Array processing for nonstationary interference suppression in DS/SS communications using subspace projection techniques

Y Zhang, MG Amin - IEEE Transactions on Signal Processing, 2001 - ieeexplore.ieee.org
Combined spatial and time-frequency signatures of signal arrivals at a multisensor array are
used for nonstationary interference suppression in direct-sequence spread-spectrum …

Method and system for temporal autocorrelation filtering

CP Gossett, MA Gunter - US Patent 7,352,833, 2008 - Google Patents
An autocorrelation filter for use with a spread spectrum receiver. The autocorrelation filter
can be used as a prefilter stage to reduce phase distortion present in a spread spectrum …

Extension of the Capon's spectral estimator to time–frequency analysis and to the analysis of polynomial-phase signals

MT Özgen - Signal processing, 2003 - Elsevier
Incorporation of the linear time-varying filter and its Zadeh's generalized transfer function
concepts to the derivation of the Capon's minimum-variance spectral estimator leads to a …

A time-varying Prony method for instantaneous frequency estimation at low SNR

AA Beex, P Shan - 1999 IEEE International Symposium on …, 1999 - ieeexplore.ieee.org
Most available instantaneous frequency (IF) estimation methods for frequency modulated
signals in white noise deteriorate dramatically when SNR falls below some threshold. We …

基于假设检验的FRFT 域LFM 干扰抑制

冯冀宁, 刁哲军, 杨晓波, 吴嗣亮 - 兵工学报, 2012 - co-journal.com
针对FRFT 域LFM 干扰抑制门限较难准确设置的问题, 分析了固定门限法与自适应门限法利用
FRFT 域统计量确定门限存在的缺陷. 在直接序列扩频信号与信道噪声的和近似服从高斯分布的 …

Time-varying filtering using full spectral information for soft-cancellation of FM interference in spread spectrum communications

P Shan, AA Beex - 1999 2nd IEEE Workshop on Signal …, 1999 - ieeexplore.ieee.org
Time-varying notch filters have been applied to reject FM interference in direct-sequence
spread spectrum communications. The time-varying notch filter was formed using …

An intelligent optimization approach to non-stationary interference suppression for wireless networks

L Liu - IEEE/CAA Journal of Automatica Sinica, 2019 - ieeexplore.ieee.org
In this paper, we propose a new technique to effectively suppress non-stationary
interference signal for wireless networks. This technique combines a new scheme of …

Non-stationary interference mitigation in continuous phase modulated signals using estimation subtraction

RK Pally, AA Beex - 2011 Digital Signal Processing and Signal …, 2011 - ieeexplore.ieee.org
Mitigating non-stationary narrowband interference from a continuous phase modulation
(CPM) signal is a challenge due to the correlation present in CPM signal samples. For such …

Modeling of time-varying Instanteous Frequency in a finitely correlated environment

RK Pally, AA Beex - 2009 16th International Conference on …, 2009 - ieeexplore.ieee.org
A TVAR model has been shown to perform well when applied to short data records for
instantaneous frequency (IF) estimation of frequency modulated (FM) components in white …

FM interference mitigation in a finitely correlated environment using a decorrelating time-varying autoregressive model

RK Pally, AA Beex - 2009 IEEE 10th Workshop on Signal …, 2009 - ieeexplore.ieee.org
A linear prediction error filter (PEF) formed from the coefficients of a time-varying
autoregressive (TVAR) model can be used effectively for mitigating frequency modulated …