Results 21 to 30 of about 275 (168)
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 New Linear Companding Transform to Reduce the PAPR in OFDM System under Rayleigh Distribution
, 2021 Large amplitude fluctuations causeserious issues in orthogonal frequency-division multiplexing (OFDM) signals, when a nonlinear power amplifier (NLPA) has been utilized.
Dr. Gopala Krishnan, Venkatesh Thota
core +1 more source
Efficient PAPR Reduction in OFDM Signals Using Linear Companding Transform with Inflection Points
, 2023 Large amplitude fluctuations cause serious issues in orthogonal frequency-division multiplexing (OFDM) signals when a nonlinear power amplifier (NLPA) has been utilized.
C. V. Shilpa, P. Indira Kumari, Ch. Sushmitha Rani
core +1 more source
PTS and Companding Transform for PAPR Reduction in OFDM
International Journal of Computer Applications, 2013 A combined model of Partial Transmit Sequence (PTS) and a Companding Transform is proposed to reduce Peak-toAverage Power Ratio (PAPR) in Orthogonal Frequency Division Multiplexing (OFDM). Simulation results demonstrate that the proposed scheme can substantially offer better PAPR reduction and BER performance.
Abhishek Sharma, Roopam Pawar
openaire +1 more source
Walsh‐Hadamard‐transform‐based SC‐FDMA system using WARP hardware
ETRI Journal, 2021 Single‐carrier frequency division multiple access (SC‐FDMA) is currently being used in long‐term evolution uplink communications owing to its low peak‐to‐average power ratio (PAPR). This study proposes a new transceiver design for an SC‐FDMA system based
Shri Ramtej Kondamuri, Sundru Anuradha
doaj +1 more source
Research on Compressed Multiscale Retinex Image Enhancement Algorithms
Journal of Harbin University of Science and Technology, 2020 The Retinex algorithm for face image illumination compensation and color restoration is an effective one in the traditional image enhancement algorithm under the condition of low illumination The traditional MSRCR algorithm can still produce some ...
LIU Mingzhu, SU Taoyu, WANG Yining
doaj +1 more source
IEEE Access, 2019 Reliable wireless data transmission in intelligent transportation systems (ITS) has drawn a wide concern in recent years. As an efficient wireless transmission technology, multi-carrier communication (MCM) finds its way in many applications. However, the
Jun Hou +5 more
doaj +1 more source