Destination dependent coding for discrete multi-tone modulation

A method of receiving, at a remote device, data transmitted over a subscriber line extending from a shared device using a symbol-based discrete multi-tone transmission scheme, wherein the remote device has a unique destination code assigned thereto, the method comprising the steps of:

• receiving transmitted first and second groups of frequency bands using a symbol-based discrete multi-tone transmission scheme;
• examining the transmitted first group of frequency bands using a symbol-based discrete multi-tone transmission scheme for a destination code therewithin;
• and
• demodulating modulated data within the second group of frequency bands using a symbol-based discrete multi-tone transmission scheme when a destination code transmitted within the first group of frequency bands matches a destination code assigned to the remote device.

A method of simultaneously transmitting data over a plurality of subscriber lines extending between a shared device and a respective plurality of remote devices using a symbol-based discrete multi-tone transmission scheme, wherein each of the remote devices has a unique destination code assigned thereto, the method comprising the steps of:

• during each symbol interval, transmitting from the shared device, via the plurality of subscriber lines, a destination code within a first group of frequency bands and modulated data within a second group of frequency bands different from the first group of frequency bands using a symbol-based discrete multi-tone transmission scheme, wherein the second group of frequency bands is selected for a subscriber line connected to a remote device having the destination code assigned thereto;
• at each remote device receiving the transmitted first and second groups of frequency bands using a symbol-based discrete multi-tone transmission scheme, examining the transmitted first group of frequency bands for a destination code therewithin;
• and
• at a remote device having an assigned destination code that matches a destination code within the transmitted first group of frequency bands, demodulating modulated data within the transmitted second group of frequency bands.

A system for simultaneously transmitting data over a plurality of subscriber lines extending between a shared device and a respective plurality of remote devices using a symbol-based discrete multi-tone transmission scheme, comprising:

• means for training each connection over each subscriber line extending between a shared device and a respective plurality of remote devices using a symbol-based discrete multi-tone transmission scheme to provide subscriber line specific information for each subscriber line;
• means for transmitting and receiving information over each subscriber line extending between a shared device and a respective plurality of remote devices using a symbol-based discrete multi-tone transmission scheme utilizing the corresponding subscriber line specific information;
• and
• means for transmitting to each remote device a destination code within a first group of frequency bands and modulated data within a second group of frequency bands different from the first group of frequency bands, wherein bits transmitted in each of the frequency bands in the second group of frequency bands are selected for a subscriber line connected to a remote device having the destination code within the first group of frequency bands.

A system of receiving, at a remote device, data transmitted over a subscriber line extending from a shared device using a symbol-based discrete multi-tone transmission scheme, wherein the remote device has a unique destination code assigned thereto, comprising:

• means for receiving transmitted first and second groups of frequency bands using a symbol-based discrete multi-tone transmission scheme;
• means for examining the transmitted first group of frequency bands using a symbol-based discrete multi-tone transmission scheme for a destination code therewithin;
• and
• means for demodulating modulated data within the second group of frequency bands using a symbol-based discrete multi-tone transmission scheme when a destination code transmitted within the first group of frequency bands matches a destination code assigned to the remote device.

A system of simultaneously transmitting data over a plurality of subscriber lines extending between a shared device and a respective plurality of remote devices using a symbol-based discrete multi-tone transmission scheme, wherein each of the remote devices has a unique destination code assigned thereto, comprising:

• means for transmitting from the shared device, via the plurality of subscriber lines during each symbol interval, a destination code within a first group of frequency bands and modulated data within a second group of frequency bands different from the first group of frequency bands using a symbol-based discrete multi-tone transmission scheme, wherein a number of bits transmitted within each of the frequency bands in the second group of frequency bands are selected for a subscriber line connected to a remote device having the destination code assigned thereto;
• at each remote device receiving the transmitted first and second groups of frequency bands, means for examining the transmitted first group of frequency band for a destination code therewithin;
• and
• at a remote device having an assigned destination code that matches a destination code within the transmitted first group of frequency bands, means for demodulating modulated data within the transmitted second group of frequency bands.

A computer program product for simultaneously transmitting data over a plurality of subscriber lines extending between a shared device and a respective plurality of remote devices using a symbol-based discrete multi-tone transmission scheme, the computer program product comprising a computer usable storage medium having computer readable program code means embodied in the medium, the computer readable program code means comprising:

• computer readable program code means for training each connection over each subscriber line extending between a shared device and a respective plurality of remote devices using a symbol-based discrete multi-tone transmission scheme to provide subscriber line specific information for each subscriber line;
• computer readable program code means for transmitting and receiving information over each subscriber line extending between a shared device and a respective plurality of remote devices using a symbol-based discrete multi-tone transmission scheme utilizing the corresponding subscriber line specific information;
• and
• computer readable program code means for transmitting to each remote device a destination code within a first group of frequency bands and modulated data within a second group of frequency bands different from the first group of frequency bands, wherein bits transmitted in each of the frequency bands in the second group of frequency band are selected for a subscriber line connected to a remote device having the destination code within the first group of frequency bands.

A computer program product for receiving, at a remote device, data transmitted over a subscriber line extending from a shared device using a symbol-based discrete multi-tone transmission scheme, wherein the remote device has a unique destination code assigned thereto, the computer program product comprising a computer usable storage medium having computer readable program code means embodied in the medium, the computer readable program code means comprising:

• computer readable program code means for receiving transmitted first and second group of frequency bands using a symbol-based discrete multi-tone transmission scheme;
• computer readable program code means for examining the transmitted first group of frequency bands using a symbol-based discrete multi-tone transmission scheme for a destination code therewithin;
• and
• computer readable program code means for demodulating modulated data within the second group of frequency bands using a symbol-based discrete multi-tone transmission scheme when a destination code transmitted within the first group of frequency bands matches a destination code assigned to the remote device.

A computer program product for simultaneously transmitting data over a plurality of subscriber lines extending between a shared device and a respective plurality of remote devices using a symbol-based discrete multi-tone transmission scheme, wherein each of the remote devices has a unique destination code assigned thereto, the computer program product comprising a computer usable storage medium having computer readable program code means embodied in the medium, the computer readable program code means comprising:

• computer readable program code means for transmitting from the shared device, via the plurality of subscriber lines during each symbol interval, a destination code within a first group of frequency bands and modulated data within a second group of frequency bands different from the first group of frequency bands using a symbol-based discrete multi-tone transmission scheme, wherein bits transmitted in each of the frequency bands in the second group of frequency bands are selected for a subscriber line connected to a remote device having the destination code assigned thereto;
• at each remote device receiving the transmitted first and second group of frequency bands, computer readable program code means for examining the transmitted first group of frequency bands for a destination code therewithin;
• and
• at a remote device having an assigned destination code that matches a destination code within the transmitted first group of frequency bands, computer readable program code means for demodulating modulated data within the transmitted second group of frequency bands.