18 February 2011 Hybrid frequency-time domain Tx and Rx I/Q imbalance compensation for coherent optical OFDM transmission
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Proceedings Volume 7988, Optical Transmission Systems, Switching, and Subsystems VIII; 79880Q (2011) https://doi.org/10.1117/12.888150
Event: Asia Communications and Photonics Conference and Exhibition, 2010, Shanghai, Shanghai, China
Abstract
A compensation scheme for transmitter (Tx) and receiver (Rx) I/Q imbalance with the interference of carrier frequency offset for CO-OFDM transmission is demonstrated. It has low over-head using only two specific designed symbols for Rx side I/Q imbalance and two for that of Tx side, respectively. Rx compensation is performed in time domain after OFDM frame synchronization and the Tx I/Q imbalance is compensated in frequency domain after channel and phase estimation. The bit error rate (BER) and Q improvement are evaluated experimentally to demonstrate the effectiveness of compensation algorithms. This scheme performs better with the increase of OSNR.
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Simin Chen, Simin Chen, Abdullah Al Amin, Abdullah Al Amin, William Shieh, William Shieh, } "Hybrid frequency-time domain Tx and Rx I/Q imbalance compensation for coherent optical OFDM transmission", Proc. SPIE 7988, Optical Transmission Systems, Switching, and Subsystems VIII, 79880Q (18 February 2011); doi: 10.1117/12.888150; https://doi.org/10.1117/12.888150
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