Hybrid frequency-time domain Tx and Rx I/Q imbalance compensation for coherent optical OFDM transmission

Simin Chen; Abdullah Al Amin; William Shieh

doi:10.1117/12.888150

18 February 2011 Hybrid frequency-time domain Tx and Rx I/Q imbalance compensation for coherent optical OFDM transmission

Simin Chen, Abdullah Al Amin, William Shieh

Author Affiliations +

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.

Citation Download Citation

Simin Chen, Abdullah Al Amin, and 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); https://doi.org/10.1117/12.888150

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