Results 31 to 40 of about 322 (180)
The Journal of Engineering, Volume 2019, Issue 5, Page 3460-3468, May 2019., 2019 Partial transmit sequence (PTS) is one of the effective techniques for reducing the peak‐to‐average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. PTS technique has some issues such as higher computational complexity due to its exhaustive searching of optimal phase factors.
Sanjana Prasad, Ramesh Jayabalan
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A companding approach for nonuniform quantization of digital holograms of three-dimensional objects [PDF]
, 2006 We apply two novel nonuniform quantization techniques to digital holograms of three-dimensional real-world objects. Our companding approach, combines the efficiency of uniform quantization with the improved performance of nonuniform quantization. We show
Shortt, Alison +2 more
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Journal of Computer Networks and Communications, Volume 2019, Issue 1, 2019., 2019 Orthogonal frequency division multiplexing (OFDM) is the highly spectrally well‐organized method that has the difficulty of excessive peak power to average power ratio (PAPR), which ultimately imposes constraints on the high‐power amplifier. Many practices have been projected to lessen PAPR of the OFDM systems.
Prabal Gupta +5 more
wiley +1 more source
Comparison of Companding based PAPR Techniques for OFDM Systems [PDF]
International Journal of Computer Applications, 2013 LTE has utilized the OFDMA for the downlink which provides spectrum flexibility, inherent resistance to Inter symbol Interference (ISI) and many more. However 3GPP LTE systems suffer from a very common problem known as Peak to Average Power ratio. The present paper tried to discuss the companding based techniques for single user OFDMA systems.
R. K. Mehrotra, Eshaan Verma
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Enhancing PAPR reduction for FBMC-OQAM systems by joint both tone reservation and companding methods
, 2021 As all multi-carrier designs FBMC-OQAM signal suffers from large peak-toaverage power ratio (PAPR). There are divers PAPR reduction methods to solve this problem. Tone reservation (TR) scheme is one of the most famous PAPR reduction techniques in which a
Bendimerad, Yassine Mohammed +3 more
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Journal of Electrical and Computer Engineering, Volume 2018, Issue 1, 2018., 2018 A data clipping and normalization technique is employed to improve the performance of the overall direct detection optical orthogonal frequency division multiplexing (DCO‐OFDM) system. A detailed analysis of clipping distortion introduced by digital clipping and normalization is provided. The normalization operation amplifies the clipped data signal to
Jiang Wu, Zhongpeng Wang, Jit S. Mandeep
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An Enhanced Nonlinear Companding Scheme for Reducing PAPR of OFDM Systems [PDF]
, 2018 A new companding scheme for reducing the peak-to-average power ratio (PAPR) of orthogonal frequency-division multiplexing (OFDM) systems is proposed in this study.
Adebisi, Bamidele +2 more
core +1 more source
Advances in Condensed Matter Physics, Volume 2018, Issue 1, 2018., 2018 Light‐emitting diode‐ (LED‐) based visible light communication (VLC) has become a potential candidate for next generation high‐speed indoor wireless communication. Due to the limited modulation bandwidth of the LED, orthogonal frequency division multiplexing (OFDM) modulation is particularly preferred in the VLC system to overcome the ISI, which ...
Xinyue Guo +3 more
wiley +1 more source
Wireless Communications and Mobile Computing, Volume 2018, Issue 1, 2018., 2018 This study proposes an iterative, joint channel estimation, equalization, and data detection method in the presence of high mobility for a multicarrier downlink system that communicates over rapidly time‐varying channels. The proposed method uses a basis expansion method (BEM) which has low computational complexity and helps to reduce the number of ...
Nihat Kabaoglu +3 more
wiley +1 more source
IET Communications, Volume 19, Issue 1, January/December 2025.This article proposes a hybrid SLM+PTS+RNN algorithm to mitigate the high PAPR challenge in UFMC systems for B5G networks. The method significantly improves power efficiency (by 30%–40%) while maintaining BER and PSD performance, outperforming traditional PAPR reduction techniques.
Arun Kumar +2 more
wiley +1 more source