Efficient PAPR Reduction Research Articles

Spectral and Energy Efficient Pilot-Assisted PAPR Reduction Technique for Underwater Wireless Optical Communication Systems

Spectral and Energy Efficient Pilot-Assisted PAPR Reduction Technique for Underwater Wireless Optical Communication Systems

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

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

Efficient Parallel PAPR Reduction Method Using Null-Constrained Peak Cancellation Signal for Massive MIMO-OFDM Systems

Efficient Parallel PAPR Reduction Method Using Null-Constrained Peak Cancellation Signal for Massive MIMO-OFDM Systems

Efficient PAPR Reduction Method for FBMC based Systems Using Isosceles Trapezoidal Distribution Transforms

In this paper, a new technique based on the Isosceles Trapezoidal Distribution Transform (ITDT) is proposed to reduce the PAPR of FBMC/OQAM transceiver by transforming original Gaussian distributed FBMC signals into an Isosceles Trapezoidal, while maintaining a constant evelope.

Performance Analysis of the Two-Piecewise Linear Companding Technique on Filtered-OFDM Systems

Filtered orthogonal frequency division multiplexing (F-OFDM) is one of the most prominent waveform candidates when it comes to fifth-generation (5G) wireless communication and beyond. This paper analyzes the performance of the F-OFDM system in terms of the peak-to-average power ratio (PAPR) and bit error rate (BER). The F-OFDM system exhibits a high PAPR, which introduces earnest deterioration in its performance. Consequently, an efficient PAPR-reduction technique has been recommended to reduce the effect of the high value of PAPR of the F-OFDM system. The prospective two-piecewise companding (TPWC) scheme effectively reduces the peak power by analyzing large and small amplitudes individually, so its outcome has both piecewise linear and continuous characteristics. The performances of different PAPR reduction techniques are compared in terms of PAPR complementary cumulative distribution functions and BERs. It is shown that the proposed TPWC transform can significantly reduce PAPR with reduced computational complexity compared with conventional companding techniques.

Performance Improvement of OFDM Systems by Reducing Papr using SLM-Grasshopper Optimization

Orthogonal Frequency Division Multiplexing (OFDM) is an emerging technology which is been most commonly used for transmission of data in wireless based systems. The OFDM technique is capable of achieving more speed i.e it has higher data rate transmission which is reliable and efficient. Peak power is the major drawback while transmitting the signal which is termed as PAPR. The signals achieves high peak value while transmitting due to the presence of large subcarriers which are independent in nature. The amplitude of the signal need to be reduced. Many PAPR reductions schemes have been presented in past and the reduction is done to some extents. In this paper , a new optimisation technique i.e grasshopper optimization (GOA) is proposed. The optimization technique is combined with one of the efficient PAPR reduction technique i.e selective mapping technique. The combination of SLM-Grasshopper help in reducing the PAPR as low as possible and is also compared with other techniques like SLM-GA, SLM-FA and SLM-GWO. The experimental results are performed using matlab.

New Efficient PAPR Reduction Schemes in LTE OFDM Systems

New Efficient PAPR Reduction Schemes in LTE OFDM Systems

Efficient PAPR Reduction Approach for Selective Mapping in a STBC MIMO-OFDM System

Efficient PAPR Reduction Approach for Selective Mapping in a STBC MIMO-OFDM System

PAPR Reduction in OFDM using Combination of Statistical Transformation Distribution and Selected Mapping Method

Orthogonal Frequency Division Multiplexing (OFDM) offers a high spectral efficiency, smooth operation and effectiveness against multipath fading as its modulation technique. This modulation technique advancement is to increase the number of subcarriers to enhance efficiency. Despite of the number of subcarriers increases, certain time domain OFDM coefficients are likely to acquire unwanted high magnitudes of PAPR. This high PAPR cause the limit of the transmitter power efficiency. Therefore, cause spectral to spread and reduce the bit-error-rate (BER) performance. In order to allay these potential performance problems, a computationally efficient and low cost PAPR reduction method were proposed. The new method presents a combination of Statistical Redistribution Method (SRM) with Selected Mapping Method (SLM). The proposed scheme takes advantage of Selected Mapping (SLM) followed by the companding SRM technique to amplify the reduction of the PAPR of the OFDM signal. Simulation results indicate that about 5 dB reduction in PAPR is achieved compared with the conventional SLM algorithm.