摘要
多载波CDMA技术在无线衰落信道中传输高速数据时具有突出的优势。同时伴随着无线电网络的发展,各种基于测距定位的业务也越来越多的涌现出来。给出一种快速测距方法,利用MC-CDMA信号扩频码的频域相关性,进行精确测距,具有一定的创新性。仿真表明,该算法的抗噪声性能好,在非常低的信噪比下,具有良好的测距精度,且能通过过采样进一步提高精度,具有很好的应用前景。
Multi -carrier code division multiple access（MC -CDMA） technology has superior performance when transmitting high rate data in wireless fading channel. Meanwhile, with development of the wireless radio networks, there are more and more services based on ranging and positioning. A fast ranging method is presented. The precise range utilizes the pertinence of CDMA codes in the frequency domain. Computer simulation shows that this method is robust to the noise and has good precision for ranging at very low SNR＇s. It can improve the precision with resampling,and has a good prospect of application.
出处
《现代电子技术》
2009年第20期157-159,共3页
Modern Electronics Technique
