Vectored DSLs with DSM: The road to Ubiquitous Gigabit DSLs

This paper investigates the Digital Subscriber Line (DSL) data-rate increases possible with the Dynamic Spectrum Management (DSM) methods known as Level 3 Vectoring and Level 2 Band Preference. A suggested sequence of increasingly binder-adaptive DSM steps appears herein to assist and motivate DSL service providers and equipment vendors to progress in use of DSM. In particular, studies of bounds of spectral balancing find Band Preference as a practical method that provides the highest possible Level 2 performance in bundled or unbundled DSL environments. Investigations of vectoring begin with differential vectoring and show very high DSL data rates. These data rates increase further through the use of full-binder vectoring, leading to projections of feasible DSM vectored implementations of multi-100Mbps DSLs.