Asymmetrical Digital Subscriber Line System with Improved Data Rate

A method for transmitting and receiving data within a frequency band in an asymmetrical digital subscriber line system, the method comprising:

• transmitting data in an upstream direction using a first frequency section within the frequency band having first and second subsections, wherein the first subsection has an upper frequency equal to about the upper frequency of conventional ADSL systems and the second subsection beginning at a frequency greater then about the upper frequency of the first subsection;
• transmitting data in a downstream direction using a second frequency section;
• the data transmission in the first subsection having a first power spectrum density,
• the data transmission in the second subsection having a second power spectrum density lower than the first power spectrum density, and
• the data transmission in the second frequency section having a third power spectrum density lower than the second power spectrum density.

An asymmetrical digital subscriber line transceiver operable to transmit and receive over a frequency spectrum,

• the frequency spectrum having a data transmission band from frequency FU0 to frequency FDE, the data transmission band including a first section from frequency FU0 to frequency FUE for transmitting upstream data and a second section from frequency FD0 to frequency FDE for transmitting downstream data, the first section having a first subsection from frequency FU0 to frequency FU1 and comprising a channels and a second subsection from frequency FU1 to frequency FUE, wherein FU0<FU1<FUE<FD0<FDE;
• the data transmission in the first subsection has a first power spectrum density,
• the data transmission in the second subsection has a second power spectrum density lower than the first power, and
• the data transmission in the second section has a third power spectrum density lower than the second power spectrum density.