Interative decoder

An iterative decoding system comprising:

• a first decoder that decodes coded data;
• a first data improver, wherein the first data improver is arranged to reduce channel effects in the coded data based upon a reliability that the first decoder accurately decoded the encoded data, and wherein the first data improver is arranged to produce improved coded data;
• a second decoder that decodes the improved coded data;
• and,
• a second data improver, wherein the second data improver is arranged to reduce channel effects in the improved coded data based upon a reliability that the second decoder accurately decoded the improved encoded data.

An encoding method comprising:

• encoding un-coded data to produce first encoded data;
• encoding the un-coded data to produce second encoded data;
• and,
• concatenating the un-encoded data, the first encoded data, and the second encoded data.

A decoding method comprising:

• decoding a received signal in a first dimension to produce first decoded data and first redundant data;
• decoding the received signal in a second dimension to produce second decoded data and second redundant data;
• decoding the first decoded data with the second redundant data to produce third decoded data;
• decoding the second decoded data with the first redundant data to produce fourth decoded data;
• and,
• combining the third and fourth decoded data.