The much recent global pandemic, COVID-19 has brought drastic changes to the livelihood of people from all avenues of life across the nation. As normalcy is being slowly restored, it is also essentially crucial that the health and wellness of members are ensured. Instead of the manual biometric system, facial recognition can be deployed to mark the presence of the members. Besides, a non-contact infrared sensor can be utilized to check for the body temperature of the individuals. If the body temperature exceeds the threshold value, an intimation will be sent to the higher authorities concerning the wellness of the individual, otherwise, their presence to the organization/institution will be noted. Furthermore, using a QR scanner, the health history of each person as per the Arogya S etu app will be taken into accord. The attendance checking feature has been clubbed with health verification so that every employee will mandatorily report before the system since presence for work is important to everyone. The data generated by the static portal setup is recorded by the device daily which will then be uploaded into a database and stored on the Cloud. The system can be further advanced by including a Bluetooth module for proximity.

No abstract

No abstract

No abstract

No abstract

No abstract

Abstract-The

Multi-carrier code division multiple access (MC-CDMA) technique is one of the strong candidates for next generation wireless mobile communication systems. Multi-carrier systems are very much sensitive to carrier frequency offset (CFO) results in intercarrier interference (ICI). To mitigate ICI without any spectral loss, a second order duobinary coded phase rotated conjugate cancellation algorithm is proposed in this paper. In the conventional phase rotated conjugate cancellation (PRCC) technique, one path carries the MC-CDMA signal with a phase spin of ϕ and the other path carries the conjugate of the first path signal with -ϕ phase spin. This artificial phase rotation allows the transmitter to tune the transmitted signals so that the ICI effects could be mutually cancelled at the receiver. Although the PRCC technique reduces the spectral efficiency, the limitation can be overcome by the joint second order duobinary coding scheme with PRCC technique. In the proposed method, the correlative coding between the binary symbols modulated on adjacent subcarriers is used to reduce the ICI without any spectral loss. Simulation results show that the proposed PRCC method provides better carrier to interference ratio (CIR) and bit error rate (BER) performances compared to the conventional conjugate cancellation (CC) technique.