A Novel GFDM Waveform Design Based on Cascaded WHT-LWT Transform for the Beyond 5G Wireless Communications.

Meryem Maraş,Asuman Savaşcıhabeş,Elif Nur Ayvaz,Meltem Gömeç,Ali Özen

doi:10.3390/s21051831

Meryem Maraş, Asuman Savaşcıhabeş + Show 3 more

Open Access

https://doi.org/10.3390/s21051831

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Journal: Sensors (Basel, Switzerland)	Publication Date: Mar 5, 2021
Citations: 9	License type: CC BY 4.0

Affiliation: Nuh Naci Yazgan University

Abstract

In this paper, a new WHT-LWT-GFDM waveform obtained by combining Walsh–Hadamard Transform (WHT), Lifting Wavelet Transform (LWT), and Generalized Frequency Division Multiplexing (GFDM) is presented for use in next-generation wireless communication systems. The proposed approach meets the requirement of 5th-generation (5G) and beyond communication schemes in terms of low latency, low peak-to-average-power ratio (PAPR), and low bit-error rate (BER). To verify the performance of the presented waveform, PAPR and BER simulation results were obtained in additive white Gaussian noise (AWGN) and flat Rayleigh fading channels, and the performance of the proposed system was compared with conventional Orthogonal Frequency Division Multiplexing (OFDM), GFDM, and Walsh–Hadamard transform-based GFDM (WHT-GFDM). Simulation results show that the proposed waveform achieves the best BER and PAPR performances and it provides considerable performance gains over the conventional waveforms.

Highlights

Wireless communication systems face severe necessities in terms of transmission speed, technique capacity, reliability, and latency to meet the communication of new rising implementations such as Internet of Things (IoT), ultra-high description multimedia and virtual reality (VR) in the fifth generation (5G) [1,2,3]
The traditional Orthogonal Frequency Division Multiplexing (OFDM), Generalized Frequency Division Multiplexing (GFDM), Walsh–Hadamard Transform (WHT)-GFDM [18] and the proposed WHT-Lifting Wavelet Transform (LWT)-GFDM method are compared in the additive white Gaussian noise (AWGN) channel environment
peak-to-average-power ratio (PAPR) Simulation Results on Receiver Side We investigate the effect of channel noise on the PAPR performance of the waveforms considered in this paper

Summary

Introduction

Wireless communication systems face severe necessities in terms of transmission speed, technique capacity, reliability, and latency to meet the communication of new rising implementations such as Internet of Things (IoT), ultra-high description multimedia and virtual reality (VR) in the fifth generation (5G) [1,2,3]. The development of wireless communication technique is limited to several harmful factors in the radio propagation environments, such as inter-symbol interference (ISI), multi-user interference (MUI), propagation attenuation, and multipath fading [4]. These damaging components cause various technological difficulties in the plan of reliable wireless communication systems. The GFDM is based on modulation per subcarrier, where every subcarrier is single and independently modulated with multiple symbols In this modulation scheme, the subcarrier is filtered through a circularly shifted prototype filter in the time and frequency regions. To obtain better performance than OFDM in several applications, used interference reduction techniques such as matched filter receiver with repetitive interference reduction, which is establish be effective, can be exploited well-designed receiving techniques [10]

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