摘要
分析了超宽带冲激无线电的脉位调制、通断键控调制和脉冲幅度调制的信号模型。阐述了UWB通信的传输速率高、保密性能好和抗多径衰落强等优点。推导了UWB通信信号的时域和功率谱密度闭式表达式,并对UWB通信信号频谱进行了分析,并对实际UWB通信信号的功率谱密度进行了计算机仿真。
The ultra wideband （UWB） radio models have been introduced with pulse-positionmodulation （PPM）, on-off-keying （OOK） and pulse-amplitude-modulation （PAM）. The advantages of UWB communication have been set forth such as very high transformation rates, excellent security, fading against multi-path, and so on. The closed form expression of the time domain and power spectrum density has been derived, and the power spectrum has been analyzed for the signal of UWB communication, and the power spectrum of the real signal of UWB communication has been simulated by computer.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
2005年第4期437-439,451,共4页
Journal of University of Electronic Science and Technology of China
关键词
超宽带
无线宽带通信
功率谱密度
频谱分析
ultra wide-band
wireless wide-band communication
power spectrum density
spectrum analysis
