| 含噪相干态信号的量子最优检测 |
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| 引用本文： | 余文斌,郑宝玉. 含噪相干态信号的量子最优检测[J]. 南京邮电大学学报(自然科学版), 2014, 34(5): 17-21 |
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| 作者姓名： | 余文斌 郑宝玉 |
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| 作者单位： | 南京邮电大学信号处理与传输研究院,江苏南京,210003 |
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| 基金项目： | 国家自然科学基金，教育部博士点专项科研基金 |
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| 摘 要： | 在光频率级别的通信中,量子效应成为显著通信差错的来源,一种代替经典检测的手段是正交投影测量.文中基于二进制相干态信号,在考虑热噪声场的情形下,给出了在热噪声场背景下的二进制相干态信号的量子最优检测.最后的数值结果给出了OOK（On-Off Keying）调制和BPSK（Binary-Phase-Shift-Keyed）调制下量子检测的差错概率,验证了量子最优检测在热噪声场背景下的性能优势.
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| 关 键 词： | 量子测量 量子检测 相干态 光通信 |
Quantum Optimum Detection of Coherent-state Signal in Presence of Thermal Noise Fields |
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| YU Wen-bin,ZHENG Bao-yu. Quantum Optimum Detection of Coherent-state Signal in Presence of Thermal Noise Fields[J]. JJournal of Nanjing University of Posts and Telecommunications, 2014, 34(5): 17-21 |
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| Authors: | YU Wen-bin ZHENG Bao-yu |
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| Affiliation: | ( Institute of Signal Processing and Transmission, Nanjing University of Posts and Telecommunications, Nanjing 210003, China) |
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| Abstract: | At optical frequencies, quantum effects become the dominant source of errors. One of the useful methods replacing the classical detection is orthogonal projection measurement. Based on the binary coherent-state signal, this paper proposes a method for the quantum optimum detection in the presence of the thermal noise fields. Numerical results give the error probability of the quantum detection for OOK and BPSK signal. The superiority of quantum optimum detection is proved on the communication performance in the presence of the thermal noise fields. |
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| Keywords: | quantum measurement quantum detection coherent state optical communication |
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