Sensitivity Improvement and Carrier Power Reduction in Direct-detection Optical Ofdm Systems by Subcarrier Pairing References and Links on Bit and Power Loading for Ofdm over Si-pof, "
Sensitivity Improvement and Carrier Power Reduction in Direct-detection Optical Ofdm Systems by Subcarrier Pairing References and Links on Bit and Power Loading for Ofdm over Si-pof, "
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Yi Hong;Arthur James Lowery;E. Viterbo;J. Lowery;Armstrong;Z. B. J. C. Schmidt;L. B. Zan;A. J. Du;Lowery;S L Jansen;I. Morita;N. Tadeka;H. Tanaka;J Boutros;E. Viterbo;Y Hong;Arthur James Lowery;J M Tang;P. M. Lane;K. Shore;High;Q Yang;W. Shieh;Y. Ma;B Cardiff;M. Flanagan;F. Smyth;L. Barry;A. Fagan
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作者：
Yi Hong;Arthur James Lowery;E. Viterbo;J. Lowery;Armstrong;Z. B. J. C. Schmidt;L. B. Zan;A. J. Du;Lowery;S L Jansen;I. Morita;N. Tadeka;H. Tanaka;J Boutros;E. Viterbo;Y Hong;Arthur James Lowery;J M Tang;P. M. Lane;K. Shore;High;Q Yang;W. Shieh;Y. Ma;B Cardiff;M. Flanagan;F. Smyth;L. Barry;A. Fagan
本文介绍了光学 OFDM 系统的子载波配对，并通过仿真表明直接检测光学正交频分复用 (DDO-OFDM) 系统的灵敏度可提高 0.7 dB，而无需任何编码开销。子载波配对之所以有效，是因为每个子载波获得不同的电信号与干扰加噪声比 (SINR)，该比通常随着子载波的频率而增加。将好的子载波和坏的子载波配对，以便在它们之间分割信息，对坏子载波的性能的提高比对好子载波性能的降低要多。这降低了系统提供一定误码率 (BER) 所需的光信噪比 (OSNR)。用于长距离光系统色散补偿的正交频分复用，“使用单带偏振复用自相干光 OFDM 在 500 公里范围内实现 120 Gbit/s 选项”，J.“通过 RF 导频音相位噪声补偿实现 4,160 公里 SSMF 上的 20 Gb/s OFDM 传输”，《信号空间分集：功率和分集》 瑞利衰落信道的带宽高效分集技术，“IEEE Trans.通过光副载波配对提高直接检测光 OFDM 系统的灵敏度，”使用直接调制 DFB 在多模光纤上高速传输自适应调制光 OFDM 信号，”J.
This paper introduces subcarrier pairing to optical OFDM systems and shows, using simulations, that the sensitivity of Direct-Detection Optical Orthogonal Frequency Division Multiplexed (DDO-OFDM) systems can be improved by 0.7 dB, without any coding overheads. Subcarrier pairing works because each subcarrier acquires a different electrical Signal to Interference plus Noise Ratio (SINR), which typically increases with the subcarrier's frequency. Pairing the good and bad subcarriers, so that information is split between them, improves the performance of the bad subcarrier more than it degrades the performance of the good subcarrier. This lowers the required Optical Signal to Noise Ratio (OSNR) for the system to give a certain Bit Error Ratio (BER). Orthogonal-frequency-division multiplexing for dispersion compensation of long-haul optical systems, " Opt. 120 Gbit/s over 500-km using single-band polarization-multiplexed self-coherent optical OFDM, " J. " 20-Gb/s OFDM transmission over 4,160-km SSMF enabled by RF-pilot tone phase noise compensation, " in Signal space diversity: a power-and bandwidth-efficient diversity technique for the Rayleigh fading channel, " IEEE Trans. Improving the sensitivity of direct-detection optical OFDM systems by pairing of the optical subcarriers, " inspeed transmission of adaptively modulated optical OFDM signals over multimode fibers using directly modulated DFBs, " J.