| 1. |
- Grebien, Stefan, et al.
(author)
-
Localization and tracking
- 2021
-
In: Inclusive Radio Communications for 5G and Beyond. - 9780128205815 ; , s. 253-293
-
Book chapter (other academic/artistic)abstract
- The use of radio signal for position tracking (positioning) and navigation has a long tradition. Most notably, global navigation satellite systems (GNSS) are now widely applied for civilian applications, ranging all the way from tracking of cargo containers to gaming. However, GNSS suffers from limited coverage in dense urban areas and indoors and also from a limited position accuracy, which rules out most location-based applications that are concerned with the (natural) interaction of humans with their immediate surroundings, the physical environment in which we live, work, and spend our free time.This chapter highlights the expected benefits of the new wireless technologies proposed for the fifth generation (5G) of mobile communication systems and for the Internet of Things (IoT) for the purpose of improved radiopositioning. It starts with a summary of the most promising future application scenarios for high-accuracy positioning, followed by a discussion on the technical challenges arising from those applications, and on the expected features and limitations of 5G and IoT wireless systems with respect to positioning. These initial considerations are followed by four technical sections, focusing on measurement acquisition and modeling, position estimation, multipath-assisted positioning, and system-level studies. Finally, a range of experimental facilities are described, which have been used to validate the theoretical contributions.
|
|
| 2. |
- Haneda, Katsuyuki, et al.
(author)
-
Radio propagation modeling methods and tools
- 2021
-
In: Inclusive Radio Communications for 5G and Beyond. - 9780128205815 ; , s. 7-48
-
Book chapter (peer-reviewed)abstract
- This chapter provides overview of fundamental definitions, tools and new methods towards improved channel modeling reported in the Co-operation in Science and Technology (COST)-Inclusive Radio Communications (IRACON) Action for future wireless communications and networks. The overview first covers definitions of propagation environments as they determine most relevant propagation mechanisms to consider and model, and furthermore, guide approach to channel modeling methods. This chapter then introduces new insights into popular approaches of channel modeling, i.e., site-specific and geometry-based stochastic channel modeling, where the latter particularly features canonical and standardized channel modeling approaches taken by the 3rd Generation Partnership Project (3GPP), COST, and International Telecommunication Union (ITU) communities. Finally, this chapter shed lights on new modeling approaches to small-scale radio propagation behaviors, covering plane wave propagation paths and distributed diffuse scattering.
|
|
