EFFECTIVENESS OF GENERAL CLASS xDSL TECHNOLOGIES WITH ORTHOGONAL HARMONIC SIGNALS

Abstract

An efficiency assessment of transmission systems (TS) for multi-pair cable ТПП ADSL2 + type, using orthogonal harmonic signals of a generic class (OHS GC) is provided in the article. OHS GC is constructed by the multiplying of the harmonic signals by the optimal envelope function u (t). A OHS GC feature is the absence of guard time interval and a higher energy concentration in the frequency region in a comparison with the traditional harmonic signals. Due to this OHS GC provides greater immunity from concentrated in spectrum and interference noise. Transmission rate of different TS and gain in rate provided by the TS with OHS GC are estimated in the article with a help of TS characteristics' modeling considering interference, additive noise and the characteristics of the cable.