Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "packet loss" wg kryterium: Temat


Tytuł:
Analysis of The Effectiveness of Online Electronic Learning System Using Data Traffic Network Performance Management to Succeed Merdeka Learning : Merdeka Campus During the Covid-19 Pandemic
Autorzy:
Budiyanto, Setiyo
Silalahi, Lukman Medriavin
Silaban, Freddy Artadima
Sitorus, Henry Binsar Hamonangan
Rochendi, Agus Dendi
Ismail, Mochamad Furqon
Tematy:
delay
throughput
packet loss
education
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/2055225.pdf  Link otwiera się w nowym oknie
Opis:
The problems in the Covid-19 pandemic have a major influence on the field of education with the use of technology to support the teaching and learning process to facilitate students who do home learning activities. The proposed concept of freedom of learning is a more comprehensive concept such as portfolio and assignments such as group assignments, writings, and so on that are done in full online by adding additional features such as Teaching and Learning Activities and Assessment through information technology media. (E-Learning / Learning Management System). The method proposed in this research is the Peer Connection Queue (PCQ) method on mikrotik operating systems. PCQ method is a program to manage network traffic in Quality of Services (QoS). Bandwidth management methods. The hypothesis formulated is to create bandwidth management with PCQ so that bandwidth sharing is automatically and evenly distributed to multi clients. Therefore, in this research finally formulated into the goal of E-Learning effectiveness analysis using bandwidth management analysis method, which will be measured and analyzed in this research is throughput, delay, jitter, and packet loss. So that the final result of this research obtained the feasibility of the teaching and learning process that is carried out effectively.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simple analysis of the impact of packet loss and delay on voice transmission quality
Autorzy:
Perlicki, K.
Tematy:
E-model
packet network
packet loss
delay
transmission quality rating
Pokaż więcej
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/309277.pdf  Link otwiera się w nowym oknie
Opis:
In this paper a simple analytical expression based on E-model is applied to analyse the impact of packet loss and delay on voice transmission quality. The relationship between overall transmission quality rating, packet loss and delay G.711, G.723 and G.729 codes is presented.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficient Performance and Lower Complexity of Error Control Schemes for WPAN Bluetooth Networks
Autorzy:
El-Bendary, M. A. M.
El-Tokhy, M. A. R.
Tematy:
Bluetooth
EDR
packet loss
power efficiency
Wireless Personal Area Network
Pokaż więcej
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/308324.pdf  Link otwiera się w nowym oknie
Opis:
This paper presents a new technique of reduction retransmission time by decreasing the discarded packets and combating the complexity through error control techniques. The work is based on Bluetooth, one of the most common Wireless Personal Area Network. Its early versions employ an expurgated Hamming code for error correction. In this paper, a new packet format using different error correction coding scheme and new formats for the EDR Bluetooth packets are presented. A study for the Packet Error Probability of classic and Enhanced Data Rate (EDR) packets is also presented to indicate the performance. The simulation experiments are performed over Additive White Gaussian Noise (AWGN) and Rayleigh flat-fading channels. The experimental results reveal that the proposed coding scheme for EDR packets enhances the power efficiency of the Bluetooth system and reduce the losses of EDR packets.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Voice over IP Transmission Degradations on MAP-EM-GMM Speaker Verification Performance
Autorzy:
Maciejko, W.
Tematy:
automatic speaker verification
packet loss
speech compression
voice over IP
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:
https://bibliotekanauki.pl/articles/177874.pdf  Link otwiera się w nowym oknie
Opis:
Despite the growing importance of packet switching systems, there is still a shortage of thorough analyses of VoIP transmission effect on speech and speaker recognition performance. Voice over IP transmission systems use packet switching. There is no guarantee of delivery. The main disadvantage of VoIP is a packet loss which has a major impact on the performance experienced by the users of the network. There are several techniques to mask the effects of a packet loss, referred to as packet loss concealment. In this study, the effect of voice transmission over IP on automatic speaker verification system performance was investigated. The analyzed system was based on MAP-EM-GMM modelling methods. Four various speech codecs of H.323 standard were investigated with special emphasis placed on the packet loss phenomenon and various packet loss concealment techniques.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Imitation modeling of the routing process based on fuzzy logic
Model symulacji procesu routingu opartego na logice rozmytej
Autorzy:
Lesovoy, I.
Pylypenko, G.
Tematy:
fuzzy logic
routing
load
packet loss
logika rozmyta
obciążenie
utrata pakietów
Pokaż więcej
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Powiązania:
https://bibliotekanauki.pl/articles/408625.pdf  Link otwiera się w nowym oknie
Opis:
The paper discusses the details of modeling of the routing process according to the loading of output buffer storage. Shows the obtained dependence of the fraction of lost packets from the input intensity. It is shown that taking into account buffer occupancy increases the efficiency of their use and can significantly affect the quality of the functioning of the telecommunications network in the face of considerable.
