scholarly journals Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: a Survey, Open Challenges and Future Research Directions

2022 ◽  
Author(s):  
Demos Serghiou ◽  
Mohsen Khalily ◽  
Tim Brown ◽  
Rahim Tafazolli
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Measurement Techniques ◽  
Systems Design ◽  
Channel Modeling ◽  
Use Cases ◽  
Future Research ◽  
Potential Candidate ◽  
High Data ◽  
Wireless Communications Systems

The Terahertz (THz) band (0.1-3.0 THz) spans a great portion of the Radio Frequency (RF) spectrum that is mostly unoccupied and unregulated. It is a potential candidate for application in Sixth-Generation (6G) wireless networks as it has the capabilities of satisfying the high data rate and capacity requirements of future wireless communication systems. Profound knowledge of the propagation channel is crucial in communication systems design which nonetheless, is still at its infancy as channel modeling at THz frequencies has been mostly limited to characterizing fixed Point-to-Point (P2P) scenarios up to 300 GHz. Provided the technology matures enough and models adapt to the distinctive characteristics of the THz wave, future wireless communications systems will enable a plethora of new use cases and applications to be realized in addition to delivering higher spectral efficiencies that would ultimately enhance the Quality-of-Service (QoS) to the end user. In this paper, we provide an insight into THz channel propagation characteristics, measurement capabilities and modeling methods along with recommendations that will aid in the development of future models in the THz band. We survey the most recent and important measurement campaigns and modeling efforts found in literature based on the use cases and system requirements identified. Finally, we discuss the challenges and limitations of measurements and modeling at such high frequencies and contemplate the future research outlook toward realizing the 6G vision.

scholarly journals Terahertz Channel Propagation Phenomena, Measurement Techniques and Modeling for 6G Wireless Communication Applications: a Survey, Open Challenges and Future Research Directions

2022 ◽  
Author(s):  
Demos Serghiou ◽  
Mohsen Khalily ◽  
Tim Brown ◽  
Rahim Tafazolli
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Measurement Techniques ◽  
Systems Design ◽  
Channel Modeling ◽  
Use Cases ◽  
Future Research ◽  
Potential Candidate ◽  
High Data ◽  
Wireless Communications Systems

The Terahertz (THz) band (0.1-3.0 THz) spans a great portion of the Radio Frequency (RF) spectrum that is mostly unoccupied and unregulated. It is a potential candidate for application in Sixth-Generation (6G) wireless networks as it has the capabilities of satisfying the high data rate and capacity requirements of future wireless communication systems. Profound knowledge of the propagation channel is crucial in communication systems design which nonetheless, is still at its infancy as channel modeling at THz frequencies has been mostly limited to characterizing fixed Point-to-Point (P2P) scenarios up to 300 GHz. Provided the technology matures enough and models adapt to the distinctive characteristics of the THz wave, future wireless communications systems will enable a plethora of new use cases and applications to be realized in addition to delivering higher spectral efficiencies that would ultimately enhance the Quality-of-Service (QoS) to the end user. In this paper, we provide an insight into THz channel propagation characteristics, measurement capabilities and modeling methods along with recommendations that will aid in the development of future models in the THz band. We survey the most recent and important measurement campaigns and modeling efforts found in literature based on the use cases and system requirements identified. Finally, we discuss the challenges and limitations of measurements and modeling at such high frequencies and contemplate the future research outlook toward realizing the 6G vision.

A Framework for Statistical Channel Modeling in 5G Wireless Communication Systems

2020 ◽  
pp. 31-54
Author(s):  
Caslav Stefanovic ◽  
Danijel Djosic ◽  
Stefan Panic ◽  
Dejan Milic ◽  
Mihajlo Stefanovic
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Channel Modeling ◽  
Wireless Communication Systems ◽  
Statistical Channel Modeling

scholarly journals Some practical constraints and solutions for optical camera communication

2020 ◽  
Vol 378 (2169) ◽  
pp. 20190191 ◽  
Author(s):  
Weijie LIU ◽  
Zhengyuan Xu
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Consumer Electronics ◽  
Frame Rate ◽  
Future Research ◽  
Optical Wireless Communication ◽  
Optical Wireless ◽  
Atmospheric Scattering ◽  
Practical Constraints ◽  
Optical Camera Communication

Mobile wireless communication heavily relies on the radio frequency to convey message and data. However, its limited spectrum can hardly meet the demands for the future high data rate applications. Optical wireless communication, in particular visible light communication, opens up vast optical spectrum for communication, and meanwhile can retrofit the light sources as the communication transmitters in the existing working or living environments. In conjunction with the ubiquitous cameras in hand-held consumer electronics such as smartphones and pads, optical camera communication (OCC) further takes advantages of image sensors as the communication receivers and realizes low-cost communication systems. This article first provides an overview of OCC systems. It then addresses some practical constraints, ranging from sensor low frame rate and instability, rolling shutter readout, to visual qualities of displayed images and videos, and link blockage between the transmitter and receiver. Accordingly, it introduces existing and new solutions to deal with those constraints by data modulation, newly developed camera structures, post-processing of sensed signals and non-line of sight OCC as a new form. In particular, indirect paths by either the indoor surface reflection or the outdoor atmospheric scattering are explored for link connectivity under blockage. Finally, some future research directions are suggested. This article is part of the theme issue ‘Optical wireless communication’.

Assessment of Rural Intelligent Transportation System Wireless Communications Solutions

2000 ◽  
Vol 1739 (1) ◽  
pp. 51-58 ◽  
Author(s):  
Qingyan Yang ◽  
Virginia Sisiopiku ◽  
Jim A. Arnold ◽  
Paul Pisano ◽  
Gary G. Nelson
Keyword(s):  
Wireless Communications ◽  
Wireless Communication ◽  
Intelligent Transportation Systems ◽  
Urban Areas ◽  
Communication Systems ◽  
Intelligent Transportation ◽  
Transportation Systems ◽  
Future Research ◽  
Wireless Communication Systems ◽  
Rural Environments

Rural transportation systems have different features and needs than their urban counterparts. To address safety and efficiency concerns in rural environments, advanced rural transportation systems (ARTS) test and deploy appropriate intelligent transportation systems (ITS) technologies, many of which require communication support. However, wireless communication systems that currently serve urban areas often are not available or suitable in rural environments. Thus, a need exists to identify communication solutions that are likely to address successfully the needs and features of ARTS applications. Current and emerging wireless communications systems and technologies have been systematically assessed with respect to rural ITS applications. Wireless communication functions associated with rural ITS functions are first identified. Then requirements for applicable communication technologies in the rural environment are defined. Existing and emerging wireless communication systems and technologies are reviewed and evaluated by a systematic process of assessing rural ITS wireless solutions. Finally, recommendations for future research and operational tests are offered. The analysis results are expected to benefit rural ITS planners by identifying suitable wireless solutions for different rural contexts.

scholarly journals Series-fed 3×3 Square Patch Array for Wireless Communication Applications using CSTMWS

2019 ◽  
Vol 9 (1) ◽  
pp. 5424-5429 ◽  
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Simulation Software ◽  
Array Antenna ◽  
Strip Line ◽  
Rate Transmission ◽  
Data Rates ◽  
Quarter Wave ◽  
Wireless Communications Systems ◽  
Free Material

The wireless communications systems have been really develop to the extraordinary performance applications. Present days, the WCS offers extraordinary data rate transmission and preserve rising for advanced data rates equipment. In wireless communication systems applications using various types of micro strip antennas. This paper presents the design of a 3×3 series-fed square micro strip patch array antenna to function at the frequency of 5.4 GHz and 50 ohm line port impedance. The micro strip feed line frequently combines a quarter-wave (λ/4) transformer for matching of impedance. The design of proposed antenna we are expending straight line feed micro strip line feeding technique. This antenna array is based on Rogers RT 5880 loss free material, which is having 2.2 relative permittivity constant. The series fed 3 by 3 square patch array antenna is designed on Computer Simulation Technology (CST) Microwave Studio (MWS) simulation software. After simulation, the antenna presentation features such as return loss, percentage bandwidth, directivity, antenna gain, radiation efficiency, E-Field, H-Field and radiation Pattern are measured.

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