Description: 线性自适应预测滤波算法，用于扩频通信中的窄带干扰信号的抑制，对搞窄带干扰抑制的朋友会有所帮助！-linear adaptive filter algorithm forecast for the spread spectrum communication signals in the narrow band interference suppression to engage narrowband interference suppression friends will help! Platform: |
Size: 849 |
Author:高丽 |
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Description: 线性自适应预测滤波算法，用于扩频通信中的窄带干扰信号的抑制，对搞窄带干扰抑制的朋友会有所帮助！-linear adaptive filter algorithm forecast for the spread spectrum communication signals in the narrow band interference suppression to engage narrowband interference suppression friends will help! Platform: |
Size: 1024 |
Author:高丽 |
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Description: 直接序列扩频Matlab程序
直接序列扩频通信可以有效地抵抗来自信道中的窄带干扰。在一个直扩通信系统中,扩频是通过伪噪声序列(PN)对发送的信息数据进行调制来实现的。在接收端,原伪噪声序列和所收信号的相关运算可将窄带干扰扩展到DS信号的整个频带,使干扰等效为幅度较低频谱较平坦的噪声；同时，将DS信号解扩,恢复原始信息数据。-Matlab procedures for direct sequence spread spectrum direct sequence spread spectrum communications can effectively resist the narrow-band interference from the channel. In a DSSS communication systems, spread spectrum pseudo-noise sequence through (PN) for sending information data modulation is achieved. At the receiving end, the original pseudo-noise sequence and the received signal related to computing can be extended to narrow-band interference signal DS the whole band, so interference is equivalent to a lesser extent than the flat spectrum of noise At the same time, the DS signal despreading and restore original information data. Platform: |
Size: 1024 |
Author:周一 |
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Description: 扩频通信中遭遇到了窄带干扰后，系统的仿真-Spread Spectrum Communication encountered a narrow-band interference, the system simulation Platform: |
Size: 1024 |
Author:晓敏 |
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Description: 扩频通信中对强窄带干扰进行变换域预测后系统的误码率-Spread Spectrum Communication strong narrow-band interference in transform domain to predict system bit error rate after Platform: |
Size: 1024 |
Author:晓敏 |
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Description: UWB脉冲设计与窄带干扰抑制
为了避免对频带内已有的窄带通信系统造成干扰，在进行波形设计时，如果能使UWB脉冲在干扰频带内的能量下降，即在窄带通信系统的工作频带内实现陷波，则可达到抑制窄带干扰的目的。-UWB pulse design and narrow-band interference suppression in order to avoid the narrow band communication systems has been caused by interference, in waveform design, if the UWB pulse can interfere with the band in the energy decline, that is, in the narrow-band communications system to achieve Notch can be inhibited to achieve the purpose of narrow-band interference. Platform: |
Size: 51200 |
Author:刘卫菠 |
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Description: 1.设计自适应信号分离器，用以从白噪声中提取周期信号。其中选取正弦信号s=sin(2*pi*t/10)为周期信号，宽带噪声信号为高斯白噪声，设置参考通道延迟为50。
2.宽带信号中的窄带干扰抑制实际上是自适应信号分离的一种应用，借助自适应信号分离器可以方便的实现窄带干扰的对消。-1. Design of adaptive signal separator, used to extract from the white noise periodic signal. The extraction of sinusoidal signals s = sin (2* pi* t/10) for periodic signals, broadband noise signal is Gaussian white noise, set the reference channel delay of 50.
2. Wideband signals in the narrow-band interference suppression is actually an application of adaptive signal separation, using adaptive signal separator can be easily achieved narrowband interference cancellation. Platform: |
Size: 1024 |
Author:wanchun |
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Description: Any Band-Pass filter may be converted into a tunable filter with
a single tuning parameter through the use of a new Tunable
Heterodyne Band-Pass Filter concept in which the frequency of
the heterodyne signal is adjusted thereby translating the entire
filter transfer function in frequency. If the fixed filter is
selected to be a narrow-band band-pass filter, the new Tunable
Heterodyne Band-Pass Filter concept can be used very
effectively in the elimination of narrow band interference in
wide-band communications or control systems. A single-chip
version of this tunable filter can be constructed using a Xilinx
Virtex XCV800 chip. The resulting filter is a flexible tunable
band-pass filter that can be varied from DC to n/2 or from n/2
to n depending on the parameters of the fixed output low-pass
filter. Platform: |
Size: 333824 |
Author:rakesh |
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Description: 针对混沌参数调制( C P M) 的电力线通信( P L C) 中谐波引起的窄带干扰， 两阶段动态估计方法根据最小
相空间体积( MP S V) 准则估计模型参数， 计算量大。为此， 提出将未知参数合并到增广状态矩阵的联合卡尔曼滤
波方法， 避免了专门的参数估计过程， 在提高增益性能的同时有效降低了计算量。方法的性能通过对混沌电力
线通信下的单音干扰和多音干扰的有效抑制得到了验证。-For the chaotic parameter modulation (CPM) of the power line communication (PLC) in the narrow-band interference caused by harmonics, two-phase dynamic estimation methods with minimum phase space volume (MP SV) criterion estimate model parameters, calculation of volume. Toward this end, the unknown parameters into augmented state matrix of the joint Kalman filter, to avoid the special parameter estimation process, while improving the performance gain reduces the amount of calculation. Method of performance under the power line communication by chaotic multitone jamming tone interference and the effective suppression has been verified. Platform: |
Size: 272384 |
Author:张海洋 |
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Description: This simple Matlab function simulates a innovative algorithm for narrow band interference mitigation for wireless communications, esp for satellite comm. The algorithm looks similar to LMS, but error is non-linearly transformed.
