PAPR reduction for OQAM/OFDM signals using Optimized Iterative Clipping and Filtering technique

Udayakumar, E.; Vetrivelan, P.

doi:10.1109/icsns.2015.7292439

Cited by 9 publications

(2 citation statements)

References 10 publications

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“…To deal with these issues, the common amplitude limiting [10], and the encoded peak-to-average power ratio (PAPR) reduction [11], [12] schemes were proposed in IMDD-OFDM system to reduce the bit resolution. However, for these schemes, only few quantization bits were reduced or the limited performance improvements were achieved, and either extra complexity or clipping noises were introduced which would be not suitable for the practical system.…”

Section: Introductionmentioning

confidence: 99%

Performance Optimization by Nonparametric Histogram Estimation for Low Resolution in IMDD-OQAM-OFDM System

Huang

Liu

et al. 2018

IEEE Photonics J.

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In this paper, for the first time, we propose a nonparametric histogram estimation (NPHE) scheme for the nonuniform quantization in intensity modulated direct detection with filter bank multicarrier signal to improve system performance. By combining the NPHE scheme and the common nonlinear programming method, the distribution of offset quadrature amplitude modulation based optical orthogonal frequency division multiplexing (OQAM-OFDM) signal is accurately estimated and then it is used to achieve the optimal nonuniform quantization level. In this way, the low-level signal can achieve much more effective digitalizing bits, thereby significantly reducing the quantization noise. The numerical simulation and experiment with 10-Gb/s 16-order OQAM-OFDM signal over 20 km fiber are conducted to further verify the feasibility of our scheme. The results show that our scheme always outperforms the uniform quantization and Gaussian-like nonuniform schemes in terms of the signal to quantization noise ratio, error-vector-magnitudes, and bit error rate. Compared to the conventional method, our scheme also achieves received sensitivity improvement thereby improving the system power budget. So, it can support the low-bit resolution transmission in intensity modulated direct detection-based OQAM-OFDM system.

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Section: Introductionmentioning

confidence: 99%

Performance Optimization by Nonparametric Histogram Estimation for Low Resolution in IMDD-OQAM-OFDM System

Huang

Liu

et al. 2018

IEEE Photonics J.

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“…The PAPR reduction methods [19][20][21] are classified into three types: clipping, coding, and probability [22][23]. The clipping [24][25] is the simplest and most direct. However, the clipping method itself will introduce additional signal distortion [26], and it will degrade the system's BER performance.…”

mentioning

confidence: 99%

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

Vaigandla

Benita

2022

IJEER

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Orthogonal Frequency Division Multiplexing with Offset Quadrature Amplitude Modulation (OFDM/OQAM) signal has high peak-to-average power ratio (PAPR) problem. It not only affects the distortion in High Power Amplifier (HPA) but also results in bit error ratio (BER) degradation. In this paper an improved algorithm based on Clipping and Compressed Sensing (CS) is proposed. The transmitter uses clipping to reduce the PAPR and, the receiver uses an improved inverse model, to reduce the nonlinear distortion introduced by HPA and CS cancels the signal distortion introduced by clipping. Simulation results show that the proposed method not only significantly reduces the PAPR of OFDM/OQAM signals, but also effectively improves the BER performance of the system.

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Analysis of Peak‐to‐Average Power Ratio in OFDM Systems Using Cognitive Radio Technology

Udayakumar¹,

Palaniswamy²,

Ponnusamy

2020

Machine Learning and Cognitive Computing for Mobile Communications and Wireless Networks

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PAPR reduction for OQAM/OFDM signals using Optimized Iterative Clipping and Filtering technique

Cited by 9 publications

References 10 publications

Performance Optimization by Nonparametric Histogram Estimation for Low Resolution in IMDD-OQAM-OFDM System

Performance Optimization by Nonparametric Histogram Estimation for Low Resolution in IMDD-OQAM-OFDM System

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

Analysis of Peak‐to‐Average Power Ratio in OFDM Systems Using Cognitive Radio Technology

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