Real-time IQ imbalance compensation for coherent optical OFDM transmission

A FPGA-based receiver side (Rx) IQ imbalance compensation scheme for 10.7-Gb/s 16-QAM CO-OFDM transmission is demonstrated in real time. The compensation scheme performs better with the increase of OSNR.

[1]  B. Zhu,et al.  Transmission of a 448-Gb/s reduced-guard-interval CO-OFDM signal with a 60-GHz optical bandwidth over 2000 km of ULAF and five 80-GHz-Grid ROADMs , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[2]  Sien Chi,et al.  Experimental demonstration of compensating the I/Q imbalance and bias deviation of the Mach-Zehnder modulator for an RF-tone assisted optical OFDM system , 2008, 2008 34th European Conference on Optical Communication.

[3]  Masayuki Kurosaki,et al.  A Simple Estimation Scheme for Joint Estimation of Carrier Frequency Offset and I/Q Imbalance , 2009, VTC Spring 2009 - IEEE 69th Vehicular Technology Conference.

[4]  William Shieh.  OFDM for adaptive ultra high-speed optical networks , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[5]  Qi Yang,et al.  Real-Time Multi-Gigabit Receiver for Coherent Optical MIMO-OFDM Signals , 2009, Journal of Lightwave Technology.

[6]  Hideaki Tanaka,et al.  A hybrid IQ imbalance compensation method for optical OFDM transmission. , 2010, Optics express.

[7]  William Shieh,et al.  Bandwidth-Efficient 21.4 Gb/s Coherent Optical 2×2 MIMO OFDM Transmission , 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.

[8]  S. Chandrasekhar,et al.  Efficient digital coherent detection of A 1.2-Tb/s 24-carrier no-guard-interval CO-OFDM signal by simultaneously detecting multiple carriers per sampling , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.