概括
一个新的带内全双流移动前程网络使用模拟无线电-光纤和联单侧带调制. 该系统有效地分发多个射频信号,并产生毫米波信号,无需额外的设备.
科学领域:
- 光学通信是指光学通信.
- 无线网络 无线网络 无线网络
- 信号处理 信号处理
背景情况:
- 移动前程网络对于5G及以后的发展至关重要,需要高带宽和低延迟.
- 现有的解决方案面临信号干扰,复杂性和成本的挑战.
- 模拟无线电光纤 (RoF) 和先进的调制技术提供了潜在的改进.
研究的目的:
- 提出和评估一个新的带内全双重多带移动前线运输网络.
- 为了证明多个射频 (RF) 信号在单一光纤上的有效分布.
- 在无需电子上升转换的情况下,在主动天线单元 (AAU) 上实现毫米波 (mmWave) 信号生成.
主要方法:
- 采用基于密集波长分割多重复合 (DWDM) 标准的50 GHz间隔的两个光学载波器.
- 使用并行并联单侧带 (TSSB) 调制与双极化二进制相位移关键 (DP-BPSK) 调制器来消除交叉声.
- 在AAU通过选择DWDM通道,在3,30和60 GHz产生不同的射频信号.
主要成果:
- 拟议的系统成功地将多个射频矢量信号 (3,10,15 GHz) 和一个单调信号 (15 GHz) 分发到两个光学载体上.
- 毫米波信号在AAU中通过利用光载波间距来产生,从而消除了对电子上升转换的需求.
- 经过25公里的传输和分散补偿后,在接收光功率时,在-6dBm下实现了<9% (下行链接) 和<2% (上行链接) 的误差向量大小 (EVM).
结论:
- 拟议的模拟RoF多带移动前程网络有效地支持全双联操作和信号分配.
- 采用DP-BPSK调制器的TSSB调制方案有效处理多个信号并减轻交叉通话.
- 该系统在AAU产生毫米波信号的能力简化了网络架构并降低了成本.
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