  Superdense coding promises increased classical capacity and communication
security but this advantage may be undermined by noise in the quantum channel.
We present a numerical study of how forward error correction (FEC) applied to
the encoded classical message can be used to mitigate against quantum channel
noise. By studying the bit error rate under different FEC codes, we identify
the unique role that burst errors play in superdense coding, and we show how
these can be mitigated against by interleaving the FEC codewords prior to
transmission. We conclude that classical FEC with interleaving is a useful
method to improve the performance in near-term demonstrations of superdense
coding.
