Adaptive modulation and intra-symbol frequency-domain averaging scheme for multiband OFDM UWB over fiber system
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- 作者：Jing He ; hnu_jhe@hotmail.com" class="auth_mail" title="E-mail the corresponding author ; jhe@hnu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Teng Li ; Xuejie Wen ; Rui Deng ; Ming Chen ; Lin Chen
- 关键词：Multiband orthogonal frequency division multiplexing ; Ultra-wideband over fiber system ; Frequency-selective fading ; Inter-subcarriers mixing interference ; Adaptive modulation
- 刊名：Optics Communications
- 出版年：2016
- 出版时间：1 January 2016
- 年：2016
- 卷：358
- 期：Complete
- 页码：45-53
- 全文大小：3692 K
文摘
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An adaptive modulation scheme based on 64/16/4QAM modulation is proposed.
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The proposed scheme is experimentally demonstrated in the IM/DD MB-OFDM UWBoF system.
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The power penalty of the proposed scheme is about 3.6 dB, compared with 64QAM encoded.
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The ISFA algorithm is employed in the MB-OFDM UWBoF system based on the proposed scheme.
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The receiver sensitivity has been improved about 0.52 dB by using ISFA algorithm.