Adaptive time-varying cancellation of wideband interferences in spread-spectrum communications based on time-frequency distributions

被引：65

作者：

Barbarossa, S ^{[1
]}

Scaglione, A ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dept Informat & Commun, Rome, Italy

来源：

IEEE TRANSACTIONS ON SIGNAL PROCESSING | 1999年 / 47卷 / 04期

关键词：

interference suppression; spread spectrum communication; time-varying filters;

D O I：

10.1109/78.752594

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：

The aim of this paper is to propose an adaptive method for suppressing wideband interferences in spread spectrum (SS) communications. The proposed method is based on the time-frequency representation of the received signal from which the parameters of an adaptive time-varying interference excision filter are estimated. The approach is based on the generalized Wigner-Hough transform as an effective way to estimate the instantaneous frequency of parametric signals embedded in noise. The performance of the proposed approach is evaluated in the presence of linear and sinusoidal FM interferences plus white Gaussian noise in terms of SNR improvement factor and bit error rate (BER).

引用

页码：957 / 965

页数：9

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