@johncarlosbaez @gregeganSF
The latest NASA missions use the same coding scheme as 5G physical layer: LDPC (low-density parity-check) code.

Among capacity-approaching codes
LDPC approaches the Shannon limit more closely than any other class of codes.

LDPC was invented by Robert Gallager in 1961 and mostly forgotten (“a bit of 21st-century coding that happened to fall in the 20th century”). LDPC uses sparse Tanner graph.

#SignalProcessing #codingTheory #nasa #space