W niniejszym artykule zostały omówione cechy symulacji procesu routingu uwzględniające nośność buforów wyjściowych napędu. Otrzymano zależność frakcji zagubionych pakietów od intensywności strumienia wejściowego. Wykazano, że uwzględnienie obciążenia bufora zwiększa efektywność ich użytkowania i może znacząco wpłynąć na wydajność sieci telekomunikacyjnej w warunkach znacznego obciążenia.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Burst Ratio in Concatenated Channels
Autorzy:
Rachwalski, J.
Papier, Z.
Tematy:
bursty packet loss
E-model
quality of experience
voice over IP
Pokaż więcej
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/309539.pdf  Link otwiera się w nowym oknie
Opis:
Burst ratio is a parameter that quanties packet loss patterns in transmission networks. It has been dened for an end-to-end scenario, therefore burst ratio can be determined only if the characteristics of the whole transmission path are known. In this paper, the burst ratio parameter applicability to cases when the transmission path consists of a series of transmission channels with known packet loss rate and burst ratio values is extended. The paper also presents the results of simulations performed with NS2 software, demonstrating the validity of the burst ratio analysis. Consequently, the research makes it possible to determine the value of the burst ratio parameter in concatenated packet networks, which in turn supports delivering higher quality VoIP services.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Burst Ratio in Concatenated Markov-based Channels
Autorzy:
Rachwalski, J.
Papir, Z.
Tematy:
burst ratio
bursty packet loss
E-Model
quality of service
voice over IP
Pokaż więcej
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/307592.pdf  Link otwiera się w nowym oknie
Opis:
This paper deals with the burst ratio parameter, which describes the burstiness of a packet loss observed in digital networks. It is one of the input parameters of E-model – the most widely used method of assessing conversational quality of telephony. The burst ratio is defined for one channel scenario so it can be calculated when the whole transmission path has been characterized by a single set of parameters. The main objective of the paper is to extend the burst ratio definition when the transmission path is defined as a tandem concatenation of transmission channels being described by their individual burst ratios. It is assumed that packet loss of a single channel is described by a 2-state Markov chain. The final result of the research is an equation describing the burst ratio parameter when the transmission path consists of multiple concatenated channels. The derived formula has been validated by extensive simulations.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
QoS Conditions for VoIP and VoD
Autorzy:
Dymarski, P.
Kula, S.
Huy, T. N.
Tematy:
delay jitter
packet loss rate
PESQ
POLQA
quality of service
VoD
VoIP
VQM
VQmon
Pokaż więcej
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/307870.pdf  Link otwiera się w nowym oknie
Opis:
This paper concerns quality evaluation of the telecommunication services: VoIP (representing the RT interactive class) and VoD (representing the MM streaming class). Subjective and objective methods and tools for perceived quality measurement are analyzed and compared. Subjective tests are performed for selected video sequences using the Double-Stimulus Impairment Scale (DSIS) method. Thus the objective algorithms (VQM and VQmon) are calibrated. Speech quality is measured using the objective methods: PESQ and POLQA. Threshold values for network parameters (packet loss rate, delay jitter) are set, that guarantee the acceptable service quality.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of the duration of speech sequences on speech quality
Autorzy:
Pocta, P.
Vaculík, M.
Tematy:
voice transmission quality of service
speech sequence
intrusive measurement
perceptual evaluation of speech quality
jitter rate
packet loss
Pokaż więcej
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/308555.pdf  Link otwiera się w nowym oknie
Opis:
This paper describes simulations of speech sequences transmission for intrusive measurement of voice transmission quality of service (VTQoS) in the environment of IP networks. The aim of the simulations was to investigate the impact of the different durations of speech sequences on speech quality from the jitter rate and packet loss point of view in IP networks. The ITU-T G.729 and ITU-T G.723.1 encoding schemes were used for the purpose of the simulations. The assessment of speech quality was realized by means of perceptual evaluation of speech quality (PESQ) algorithm. A comparison of the impact of different durations of speech sequences on speech quality and determination of the optimal duration of speech sequence for measurements of speech quality in telecommunication networks, is the aim of this paper.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transient and stationary characteristics of a packet buffer modelled as an MAP/SM/1/b system
Autorzy:
Rusek, K.
Janowski, L.
Papir, Z.
Tematy:
router interface
Markovian arrival process
semi Markov service time
hidden Markov model
finite buffer queue
packet loss
first passage time
proces Markowiana
model Markowa niejawny
utrata pakietu
Pokaż więcej
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:
https://bibliotekanauki.pl/articles/330560.pdf  Link otwiera się w nowym oknie
Opis:
A packet buffer limited to a fixed number of packets (regardless of their lengths) is considered. The buffer is described as a finite FIFO queuing system fed by a Markovian Arrival Process (MAP) with service times forming a Semi-Markov (SM) process (MAP/SM/1/b in Kendall’s notation). Such assumptions allow us to obtain new analytical results for the queuing characteristics of the buffer. In the paper, the following are considered: the time to fill the buffer, the local loss intensity, the loss ratio, and the total number of losses in a given time interval. Predictions of the proposed model are much closer to the trace-driven simulation results compared with the prediction of the MAP/G/1/b model.
Dostawca treści:
Biblioteka Nauki
Artykuł

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies