在GSM下行链路频段的干扰下TH-UWB和DS-UWB的性能比较  

Performance comparison between TH-UWB and DS-UWB in interference at GSM downlink band

作　　者：赵同明[1] 

机构地区：[1]中国电波传播研究所,山东青岛266107

出　　处：《现代电子技术》2013年第17期33-36,共4页Modern Electronics Technique

摘　　要：研究了存在窄带干扰的AWGN信道中TH UWB和DS UWB信号的性能,窄带干扰是由GSM下行链路频段造成的。首先介绍了基于TH和DS技术的系统模型,最后给出了误码率和信噪比的性能曲线。两种UWB技术都是把一个信息比特扩展到多个连续窄脉冲上,发射UWB脉冲是用普通高斯脉冲的一阶导数和三阶导数,数据调制是用BPAM方式。结果显示TH UWB的性能稍好于DS UWB系统,高斯脉冲三阶导数性能好于一阶导数。The performances of TH-UWB and DS-UWB signals in AWGN channel with narrowband jamming caused at the GSM downlink band is studied. System models based on time hopping and direct sequence concepts are introduced. Performance curves of bit error rate and signal-to-noise ratio are offered in this paper. Both of the UWB technologies spread one information bit to the numerous consecutive narrow pulses. The first-order and third-order derivatives of a generic Ganssian pulse are used to emit the UWB pulse. The data modulation is based on the BPAM mode. The results show that the performance of TH-UWB is slightly better than that of DS-UWB. The performance of the third-order derivative of Gaussian pulse is better than that of the first-order derivative of Gaussian pulse.

关 键 词：TH—UWB DS—UWB GSM BER 窄带干扰 

分 类 号：TN914.3[电子电信—通信与信息系统]