Minimization of Peak-to-Average Power Ratio in DHT Precoded OFDM System by A-Law Companding

Yadav, Ajay Kumar; Dubey, Dheeraj; Prajapati, Yogendra Kumar

doi:10.1007/978-981-15-6840-4_51

Cited by 2 publications

(8 citation statements)

References 6 publications

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“…It requires many side information bits to inform the receiver with the position of data samples above or below the inflection point [ 10 ]. Recently, DHT-A introduced in [ 26 ] without comparison to any previous precoding-companding technique.…”

Section: Introductionmentioning

confidence: 99%

“…However, BER and OOB radiation are more important metrics than PAPR reduction gain when working with PAPR reduction techniques that cause BER degradation, such as companding techniques. Some works hybridized A-law companding [ 26 , 31 ] and

companding [ 23 ] with different precoding matrices. Although A-law and

companding techniques have PAPR reduction gain and BER performance worse than the

-law companding, as shown in [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, piecewise based companding techniques are impractical. Many precoding-companding techniques [ 26 , 29 , 31 , 36 , 37 ], are not compared with any previous works. HPA was neglected in the models [ 22 , 26 , 27 , 28 , 30 , 31 , 33 , 34 , 35 , 36 , 37 ], although HPA is the source of nonlinear distortion.…”

Section: Introductionmentioning

confidence: 99%

“… Many precoding-companding techniques [ 26 , 29 , 31 , 36 , 37 ], are not compared with any previous works. HPA was neglected in the models [ 22 , 26 , 27 , 28 , 30 , 31 , 33 , 34 , 35 , 36 , 37 ], although HPA is the source of nonlinear distortion. The authors in [ 22 , 26 , 28 , 30 , 31 , 34 , 36 , 37 ] have not considered Rayleigh channel.…”

Section: Introductionmentioning

confidence: 99%

“…Many precoding-companding techniques [ 26 , 29 , 31 , 36 , 37 ], are not compared with any previous works.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

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

Mounir

Mashade

Berra

et al. 2021

Sensors

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Several high-speed wireless systems use Orthogonal Frequency Division Multiplexing (OFDM) due to its advantages. 5G has adopted OFDM and is expected to be considered beyond 5G (B5G). Meanwhile, OFDM has a high Peak-to-Average Power Ratio (PAPR) problem. Hybridization between two PAPR reduction techniques gains the two techniques’ advantages. Hybrid precoding-companding techniques are attractive as they require small computational complexity to achieve high PAPR reduction gain. Many precoding-companding techniques were introduced to increasing the PAPR reduction gain. However, reducing Bit Error Rate (BER) and out-of-band (OOB) radiation are more significant than increasing PAPR reduction gain. This paper proposes a new precoding-companding technique to better reduce the BER and OOB radiation than previous precoding-companding techniques. Results showed that the proposed technique outperforms all previous precoding-companding techniques in BER enhancement and OOB radiation reduction. The proposed technique reduces the Error Vector Magnitude (EVM) by 15 dB compared with 10 dB for the best previous technique. Additionally, the proposed technique increases high power amplifier efficiency (HPA) by 11.4%, while the best previous technique increased HPA efficiency by 9.8%. Moreover, our proposal achieves PAPR reduction gain better than the most known powerful PAPR reduction technique with a 99% reduction in required computational complexity.

show abstract

Section: Introductionmentioning

confidence: 99%

companding [ 23 ] with different precoding matrices. Although A-law and

companding techniques have PAPR reduction gain and BER performance worse than the

-law companding, as shown in [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Many precoding-companding techniques [ 26 , 29 , 31 , 36 , 37 ], are not compared with any previous works.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Mounir

Mashade

Berra

et al. 2021

Sensors

View full text Add to dashboard Cite

show abstract

A combination of DST precoder and ICF based-methods for PAPR suppression in OFDM signal

Yadav

2024

Journal of Optical Communications

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One well-known demerit of orthogonal frequency division multiplexing (OFDM) is its high peak-to-average power ratio (PAPR) which limits the efficiency of high-power amplifier (HPA) and also destroys its bit error rate (BER) performance. Hence, a method based on grouping of discrete sine transform (DST) precoder and iterative clipping and filtering (ICF) is proposed to reduce PAPR in this article. The DST precoder reduces PAPR to certain level by changing phase of the signal. Moreover, the ICF technique is also implemented in DST based-OFDM signal for additional minimization of PAPR. Therefore, the proposed method (DST-ICF) preserves BER performance also from other existing methods. At complementary cumulative distribution function (CCDF) = 10−3, the simulation results indicate the proposed technique that minimizes PAPR with iteration values (I = 1, I = 2, and I = 3) to 6.37 dB, 5.29 dB, and 4.81 dB respectively. Moreover, at same BER, the E b /N 0 of proposed technique with iteration value (I = 3) is achieved by 9.75 dB for quadrature phase shift keying (QPSK).

show abstract

Minimization of Peak-to-Average Power Ratio in DHT Precoded OFDM System by A-Law Companding

Cited by 2 publications

References 6 publications

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

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

A combination of DST precoder and ICF based-methods for PAPR suppression in OFDM signal

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