Agile Spectrum-Sharing Wireless Systems using Software-Defined Radios and Reconfigurable Antennas

2021 ◽  
Author(s):  
Danh Huu Hoang Nguyen
Keyword(s):  
Spectrum Sharing ◽  
Wireless Systems ◽  
Reconfigurable Antennas ◽  
Software Defined Radios

Reconfigurable Antenna

2016 ◽  
pp. 237-263
Author(s):  
Mohamad Kamal A Rahim ◽  
Huda A. A. Majid ◽  
Mohamad Rijal Hamid
Keyword(s):  
Communication Systems ◽  
Low Cost ◽  
Wireless Systems ◽  
Reconfigurable Antennas ◽  
Effective Length ◽  
Slot Antenna ◽  
Wireless Communication Systems ◽  
Reconfigurable Antenna ◽  
5 Ghz ◽  
Narrow Bands

Reconfigurable antennas have attracted a lot of attention especially in future wireless communication systems. Superior features such as reconfigurable capability, low cost, multi-purpose functions and size miniaturization have given reconfigurable antennas advantage to be integrated into a wireless systems. In this chapter, two types of reconfigurable antennas are discussed. First, frequency reconfigurable narrowband microstrip slot antenna (FRSA) is presented. The proposed antenna is designed to operate at six reconfigurable frequency bands from 2 GHz to 5 GHz with bidirectional radiation pattern. The second antenna design is frequency reconfigurable narrowband patch-slot antenna (FRPSA) is presented. The antenna is a combination of a microstrip patch and slot antenna. Nine different narrow bands are produced by tuning the effective length of the slot. The performances of the antenna in term of simulated and measured results are presented. In conclusion, good agreement between the simulated and measured results has been attained.

Spectrum sharing for 5G wireless systems (Spectrum sharing challenge)

2015 ◽  
Author(s):  
Ankit Kaushik ◽  
Felix Wunsch ◽  
Andrej Sagainov ◽  
Nicolas Cuervo ◽  
Johannes Demel ◽  
...  
Keyword(s):  
Spectrum Sharing ◽  
Wireless Systems

scholarly journals Electrical Reconfiguration Techniques for Frequency Agility in Patch Antennas

2019 ◽  
Vol 9 (2) ◽  
pp. 3406-3411
Keyword(s):  
Wireless Systems ◽  
Reconfigurable Antennas ◽  
Patch Antennas ◽  
System Complexity ◽  
Effective Utilization ◽  
Wide Range

Wireless Systems are subjected to overwhelming advancements with the exponential demands in the field of Communication. This has led to the evolution of Reconfigurable antennas which gained enough significance as they are capable of modifying them.selves to different operating frequencies, patterns or polarizations. Out of these, Frequency Reconfigurable Antennas which can be operated at multi-frequency environment have been found to have a wide range of applications. The reconfiguration can be achieved using various switching mechanisms like, electrical, optical, etc. These are found to support various communication standards, ensure effective utilization of spectrum, reduce system complexity and hence cost. The recent researches on frequency reconfigurable antennas using electrical switches are analyzed in this paper based on their performances and a comparison on various switching techniques is presented.

On the impact of channel bandwidths and deployment areas clutter loss on spectrum sharing of next wireless systems

2008 ◽  
Author(s):  
Zaid A. Shamsan ◽  
Alaaeldin B. Ahmed ◽  
Waiel E. Osman ◽  
Lway F. Abdulrazak ◽  
Tharek Abd. Rahman
Keyword(s):  
Spectrum Sharing ◽  
Wireless Systems ◽  
The Impact ◽  
Channel Bandwidths

scholarly journals Towards Collaborative and Dynamic Spectrum Sharing via Interpretation of Spectrum Access Policies

2021 ◽  
Vol 11 (15) ◽  
pp. 7056
Author(s):  
Jakub Moskal ◽  
Jae-Kark Choi ◽  
Mieczyslaw M. Kokar ◽  
Soobin Um ◽  
Jeung Won Choi
Keyword(s):  
Spectrum Sharing ◽  
Automatic Generation ◽  
Radio Networks ◽  
Dynamic Spectrum ◽  
Spectrum Access ◽  
System Operation ◽  
Dynamic Spectrum Sharing ◽  
Policy Interpretation ◽  
Software Defined Radios ◽  
Access Policies

This paper describes some of the challenges that need to be addressed in order to develop collaborative spectrum-sharing systems. The importance of these challenges stems from the assumption that rules for spectrum sharing can change after the deployment of radio networks and that the whole system must be able to adapt to them. To address such a requirement, we used a policy-based approach in which transmissions are controlled by a policy interpreter system, and the policies can be modified during system operation. Our primary goal was to develop a prototype of such a system. In this paper, we outline the implementation of policy interpretation, automatic generation of transmission opportunities in case a request for transmission is denied by the policy reasoner, and the generation of rendezvous channels for the synchronization of otherwise asynchronously running software-defined radios.

Sign in / Sign up

Export Citation Format

Share Document