scholarly journals Evolution of millimeter-wave communications toward next generation in wireless technologies

2019 ◽  
Vol 17 (6) ◽  
pp. 3161
Author(s):  
Aws Zuheer Yonis
Keyword(s):  
Millimeter Wave ◽  
Next Generation ◽  
Wireless Technologies ◽  
Millimeter Wave Communications

scholarly journals A Review on Coexistence Issues of Broadband Millimeter-Wave Communications

2021 ◽  
Author(s):  
Ching-Lun Tai ◽  
Derek Wu
Keyword(s):  
Millimeter Wave ◽  
Multiple Access ◽  
High Rate ◽  
Next Generation ◽  
Future Directions ◽  
Backward Compatibility ◽  
Microwave Communications ◽  
Coexistence Issues ◽  
Shed Light ◽  
Millimeter Wave Communications

<div>With higher frequencies and broader spectrum than conventional frequency bands, the millimeter-wave (mmWave) band is suitable for next-generation wireless networks featuring short-distance high-rate communications. As a newcomer, mmWaves are expected to have the backward compatibility with existing services and collaborate with other technologies in order to enhance system performances. Therefore, the coexistence issues become an essential topic for next-generation wireless communications. In this paper, we systematically review the coexistence issues of broadband mmWave communications and their corresponding solutions proposed in the literature, helping shed light on the insights of the mmWave design. Particularly, the works surveyed in this paper can be classified into four categories: coexistence with microwave communications, coexistence with fixed services, coexistence with non-orthogonal multiple access (NOMA), and other coexistence issues. Results of numerical evaluations inspired by the literature are presented for a deeper analysis. We also point out some challenges and future directions for each category as a roadmap to further investigate the coexistence issues of broadband mmWave communications.</div>

scholarly journals A Review on Coexistence Issues of Broadband Millimeter-Wave Communications

2021 ◽  
Author(s):  
Ching-Lun Tai ◽  
Derek Wu
Keyword(s):  
Millimeter Wave ◽  
Multiple Access ◽  
High Rate ◽  
Next Generation ◽  
Future Directions ◽  
Backward Compatibility ◽  
Microwave Communications ◽  
Coexistence Issues ◽  
Shed Light ◽  
Millimeter Wave Communications

<div>With higher frequencies and broader spectrum than conventional frequency bands, the millimeter-wave (mmWave) band is suitable for next-generation wireless networks featuring short-distance high-rate communications. As a newcomer, mmWaves are expected to have the backward compatibility with existing services and collaborate with other technologies in order to enhance system performances. Therefore, the coexistence issues become an essential topic for next-generation wireless communications. In this paper, we systematically review the coexistence issues of broadband mmWave communications and their corresponding solutions proposed in the literature, helping shed light on the insights of the mmWave design. Particularly, the works surveyed in this paper can be classified into four categories: coexistence with microwave communications, coexistence with fixed services, coexistence with non-orthogonal multiple access (NOMA), and other coexistence issues. Results of numerical evaluations inspired by the literature are presented for a deeper analysis. We also point out some challenges and future directions for each category as a roadmap to further investigate the coexistence issues of broadband mmWave communications.</div>

SPECTRUM SENSING TECHNIQUES FOR NEXT GENERATION WIRELESS TECHNOLOGIES

2020 ◽  
Vol 79 (13) ◽  
pp. 1149-1166
Author(s):  
Parnika Kansal ◽  
A. Kumar ◽  
M. Gangadharappa
Keyword(s):  
Spectrum Sensing ◽  
Next Generation ◽  
Wireless Technologies

scholarly journals Millimeter Wave Spatial Channel Characterization for Vehicular Communications

Proceedings ◽  
2019 ◽  
Vol 42 (1) ◽  
pp. 64 ◽  
Author(s):  
Fidel Rodríguez-Corbo ◽  
Leyre Azpilicueta ◽  
Mikel Celaya-Echarri ◽  
Peio López-Iturri ◽  
Imanol Picallo ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Autonomous Vehicles ◽  
Communication Systems ◽  
Vehicular Networks ◽  
Small Scale ◽  
Vehicular Communications ◽  
Next Generation ◽  
Vehicular Communication ◽  
High Definition ◽  
High Data

With the growing demand of vehicle-mounted sensors over the last years, the amount of critical data communications has increased significantly. Developing applications such as autonomous vehicles, drones or real-time high-definition entertainment requires high data-rates in the order of multiple Gbps. In the next generation of vehicle-to-everything (V2X) networks, a wider bandwidth will be needed, as well as more precise localization capabilities and lower transmission latencies than current vehicular communication systems due to safety application requirements; 5G millimeter wave (mmWave) technology is envisioned to be the key factor in the development of this next generation of vehicular communications. However, the implementation of mmWave links arises with difficulties due to blocking effects between mmWave transceivers, as well as different channel impairments for these high frequency bands. In this work, the mmWave channel propagation characterization for V2X communications has been performed by means of a deterministic in-house 3D ray launching simulation technique. A complex heterogeneous urban scenario has been modeled to analyze the different propagation phenomena of multiple mmWave V2X links. Results for large and small-scale propagation effects are obtained for line-of-sight (LOS) and non-LOS (NLOS) trajectories, enabling inter-data vehicular comparison. These analyzed results and the proposed methodology can aid in an adequate design and implementation of next generation vehicular networks.

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