Abstract
To make decision-aided (DA) maximum-likelihood (ML) phase estimation suitable for real-time processing, a parallel implementation is proposed. The variance of the phase error using the parallel DA ML is analytically examined. The bit-error-rate performance is also analytically investigated in different M-ary phase-shift keying (PSK) systems. The results show that parallel DA ML can outperform block Mth-power in binary PSK format, while suffering performance penalty originating from parallelism and pipelining in high-order PSK formats.
Original language | English |
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Pages (from-to) | 1471-1473 |
Number of pages | 3 |
Journal | IEEE Photonics Technology Letters |
Volume | 21 |
Issue number | 19 |
DOIs | |
Publication status | Published - 13 Oct 2009 |
Externally published | Yes |
Keywords
- Coherent detection
- Decision-aided maximum likelihood (DA ML)
- Laser phase noise
- M-ary phase-shift keying (PSK)
- Parallel processing
- Phase estimation
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering