Results 31 to 40 of about 9,710 (215)

Error rate analysis for indoor wireless networks [PDF]

open access: yes, 1992
An attempt is made to predict the maximum data rates for a typical wireless computer network operating in an indoor frequency-selective environment. To lower the error rates for high-speed data transmission, the impact of techniques such as diversity ...
McGeehan, JP, Nix, AR, Norton, GH
core   +2 more sources

PSO Algorithm on PAPR Reduction Performance of Asymmetrically Clipped Optical‐OFDM

open access: yesApplied 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

Comparative analysis of elementwise reception-algorithms in intersymbol interference channels

open access: yesФизика волновых процессов и радиотехнические системы
Background. Many modern communication-systems work on channels with intersymbol interference. Therefore comparative analysis of elementwise reception-algorithms is topical by work in such channels. Aim.
Eugene O. Khabarov   +1 more
doaj   +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

open access: yesJournal 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   +2 more
wiley   +1 more source

Tropospheric Propagation Effects Extracted From ADS‐B Messages

open access: yesEngineering Reports, Volume 7, Issue 12, December 2025.
This study explores the use of ADS‐B messages to estimate tropospheric effects, effectively isolating atmospheric influences from interference. The approach enables independent lower atmosphere studies and offers a cost‐free supplementary method for satellite applications, benefiting GNSS systems, especially at low elevation angles where multipath and ...
Alina‐Mihaela Badescu
wiley   +1 more source

Features of the construction of information transfer system which using two-dimensional signals [PDF]

open access: yesITM Web of Conferences, 2019
The article deals with analysis of the causes of intersymbol interference and interchannel interference. It is indicated that physically unrealizable orthogonal bases are used to describe systems and signals. The considered interference occurs due to the
Degtyaryov Andrey, Miryanova Vera
doaj   +1 more source

Modified Viterbi Algorithm with Feedback Using a Two-Dimensional 3-Way Generalized Partial Response Target for Bit-Patterned Media Recording Systems

open access: yesApplied Sciences, 2021
The ever-increasing demand for data in recent times has led to the emergence of big data and cloud data. The growth in these fields has necessitated that data be centrally stored in data centers.
Thien An Nguyen, Jaejin Lee
doaj   +1 more source

Enhancing FSO‐DWDM Performance Through Compensation Strategies

open access: yesEngineering Reports, Volume 7, Issue 12, December 2025.
This study investigates the performance of free space optics (FSO) with dense wavelength division multiplexing (DWDM) systems, focusing on the impact of channel number and compensation strategies on bit error rate (BER). Results show that post‐compensation significantly improves performance, extending the system's range from 3 to 5 km.
Ifat Rasheed   +4 more
wiley   +1 more source

Nonlinear Distortion Equalization in Multi‐Span Optical Links Via a Feed‐Forward Photonic Neural Network

open access: yesLaser &Photonics Reviews, Volume 19, Issue 23, December 3, 2025.
A feed‐forward photonic neural network equalizes linear and nonlinear impairments in multi‐span IMDD optical fiber transmission. The linear processing stage employs an 8‐tap optical Finite Impulse Response filter integrated on a silicon photonics platform, while the end‐of‐line photodetector represents the nonlinear stage.
Emiliano Staffoli   +3 more
wiley   +1 more source

Nyquist Filters with Alternative Balance between Time- and Frequency-Domain Parameters

open access: yesEURASIP Journal on Advances in Signal Processing, 2010
Designing matched pulse shaping filters with their cascade satisfying the Nyquist condition for minimum intersymbol interference constitutes an important task for almost all digital data radio transceivers processing an incoming data signal on the ...
Daněk Karel   +2 more
doaj  

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