摘要
通过软件仿真,文中提出自适应PPM调制的UWB传输技术。它是建立在信道估计的基础之上,通过接收端对收信号的BER统计,利用反向信道将信道状态信息传送给发送端,使其根据误码率要求自适应地改变的位移量dPPM,以满足在接收端误码率的要求下,提高了系统的传输效率。该方法为UWB通信系统中克服信道衰落开辟了一条新思路。
The UWB transmission techniques based on adaptive PPM modulation（AM） is proposed through software simulation. It is established on the basis of channel estimation, and by using a feedback channel to send the channel state information （CSI） to transmitter, dPPM is adaptively adjusted according to BER requirement. AM could improve the spectral efficiency（SE）of UWB in satisfying the requirement of received BER. This method opens up a new way for overcoming the fading channel in UWB communication system.
出处
《通信技术》
2009年第7期66-68,共3页
Communications Technology
