A PAPR reduction technique using Hadamard transform combined with clipping and filtering based on DCT/IDCT for IM/DD optical OFDM systems

Mangone, Fall; He, Jing; Tang, Jin; Xiao, Jiangnan; Chen, Ming; Li, Fan; Chen, Lin

doi:10.1016/j.yofte.2014.04.008

Cited by 14 publications

(4 citation statements)

References 17 publications

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“…Then, they are converted from serial to parallel form using the serial-toparallel (S/P) converter in order to be sent through the roadside antennas. At this moment, the resulted sequence is defined as The DCT/IDCT transform is employed in this model [22,36,38]. Similar to other transformation methods, the DCT relies on a sum of cosine function that is fluctuating at different frequencies to define a finite sequence of data points.…”

Section: B Zadoff-chu Sequence Pre-codingmentioning

confidence: 99%

Controlling High PAPR in Vehicular OFDM-MIMO using Downlink Optimization Model under DCT Transform

Ali¹,

Eldesouky²

2019

IJACSA

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The persisting challenges of the radio channel in vehicular networks entail the use of multi-antennas which is known as Multiple-Input Multiple-Output (MIMO). In order to obtain an efficient multi-user MIMO system, the power of the radio frequency (RF) components should be optimized. Necessarily practical solutions are essential to lower the vehicular nodes' complexity and support a robust Orthogonal Frequency Division Multiplexing (OFDM) discipline with a simplified equalization at the receiver. In this paper, the pre-coding Zadoff-Chu Sequence (ZCS) is employed along with the Discrete Cosine Transform (DCT) to control and optimize the high peak power. It intends the transmission over multi-user MIMO downlink vehicular channels. At last, the convex optimization is utilized to guarantee the peak-to-average power ratio (PAPR) minimization. Simulation results have shown that the proposed model can lessen the high PAPR compared to the least-square pre-coding. At the same time, it proved its effectiveness and accuracy as it enhances the transmission quality over multi-user MIMO-OFDM downlink vehicular channel.

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Section: B Zadoff-chu Sequence Pre-codingmentioning

confidence: 99%

Controlling High PAPR in Vehicular OFDM-MIMO using Downlink Optimization Model under DCT Transform

Ali¹,

Eldesouky²

2019

IJACSA

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“…Reduction of PAPR simply shows the probabilities that the "PAPR" of data block exceeds the given threshold value [11]. The expression of the CCDF is:…”

Section: Peaks-to-average Power Ratio (Papr)mentioning

confidence: 99%

“…An OOFDM signal features a massive PAPR that is terribly sensitive to the non-linearity of the high peak [3]. Blocks of the symbol in the "OFDM" are selected with every symbol modulating one from a set of subcarriers and these subcarriers are recognized to be orthogonal [11].…”

Section: Introductionmentioning

confidence: 99%

Mitigate PAPR Effect in Optical Orthogonal Frequency Division Multiplexing Using Companding Technique

2018

IJCCCE

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orthogonal frequency division multiplexing (OFDM) is emerging as the leading technology for high data rates. The OFDM based on multicarrier transmission that transforms a wideband channel into a group of thin-band channels. The high peak to average power ratio (PAPR) considers the main drawback factor in this system, so the companding technique modifies the amplitude of OFDM signal to reduce this factor. The proposed A-law companding technique has been implemented in intensity modulation/direct detection optical orthogonal frequency division multiplexing (IM/DDOOFDM). The proposed companding scheme guarantees the improved performance in terms of bit error rate (BER) and quality factor (QF) while reducing PAPR effectively and efficiently by modifying the amplitude of the transmitted signals. Our results confirm that the suggested scheme exhibits a good ability to reduce PAPR and a good BER performance based on the use the A factor. At the complementary cumulative distribution function (CCDF) of 10- 3, the PAPR value of our proposed scheme is about 4.4 dB lower than those of un-companded signal at best control factor used of A at 87.6, accordingly the QF is 2.5 dB and the BER is 6.2×10-3 at a distance 900km without any equalization technique or training sequence or any channel estimation.

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“…In addition, high PAPR also leads the transmission system to be more susceptible to nonlinear impairments and therefore considerably degrades the transmission performance. A large diversity of PAPR reduction methods have been proposed, such as clipping [26], selective mapping (SLM) [27]- [29], companding transformation coding [30] and discrete Fourier transform (DFT) spreading [31]- [34]. Especially, for the most promise candidate waveform for the nextgeneration network, researchers are extensive investigating new types of FBMC with low PAPR [35]- [37].…”

Section: Introductionmentioning

confidence: 99%

SSB Pruned DFT-Spread FBMC Signal With Low PAPR in Direct-Detection PONs

et al. 2020

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Filter bank multi-carrier (FBMC) using offset quadrature amplitude modulation (OQAM) has recently attracted increasing interests for the next-generation high-speed optical transmission systems, due to the salient FBMC modulation advantages in terms of high spectrum efficiency by completely removing the cyclic prefix. However, high peak-toaverage power ratio (PAPR) still plays a key role of constraining the performance of FBMC systems. In this paper, we investigate a single sideband (SSB) pruned discrete Fourier transform (DFT)-spread FBMC for direct-detection (DD) passive optical network systems (PONs). It is demonstrated that the PAPR of the SSB pruned DFT-spread FBMC signal with the overlapping factor of 1.56 outperforms the conventional FBMC signal and the simple DFT-spread FBMC signal by ∼2 dB and 1 dB at the complementary cumulative distribution function (CCDF) of 1 × 10 −3 , respectively. Finally, by using the pruned DFT-spread FBMC with low PAPR, the aggregate data rate of 50-Gbit/s can be achieved after 50-km single mode fiber (SMF) transmission below the 7% hard decision forward-error correction (HD-FEC) threshold in the DD PONs.

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A PAPR reduction technique using Hadamard transform combined with clipping and filtering based on DCT/IDCT for IM/DD optical OFDM systems

Cited by 14 publications

References 17 publications

Controlling High PAPR in Vehicular OFDM-MIMO using Downlink Optimization Model under DCT Transform

Controlling High PAPR in Vehicular OFDM-MIMO using Downlink Optimization Model under DCT Transform

Mitigate PAPR Effect in Optical Orthogonal Frequency Division Multiplexing Using Companding Technique

SSB Pruned DFT-Spread FBMC Signal With Low PAPR in Direct-Detection PONs

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