ItemArticle

Peak-to-Average Power Ratio (PAPR) Aware Signal Shaping in UFMC: An Adaptive Orthogonal Precoding and Gaussianized Companding Approach

Title
Peak-to-Average Power Ratio (PAPR) Aware Signal Shaping in UFMC: An Adaptive Orthogonal Precoding and Gaussianized Companding Approach
Creator
Raja, Ponmani; Sujatha, S.; Prajoon, P.
Description
Universal Filtered Multi-Carrier (UFMC) is a promising waveform for 5G and beyond wireless systems due to its superior spectral localization and low-latency characteristics; however, its high Peak-to-Average Power Ratio (PAPR) significantly degrades power amplifier efficiency and causes nonlinear distortion and out-of-band (OOB) emissions. To address these limitations, this paper proposes an Adaptive Hybrid Orthogonal Precoding with Gaussianized Companding (AHO-PCG) framework for PAPR-aware UFMC transmission. The proposed approach integrates adaptive orthogonal precoding, Gaussianized Dynamic Companding (GDC), and Selective Subcarrier Companding (SSC) within a joint optimization loop to balance PAPR reduction, signal fidelity, and spectral containment. Gaussianization reshapes the signal amplitude distribution to suppress extreme peaks, while adaptive precoding dynamically selects suitable orthogonal transforms based on signal characteristics, and SSC limits nonlinear processing to dominant peak-contributing subcarriers. Simulation results under 3GPP LTE-compliant parameters using QPSK, 16-PSK, and 64-QAM demonstrate that AHO-PCG achieves up to 4.4 dB PAPR reduction at a CCDF of 10-3, reduces EVM to 2.9%, suppresses OOB emissions to 42 dBm, and improves BER by up to an order of magnitude compared to baseline UFMC. These gains are achieved with a modest processing overhead, making the framework suitable for real-time 5G baseband implementations and extensible to future 6G waveform designs. 2026 Mahendrapublications.com, All rights reserved.
Source
International Journal of Advanced Science and Engineering;Volume;12;Issue;3;pp.6084-6103
Date
01-01-2026
Publisher
Mahendra Publications
Subject
Adaptive Hybrid Orthogonal Precoding, Gaussianized Companding; Amplifiers; Energy Efficacy; Selective subcarrier companding; Universal Filtered Multi-Carrier
Coverage
Raja P., Department of Electronics & Communication Engineering, Christ (Deemed to be University), Bangalore, 560074, India; Sujatha S., Department of Electronics & Communication Engineering, Christ (Deemed to be University), Bangalore, 560074, India; Prajoon P., Department of Electronics & Communication Engineering, Jyothi Engineering College, Kerala, 679531, India
Rights
All Open Access; Bronze Open Access
Relation
ISSN: 23495359;
Format
online
Language
English
Type
Article

Citation

Raja, Ponmani; Sujatha, S.; Prajoon, P., “Peak-to-Average Power Ratio (PAPR) Aware Signal Shaping in UFMC: An Adaptive Orthogonal Precoding and Gaussianized Companding Approach,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 19, 2026, https://archives.christuniversity.in/items/show/23456.

Output Formats