A Novel Hybrid Precoding-Companding Technique for Peak-to-Average Power Ratio Reduction in 5G and beyond

Mounir, Mohamed; Mashade, Mohamed B. El; Berra, Salah; Gaba, Gurjot Singh; Masud, Mehedi

doi:10.3390/s21041410

Cited by 24 publications

(13 citation statements)

References 45 publications

(122 reference statements)

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“…The addition reversed FBMC has no RMs because the waveform is added to its original form. The RMs number in the case of companding technique is given by (𝑡 + 1)6𝑁, where t is the number of terms in Taylor series, which is sufficiently set to 5 [38]. The DCT precoding used in this paper is DCT-2 which has RMs equal to 3𝑁log2𝑁 + 𝑁 [39].…”

Section: Simulation Resultsmentioning

confidence: 99%

A complexity efficient PAPR reduction scheme for FBMC-based VLC systems

2024

Opto-Electronics Review

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Visible light communication based on a filter bank multicarrier holds enormous promise for optical wireless communication systems, due to its high-speed and unlicensed spectrum. Moreover, visible light communication techniques greatly impact communication links for small satellites like cube satellites, and pico/nano satellites, in addition to inter-satellite communications between different satellite types in different orbits. However, the transmitted visible signal via the filter bank multicarrier has a high amount of peak-toaverage power ratio, which results in severe distortion for a light emitting diode output. In this work, a scheme for enhancing the peak-to-average power ratio reduction amount is proposed. First, an algorithm based on generating two candidates signals with different peakto-average power ratio is suggested. The signal with the lowest ratio is selected and transmitted. Second, an alternate direct current-biased approach, which is referred to as the addition reversed method, is put forth to transform transmitted signal bipolar values into actual unipolar ones. The performance is assessed through a cumulative distribution function of peak-to-average power ratio, bit error rate, power spectral density, and computational complexity. The simulation results show that, compared to other schemes in literature, the proposed scheme attains a great peak-to-average power ratio reduction and improves the bit the error rate performance with minimum complexity overhead. The proposed approach achieved about 5 dB reduction amount compared to companding technique, 5.5 dB compared to discrete cosine transform precoding, and 8 dB compared to conventional direct current bias of an optical filter bank multicarrier. Thus, the proposed scheme reduces the complexity overhead by 15.7% and 55.55% over discrete cosine transform and companding techniques, respectively.

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Section: Simulation Resultsmentioning

confidence: 99%

A complexity efficient PAPR reduction scheme for FBMC-based VLC systems

2024

Opto-Electronics Review

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“…The overall architecture of the introduced MIMO FBMC/OQAM system with DCT precoding and non-linear mu-law companding is showing in Figure 1. It consists of OQAM preprocessing, DCT precoding, IFFT, polyphase filter bank, and mu-law companding followed by multiple antennas [10]. This system transmitting OQAM symbols instead of transmitting quadrature amplitude modulation (QAM) symbol.…”

Section: Proposed Methods 21 Mimo Fbmc/oqam Systemmentioning

confidence: 99%

Performance improvement on spectral efficiency and peak to avearge power reduction for 5G system

Kavitha

Raju²,

Pujali

2022

IJEECS

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<span>Filter bank multicarrier with offset quadrature amplitude modulation (FMBC/OQAM) system which can offer higher data rate 1 Gbps and improved bandwidth efficiency because of not require of cyclic prefix (CP) to avoid interference from the adjacent channels compared to fourth generation (4G) orthogonal frequency division multiplexing (OFDM) and other wireless systems. Because of these advantages FBMC/OQAM are used in fifth generation (5G) technology. In this FBMC/OQAM system, bandwidth capacity will be further increased by using multiple input multiple output (MIMO) channel. But in our proposed scheme we can use hyper–MIMO channel, in which at base station (BS) more number of transmitting antennas are used that for the improve the spectral efficiency performance better than traditional MIMO channel. But the most important drawback of hyper MIMO FBMC/OQAM is the higher peak to average-power ratio (PAPR) that degrade overall system performance in 5G. In 4G technology, to reduce PAPR a number of techniques are used. In our proposed system we can use mu-law non-linear companding technique and precoding discrete cosine transform (DCT) to reduce PAPR value for multicarrier modulation system compare to other systems.</span>

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“…In recent years, several detection algorithms such as Minimum Mean Square Error (MMSE), Zero Forcing Equalizer (ZFE), and Maximum Likelihood (ML) have been proposed. The ML is regarded as one of the most efficient detection methods [13]. However, it increases the complexity due to its comprehensive search characteristics.…”

Section: Literature Reviewmentioning

confidence: 99%

A Novel Approximate Message Passing Detection for Massive MIMO 5G System

Gour¹,

Pareek²,

Rajagopal³

et al. 2023

Computer Systems Science and Engineering

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Massive-Multiple Inputs and Multiple Outputs (M-MIMO) is considered as one of the standard techniques in improving the performance of Fifth Generation (5G) radio. 5G signal detection with low propagation delay and high throughput with minimum computational intricacy are some of the serious concerns in the deployment of 5G. The evaluation of 5G promises a high quality of service (QoS), a high data rate, low latency, and spectral efficiency, ensuring several applications that will improve the services in every sector. The existing detection techniques cannot be utilised in 5G and beyond 5G due to the high complexity issues in their implementation. In the proposed article, the Approximation Message Passing (AMP) is implemented and compared with the existing Minimum Mean Square Error (MMSE) and Message Passing Detector (MPD) algorithms. The outcomes of the work show that the performance of Bit Error Rate (BER) is improved with minimal complexity.

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A Novel Hybrid Precoding-Companding Technique for Peak-to-Average Power Ratio Reduction in 5G and beyond

Cited by 24 publications

References 45 publications

A complexity efficient PAPR reduction scheme for FBMC-based VLC systems

A complexity efficient PAPR reduction scheme for FBMC-based VLC systems

Performance improvement on spectral efficiency and peak to avearge power reduction for 5G system

A Novel Approximate Message Passing Detection for Massive MIMO 5G System

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