Full-duplex RoF link with broadband mm-wave signal in W-band based on WDM-PON access network with optical mm-wave local oscillator broadcasting
Full-duplex RoF link with broadband mm-wave signal in W-band based on WDM-PON access network with optical mm-wave local oscillator broadcasting
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DOI：
10.1016/j.optcom.2014.10.014
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发表时间：
2015-02
影响因子：
2.4
通讯作者：
Jianxin Ma;Ruijiao Zhang;Liang Yanjie;Qi Zhang;Jianguo Yu
中科院分区：
文献类型：
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作者：
Jianxin Ma;Ruijiao Zhang;Liang Yanjie;Qi Zhang;Jianguo Yu
提出了一种基于 WDM-PON-RoF 的新型全双工链路，具有光学毫米波本地振荡器广播，用于 W 频段宽带毫米波无线接入。在我们的方案中，在整个网络中分布了一个W波段通用光学毫米波本振，对下行中频光信号进行上变频，不仅通过降低每个下行链路的带宽需求来提高频谱效率，而且还减少了光纤色散带来的衰减。此外，由于非相干下变频的上行信号被调制在从下行信号中提取的重用空白光载波上，因此基站(BS)不需要光源，因此其结构被简化。数值仿真结果与理论分析吻合良好，表明所提出的基于 WDM-PON-RoF 的 W 频段无线接入全双工链路保持了良好的性能，且实施成本有效。
A novel full-duplex link with an optical mm-wave local oscillator broadcasting for broadband millimeter (mm)-wave wireless access in W-band is proposed based on the WDM-PON-RoF. In our scheme, a universal optical mm-wave local oscillator in W-band is distributed over the whole network to up-convert the downlink IF optical signal, which not only improves the spectrum efficiency by reducing the bandwidth requirement of each downlink, but also decreases the degradation caused by the fiber chromatic dispersion. Moreover, since the incoherently down-converted uplink signal is modulated on the reused blank optical carrier extracted from the downlink signal, the base stations (BSs) need no optical source, and so its structure is simplified. The numerical simulation results agree well with the theoretical analysis and show that the proposed full-duplex link for the W-band wireless access based on WDM-PON-RoF maintains good performance with cost effective implement.