NARROW-BAND INTERFERENCE SUPPRESSION IN SPREAD SPECTRUM COMMUNICATION-SYSTEMS

被引：3

作者：

ACHILLES, D

LI, DN

机构：

[1] Universität Kaiserslautern, W-6750 Kaiserslautern

来源：

SIGNAL PROCESSING | 1991年 / 24卷 / 01期

关键词：

COMMUNICATION SIGNAL PROCESSING;

D O I：

10.1016/0165-1684(91)90084-V

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper the rejection of a narrow-band interference in DS (direct-sequence) spread spectrum communication systems by a digital filter is explored. A method for estimating the dominant frequency of the interference is presented. According to the estimated frequency the filter coefficients of a bandpass error filter are generated such that its centre frequency is at the estimated one. This error filter is realized by a recursive structure with only six multiplications and is approximately of zero phase. The interference is suppressed by compensating the non-filtered signal with the filtered one. A method to extract the characteristics of the different type of interferences also presented in order to adjust the filter to make it suitable for their rejection. The performances of the filter in the environment of a white Gaussian noise and a narrow-band interference such as single-tone, swept-tone and narrow-band Gaussian interferences are simulated by computer, which shows that by using the given filter, the system performance can be greatly improved.

引用

页码：61 / 76

页数：16

共 16 条

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