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e-ISSN: 2455-6491 | Published by Global Advanced Research Publication House (GARPH)

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Archives of International Journal of Advanced Innovative Technology in Engineering(IJAITE)

Volume 9 Issue 2 March 2024



1. OFDM Networks for Enhanced BER And PAPR Mitigation in 5G Systems

AUTHOR NAME : Komal Marotrao Chavhan, Prof. Dr. Ravindra M. Deshmukh

ABSTRACT : O-OFDMNet, an intensity-modulated direct detection transmission system, employs deep learning-aided optical orthogonal frequency division multiplexing (O-OFDM). O-OFDMNet utilizes deep neural networks (DNNs) to convert a complex-valued signal at the transmitter into a non-negative signal in the time domain and vice versa at the receiver. Unlike traditional radio frequency (RF) OFDM, O-OFDMNet retains the related frequency-domain signal processing. Unlike current O-OFDM schemes which rely on the Hermitian symmetry of the spectral-domain signal to ensure the real-valuedness of the time-domain signal, our approach achieves equivalent spectral efficiency to the RF scheme, a milestone previously unattained by any existing methods. As an autoencoder architecture, the example shows that O-OFDMNet may be taught in an end-to-end manner to simultaneously improve the bit errors ratios and the transmissions peak-to-average ratio of power. across frequency-selective channels and additive white Gaussian noise environments. Additionally, technique achieves throughput comparable to RF-OFDM, significantly surpassing that of traditional O-OFDM.

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2. Design and Analysis of Motor cycle Helmet Using Composite Material

AUTHOR NAME : Mr. Manoj Ambadas Kharat, Prof. P. P. Kulkarni

ABSTRACT : In recent times, due to the rapidly growing population, traffic congestion, and a lack of parking space, two-wheelers have become the most popular mode of transportation. According to Indian traffic rules, wearing a helmet is mandatory for safety while riding a two-wheeler. To enhance rider safety, helmets are equipped with a lightweight plastic exterior, a protective polystyrene layer, and urethane comfort padding. Wearing helmets for an extended duration in summer is challenging due to the high temperature rise and inadequate ventilation, leading to increased stress levels for humans. This study deals with the design of helmets that are available in the market and how are they performing to the standards of different testing scenarios. A comparative analysis has also been done taking three different materials like Carbon Fiber, Acrylonitrile Butadiene Styrene (ABS), Glass Fiber Reinforced Polyester resin (GFRP) and analysing how they perform on a similar loading condition. The main purpose of this study is to give an insight on how the materials perform on given conditions and which will be a comparatively better option to be chosen.

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