With large enough blocks and efficient coding, the noisy-channel coding theorem guarantees nearly error-free transmission rates up to the maximum possible chann

With large enough blocks and efficient coding, the noisy-channel coding theorem guarantees nearly error-free transmission rates up to the maximum possible channel capacity. Modern LDPC, Raptor, and Turbo codes can get very close (to within 0.0045dB) of this Shannon limit, meaning that far from being less efficient, FEC allows for maximal bandwidth efficiency.