Block Allocation Strategy for Multiple Input Multiple Output (MIMO)–Orthogonal Frequency Division Multiple Access (OFDMA) System

Benita, J.; Jayaparvathy, R.

doi:10.1007/s11277-018-5641-5

Cited by 5 publications

(1 citation statement)

References 9 publications

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“…This method makes use of clipping and filtering techniques. In order to lower the possibility of a high PAPR, the probabilistic(scrambling) approach scrambles an input data block of OFDM symbols and transmits one of them with the lowest PAPR possible [16][17]. Although it is not affected by OoB power, the complexity and spectral efficiency both decline as the number of subcarriers rises.…”

Section: Peak To Average Power Ratio (Papr): Methodsmentioning

confidence: 99%

Performance Analysis of PAPR minimization in OFDM System Using Clipping, SLM and PTS Techniques

Venkateswarlu¹,

Sravanya²,

Nyalapogula³

et al. 2023

IJRISE

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In wireless communications, Orthogonal Frequency Division Multiplexing (OFDM) is a method of modulating multicarrier signals to transmit high speed data. OFDM systems use multiple subcarriers to transmit the modulated symbols. There is a high peak to average power ratio (PAPR) in OFDM. PAPR can be reduced by using various methods. Different PAPR minimization techniques, like clipping, selective mapping (SLM) and partial transmit sequence (PTS) are presented in this project. This paper also focuses on Bit Error Rate (BER) and Signal to Noise Ratio (SNR) relative performance. A significant reduction in the PAPR and computational complexity can be seen from the results. The purpose of this study is to compare the results of an analysis recommended for PAPR reduction methods.

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Section: Peak To Average Power Ratio (Papr): Methodsmentioning

confidence: 99%

Performance Analysis of PAPR minimization in OFDM System Using Clipping, SLM and PTS Techniques

Venkateswarlu¹,

Sravanya²,

Nyalapogula³

et al. 2023

IJRISE

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PAPR Reduction of OFDM with DFT Spreading Method

Sravanya¹,

Sairam²,

Srinika³

2022

JTCSST

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Future communication systems will demand the transmission of huge amounts of data, therefore will require a highly linear power amplifier. The Orthogonal Frequency Division Multiplexing (OFDM) technique is widely used in multimedia services for providing high data rates and providing high Quality of Service. The transmitter power amplifier's range of operation in a communication system is linear. Signal distortion happens when the input signal's amplitude exceeds the linear range of the transmitter power amplifier. Therefore, the transmitter's input signal has to have a low peak to average power ratio (PAPR). The OFDM system has been recognized as the high rate wireless radio channel transmission. Therefore, it will also be highly beneficial for the high-speed communication system. However, due to the extremely high PAPR issue, using the OFDM system in a communication system is not simple. It results in extremely low power efficiency. Therefore, it is crucial to lower the PAPR in the OFDM system in order to employ it in the communication system. By using a discrete Fourier matrix, the Discrete Fourier Transform spreading strategy may significantly lower the PAPR of an OFDM signal. This paper describes the PAPR reduction approach in OFDM signals and examines the effectiveness of OFDM.

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PAPR and BER performance of OFDM with Various Modulation Methods under AWGN Channel

K¹,

Rachana²,

Ushasri³

et al. 2023

JUCCT

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The Orthogonal Frequency Division Multiplexing (OFDM) is also known as multicarrier technology. Wideband digital communications in the recent past have increasingly utilized OFDM. It can withstand difficult channel circumstances, efficiently utilize spectrum resources, decrease ISI, and operate at a high data rate, among many other benefits. It has been used in several wireless and wired communication systems, including fourth generation Long-Term Evolution (4G LTE) mobile communications. The performance assessment and analysis of the OFDM system under Additive White Gaussian Noise (AWGN) channel has been carried out in this work. The factors in which system performance is assessed include the signal quality, Bit Error Rates (BERs), and Signal to Noise Ratios (SNRs) of the received signals. To improve performance while employing multicarrier modulation, the subcarriers must be kept orthogonal to one another, in the process known as OFDM. The sole focus of this study is the performance analysis of PAPR, BER, and SNR utilizing various modulation methods and schemes.

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Block Allocation Strategy for Multiple Input Multiple Output (MIMO)–Orthogonal Frequency Division Multiple Access (OFDMA) System

Cited by 5 publications

References 9 publications

Performance Analysis of PAPR minimization in OFDM System Using Clipping, SLM and PTS Techniques

Performance Analysis of PAPR minimization in OFDM System Using Clipping, SLM and PTS Techniques

PAPR Reduction of OFDM with DFT Spreading Method

PAPR and BER performance of OFDM with Various Modulation Methods under AWGN Channel

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