Proceedings ArticleDOI
A Low Complexity SLM Technique for PAPR Reduction in OFDM Using Riemann Sequence and Thresholding of Power Amplifier
Mohit Chandwani,Arjun Singhal,Naga VishnuKanth I,Vijay Kumar Chakka +3 more
- pp 1-4
TLDR
In this article, Riemann sequences are used as a phase vectors along with the thresholding of the power amplifier(PA) to reduce the computational complexity of the selected mapping (SLM) technique.Abstract:
Selected Mapping (SLM) technique is one of the promising PAPR reduction techniques for Orthogonal Frequency Division Multiplexing (OFDM). But this reduction technique results in a huge amount of computation complexity which is costly and time consuming. In this paper, Riemann sequences are used as a phase vectors along with the thresholding of the power amplifier(PA). The default index of the phase sequence is used to reduce the computational complexity of SLM technique. The default index of a phase sequence refers to the starting index for the phase vectors in the SLM scheme. This index is derived from the experimentation results. The Matlab simulations show that the complexity has been reduced by 98 percent if the threshold value of PA is around 3.0dB. Index Terms—OFDM, PAPR, Complexity, Riemann Sequence, Error function, Default Index.read more
Citations
More filters
Journal ArticleDOI
Performance enhancement of ACO-OFDM-based VLC systems using a hybrid autoencoder scheme
TL;DR: Simulation results show that the hybrid autoencoder method achieves a distinct PAPR reduction of about 12 dB and is more robustness to LED nonlinearities leading to better BER performance compared to the standard methods.
Proceedings ArticleDOI
Peak to Average Power Ratio (PAPR) reduction in OFDM for a WLAN network using SLM technique
TL;DR: This paper analyzes the capability of the existing SLM technique in reducing the effect of Peak-to-Average Power Ratio and studies the probability that the PAPR of an OFDM data block exceeds a given threshold, which is the Complementary Cumulative Distribution Function (CCDF) of P APR.
Journal Article
SLM Using Riemann Sequence Combined with DCT Transform for PAPR Reduction in OFDM Communication Systems
TL;DR: An effective reduction scheme that combi nes DCT and SLM techniques using the Riemann matrix to obtain phase se quences for the SLM technique and simulation results show PAPR can be greatly reduced by applying the proposed scheme.
Dissertation
Receiver Design for Nonlinearly Distorted OFDM Signals: Applications in Radio-over-Fiber Systems
TL;DR: Tese de doutoramento. Faculdade de Engenharia. Universidade do Porto, Portugal as discussed by the authors, 2011. André et al., 2011.
Journal ArticleDOI
A computationally efficient selected mapping technique for reducing PAPR of OFDM
TL;DR: Using Riemann sequence based SLM method, reverse searching technique is applied to find out low PAPR yielding phase sequences with significant reduction in computational complexity and proposed application of Square-rooting companding technique over the output OFDM transmitted signal is successful.
References
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Journal ArticleDOI
An overview of peak-to-average power ratio reduction techniques for multicarrier transmission
Seung Hee Han,Jae Hong Lee +1 more
TL;DR: Some of the important PAPR reduction techniques for multicarrier transmission including amplitude clipping and filtering, coding, partial transmit sequence, selected mapping, interleaving, tone reservation, tone injection, and active constellation extension are described.
Journal ArticleDOI
Reducing the peak-to-average power ratio of multicarrier modulation by selected mapping
TL;DR: A method for the reduction of peak-to-average transmit power ratio of multicarrier modulation systems, called selected mapping, is presented, which is appropriate for a wide range of applications.
Journal ArticleDOI
OFDM and Its Wireless Applications: A Survey
TL;DR: This paper addresses basic OFDM and related modulations, as well as techniques to improve the performance of OFDM for wireless communications, including channel estimation and signal detection, time- and frequency-offset estimation and correction, peak-to-average power ratio reduction, and multiple-input-multiple-output (MIMO) techniques.
Journal ArticleDOI
A new SLM OFDM scheme with low complexity for PAPR reduction
TL;DR: The authors introduce a new selected mapping (SLM) orthogonal frequency division multiplexing (OFDM) scheme with low computational complexity, while it shows almost the same performance of PAPR reduction as that of the conventional SLM OFDM scheme.
Journal ArticleDOI
A Modified SLM Scheme With Low Complexity for PAPR Reduction of OFDM Systems
TL;DR: A new peak-to-average power ratio (PAPR) reduction scheme of orthogonal frequency division multiplexing (OFDM) system is proposed, called a modified selected mapping (SLM) scheme, which considerably reduces the computational complexity with keeping the similar PAPR reduction performance compared with the conventional SLM scheme.
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