title: Maximum likelihood sequence detection in laser phase noise-impaired coherent optical systems.
abstract: A maximum likelihood sequence detection (MLSD) receiver is used to detect data sequences in single-carrier coherent optical systems in the presence of laser phase noise. It requires no explicit phase estimation and involves only linear operations. It consistently shows improvement in the OSNR penalty (e.g., 1.1 dB at BER = 10⁻⁴ with memory length L =3) and the laser linewidth tolerance (e.g., around 4 times that of DAML at 1dB OSNR penalty at BER = 10⁻⁴ with memory length L =3) over the well-known DAML and Mth power approaches in laser phase noise (LPN)-impaired coherent optical systems.
authors: Department of Electrical and Computer Engineering, National University of Singapore, S117576, Singapore.
authors: Xuguang
authors: X
authors: Shao
authors: Pooi-Yuen
authors: PY
authors: Kam
authors: Changyuan
authors: C
authors: Yu