Results 21 to 30 of about 241 (175)
A review of Peak to Average Power Ratio Reduction Schemes in OFDM Systems [PDF]
Kirkuk Journal of Science, 2022 This paper is concerned with the Orthogonal Frequency Division Multiplexing (OFDM) system that is adopted by a wireless communication system for transmitting multicarrier modulated signals simultaneously with robustness against interference and noise ...
Bana Shekh Faraj, Abdulrahman Siddiq
doaj +1 more source
PAPR reduction technique for FBMC based visible light communication systems
IET Communications, Volume 16, Issue 15, Page 1807-1814, September 2022., 2022 Abstract One of the critical challenges in multicarrier‐based systems is peak to average power ratio (PAPR). Recently, Filter Bank Multicarrier (FBMC) is proved to be a promising candidate that can replace the traditional orthogonal multiplexing division (OFDM) scheme due to its better spectral efficiency, reducing both inter‐channel interference (ICI)
Gerges M. Salama +7 more
wiley +1 more source
PAPR reduction of OFDM systems using H‐SLM method with a multiplierless IFFT/FFT technique
ETRI Journal, Volume 44, Issue 3, Page 379-388, June 2022., 2022 Abstract This study proposes a novel low‐complexity algorithm for computing inverse fast Fourier transform (IFFT)/fast Fourier transform (FFT) operations in binary phase shift keying‐modulated orthogonal frequency division multiplexing (OFDM) communication systems without requiring any twiddle factor multiplications.
Namitha A. Sivadas
wiley +1 more source
State solutions for distribution systems and switching event using a neural network
IET Generation, Transmission &Distribution, Volume 16, Issue 1, Page 71-83, January 2022., 2022 Abstract Power flow calculations are an essential stage in many planning and control applications for distribution systems.To use these in control applications, however, the calculation time needs to be improved, and this can be done by the use of a trained ANN.
Arbel Yaniv +3 more
wiley +1 more source
IET Radar, Sonar &Navigation, Volume 15, Issue 2, Page 128-142, February 2021., 2021 Abstract The Doppler mismatch, range migration and Doppler frequency migration (DFM) correction problem for realizing the long‐time coherent integration of space moving target with high‐speed manoeuvring performance in passive bistatic radar is considered.
Luo Zuo, Jun Wang, Jinxin Sui
wiley +1 more source
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 In this paper, we consider the opportunities and constraints, which rest on quantization as a guiding principle for data representation and compression. In particular, we propose a novel model of Symmetric Quantile Quantizer (SQQ) and we describe in detail its parameterization. We suggest a simple method for offline precalculation of its parameters and
Zoran Perić +4 more
wiley +1 more source
A Hybrid Approach to Reduce the PAPR of OFDM Signals Using Clipping and Companding
IEEE Access, 2020 Orthogonal frequency division multiplexing (OFDM) is an important technology that has been widely used in broadband wireless communications. However OFDM has some drawbacks, one of which is the high peak-to-average power ratio (PAPR) problem.
Bo Tang, Kaiyu Qin, Haibo Mei
doaj +1 more source
A Novel Companding Technique to Reduce High Peak to Average Power Ratio in OFDM Systems
IEEE Access, 2021 The reduction of the high peak-to-average-power ratio (PAPR) is important to the efficiency of the orthogonal frequency division multiplexing (OFDM) technique.
Abdulwahid Mohammed +3 more
doaj +1 more source
Frontiers in Computer Science, 2020 This paper examines the effects of reduced speech bandwidth and the μ-low companding procedure used in transmission systems on the accuracy of speech emotion recognition (SER).
Margaret Lech +3 more
doaj +1 more source
Low complexity hybrid SLM for PAPR mitigation for ACO OFDM
ICT Express, 2022 The high peak to average power ratio (PAPR) is the main challenge facing asymmetrically clipped optical (ACO) orthogonal frequency division multiplexing (OFDM).
Roland Niwareeba +2 more
doaj +1 more source