## Appendix A
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Serial** & **Author Name** & **Title** & **Year** & **Findings and Results** \\ \hline
5 & [PERSON] et al. & A Review of Virtual Reality and Augmented Reality Use-Cases of Brain-Computer Interface Based Applications For Smart Cities & 2022 & The brain–computer interface (BCI) allows for the exchange of information and signals through different controlling machines such as sensible wearable headsets and embedded devices. \\ \hline
6 & [PERSON] et al. & Symbolic Radio: Cognitive Backscattering Communications For Future Wireless Networks & 2020 & Symbiotic radio technology is effective for smooth communication processes as it employs backscattering link signals for advanced level communication and interaction in smart cities. \\ \hline
7 & [PERSON] et al. & 6G Enabled Smart Infrastructure For A Sustainable Society: Opportunities, Challenges, and Research Roadmap & 2021 & Reconfigurable Intelligent Surface (RIS) is a technology that is used in the doors and windows of buildings in smart cities as it shares signals without any interference among individuals. \\ \hline
8 & [PERSON] et al. & A Comprehensive Survey of 6 Wireless Communications & 2020 & MIMO technology in 6G wireless connection can operate without cells and provides spectral efficiency in a communication network. \\ \hline
9 & [PERSON] et al. & Wireless Information and Power Transfer: From Scientific Hypothesis to Engineering Practice & 2015 & Simultaneous Wireless Information and Power Transfer (SWIPT), technology is able to detect sensors using wireless connections to improve the communication network. \\ \hline
10 & [PERSON] and [PERSON] & Satellite Communication At Millimeter Waves: A Key Enabler of The 6G Era & 2020 & the Space–Air–Ground–Sea Integrated Network (SAGSIN) integrates air, land and sea to control traffic and enhance communication. \\ \hline
11 & [PERSON] et al. & 6G Internet of Things: A Comprehensive Survey & 2021 & The use of 6G technology enables the integration of various IoT technologies, such as edge intelligence, space–air–ground–underwater communications, reconfigurable intelligent surfaces, massive ultra-reliable, Terahertz communications, low-latency communications, and blockchain. \\ \hline
12 & [PERSON] et al. & Fundamentals of Smart Cities & 2022 & IoT-based 6G systems use technologies such as RFID and wireless sensor networks to process and transfer data at a high speed, which ensures their high performance. \\ \hline \multicolumn{5}{c}{Key Applications} \\ \hline
1 & [PERSON] et al. & A Vision of 6G Wireless Systems: Applications, Trends, Technologies, and Open Research Problems & 2019 & 6G wireless communication can be employed in smart cities to develop a hybrid model of technology in a 3D setting. \\ \hline
2 & [PERSON] et al. & 6G Wireless Communication Systems: Applications, Requirements, Technologies, Challenges, and Research Directions & 2020 & 6G wireless communication can be used for LiDAR, radar GPS, sonar and odometry and inertial measurement units when autonomous driving patterns are promoted. 6G wireless communication may improve ground-based controller communication when employed in robotics and the autonomous driving of vehicles. Moreover, the 6G wireless communication network can be used in the manufacturing industry with a high-data-quality transfer rate, with minimal chances of error. The 6G system also prevents data loss and ensures the safe transmission of data from the sender to the receiver. 6G is also applicable in haptic communication in smart cities. \\ \hline
3 & [PERSON] et al. & A Speculative Study on 6G & 2020 & A smart healthcare system includes 6G precision medical treatment, providing high-level protection and supporting healthcare workers. \\ \hline \hline \end{tabular}
\end{table} 
Table 1: _Cont._