Probabilistic constellation shaping (PCS) has been widely applied to amplified coherent
optical transmissions owing to its shaping gain over the uniform signaling and fine …

In intensity-modulation and direct-detection (IM-DD) communication systems, electrical
chromatic dispersion (CD) compensation cannot be directly applied in the transceivers due …

Probabilistic shaping for intensity modulation and direct detection (IM/DD) links is discussed
and a peak power constraint determined by the limited modulation extinction ratio (ER) of …

We investigate the capacity-achieving symbol distributions for directly modulated laser
(DML) and direct-detection (DD) systems utilizing probabilistic constellation shaped pulse …

A multilevel coded modulation scheme is studied that uses solely binary polar codes and
Honda-Yamamoto probabilistic shaping. The scheme is shown to achieve the capacity of …

We report 108 Gb/s Duo-Binary PAM-8 (DB-PAM-8) transmission using direct-detection
aided by Volterra equalizer. The bit-error-rate (BER) performance of the DB-PAM-8 signal …

The capacity and capacity-achieving distribution for memoryless intensity-modulation and
direct-detection (IM-DD) fiber-optic channels are theoretically investigated. Different from …

A novel triple-convex 8-ary pulse amplitude modulation (TC-PAM8) probabilistic
constellation shaping (PCS) scheme with bipolar symmetric alphabet is proposed in the …

The capacity and capacity-achieving distribution for intensity-modulation and direct-
detection (IM-DD) fiber-optic channels is theoretically investigated. Different from coherent …

We propose and experimentally demonstrate the intensity-modulation direct-detection
(IM/DD) transmission employing low-density parity-check (LDPC) coded probabilistic …