Results 61 to 70 of about 44,063 (255)
Advanced Materials Technologies, Volume 11, Issue 1, 8 January 2026.The feasibility of 3D‐printed optical antennas using commercial, non‐optical materials for Optical Wireless Communications (OWC) is demonstrated. This study combines spectral analysis, anisotropy effects, and telecom‐relevant optical measurements, revealing promising performance and novel insights for low‐cost, customizable photonic components in ...
Mauro Aresti +6 more
wiley +1 more source
Journal of Computing Research and Innovation, 2018 Noise reduction in audio is a process of minimizing the presence of noise in the audio signal. Noise reduction approach helps user understand how to remove noise from the signal.
Zulfikri Paidi, Nurhasyimah Idrus
doaj
Optimal Worst-Case QoS Routing in Constrained AWGN Channel Network [PDF]
, 2007 In this paper, we extend the optimal worst-case QoS routing algorithm and metric definition given in [1]. We prove that in addition to the q-ary symmetric and q-ary erasure channel model, the necessary and sufficient conditions defined in [2] for the ...
McEliece, Robert J., Soedarmadji, Edwin
core +1 more source
Engineering Reports, Volume 8, Issue 1, January 2026.This workflow presents a complete pipeline for audio data processing, beginning with format conversion, channel adjustments, and cleaning, followed by enhancement and visualization techniques. It further applies signal separation using FastICA, postprocessing, and evaluation metrics (SDR, SIR, SAR) to improve audio analysis and support future research ...
Md. Razu Ahmed +3 more
wiley +1 more source
Artificial Bias Induction in Fourth-Order Cumulants Based Automatic Modulation Classification Algorithm in AWGN and Multipath Propagation Channel [PDF]
RadioengineeringAutomatic modulation classification (AMC) represents a wide used technique for modulation format recognition of signals considered to be a priori unknown.
R. Bozovic, V. Orlic, G. Kekovic
doaj
Source Broadcasting to the Masses: Separation has a Bounded Loss
, 2014 This work discusses the source broadcasting problem, i.e. transmitting a source to many receivers via a broadcast channel. The optimal rate-distortion region for this problem is unknown.
Feder, Meir, Mendlovic, Uri
core +1 more source
TranQuiL: Long Range Detection and Localization of Interference in Radio Quiet Zones
Radio Science, Volume 61, Issue 1, January 2026.Abstract Radio Quiet Zones (RQZs) have been established to prevent radio sources from causing harmful interference to sensitive radio telescopes, which study extremely faint cosmic radio waves. Even with strict regulations, such interference is growing due to the widespread use of consumer electronics, emitting in many different frequency bands ...
Atul Bansal +5 more
wiley +1 more source
Performance degradation due to multipath noise for narrowband OFDM systems: channel-based analysis and experimental determination [PDF]
, 2015 The performance of OFDM systems over a multipath channel can strongly degrade due to the propagation delay spread. The distortion of the received signal over the fast Fourier transform window is referred to as multipath noise.
Heereman, Frédéric +4 more
core +2 more sources
A Massive Grant‐Free Random Access Scheme Based on Spectrum Sensing and Preamble Delay
IET Communications, Volume 20, Issue 1, January/December 2026.This paper introduces cognitive radio (CR) and preamble delay (PD) to reduce access collisions, together with non‐orthogonal multiple access (NOMA) to improve spectrum efficiency, and thus proposes an efficient CR‐NOMA‐PD‐based massive grant‐free random multiple access scheme.
Jing Zhang +5 more
wiley +1 more source
Peak-to-average power ratio of good codes for Gaussian channel [PDF]
, 2014 Consider a problem of forward error-correction for the additive white Gaussian noise (AWGN) channel. For finite blocklength codes the backoff from the channel capacity is inversely proportional to the square root of the blocklength.
Polyanskiy, Yury, Wu, Yihong
core +2 more sources