自干扰

This paper researches the principal and normal structure of adaptive interference chancellor, discussing the LMS adaptive filter algorithm and it's anamorphosis algorithm that is used in adaptive interference chancellor.

本文研究了自适应干扰对消的原理和一般结构，讨论了用于自适应干扰对消的LMS自适应滤波算法及其变形算法。

Firstly, it discusses the principle of adaptive interference chancellor, including broad band signal and narrow band signal; Secondly, it analysises one common algorithm used in adaptive interference chancellor, that is, LMS algorithm and its anamorphosis algorithm especially normalized LMS algorithm pointing out their relationship. After then, the paper talks about the structure and reality of canceling broad band noise in narrow band signal and narrow band noise in broad band signal and gives it's result simulation analyzing the factors affecting the power of the algorithm. In the last party, it gives the hardware design and assembly language software design using TMS32OC3 1, including the result of simulating.

首先，本文讨论了自适应干扰对消的原理，并对窄带信号和宽带信号两种进行了分别分析；然后本文对自适应干扰对消中常用的算法—LMS算法进行了分析，同时也讨论了LMS算法的变形算法，尤其是归一化LMS算法，并指出了这些算法的相同和不同之处；此后，本文讨论了窄带信号中的宽带干扰对消和宽带信号中的窄带干扰对消的结构及实现方法并给出了住址的结果，分析了影响干扰对消效果的因素；在论文的最后，给出了用TMS320C31实现窄带信号中的宽带干扰对消的硬件设计和汇编程序设计，以及汇编语言程序的结果，并就此结果与高级语言程序的结果作了比较。

This paper proposes a non-linear adaptive filtering method based on analyzing the performance of the conventional adaptive methods in the cases of that the NBI can be modeled as a single tone,an autoregressive stochastic process or narrow band BPSK digital modulation signals.

在分析线性自适应滤波抑制单频干扰、自回归过程窄带干扰和窄带BPSK调制信号干扰的性能的基础上，提出了一种非线性自适应波抑制方法。

The characteristic parameters of interferences are obtained by FRFT. Then the adaptive interference canceler is designed according to the estimated interference parameters.

该方法首先对观察信号进行FRFT，估计干扰的特征参数，利用估计出的干扰参数构造自适应干扰对消器，将干扰去除。

The spatial nulling is implicitly achieved by estimating a sample covariance matrix and feeding its inverse into the extended Kalman filter. Computer simulations demonstrate robust performance of the algorithm in severe jamming.

针对多元天线接收机，提出了空时自适应信号处理算法，建立基于EKF自适应滤波技术的抗干扰模型，分析表明：在J／S即干扰／信号为60dB时，能较好的抑制窄带和宽带干扰作用。

Firstly, the performances of linear and nonlinear algorithms based on interference estimator/subtracter are compared. Secondly, a novel interference suppression algorithm based on subspace tracking is proposed for the tone interference model. Finally, the stability performance of the transform domain normalized least mean square adaptively implementing structure of minimum bit error ratio receiver is analyzed.

总结和比较了基于AR干扰模型的各种干扰估计抵消算法性能；从音调干扰模型出发，提出一种新的基于子空间跟踪的时域干扰抑制技术；讨论了基于低速数字干扰等效"虚拟"多用户干扰模型的最小误码率接收机的变换域归一化最小均方自适应实现结构及其稳态性能。

WCDMA system is a self-interference system. Its capacitance is limited by the interference the current subzone receives.

WCDMA系统是一个自干扰的系统，它的容量是由当前小区接收到的干扰所限制的。

Because the biggest characteristic of ECG and pulse signals is very weak, vulnerably to external signal interference, such interference, mainly caused by mobile electrode baseline drift (generally less than 1Hz), power-frequency interference (50Hz), EMG Interference.

由于心电信号和脉搏信号最大特点就是信号十分微弱，容易受到外部信号的干扰，这些干扰主要来(来源：7bABC论文网www.abclunwen.com)自电极移动引起基线漂移(一般小于1Hz)，电源工频干扰(50Hz)，肌电干扰。

This invention relates to three-dimensional seismic data processing quality monitoring technology. Selecting time-window and analysis frequency for FFT to obtain frequency-domain conversion result for every channel; taking mean-filter to obtain the statistic excited energy or noise disturbance; plotting all results on plane graph to monitor the 3D excited energy or noise disturbance; taking normalization and autocorrelation to all earthquake channel; summating all autocorrelation statistic result to obtain opposite statistic autocorrelation result; finding out and plotting the zero-crossing of autocorrelation on plane position for monitoring excited wavelet.

本发明涉及一种三维地震资料处理质量监控技术，步骤是：选定时窗和分析频率；对某炮各地震道在时窗内做快速富立叶变换，得到道数据在频率域变换结果；对同炮的所有地震道做频率域中值滤波，得到该炮的统计激发能量或噪声干扰量结果；将所有炮的计算结果绘到各炮点平面图上，监控三维激发能量或噪声干扰；对地震数据某炮的各地震道做归一化自相关；对同炮的所有地震道的自相关统计求和，得到该炮的统计自相关结果；寻找该炮统计自相关的零交叉时，将所有炮的零交叉时绘到各炮点平面位置上，完成激发子波监控。

In this thesis, some characteristics are summarized in WCDMA radio network, such as multi-service and multi-bit ratio, soft handover factor , cell breathing, pilot frequency pollution, self-interference specialty and so on, and at the same time, an in-depth analysis of the difference of WCDMA and GSM in the radio network planning is carried out.

本文概述了WCDMA无线网络多业务多速率、软切换因子、小区呼吸、导频污染、自干扰特性等特点，分析和探讨了WCDMA与GSM无线网络规划的区别。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失