An impact of access network physical impairments on IPTV QoE in DSL enviroment

This paper analyses the impact of access network of physical impairments in DSL environment caused by primary parameters imperfections. It also analyses the correlation of BER (Bit Error Rate) and error control of DSL system with values of MDI (Media Delivery Index) which gives an indication of expected IPTV (Internet Protocol Television) QoE (Quality of Experience). Also this paper gives a review of different network impairments, proper values of QoS (Quality of Service) parameters, like MLR (Media Loss Rate) factor, and at the same time, their impact on quality of IPTV. At the end, practical examples are given of how different types of network physical impairments cause problems in delivering IPTV service.