Results 1 to 10 of about 144,701 (287)

Guard interval adaptation for in-home power line communication [PDF]

open access: yes2015 IEEE International Symposium on Power Line Communications and Its Applications (ISPLC), 2015
This paper aims to analyze the choice of the guard interval (GI) length in PLC systems to optimize the achievable throughput under power and symbol error-rate (SER) constraints. In general, the GI length is chosen so that there is no interference, i.e. the GI length is greater than or equal to the channel impulse response length. However, many previous
Vo, Thanh Nhân   +3 more
openaire   +6 more sources

Single Frequency Networks (SFN) in Digital Terrestrial Broadcasting [PDF]

open access: yesRadioengineering, 2007
The paper deals with principles and properties of single frequency networks of digital television and radio transmitters. Basic definitions and contextual relationships (guard interval, area of SFN, influence of used modulation parameters etc.) are ...
V. Ricny
doaj   +1 more source

Efficacy of Vector Guard®, a mosaic alpha-cypermethrin and piperonyl butoxide-treated net, for the control of pyrethroid-resistant malaria vectors: a non-inferiority experimental hut evaluation in Benin [PDF]

open access: yesParasites & Vectors
Background Insecticide-treated nets (ITNs) incorporating pyrethroids with piperonyl butoxide (PBO) have demonstrated enhanced effectiveness against malaria transmitted by pyrethroid-resistant vectors compared with standard pyrethroid-only ITNs.
Judicael Nounagnon   +5 more
doaj   +2 more sources

A new dynamic EDCA mechanism to improve VoIP services in 802.11ac networks [PDF]

open access: yesمجله مدل سازی در مهندسی, 2020
Due to real-time nature of multimedia data, the 802.11ac standard applies the EDCA method to prioritize different types of traffics. The EDCA method supports four different access categories each with its own queue so that the highest priority is ...
Mina Malekzadeh
doaj   +1 more source

Analisis Kinerja Sistem Televisi Digital Didasarkan Pada Standar International Telecomunication Union

open access: yesJurnal Jaringan Telekomunikasi, 2021
Penelitian ini bertujuan untuk mengetahui tentang pengaruh pemilihan dari nilai parameter DVB-T2 terhadap kinerja sistem. Parameter yang digunakan untuk yaitu parameter Bandwidth, FFT size, Guard Interval, dan Teknik Modulasi.
Jauhariyatul Fajriyah   +2 more
doaj   +1 more source

BER Reduction and Capacity Enhancement with Novel Guard Sequence Selection for Multi-Carrier Communication

open access: yesSensors, 2022
Orthogonal frequency division multiplexing (OFDM) is an efficient multicarrier scheme that uses different types of guard intervals such as cyclic prefix (CP) and known symbol padding (KSP) (zero padding (ZP), unique word (UW), etc.) in block formation ...
Oluwaseun Ologun   +4 more
doaj   +1 more source

PARAMETERS ESTIMATION OF RECEIVED SIGNAL IN SINGLE-FREQUENCY NETWORK DVB-T2 [PDF]

open access: yesJournal of Engineering Science (Chişinău), 2020
This paper deals with the quality parameters of a television terrestrial signal received in the service area of a single-frequency DVB-T2 network, operating in the SISO mode (Single Input Single Output).
IACOB, Mihail   +2 more
doaj   +1 more source

Improving the Resistance of AO-OFDM Signal to Fiber Four-Wave Mixing Effect Based on Insertion Guard Interval

open access: yesPhotonics, 2023
In this paper, a method to suppress the impact of the nonlinear effects on an all optical orthogonal frequency division multiplexing (AO-OFDM) system is proposed.
Kai Lv   +7 more
doaj   +1 more source

Metrics Related to Confusion Matrix as Tools for Conformity Assessment Decisions

open access: yesApplied Sciences, 2023
Conformity assessment refers to activities undertaken to check whether some product, service or process meets certain criteria and specifications given by internationally accepted standards.
Dubravka Božić   +3 more
doaj   +1 more source

Anti-Multipath Orthogonal Chirp Division Multiplexing for Underwater Acoustic Communication

open access: yesIEEE Access, 2020
Multipath due to reflections of the sea surface, seabed, and obstacles, as well as inhomogeneity within the ocean, is an important characteristic of underwater acoustic channels. Mutual interference among multiple paths causes severe amplitude fading and
Peibin Zhu   +4 more
doaj   +1 more source

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