Novel Algorithm for Nonlinear Distortion Reduction Based on Clipping and Compressive Sensing in OFDM/OQAM System

Vaigandla, Karthik Kumar; Benita, J.

doi:10.37391/ijeer.100334

Cited by 15 publications

(10 citation statements)

References 29 publications

(36 reference statements)

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“…This simplicity, dealing only with real numbers, contributes to the overall reduction in complexity. The MIMO (F-OFDM) waveforms benefit from this hybrid filter approach, emphasizing simplicity in implementation [27]- [30].…”

Section: Ufmc-fbmc System Modelmentioning

confidence: 99%

Filtered Ofdm System Model for Papr Reduction in the Growth Of 5g

Manish Patidar, Narendra Singh

2024

jes

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A proposed waveform for fifth generation (5G) communications is the filtered orthogonal frequency division multiplexing (F-OFDM) system. Filtering-based waveform frameworks distinguish themselves by suppressing out-of-band emission and asynchronous transmission. Meanwhile, the high Peak-To-Average Power Ratio (PAPR) remains a barrier to new waveform possibilities. Partials transmit sequence (PTS) is a successful strategy for reducing high PAPR in multicarrier networks. This work presents a multicarrier in OFDM and UFMC based on the Filter Bank Multicarrier (FBMC) waveform for communication systems. Furthermore, FBMC waveforms have limited orthogonality between subcarriers, which can mitigate Doppler and multipath effects. This FBMC approach uses the cosine law to filter the traffic signal, and the Welch algorithm is offered for segmentation, which lowers noise in estimated power spectra. As a result, a hybrid Selective Mapping (SLM) with Cuckoo Search and Ant Lion Optimization (CS-ALO) algorithms is suggested using the FBMC framework to reduce PAPR in the OFDM system. The proposed work is implemented, and detailed experimental research is carried out to show the increased performance in 5G networks. Based on a fair comparison, the F-OFDM scheme outperforms previous approaches in terms of BER and multicarrier system capacity. Simulation results show that the proposed waveform design and processing method outperform standard OFDM and F-OFDM methods in PAPR reduction and communication integrated systems.

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Section: Ufmc-fbmc System Modelmentioning

confidence: 99%

Filtered Ofdm System Model for Papr Reduction in the Growth Of 5g

Manish Patidar, Narendra Singh

2024

jes

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“…The amplitude and phase are both modulated, causing OFDM to behave improperly orthogonally. The modulated signal is then sent to IFFT for the inverse fast Fourier transform, which is used to translate the signal from the frequency domain to the time domain [17]. The examination of PAPR performance in an OFDM system is comparable to that of an OFDM system with a single antenna.…”

Section: Papr Mitigation Through Clipping and Windowingmentioning

confidence: 99%

Evaluation of OFDM system in terms of PAPR and BER using PAPR Reduction Techniques : Windowing and Clipping

Siluveru,

Nanda,

Kesoju

2024

BJN

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The issue of transferring signals in a non-intrusive and efficient manner is highly intriguing. Consequently, the utilisation of the Orthogonal Frequency Division Multiplexing (OFDM) transmission technology is employed due to its enhanced resilience against multipath fading and its ability to achieve better efficiency compared to alternative wireless communication methods. Although the PAPR issue offers certain benefits, it poses undesirable consequences for OFDM, leading to a significant decrease in data transmission rate. Consequently, the mitigation of peak-to-average power ratio (PAPR) issues leads to an improvement in the quality of service. The reduction of PAPR can be achieved by the implementation of clipping and windowing techniques. These approaches arrange the signal into discrete levels of similar magnitude and apply clipping to minimise the bit error rate (BER), resulting in a drop in PAPR. The proposed approach is implemented using the MATLAB software.

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“…In [24], the representation matrix of the system model is simplified. The Prototype Filter(PF) may be written as (11) The transmitted symbols can be expressed as The symbols on the receiver can be written as:…”

Section: Fbmc-oqam Systemmentioning

confidence: 99%

“…The typical HPA inverse model compensation approach requires numerous simulations to choose optimal compensation thresholds, which is inconvenient for actual applications, and the algorithm does not lower the PAPR of the OFDM/OQAM signal. By clipping at the transmitter, the approach presented in [11] decreases the PAPR of the OFDM/OQAM signal. A study of pulse shaping filters used in FBMC is presented in [12].…”

Section: Introductionmentioning

confidence: 99%

PAPR and BER Analysis in FBMC/OQAM System with Pulse Shaping Filters and Various PAPR Minimization Methods

Allanki Sanyasi Rao

2023

IJRITCC

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Filter Bank Multicarrier with Offset Quadrature Amplitude Modulation(FBMC/OQAM) system design based on frequency sampling prototype filter takes into account the low frequency utilization of Orthogonal Frequency Division Multiplexing(OFDM) caused by adding Cyclic Prefix(CP). The CP decreases spectral efficiency and increases Peak to Average Power Ratio(PAPR). FBMC is an OFDM enhancement. In this paper to reduce the PAPR, we explained companding methods. We have proposed an FBMC that makes use of prototype pulse shaping filters which can be adjusted to meet system requirements in order to defeat these limitations. Due to its significant effect on the performance of FBMC-OQAM, choosing the right filter is crucial. Different prototype filters are used to investigate the performance of the FBMC-OQAM in this paper. Using the validated system, it was found that frequency utilization is more and good out-band suppression as well as an excellent application value in 5G technology. By using ?-law companding method, FBMC/OQAM provides better performance. It produces low PAPR, low out of band(OoB), high BER performance, less computational complexity and high spectral efficiency as compared to other methods.

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Novel Algorithm for Nonlinear Distortion Reduction Based on Clipping and Compressive Sensing in OFDM/OQAM System

Cited by 15 publications

References 29 publications

Filtered Ofdm System Model for Papr Reduction in the Growth Of 5g

Filtered Ofdm System Model for Papr Reduction in the Growth Of 5g

Evaluation of OFDM system in terms of PAPR and BER using PAPR Reduction Techniques : Windowing and Clipping

PAPR and BER Analysis in FBMC/OQAM System with Pulse Shaping Filters and Various PAPR Minimization Methods

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