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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。
Through software simulation, this paper proposes UWB transmission technology with adaptive PPM modulation. It is based on channel estimation. Based on the BER statistics of the received signal received by the receiving end, the channel state information is transmitted to the transmitting end by using the reverse channel to make it adaptively change the displacement dPPM according to the bit error rate requirement, To meet the requirements of the receiver bit error rate, improve the system’s transmission efficiency. This method opens up a new idea for overcoming channel fading in UWB communication system.