提出一种新的基于单个强度调制器的D波段矢量毫米波产生方法。研究基于强度调制器,通过预编码技术,产生了八倍频D波段矢量毫米波信号,信号经过一定距离的无线传输之后输入接收端,最后对信号进行解调和误码分析。该方法具有一定的中心载波抑制功能,在无光学滤波器下成功传输了信号,降低了光载无线系统的链路成本。实验验证了152 GHz 4 GBaud正交相移编码(QPSK)信号的产生和传输,经过1 m的无线传输后,接收到的QPSK信号的误码率低于软判决前向纠错门限阈值(1.0×10 -2)。

In this paper, we proposed a new scheme to generate D-band mm-wave vector signals based on an intensity modulator. With this scheme, the eight-fold-frequency D-band mm-wave vector signals were generated based on an intensity modulator and the precoding technology. After wireless transmission for a certain distance, the signals were input to the receiving end, and then were demodulated and analyzed for error. Due to the center-carrier suppression of the scheme, the signals were successfully transmitted without the assistance of any optical filter, greatly reducing the link cost of the radio-over-fiber system. Furthermore, we experimentally demonstrated the generation and transmission of 152 GHz 4 GBaud quadrature phase shift keying (QPSK) signals, and the bit error rate of the QPSK signals received after 1 m wireless transmission was lower than the threshold of soft-decision forward error correction (1.0×10 ^-2).