Impulse Noise Protection Initiatives in VDSL2 Systems

In recent years, VDSL2 standard has been gaining popularity as a high speed network access technology to deliver triple play services of video, voice and data. These services require strict quality-of-experience (QoE) and quality-of-services (QoS) on DSL systems operating in an impulse noise environment. The DSL systems, in-turn, are affected severely in the presence of impulse noise in the telephone line. Therefore to improve upon the requirements of IPTV under the impulse noise conditions the standard body has been evaluating various proposals to mitigate and reduce the error rates. This paper lists and qualitatively compares various initiatives that have been suggested in the VDSL2 standard body to improve the protection of VDSL2 services against impulse noise.