Hybrid Frequency-Time Domain Tx and Rx I/Q Imbalance Compensation for Coherent Optical OFDM Transmission

被引：0
|
作者：
Chen, Simin [1 ]
Al Amin, Abdullah [1 ]
Shieh, William [1 ]
机构：
[1] Univ Melbourne, Dept Elect & Elect Engn, Melbourne, Vic 3010, Australia
来源：
OPTICAL TRANSMISSION SYSTEMS, SWITCHING, AND SUBSYSTEMS VIII | 2011年 / 7988卷
关键词：
I/Q imbalance; coherent communications; orthogonal frequency-division multiplexing (OFDM);
D O I：
10.1117/12.888150
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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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页数：6
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