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The first experimental demonstration of nonbinary-LDPC-coded optical transmission is presented. Using DQPSK, we can achieve >;8dB and ~10dB net coding gains at the BER of 10-6 in the absence and presence of I/Q imbalance, respectively.
We present two hard-decision decoding schemes suitable for use in beyond 100 Gb/s optical transmission. The first scheme is based on multidimensional turbo product codes (MTPCs) with component Reed-Solomon (RS) codes. The second scheme is based on generalized low-density parity-check (GLDPC) codes with component RS codes. The proposed schemes perform comparable to recent concatenation of RS and LDPC...
We present a hard-decision decoding FEC scheme suitable for use in beyond 100 Gb/s transmission. It is based on generalized LDPC (GLDPC) codes with component RS codes. The GLPDC code of code rate 0.82 with component codes being (255,239) and (255,223) RS codes, provides the net effective coding gain of 9.67 dB at BER of 10-15.
We propose a three-dimensional (3-D) low-density parity check (LDPC)-coded modulation scheme that enables optical transmission beyond 320 Gb/s in aggregate rate using currently available commercial components operating at 40 giga-symbols/s. The proposed scheme introduces significant performance improvement of up to 4.1 dB at a bit-error ratio of 10-9 over the corresponding two-dimensional scheme....
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