{"title":"Employing the neural networks to parametrically assess the quality of a voice call","authors":"Chun-Wei Lin, Philippe Fournier-Viger","doi":"10.1109/SPECTS.2016.7570521","DOIUrl":"https://doi.org/10.1109/SPECTS.2016.7570521","url":null,"abstract":"The paper deals with the modelling of the network effects on the quality of speech in the Voice over IP networks. The main purpose of the ideas presented here is to achieve high-precision estimation of the speech quality in the environment in which the classical approaches of speech quality determination fail. To achieve such a high precision a modular neural network model is used to map the effects of a packet loss on the speech quality based on the PESQ (Perceptual Evaluation of the Speech Quality) reference. To incorporate the temporal effects, the Emodel is partially utilized as well. This way a universal tool capable of harnessing the information about the speech quality for stress testing and monitoring of the local infrastructure has been developed enabling the telephony infrastructure administrators to evThe paper deals with the modelling of the network effects on the quality of speech in the Voice over IP networks. The main purpose of the ideas presented here is to achieve highprecision estimation of the speech quality in the environment in which the classical approaches of speech quality determination fail. To achieve such a high precision a modular neural network model is used to map the effects of a packet loss on the speech quality based on the PESQ (Perceptual Evaluation of the Speech Quality) reference. To incorporate the temporal effects, the Emodel is partially utilized as well. This way a universal tool capable of harnessing the information about the speech quality for stress testing and monitoring of the local infrastructure has been developed enabling the telephony infrastructure administrators to evaluate the performance and stability of the systems in their hands. Moreover, a high-performance simulation environment has been developed.aluate the performance and stability of the systems in their hands. Moreover, a high-performance simulation environment has been developed.","PeriodicalId":302558,"journal":{"name":"2016 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124286690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Al-Habashna, Gabriel A. Wainer, G. Boudreau, Ronald Casselman
{"title":"Distributed cached and segmented video download for video transmission in cellular networks","authors":"A. Al-Habashna, Gabriel A. Wainer, G. Boudreau, Ronald Casselman","doi":"10.1109/SPECTS.2016.7570510","DOIUrl":"https://doi.org/10.1109/SPECTS.2016.7570510","url":null,"abstract":"Wireless video accounted for more than half of the total data traffic in cellular networks in 2015, and this is expected to further increase in the upcoming years. Device-to-Device (D2D) communication, introduced by the LTE-Advanced (LTEA) standard, allows direct communication between devices in cellular networks. Here, we introduce the DIStributed, Cached, and Segmented video download (DISCS) algorithm for improving the throughput of video transmission in cellular networks based on D2D communications. The algorithm splits video files into pieces, which are distributed over selected user equipment (UEs) in the cellular network, to cache and forward the pieces using D2D communication. We used the Discrete EVent System Specification (DEVS) formalism to build an LTEA network model and used the model to study the performance of DISCS. Simulation results show that DISCS achieves significant performance improvements in terms of the cell's aggregate data rate as well as the average data rate per user.","PeriodicalId":302558,"journal":{"name":"2016 International Symposium on Performance Evaluation of Computer and Telecommunication Systems (SPECTS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114448011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}