scholarly journals ANTENNAS OF MOBILE TERMINALS IN MODERN MOBILE COMMUNICATION NETWORKS (OVERVIEW)

2019 ◽  
Author(s):  
Valentin Popov ◽  
Vladimir Skudnov ◽  
Alexey Vasilyev
Keyword(s):  
Mobile Communication ◽  
Antenna Arrays ◽  
Communication Systems ◽  
Mobile Station ◽  
Line Of Sight ◽  
Adaptive Antenna ◽  
Mobile Terminals ◽  
Mobile Communication Systems ◽  
Mobile Stations ◽  
Antenna Systems

In connection with the development of technology of mobile terminals (cell phones, smartphones, tablets, computers with wireless modems, etc.) in the standards of UMTS (3G) and LTE (4G) great attention of manufacturers of these devices is concentrating on the modernization and development of antenna systems of mobile stations (terminals). Currently, antenna systems of mobile stations is implementing on base of technology in form of complex configuration microstrip transmission lines, which ensure compliance with the requirements of modern wireless communication standards. Adaptive antenna arrays and MIMO antenna systems are implemented in mobile terminals for road and railway transport, which allow to achieve a sustainable reception of signals from the base stations. As you know, the difficult conditions for the propagation of radio waves in cellular mobile communication systems are associated with their absorption, multiple reflection and scattering. In these cases, the laws that are true for the line of sight conditions (LOS, Line of Sight) no longer work. The properties of antennas integrated into mobile terminals (mobile stations - MS (Mobile Station)) directly depend on the statistical characteristics of the environment and the location of the operating terminal relative to the spatial position of the user. Therefore, when designing MS antennas in UMTS and LTE mobile communication systems in the frequency ranges from 450 to 3700 MHz, it is important to consider all of the above factors.

scholarly journals Modeling and Performance Analysis of an Improved Movement-Based Location Management Scheme for Packet-Switched Mobile Communication Systems

2014 ◽  
Vol 2014 ◽  
pp. 1-12
Author(s):  
Yun Won Chung ◽  
Jae Kyun Kwon ◽  
Suwon Park
Keyword(s):  
Mobile Communication ◽  
Communication Systems ◽  
Location Management ◽  
Mobile Station ◽  
Data Traffic ◽  
Location Update ◽  
Mobile Communication Systems ◽  
Traffic Characteristics ◽  
Management Scheme ◽  
Conventional Scheme

One of the key technologies to support mobility of mobile station (MS) in mobile communication systems is location management which consists of location update and paging. In this paper, an improved movement-based location management scheme with two movement thresholds is proposed, considering bursty data traffic characteristics of packet-switched (PS) services. The analytical modeling for location update and paging signaling loads of the proposed scheme is developed thoroughly and the performance of the proposed scheme is compared with that of the conventional scheme. We show that the proposed scheme outperforms the conventional scheme in terms of total signaling load with an appropriate selection of movement thresholds.

scholarly journals Hardware implementation of smart antenna systems

2006 ◽  
Vol 4 ◽  
pp. 185-188 ◽  
Author(s):  
H. Wang ◽  
M. Glesner
Keyword(s):  
Signal Processing ◽  
Mobile Communication ◽  
Communication Systems ◽  
Hardware Implementation ◽  
Smart Antenna ◽  
Antenna Design ◽  
Mobile Communication Systems ◽  
Antenna Structure ◽  
Function Blocks ◽  
Antenna Systems

Abstract. Smart antenna systems attract a lot attentions now and believably more in the future, as it can increase the capacity of mobile communication systems dramatically. Design of smart antenna systems combines the technologies of antenna design, signal processing, and hardware implementation. In this paper, a propose of smart antenna structure, as well as some function blocks that have been already implemented in hardware will be presented.

Sign in / Sign up

Export Citation Format

Share Document