摘要
为了满足未来空间高速通信的迫切需求,进行了W波段（75～110 GHz）无线高速通信的研究.通信系统中采用光子上变频技术产生传输速率为20 Gbit/s的W波段QPSK信号,解决了电子器件带宽受限的瓶颈问题.在接收机端采用模拟下变频和先进数字信号处理技术,实现了无线传输360m距离后信号的离线解调.最终系统的误码率小于硬判决前向纠错（FEC）门限3.8＆#215;10-3.
In order to meet the demand of future high-speed space communication, a high-speed wireless communicationsystem at W band （75-110 GHz） was investigated. For solving the bottlenecks of bandwidth-constrained electrical com-ponents, the communication system adopted photonic up-conversion technology to generate 20 Gbit/s W-band quadraturephase shift keying （QPSK） signal At the receiver, analog down-conversion and advanced digital signal processing tech-nology were adopted to realize the off-line signal demodulation after 360 m wireless transmission. The bit error rate（BER） of the system is less than the hard-decision forward error correction （HD-FEC） threshold of 3.8 x 10^-3.
出处
《通信学报》
EI
CSCD
北大核心
2014年第10期17-22,共6页
Journal on Communications
基金
国家自然科学基金资助项目(61325002
61250018)
上海市科委基金资助项目(13JC1400700
12dz1143000)~~
关键词
W波段
光子上变频
QPSK信号
无线通信
W-band
photonic up-conversion
QPSK signal
wireless communication
