Compensation of quadrature imbalance in an optical 16-QAM digital coherent receiver

Authors :: Md. Saifuddin Faruk
Source :: 14th International Conference on Computer and Information Technology (ICCIT 2011).
Publication Year :: 2011
Publisher :: IEEE, 2011.
Abstract: In this paper, the impact of quadrature imbalance (QI) is analyzed for an optical 16-quadrature amplitude modulation (16-QAM) transmission system that employs digital coherent receivers. A compensation method for QI in digital domain is demonstrated using four real-valued filters connected in butterfly configurations and adapted by decision-directed least-mean-square (DD-LMS) algorithm. The effectiveness of the proposed QI compensation scheme is verified by numerical simulations.

Subjects :: Quadrature modulation
business.industry
Computer science
Carrierless amplitude phase modulation
Transmission system
Quadrature (mathematics)
Amplitude modulation
Pulse-amplitude modulation
Electronic engineering
Telecommunications
business
Adaptive quadrature
In-phase and quadrature components
Quadrature amplitude modulation
Amplitude and phase-shift keying
Clenshaw–Curtis quadrature
Phase-shift keying

Database :: OpenAIRE
Journal :: 14th International Conference on Computer and Information Technology (ICCIT 2011)
Accession number :: edsair.doi...........b05d0e91b361706e7a86620c531d9c6b
Full Text :: https://doi.org/10.1109/iccitechn.2011.6164847

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