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An improved multiplier-free feed-forward carrier phase estimation for dual-polarization QPSK modulation format

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【Author】 ZHONG Kang-ping 1,2, LI Tang-jun1,2, JIA Nan 1,2, SUN Jian 1,2, and WANG Mu-guang 1,2 1. State Key Laboratory of All Optical Network & Advanced Telecommunication Network, Beijing Jiaotong University, Beijing 100044, China 2. Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China

【机构】 State Key Laboratory of All Optical Network & Advanced Telecommunication Network,Beijing Jiaotong University； Institute of Lightwave Technology,Beijing Jiaotong University；

【摘要】 An improved multiplier-free feed-forward carrier phase estimation algorithm is proposed for dual-polarization quad-rature-phase-shift-keying (DP-QPSK) with coherent detection. The bit error rate (BER) performance, block length effect and linewidth tolerance of the proposed algorithm are evaluated for a 112 Gbit/s DP-QPSK system. A linewidth symbol duration product of 2.9×10-4 is demonstrated for 1 dB optical signal-to-noise-ratio (OSNR) penalty at BER of 10-3 for the proposed algorithm. The hardware complexity of the proposed multiplier-free algorithm is demonstrated to be much lower than that of the 4th power algorithm.更多还原

【Abstract】 An improved multiplier-free feed-forward carrier phase estimation algorithm is proposed for dual-polarization quad-rature-phase-shift-keying (DP-QPSK) with coherent detection. The bit error rate (BER) performance, block length effect and linewidth tolerance of the proposed algorithm are evaluated for a 112 Gbit/s DP-QPSK system. A linewidth symbol duration product of 2.9×10-4 is demonstrated for 1 dB optical signal-to-noise-ratio (OSNR) penalty at BER of 10-3 for the proposed algorithm. The hardware complexity of the proposed multiplier-free algorithm is demonstrated to be much lower than that of the 4th power algorithm.更多还原

【关键词】 QPSK； format； multiplier； symbol； OSNR； coherent； keying； hardware； transmitter； suffers；

【基金】 the National Natural Science Foundation of China (No.61275052);the National High-Tech Research and Development Program of China (No.2007AA01Z258);the Fundamental Research Funds for the Central Universities (No.2009YJS005);the Major State Basic Research Development Program of China (No.2010CB328206);the Beijing Nova Program (No.2008A026)

【文献出处】 Optoelectronics Letters ,光电子快报(英文版) , 编辑部邮箱 ,2013年04期

【分类号】TN761
【被引频次】3
【下载频次】48

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