Adaptive DFT-s-OFDM employed novel multi layered scheme for reduction of PAPR for mMTC node in 5G (NR)

Sharma, Vipin; Arya, Rajeev; Kumar, Sandeep

doi:10.1016/j.phycom.2023.102134

Cited by 3 publications

(3 citation statements)

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“…Finally, the temporal sequence of the OFDM signal marked by index u, which has the lowest PAPR and is selected for transmission, can be expressed as (6).…”

Section: Papr Reduction By Selected Mapping Techniquementioning

confidence: 99%

“…Its resilience to fading channels and compatibility with technologies like multi-input multi-output (MIMO) contribute to high data rates and system performance. As 5G emerges, MCM techniques, particularly OFDM, remain fundamental [6]. The 3GPP's selection of OFDM in 5G's NR air interface underscores its advantages and Indonesian J Elec Eng & Comp Sci ISSN: 2502-4752 …”

Section: Introductionmentioning

confidence: 99%

“…This variation not only compromises the efficiency of high-power amplifiers (HPA) but also introduces complexities in nonlinear components, leading to out-of-band radiation and subsequent degradation in the bit error rate (BER). To address this challenge, various approaches have been proposed to mitigate high PAPR in both OFDM [6]-[9] and MIMO-OFDM signals [10]- [12]. These approaches encompass techniques such as clipping [13], clipping and filtering [14], tone injection [15], coding [16], peak windowing [17], selected mapping (SLM) [18], [19], and partial transmit sequence (PTS) [20]- [22].…”

Section: Introductionmentioning

confidence: 99%

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Enhancing PAPR reduction efficiency in MIMO-OFDM systems via selective mapping and metaheuristic algorithms

Amhaimar,

Nadir,

Abdellah

et al. 2024

IJEECS

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The relentless evolution of communication systems, driven by the demands of 5G and the impending 6G networks, necessitates heightened data rates and spectral efficiency. orthogonal frequency division multiplexing (OFDM), a form of multicarrier modulation employed in multi-input multi-output (MIMO) systems, stands as a pivotal technology. Yet, OFDM grapples with challenges, notably the peak-to-average power ratio (PAPR) issue. Selective mapping (SLM) has been a favored technique for mitigating PAPR in OFDM, albeit challenged by computational complexities in its pursuit of discovering optimal phase factors. This paper pioneers a transformative approach by integrating metaheuristic algorithms genetic algorithm (GA), particle swarm optimization (PSO), and the innovative fireworks algorithm (FWA) into SLM for PAPR reduction while minimizing computational complexity. Simulation results not only affirm the efficacy of SLM-based techniques but also spotlight the potential of metaheuristic algorithms in addressing PAPR challenges in modern communication systems. The study transcends single-antenna systems, extending to MIMO-OFDM systems based on WiMAX standards, validating the efficacy of these techniques in multi-antenna configurations. Crucially, the FWA, proposed for the first time in this paper, emerges as a robust candidate, striking an enviable balance between computational efficiency and performance, achieving a notable PAPR reduction with a favorable search number.

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“…Finally, the temporal sequence of the OFDM signal marked by index u, which has the lowest PAPR and is selected for transmission, can be expressed as (6).…”

Section: Papr Reduction By Selected Mapping Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%