A New Pilot-Aided Scheme to Measure Modulator Quadrature Imbalance in CO-OFDM Receiver

Chen Longquan; Qiao Yaojun; Ji Yuefeng

doi:10.1364/ACP.2011.83090H

Optical Transmission Systems, Subsystems, and Technologies
Proceedings of SPIE (Optica Publishing Group, 2011),
paper 83090H
•https://doi.org/10.1364/ACP.2011.83090H

A New Pilot-Aided Scheme to Measure Modulator Quadrature Imbalance in CO-OFDM Receiver

Chen Longquan, Qiao Yaojun, and Ji Yuefeng

Asia Communications and Photonics Conference and Exhibition 2011

Shanghai China
13–16 November 2011
ISBN: 978-0-8194-8957-9

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Digital Signal Processing I (DSPI)

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C. Longquan, Q. Yaojun, and J. Yuefeng, "A New Pilot-Aided Scheme to Measure Modulator Quadrature Imbalance in CO-OFDM Receiver," in Optical Transmission Systems, Subsystems, and Technologies, X. Liu, E. Ciaramella, N. Wada, and N. Chi, eds., Vol. 8309 of Proceedings of SPIE (Optica Publishing Group, 2011), paper 83090H.

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Abstract

The paper presents a new pilot-aided scheme to measure quadrature imbalance between the I and Q branch caused by imperfection of dual-parallel Mach-Zehnder modulator in a CO-OFDM transmission system. The method can accurately calculate the imbalance, and we implement the compensation of quadrature imbalance in a 36G CO-OFDM Receiver with applying GSOP algorithm.

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