提出并计算机仿真证明了基于二级光电双臂相干调制及双二进制光信息编码技术实现超高速超长距离光纤微波传输(Radio over Fiber)的系统设计方案.通过第一级光电双臂相干调制构建光双二进制信号,其信号占用频谱带宽比NRZ码降低50%.通过...提出并计算机仿真证明了基于二级光电双臂相干调制及双二进制光信息编码技术实现超高速超长距离光纤微波传输(Radio over Fiber)的系统设计方案.通过第一级光电双臂相干调制构建光双二进制信号,其信号占用频谱带宽比NRZ码降低50%.通过第二级光电双臂相干调制加载40 GHz超高频载波信号,实现光纤微波传输.计算机仿真结果分析表明:CW激光光源发射功率为0 d Bm,经过多级EDFA光信号放大与色散补偿光纤,在色散系数为17 ps/(nm·km),衰减系数为0.2 d B/km的标准单模光纤中单通道传输,系统码元传输速率可达40 Gb/s、传输距离1 500 km以上.展开更多
Strong limit theorems are established for weighted sums of widely orthant dependent（WOD） random variables. As corollaries, the strong limit theorems for weighted sums of extended negatively orthant dependent（ENOD）...Strong limit theorems are established for weighted sums of widely orthant dependent（WOD） random variables. As corollaries, the strong limit theorems for weighted sums of extended negatively orthant dependent（ENOD） random variables are also obtained, which extend and improve the related known works in the literature.展开更多
文摘提出并计算机仿真证明了基于二级光电双臂相干调制及双二进制光信息编码技术实现超高速超长距离光纤微波传输(Radio over Fiber)的系统设计方案.通过第一级光电双臂相干调制构建光双二进制信号,其信号占用频谱带宽比NRZ码降低50%.通过第二级光电双臂相干调制加载40 GHz超高频载波信号,实现光纤微波传输.计算机仿真结果分析表明:CW激光光源发射功率为0 d Bm,经过多级EDFA光信号放大与色散补偿光纤,在色散系数为17 ps/(nm·km),衰减系数为0.2 d B/km的标准单模光纤中单通道传输,系统码元传输速率可达40 Gb/s、传输距离1 500 km以上.
基金Supported by the National Natural Science Foundation of China (Grant No.11271161)
文摘Strong limit theorems are established for weighted sums of widely orthant dependent（WOD） random variables. As corollaries, the strong limit theorems for weighted sums of extended negatively orthant dependent（ENOD） random variables are also obtained, which extend and improve the related known works in the literature.
