Suppression of multiple narrowband interferers in a spread-spectrum communication system

被引：22
|
作者：
Carlemalm, C [1 ]
Poor, HV
Logothetis, A
机构：
[1] Uppsala Univ, Div Signals & Syst, SE-75120 Uppsala, Sweden
[2] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA
[3] Ericsson Radio Syst AB, Ericsson Res, SE-16480 Stockholm, Sweden
来源：
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS | 2000年 / 18卷 / 08期
关键词：
EM algorithm; hidden Markov model; interference suppression; Kalman filter; spread-spectrum;
D O I：
10.1109/49.864002
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：
We consider the problem of estimating and suppressing many unknown independent and time-varying interferers in a spread-spectrum communication system. The interferers are assumed to be present in a wide frequency range. In order to detect, estimate, and track the interference, we use a bank of hidden Markov model filters operating in the frequency domain, The hidden Markov model filters' outputs are then used to suppress the existing interference, The computational complexity of our scheme is only linear in the number of interferers. The simulation studies show that our proposed novel schemes adapt quickly in tracking the time-varying nature of the interference.
引用
收藏
页码：1365 / 1374
页数：10
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