Digital feedforward carrier phase estimation for PSK Y-00 quantum-noise randomized stream cipher
Digital feedforward carrier phase estimation for PSK Y-00 quantum-noise randomized stream cipher
复制标题
PSK Y-00 量子噪声随机流密码的数字前馈载波相位估计
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
O. Hirota
中科院分区：
文献类型：
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作者：
K. Tanizawa;F. Futami;O. Hirota
光纤传输中的加密是现代通信系统中遗留的问题之一。解决方案之一是使用Y-00量子噪声随机流密码。本文提出了一种带Y-00解密过程的前馈载波相位估计（CPE）方法，用于相移键控（PSK）Y-00信号的数字相干检测。Y-00信号在数字域解密后，通过计算信号复振幅的M次方来估计载波相位。对10-Gbaud PSK Y-00信号的数值仿真表明，具有解密过程的前馈CPE，由共享密钥的合法接收机使用，成功地跟踪相位噪声。从而实现了Y-00信号的无惩罚解调。
: Encryption in fi ber-optic transmission is one of remaining issues in modern communication systems. One of the solutions is to use Y-00 quantum-noise randomized stream cipher. In this paper, we propose feedfor-ward carrier phase estimation (CPE) with Y-00 decryption process for digital-coherent detection of phase-shift keying (PSK) Y-00 signal. After decryption of Y-00 signal in a digital domain, carrier phase is estimated by calculating Mth power of signal complex amplitude. Numerical simulations for 10-Gbaud PSK Y-00 signal show that the feedforward CPE with decryption process, which is used by a legitimate receiver who shares keys, successfully tracks phase noise. Consequently, penalty-less demodulation of Y-00 signal is achieved.