Laser linewidth tolerance of decision-aided maximum likelihood phase estimation in coherent optical M-ary PSK and QAM systems

Please use this identifier to cite or link to this item: https://doi.org/10.1109/LPT.2009.2022750

Title:	Laser linewidth tolerance of decision-aided maximum likelihood phase estimation in coherent optical M-ary PSK and QAM systems
Authors:	Zhang, S. Kam, P.Y. Yu, C. Chen, J.
Keywords:	Coherent detection Optical fiber communication
Issue Date:	2009
Citation:	Zhang, S., Kam, P.Y., Yu, C., Chen, J. (2009). Laser linewidth tolerance of decision-aided maximum likelihood phase estimation in coherent optical M-ary PSK and QAM systems. IEEE Photonics Technology Letters 21 (15) : 1075-1077. ScholarBank@NUS Repository. https://doi.org/10.1109/LPT.2009.2022750
Abstract:	This letter extends the decision-aided (DA) maximum likelihood (ML) phase estimation in an Mary phase-shift keying (PSK) system to quadrature amplitude modulation (QAM) signals. The block length effect is simulated for both M-ary PSK and QAM systems, and also investigated in M-ary PSK systems through analysis. Our results show that the tolerance of DA ML to laser linewidth for square 16-QAM can be increased by >10 times compared to the block Mth power scheme. © 2009 IEEE.
Source Title:	IEEE Photonics Technology Letters
URI:	http://scholarbank.nus.edu.sg/handle/10635/56461
ISSN:	10411135
DOI:	10.1109/LPT.2009.2022750
Appears in Collections:	Staff Publications

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