The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A lot of study has been done on the voice QoE (Quality of Experience). However, QoE study on the background of Chinese language is scarce. PESQ (Perceptual evaluation of speech quality) is a well known objective method for the voice QoE evaluation, it is approved as ITU-T P.862 Recommendations. This paper research the accuracy of PESQ in evaluating speech codec in Chinese environment. Two 3G speech...
As the Internet evolves into a ubiquitous communications, VoIP network becomes more important and popular. It will be expected to meet the quality standards for VoIP networks. The aim of this paper is to undertake a fundamental investigation to quantify the impact of network impairment and speech relates parameters on perceived QoS in VoIP networks. Our contribution is threefold. First, a new VoIP...
Recently, the evaluation on quality of the air interface in a wireless network has shifted from emphasis on QoS (quality of service) only to incorporation of QoE (quality of experience). However, it seems that QoE metrics have not been related to the surroundings of the served users so far, which may have a great influence on users' expected QoE. For instance, with a high level of QoS, a user's expectation...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.