Robust digital communication system

A transmitter for transmitting robust VSB data comprising:

• an outer coder that receives input data and that codes the input data as first robust VSB data, wherein the first robust VSB data is normally ordered;
• a first interleave that reorders the first robust VSB data to provide reordered first robust VSB data;
• and,
• a second interleave that reorders the reordered first robust VSB data to provide second robust VSB data, wherein the second robust VSB data is normally ordered, and wherein the first and second interleaves are inversely related.

A system comprising:

• a receiver that receives data, wherein the received data comprises normally ordered first data and reordered second data, wherein the normally ordered first data results from inner and outer coding of first input data and two interleaving operations, and wherein the reordered second data results from inner coding of second input data and one interleaving operation;
• an inner decoder that inner decodes the received data to recover the normally ordered first data and the reordered second data;
• a data discarder downstream of the inner decoder that discards the reordered second data;
• and,
• an outer decoder downstream of the data discarder that outer decodes the normally ordered first data.

A method of processing received data comprising:

• receiving data, wherein the received data comprises normally ordered first data and reordered second data, wherein the normally ordered first data results from inner and outer coding of first input data and two interleaving operations, wherein the reordered second data results from inner coding of second input data and one interleaving operation;
• inner decoding the received data to recover the normally ordered first data and the reordered second data;
• and,
• discarding the recovered normally ordered first data.

A system comprising:

• a receiver that receives data, wherein the received data comprises normally ordered first data and reordered second data, wherein the normally ordered first data results from two interleaving operations, and wherein the reordered second data results from one interleaving operation;
• a decoder that decodes the received data to recover the normally ordered first data and the reordered second data;
• and,
• a data discarder downstream of the decoder that discards the recovered reordered second data.

A method of processing received data comprising:

• receiving data, wherein the received data comprises normally ordered first data and reordered second data, wherein the normally ordered first data results from inner and outer coding of first input data and two interleaving operations, wherein the reordered second data results from inner coding of second input data and one interleaving operation;
• decoding the received data to recover the normally ordered first data and the reordered second data;
• and,
• upon a user selection, either reordering the recovered normally ordered first data and reordered second data and subsequently discarding the reordered normally ordered first data or discarding the recovered reordered second data and subsequently reordering the recovered normally ordered first data.