Inter-band interference suppression in multi-band OFDM-PON uplink transmission using window shaping

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• 作者：Chang-Hun Kim ; Sang-Min Jung ; Sun-Young Jung ; Soo-Min Kang ; Sang-Kook Han ; ^{skhan@yonsei.ac.kr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Component ; Multi-band orthogonal frequency division multiplexing ; Inter-band interference ; Window shaping ; Sidelobe suppression ; Passive optical network
• 刊名：Optical Fiber Technology
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：27
• 期：Complete
• 页码：35-40
• 全文大小：2410 K

文摘

We propose window shaping based inter-band interference suppression technique in multi-band orthogonal frequency division multiple access (MB-OFDMA) based passive optical network (PON) system. Conventional MB-OFDMA and raised-cosine (RC) windowed MB-OFDMA were compared in QPSK transmission and adaptive modulation scenario. The effect of OFDM clipping ratio is analyzed, which is used to mitigate peak to average power ratio (PAPR) problem at the transmitter. Also, the MB-OFDMA based multiple access performance is investigated according to the different roll-off factor of RC window in terms of error vector magnitude (EVM) and effective bit rate. Compared with the conventional MB-OFDMA which is rectangular windowed, the RC-windowed MB-OFDMA shows better performance by suppressed sidelobe which leads to IBI. The maximum effective bit rate of 10 Gbps was achieved for 20 km transmission scenario at optimum roll-off factor, while it was 9 Gbps in the conventional MB-OFDMA transmission.