The growing demand to transmit high-speed digital data in many local area networks and digital subscriber lines has resulted in a wide variety of transmission systems that have to co-exist on twisted wire copper pairs. The problem of maintaining spectrum compatibility between various services that may use different transmission technologies is addressed by shaping the power spectral density of the transmit signal in an optimal manner. Discrete multitone (DMT) was selected as the standard modulation scheme for asymmetric digital subscriber lines (ADSL). The results presented are for the specific application of DMT to transport ADSL payloads of over 6 Mb/s from the network to the customer.
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering