Pilot-aided sampling frequency offset estimation and compensation using DSP technique in DD-OOFDM systems

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• 作者：Ming Chen ; Jing He ; ^{hnu_jhe@hotmail.com" class="auth_mail} ; Jin Tang ; Lin Chen
• 关键词：Optical fiber communication ; Orthogonal frequency division multiplexing (OFDM) ; Intensity modulation and direct detection (IM/DD) ; Sampling frequency offset (SFO)
• 刊名：Optical Fiber Technology
• 出版年：June, 2014
• 年：2014
• 卷：20
• 期：3
• 页码：268-273
• 全文大小：2364 K

文摘

To improve the outage performance of an optical orthogonal frequency-division multiplexing (OFDM) system under the frequency offset between the sampling clocks in the transmitter and receiver, a pilot-aided sampling frequency offset (SFO) estimation and compensation scheme for the optical OFDM system with intensity-modulation and direct-detection (DD-OOFDM) is experimentally demonstrated. The experimental and simulated results show that the scheme can work effectively even with large sampling frequency offsets. In addition, it can achieve a good bit error rate (BER) performance without the sampling clock frequency synchronization in the receiver.