Some of the best known codes that approach the Shannon Limit are the Gallager, or Low-density parity-check, Codes [1], invented by Robert G. Gallager at MIT in

Some of the best known codes that approach the Shannon Limit are the Gallager, or Low-density parity-check, Codes [1], invented by Robert G. Gallager at MIT in 1960. The article goes on to mention Gallager, but doesn't provide many references. It's pretty interesting work so check it out! [1] https://en.wikipedia.org/wiki/Low_Density_Parity_Check_Codes https://en.wikipedia.org/wiki/Low_Density_Parity_Check_Codes [2] https://en.wikipedia.org/wiki/Robert_G._Gallager https://en.wikipedia.org/wiki/Robert_G._Gallager