A modified Iterative Amplitude clipping and filtering technique for PAPR reduction in OFDM systems

Sharma, C.B.; Sharma, Pankaj; Tomar, Shiv Kumar; Gupta, Akshay

doi:10.1109/etncc.2011.6255922

Cited by 16 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So to have desired PAPR result ICF method employed many iterations. Figure 2 shows the ICF scheme of minimizing PAPR (Sharma et al, 2011;Zhu et al, 2013). Where 𝑐 0 is the original OFDM symbols and after processing 𝑐 (in the frequency domain) and 𝑥 (in the time domain) are OFDM symbols and m=1, 2….M denotes the number of iterations.…”

Section: Iterative Clipping and Filtering (Icf) Techniquementioning

confidence: 99%

PAPR Reduction an effective approach for next frontier MIMO-OFDM systems

Timande

Nigam²

2021

JER is an international, peer-reviewed journal that publishes f

View full text Add to dashboard Cite

The ‘Orthogonal frequency division multiplexing (OFDM)’ is a well-accepted and effective technology employed today and in future wireless communication systems. The combinations of OFDM and ‘multiple-input multiple-output (MIMO’) offer high quality of services and better throughput. The multicarrier OFDM system experiences a high ‘peak-to-average power ratio (PAPR’), which is the major issue in the OFDM scheme and must be truncated to achieve trustworthy communication. Due to high PAPR in a signal to be transmitted, the power amplifier in the transmitter section enters into saturation region and amplifies the signal nonlinearly, resulting in loss of orthogonality and ultimately in ‘inter-carrier interference (ICI)’. In this article, the 'iterative clipping and filtering (ICF)' method is proposed to minimize the PAPR in the OFDM system. The simulation is carried out using MATLAB (version 2014b). The result of the proposed ICF method and the ‘selective mapping (SLM)’ scheme is analyzed and compared. From the analysis, it is shown that the proposed ICF technique is more suitable for minimizing the PAPR effectively without affecting ‘bit error rates (BER)’ much and the simplicity of the system. The simulation result of the proposed ICF scheme using ‘Quadrature Phase Shift Keying (QPSK)’, FFT size of 128, and clipping and filtering level up to 6 shows that the proposed ICF scheme for clipping level of 6 reduces PAPR to 5dB. Also, the BER is minimized at the level of 3×10−5 at 12 dB SNR.

show abstract

Section: Iterative Clipping and Filtering (Icf) Techniquementioning

confidence: 99%

PAPR Reduction an effective approach for next frontier MIMO-OFDM systems

Timande

Nigam²

2021

JER is an international, peer-reviewed journal that publishes f

View full text Add to dashboard Cite

show abstract

“…It is defined as the ratio of clipping threshold (C th ) to the root mean square power level (P rms ) of the OFDM signal [3].…”

Section: Iterative Clipping and Filtering Techniquementioning

confidence: 99%

“…This method is based on amplitude clipping and filtering [1][2][3][4]. The steps of the proposed technique are follows as.…”

Section: Proposed Papr Reduction Techniquementioning

confidence: 99%

PAPR Reduction in OFDM System Using Iterative Clipping and Filtering Technique Along with Convolutional Code

Sahu

Veeramanju

2015

2015 Fifth International Conference on Communication Systems and Network Technologies

View full text Add to dashboard Cite

Orthogonal Frequency Division Multiplexing (OFDM) is widely used technique in high data rate wireless communication system. The major drawback of the OFDM system is large Peak to Average Power Ratio (PAPR) which can overweigh all the potential benefit of the OFDM system. Due to high PAPR, the power amplifier lead to saturation and generates inter modulation among the subcarriers. In this paper, we propose iterative clipping and filtering technique along with convolutional code that clipped the amplitude of the OFDM signal, which reduces the PAPR without much degradation in the bit error rate (BER). The reduction in amplitude variation by clipping creates distortion in the OFDM signal. Due to this distortion at the receiver end result higher BER. This BER performance is further improved by using convolutional code. MATLAB coding result shows that sharp drop on Complementary Cumulative Distribution Function (CCDF)Curve and reduced the PAPR.

show abstract

“…Many PAPR reduction methods have been proposed to address this issue. These include adaptive step size cognitive clipping [2], tone injection [3]- [5], iterative clipping and filtering (ICF) [6]- [9], coding [10]- [13], selected mapping [14]- [17] and partial transmit sequences [18]- [22]. Among these techniques, ICF technique is quite successful that requires no modification to the receiver structure.…”

Section: Introductionmentioning

confidence: 99%

A PAPR Reduction Method Based on Differential Evolution

Wang¹,

Xiao²

2015

jcm

View full text Add to dashboard Cite

High peak-to-average ratio power (PAPR) is a critical practical problem for an OFDM system. Many techniques, such as clipping and filtering (ICF), cognitive clipping, have been proposed to deal with the issue. However, it needs to determine the relationship between error vector magnitude (EVM) and clipping ratio (CR). In this paper, we formulate a universal PAPR optimization model with EVM constraint, and propose a differential evolution (DE) algorithm with a time complexity of 2 (log) O N N. The optimization parameter of the new approach is clipping noise. The EVM constraint guarantees proper receiver operation that is specified by most modern communication standards. The proposed DE algorithm employs the noise vector as the population. It adjusts three crucial control parameters to minimize cost function which is the amount of PAPR reduction. Simulation results show that our proposed method can offer good performance in PAPR and bit error rate (BER).

show abstract

A modified Iterative Amplitude clipping and filtering technique for PAPR reduction in OFDM systems

Cited by 16 publications

References 6 publications

PAPR Reduction an effective approach for next frontier MIMO-OFDM systems

PAPR Reduction an effective approach for next frontier MIMO-OFDM systems

PAPR Reduction in OFDM System Using Iterative Clipping and Filtering Technique Along with Convolutional Code

A PAPR Reduction Method Based on Differential Evolution

Contact Info

Product

Resources

About