Narrow band interference suppression of time reversal UWB communication system

被引：0
|
作者：
Shi C. [1 ]
Chen S. [1 ]
Li F. [1 ]
机构：
[1] School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2020年 / 42卷 / 04期
关键词：
Bit error rate (BER); Narrow band interference (NBI); Time reversal; Ultra wide band (UWB);
D O I：
10.3969/j.issn.1001-506X.2020.04.28
中图分类号：
学科分类号：
摘要：
Ultra wide band (UWB) communication systems work in the scope of 3.1~10.6 GHz spectrum with other pre-existing wireless systems. In order to prevent the interference of UWB communication systems to other systems, the federal communications commission regulations have set conditions that the indoor radiation power is under 41.3 dBm/MHz, but the UWB communication system will be seriously interfered by the narrowband systems. Aiming at this problem, an adaptive notch at the receiver is designd and derives the adaptive bandwidth equation at -3 dB. At the same time, the fastest descent algorithm is combined to find the optimal band width of the notch filter. Finally, simulation results show that the adaptive notch reduces the narrow band interference (NBI) in time reversal (TR) UWB communication system and improves the bit error rate (BER). © 2020, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：948 / 953
页数：5
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