PAPR Reduction in UFMC for 5G Cellular Systems

Abstract

Universal filtered multi-carrier (UFMC) is a potential multi-carrier system for future cellular networks. UFMC provides low latency, frequency offset robustness, and reduced out-of-band (OOB) emission that results in better spectral efficiency. However, UFMC suffers from the problem of high peak-to-average power ratio (PAPR), which might impact the function of high power amplifiers causing a nonlinear distortion. We propose a comparative probabilistic PAPR reduction technique, called the decomposed selective mapping approach, to alleviate PAPR in UFMC systems. The concept of this proposal depends on decomposing the complex symbol into real and imaginary parts, and then converting each part to a number of different phase vectors prior to the inverse fast Fourier transform (IFFT) operation. The IFFT copy, which introduces the lowest PAPR, is considered for transmission. Results obtained using theoretical analysis and simulations show that the proposed approach can significantly enhance the performance of the UFMC system in terms of PAPR reduction. Besides, it maintains the OOB emission with candidate bit error rate and error vector magnitude performances.

A Multi-level Compression Scheme for Peak to Average Power Ratio Mitigation in SC-FDMA Communication System

“…One criterion for evaluating communication systems performance is PAPR which can be expressed mathematically by [21,24]:…”

Novel Selective Mapping with Oppositional Hosted Cuckoo Optimization Algorithm for PAPR Reduction in 5G UFMC Systems

“…Fifth generation (5G) mobile communication technique is developed to offer high speed, with improved safety and accessibility than current techniques of transmission between user and machines. [1] The 5G transmission network is significant for wireless connections, which is required to understand the applications like reducing the signal expenses, relaxing synchronization, machine kind transmission, Internet of Things (IoT), and provide better energy effectiveness than current techniques [6]. The presently utilized modulation system, in 4G network, is orthogonal frequency division multiplexing (OFDM).…”

Investment of Cyclic Prefix to Reduce the Peak-to-Average Power Ratio and Recover Original Phases Blindly

“…Thota S. et al [13] discussed a hybrid method, where the SLM was combined with PTS, and PTS/SLM techniques were combined with companding methods (µ-low and A-low) to analyze its characteristics in terms of PAPR and BER. In addition to that, probabilistic schemes participated in reducing PAPR in the presence of UFMC (as a multi-carrier system) like [11], [1]. The Dcomp-SLM represented by Al-Rayif M. et al [11] is capable to reduce PAPR while maintaining the PSD and BER of the OFDM signal by separating real and imaginary components of the base-band frames for PAPR reduction process.…”

“…In addition to that, probabilistic schemes participated in reducing PAPR in the presence of UFMC (as a multi-carrier system) like [11], [1]. The Dcomp-SLM represented by Al-Rayif M. et al [11] is capable to reduce PAPR while maintaining the PSD and BER of the OFDM signal by separating real and imaginary components of the base-band frames for PAPR reduction process. While the proposal of Fathy, S. A. et al…”