基于级联变系数训练序列和预增强技术的直接检测光OFDM系统实验研究

doi:10.3969/j.issn.1000-436X.2013.12.017

Abstract

Abstract:

Frequency selective fading (FF)caused by digital to analog converter and optical fibe dispersion in optical fiber link was analysed,and signal-signal mixing interference (SSMI) when the orthogonal frequency division multiplex-ing (OFDM) signal was detected by PIN after transmitting over the fiber in direct-detection optical OFDM system.The cascaded variable coefficient training sequences and pre-emphasized configuration of O-OFDM signal were proposed to decrease the influence of the SSMI and FF.The theoretical analysis and experimental results show that the receiving sen-sitivity of the cascaded variable coefficient training sequences and pre-emphasized configuration of OFDM signal is higher than the interleaved configuration of training ed that the fiber transmission performance of the cascaded variable coefficient training sequences and pre-emphasized configuration of O-OFDM signal is better than the interleaved configuration of training sequence of OFDM signal in ro-bust tolerance against SSMI and FF.

Key words: optical orthogonal frequency division multiplexing(O-OFDM), variable coefficient training sequence, pre-emphasis technique, subcarrier-subcarrier mixing interference(SSMI), frequency selective fading(FF), optical trans-mission

Wei WU,Jiang-nan XIAO,Ming CHEN,Jian-jun YU,Lin CHEN. Experimental research on a direct-detection optical OFDM system based on cascaded variable coefficient training sequences and pre-emphasis technique[J]. Journal on Communications, 2013, 34(12): 149-157.

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References 21

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Experimental research on a direct-detection optical OFDM system based on cascaded variable coefficient training sequences and pre-emphasis technique

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