Low complexity soft differential decoding of QPSK for forward in coherent optic receivers
نویسندگان
چکیده
Coherent systems based on QPSK rely on differential encoding to avoid catastrophic error propagation. A simple solution for soft differential decoding is presented that limits the penalty after FEC to 0.75dB, similar to pre-FEC binary differential decoding.
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تاریخ انتشار 2017