities energy Dardari (2008.); Gezici (2005); Yihong (2004). This chapter intended survey current state-of-the-art localization techniques large-scale single-hop latter dedicated section Non-Line-of-Sight (NLOS) mitigation mechanisms. Finally, considering low-data-rate impulse (LDR-IR) model Denis (2007), performance described algorithms shown Line-of-Sight (LOS) mixed LOS/NLOS channel conditions both multi-hop network topologies. 20