Results 51 to 60 of about 29,940 (236)
Optimization of the Crest Factor for Complex-Valued Multisine Signals [PDF]
Radioengineering, 2023 Multisine signals are commonly used in the measurement of dynamic systems and wireless channels. For optimal measurements with a high dynamic range, a low Crest Factor (CF) excitation signal is required. In this paper, a modified approach to optimize the
B. Cseppento, A. Retzler, Z. Kollar
doaj
PAPR Reduction Scheme for OFDM
Procedia Technology, 2012 AbstractThis paper focused on peak to average power ratio (PAPR) reduction scheme for OFDM system. OFDM has several properties which make it an attractive modulation scheme for high speed transmission. the main draw back of OFDM is high PAPR. The high PAPR causes the interference and degraded the performance of the system while OFDM signal pass through
Bhad, Sandeep +2 more
openaire +1 more source
Space-Time Coded OFDM with Low PAPR [PDF]
EURASIP Journal on Advances in Signal Processing, 2006 Summary: Recently the use of multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems has been proposed for signaling over frequency-selective fading channels. Although various aspects of these systems have been considered in the literature, the problem of the inherent high peak-to-average power ratio (PAPR) is ...
Venkataraman, A. +2 more
openaire +4 more sources
Spectrally Compatible Deceptive Jamming Waveform Design for Synthetic Aperture Radar Countermeasures
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This paper focuses on the design of synthetic aperture radar (SAR) deceptive jamming waveforms with spectrum‐compatible capability. By using the synthesised jamming waveform, successful deception against the hostile SAR system is demonstrated by generating false targets with high fidelity in both range and azimuth.
Yuhao Chen +4 more
wiley +1 more source
PAPR Reduction in WiMAX System [PDF]
, 2013 Broadband Wireless Access (BWA) has emerged as a promising solution for last mile access technology to provide high speed internet access in the residential as well as small and medium sized enterprise sectors. At this moment, cable and DSL technologies are providing broadband service in these sectors.
Shokair, Mona, Sakran, Hifzalla
openaire +3 more sources
ETRI Journal, 2020 Noncontiguous orthogonal frequency division multiplexing (NC‐OFDM)‐based cognitive radio (CR) systems achieve highly efficient spectrum utilization by transmitting unlicensed users' data on subcarriers of licensed users’ data when they are free. However,
Sravan Kumar Kaliki +2 more
doaj +1 more source
Design and Optimization of Finite Alphabet Waveforms for Multiple‐Antenna Radar Covariance Matching
IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.This article propose a novel method for finite‐alphabet waveform generation based on constrained matrix decomposition. It also expands theoretical feasibility bounds for generating covariance matrices with binary waveforms, proves that matrices from autoregressive processes are always realizable and introduces an optimal adjustment procedure for ...
Karim Saifullin +2 more
wiley +1 more source
PSO Algorithm on PAPR Reduction Performance of Asymmetrically Clipped Optical‐OFDM
Applied Computational Intelligence and Soft Computing, Volume 2026, Issue 1, 2026.This research presents a novel hybrid optimization framework combining artificial neural networks (ANN) and particle swarm optimization (PSO) to mitigate the high peak‐to‐average power ratio (PAPR) in asymmetrically clipped optical‐orthogonal frequency division multiplexing (ACO‐OFDM) systems. While conventional PTS effectively reduces PAPR, it suffers
Hermansyah Alam +5 more
wiley +1 more source
Beam Domain MIMO-OFDM Optical Wireless Communications With PAPR Reduction
IEEE Photonics Journal, 2023 Multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM), confirmed as an efficient technique, has been applied in optical wireless communications (OWCs) to improve the transmission rate.
Chen Sun +5 more
doaj +1 more source
Coherent Optical DFT-Spread OFDM
, 2011 We consider application of the discrete Fourier transform-spread orthogonal frequency-division multiplexing (DFT-spread OFDM) technique to high-speed fiber optic communications.
Wang, Fanggang, Wang, Xiaodong
core +2 more sources