Enhanced PAPR Reduction in OFDM Systems with ACE and Subcarrier Grouping

Problem Definition

Problem Description: The problem that this project aims to address is the high Peak-to-Average Power Ratio (PAPR) experienced in Orthogonal Frequency Division Multiplexing (OFDM) systems. High PAPR can lead to inefficiencies in power amplification and can cause interference in adjacent channels. The current solutions using Active Constellation Extension (ACE) have shown improvements in PAPR reduction, but issues such as disturbance in adjacent channels due to clipping techniques still persist. Therefore, there is a need for a more effective method to reduce PAPR in OFDM systems without causing interference in adjacent channels. This project proposes a new scheme that includes clipping techniques applied to both sides of the signals and signal filtration to achieve smoother signals, ultimately aiming to improve both PAPR and Bit Error Rate (BER) performance.

Proposed Work

The research topic titled "PAPR Reduction in OFDM Systems Using Modified Active Constellation Extension and Subcarrier Grouping Techniques" focuses on addressing the issue of high Peak-to-Average Power Ratio (PAPR) in Orthogonal Frequency Division Multiplexing (OFDM) systems. The proposed Active Constellation Extension (ACE) method aims to improve performance parameters such as PAPR and Bit Error Rate (BER), overcoming the limitations of previous techniques involving clipping. In this study, a new scheme is introduced utilizing clipping on both sides of the signals and signal filtration to achieve smoother signals. The analysis and evaluation of the proposed scheme are conducted using Matlab, demonstrating improved results in terms of PAPR and BER. This research contributes to the advancement of OFDM-based wireless communication systems, addressing challenges related to signal transmission efficiency.

The project falls under the category of Latest Projects for M.Tech and PhD Thesis Research Work, specifically focusing on MATLAB-Based Projects and Wireless Research-Based Projects. Additionally, it aligns with subcategories such as MATLAB Projects Software, Channel Equalization, OFDM-based wireless communication, and PAPR in CDMA Systems.

Application Area for Industry

This project's proposed solutions can be applied in various industrial sectors such as telecommunications, wireless communication, and networking. In industries where OFDM systems are utilized for data transmission, the high Peak-to-Average Power Ratio (PAPR) can lead to inefficiencies in power amplification and interference in adjacent channels. By implementing the new scheme proposed in this research, which includes clipping techniques applied to both sides of the signals and signal filtration, industries can experience smoother signals, improved PAPR, and reduced Bit Error Rate (BER) performance. Specific challenges that industries face, such as signal transmission efficiency and interference in adjacent channels, can be effectively addressed by the solutions provided in this project. The benefits of implementing these solutions include enhanced performance parameters, increased efficiency in power amplification, and improved overall signal quality in OFDM-based systems.

Overall, the project's contributions to the advancement of wireless communication systems align with the demands of industries that rely on efficient and reliable data transmission methods, making it a valuable solution for various industrial domains.

Application Area for Academics

The proposed project focusing on "PAPR Reduction in OFDM Systems Using Modified Active Constellation Extension and Subcarrier Grouping Techniques" offers significant implications for research for MTech and PhD students in the field of wireless communication systems. By addressing the challenge of high Peak-to-Average Power Ratio (PAPR) in OFDM systems, the study offers innovative solutions to improve performance parameters such as PAPR and Bit Error Rate (BER). The project introduces a novel scheme incorporating clipping techniques on both sides of signals and signal filtration to achieve smoother signals, ultimately aiming to enhance efficiency in signal transmission. MTech and PhD students can utilize the code and literature of this project for their research work, exploring innovative methods, simulations, and data analysis for their dissertations, theses, or research papers. This project falls under the categories of MATLAB-Based Projects and Wireless Research-Based Projects, specifically focusing on MATLAB Projects Software, Channel Equalization, OFDM-based wireless communication, and PAPR in CDMA Systems.

The future scope of this research includes further optimization of the proposed scheme and its application in real-world OFDM systems to validate its effectiveness and practical relevance.

Keywords

PAPR reduction, Orthogonal Frequency Division Multiplexing, OFDM systems, Peak-to-Average Power Ratio, Active Constellation Extension, ACE, clipping techniques, signal filtration, Bit Error Rate, wireless communication systems, MATLAB-based projects, M.Tech thesis, PhD research work, signal transmission efficiency, subcarrier grouping techniques, channel equalization, CDMA systems.