Othman M B, Deng Lei, Pang Xiaodan, Caminos J, Kozuch W, Prince K, Yu Xianbin, Jensen Jesper Bevensee, Monroy I Tafur
DTU Fotonik, Department of Photonics Engineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.
Opt Express. 2011 Dec 12;19(26):B537-42. doi: 10.1364/OE.19.00B537.
We report on experimental demonstration of 2x2 MIMO-OFDM 5.6-GHz radio over fiber signaling over 20 km WDM-PON with directly modulated (DM) VCSELs for femtocells application. MIMO-OFDM algorithms effectively compensate for impairments in the wireless link. Error-free signal demodulation of 64 subcarrier 4-QAM signals modulated at 198.5 Mb/s net data rate is achieved after fiber and 2 m indoor wireless transmission. We report BER of 7x10(-3) at the receiver for 16-QAM signals modulated at 397 Mb/s after 1 m of wireless transmission. Performance dependence on different wireless transmission path lengths, antenna separation, and number of subcarriers have been investigated.
我们报告了在20公里波分复用无源光网络（WDM-PON）上，采用直接调制（DM）垂直腔面发射激光器（VCSEL）实现用于毫微微蜂窝应用的2×2多输入多输出正交频分复用（MIMO-OFDM）5.6吉赫兹光纤无线信号传输的实验演示。MIMO-OFDM算法有效补偿了无线链路中的损伤。在经过光纤和2米室内无线传输后，实现了对以198.5兆比特/秒净数据速率调制的64个子载波4正交幅度调制（4-QAM）信号的无差错信号解调。我们报告了在1米无线传输后，接收端对于以397兆比特/秒调制的16-QAM信号的误码率为7×10⁻³。研究了性能对不同无线传输路径长度、天线间距和子载波数量的依赖性。
