Results 41 to 50 of about 3,698 (177)

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, Sajid Ahmed, Mohamed‐Slim Alouini   +2 more
wiley   +1 more source

Joint 2‐D LFM Modulation and Mismatched Filter Design in Dual‐Function Radar‐Communication System

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
This paper proposes a joint 2‐D LFM modulation and mismatched filtering design for military‐grade dual‐function radar‐communication systems. The novel scheme modulates data onto both the initial frequency and chirp rate of LFM pulses, boosting data rates whilst preserving the constant‐envelope property critical for high‐power transmission.
Kehao Wang, Zixuan Zhang, Ke Zhang, Xiaobai Li, Wei Cheng, Tony Quek   +5 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, Anuar Mat Safar, Norizan Mohamed Nawawi, Mohd Nordin Junita, Aymen Abdalmunam Hameed, Ridha Ejbali   +5 more
wiley   +1 more source

Pilot‐Based Iterative Path Estimation and Maximum Ratio Combining (MRC)–Based Signal Detection of Orthogonal Time–Frequency Space (OTFS) Modulation for 6G in Fractional Doppler Channels

Journal of Computer Networks and Communications, Volume 2026, Issue 1, 2026.
The sixth generation (6G) wireless networks are used to provide a large coverage, and also this generation needed to support different emerging applications in harsh areas with higher user equipment mobility. For the above case, a new modulation technique called orthogonal time–frequency space (OTFS) modulation has emerged as a promising technique to ...
Ephrem Gelamite Demere, Zelalem Hailu Gebeyehu, Sohini Basu Roy   +2 more
wiley   +1 more source

Peak-to-average power ratio mitigation in quasi-orthogonal space time block coded MIMO-OFDM systems using selective mapping [PDF]

, 2008
A study of a peak-to-average power ratio (PAPR) reduction scheme for quasi-orthogonal spacetime block coded multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems based on selective mapping (SLM) is presented.
J. A. Chambers, F. S. Alharbi, Chambers, JA, Jonathon Chambers (1251609), Faisal S. Alharbi (7203962), Alharbi, FS   +5 more
core   +1 more source

Next‐Generation SIMO SC‐FDMA–DMWT Systems With Adaptive EGC: Performance Enhancement in Correlated LTE‐Advanced Channels

Journal of Control Science and Engineering, Volume 2026, Issue 1, 2026.
Given the explosive increase in mobile data traffic, the wireless communication system of today and beyond has to be able to offer both high spectral efficiency and energy efficiency (EE) under challenging propagation environments such as deep indoor, high‐speed mobility, or tunneling. This work presents an improved structure of doing SIMO SC‐FDMA–DMWT
Mohammed Aboud Kadhim, Zahraa Ibrahim Sabere, Ahmed A. Thabit, Deepali   +3 more
wiley   +1 more source

A Comprehensive Review of Battery‐Free Energy Efficient RF and Microwave Systems

Journal of Engineering, Volume 2026, Issue 1, 2026.
Battery‐free radiofrequency (RF) and microwave systems have emerged as a promising solution for enabling long‐lifetime, maintenance‐free wireless sensing and communication platforms by eliminating conventional battery dependence. These systems operate by harvesting ambient or dedicated electromagnetic energy, converting it to usable electrical power ...
Stella N. Arinze, Augustine O. Nwajana, Vijayanandh Raja   +2 more
wiley   +1 more source

Impact of reformed RM Encoded data on PAPR of Multicode CDMA under MSK

Sir Syed University Research Journal of Engineering and Technology, 2016
In this research work, the effect of Reformed Reed Muller Encoded Data (RRMED) on Peak to Average Power Ratio (PAPR) of Multicode Code Division Multiple Access (MC-CDMA) systems was studied under Minimum Shift Keying (MSK) modulation. Simulation studies
S. Rizwan-ul- Hasan, Najeeb Siddiqui, Shakil Ahmed   +2 more
doaj  

Genetic Algorithm‐Optimized Recurrent Neural Network for Channel Estimation in RIS‐Aided MIMO System With Rake Receiver

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The integration of reconfigurable intelligent surfaces (RIS) into multiple‐input multiple‐output (MIMO) systems offers transformative potential for enhancing spectral efficiency and mitigating channel impairments. However, efficient and accurate channel estimation (CE) remains a critical challenge due to multipath propagation, high dimensionality, and ...
Kevin M. Mwongera, Philip K. Langat, Franklin M. Manene, Pramita Mishra   +3 more
wiley   +1 more source

Comparing GFDM With OFDM for Use in 6G Communication From a New Perspective

Journal of Electrical and Computer Engineering, Volume 2026, Issue 1, 2026.
The most important challenges facing 6G communication systems are the large amount of data and low latency as compared to previous generations. Therefore, it has become necessary to use advanced technologies to meet the requirements of 6G wireless communication systems.
Mohammed Azher Therib, Saad Saffah Hreshee, Martin Haardt   +2 more
wiley   +1 more source