It works well and a hardware demonstration was successfully fulfilled on Altera FPGA development platform.
More details on algorithm refers to "Nonlinear Techniques for Interference Suppression in Spread Spectrum Systems" by R. Vijayan. Platform: |
Size: 1024 |
Author:徐滨 |
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Description: 码分多址(CDMA)技术作为第三代移动通信系统的核心技术，具有容量大、抗干扰能力强等优点。然而,传统的CDMA系统属于窄带扩频系统,它的数据速率比较低,不能胜任新一代移动通信系统
（beyond 3G）高速数据通信的需要。而多载波传输技术－正交频分复用（OFDM），作为后三代移动通信的核心技术，则具有高数据速率传输的特点。-Code Division Multiple Access (CDMA) technology as the third generation mobile communication system' s core technology, high capacity, anti-interference ability and so on. However, the traditional narrow-band CDMA system is spread spectrum system, and its relatively low data rate, can not do next-generation mobile communication systems (beyond 3G) high speed data communication needs. The multi-carrier transmission technology- orthogonal frequency division multiplexing (OFDM), after three generations of mobile communications as a core technology, the high data rate transmission characteristics. Platform: |
Size: 774144 |
Author:w |
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Description: 通过设置和实际情况相接近的干扰信号、期望信号以及噪声信号参数，来仿真采样
矩阵求逆算法、单星约束下的最小输出功率算法、单星无约束下的最小输出功率
算法分别于单星信号在单个宽带干扰信号、单个窄带干扰信号和复杂电磁干扰信
号存在时的干扰抑制性能，得出在强干扰条件下算法由优到劣的顺序是采样矩阵
求逆算法、单星约束下的最小输出功率算法和单星无约束下的最小输出功率算法，
弱干扰条件下单星无约束下的最小输出功率算法失效等结论。-By setting and close to the actual situation of the interference signal, the desired signal and noise parameters, to simulate the sample matrix inversion algorithm, the minimum under the constraint of a single satellite output power algorithm, a single star without constraints, respectively, the minimum output power algorithm for single-star signal in a single-band interference signals, a single narrow-band interference signals and complex signals in the presence of electromagnetic interference interference suppression performance, obtained under conditions of strong interference by the algorithm is superior to the inferior order of the sampling matrix inversion algorithm, the smallest single-star constraints output power algorithm and the constraints of a single star without a minimum output power algorithm, the weak non-interference conditions, under the constraint of single-star minimum output power algorithm such as the failure conclusions. Platform: |
Size: 2198528 |
Author:赵亮 |
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Description: 基于最大熵PDF估计的DSSS系统抗窄带干扰技术Based on the maximum entropy estimation system of PDF DSSS narrow-band interference excision technique-Based on the maximum entropy estimation system of PDF DSSS narrow-band interference excision technique Platform: |
Size: 670720 |
Author:bao163 |
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Description: 直接序列扩频Matlab程序源码 直接序列扩频通信能有效地抵抗来自信道中的窄带干扰。在一个直扩通信系统中，扩频是通过伪噪声序列(PN)对发送的信息数据进行调制来实现的。在在接收端，原伪噪声序列与所收信号的的相关运算可将窄带干扰扩展到DS信号的整个频带，使干扰等效为幅度较低频谱较平坦的噪声；同时，将DS信号解扩，恢复原始信息数据。 可直接使用。
-Direct Sequence Spread Spectrum Matlab program source code direct sequence spread spectrum communication can effectively resist the narrow-band interference from the channel. In a DSSS communication systems, spread spectrum modulation to send information and data by the pseudo-noise sequence (PN). At the receiving end, the original pseudo-noise sequence and the received signal computing narrowband interference extended to the entire frequency band of the DS signal, interference equivalent to a lesser extent the relatively flat spectrum noise the same time, the DS signal despreading restore the original data. Can be used directly. Platform: |
Size: 1024 |
Author:edible |
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Description: narrow-band interference suppression in order to avoid the narrow band communication systems has been caused by interference Platform: |
Size: 2048 |
Author:Elahmar |
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Description: 最小二乘窄带干扰消除。有用信号是一个点状目标，产生窄带干扰采样，产生高斯白噪声，设计一个M=100个系数的单步(D=1)线性预测器，再用得到的线性预测器来消除图中被干扰的信号x(n)中的噪声。-Least Squares narrowband interference cancellation. The useful signal is a target point, narrow-band interference is sampled Gaussian white noise, the design of a M = 100 coefficients in a single step (D = 1) linear predictor, then the obtained linear prediction filter to eliminate the interference graph the signal x (n) the noise. Platform: |
Size: 1024 |
Author:susan |
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Description: OFDM channel Using a large number of parallel narrow-band subcarriers instead of a single wide-band carrier to transport information
l Advantages
» Very easy and efficient in dealing with multi-path
» Robust again narrow-band interference
-OFDM channel Using a large number of parallel narrow-band subcarriers instead of a single wide-band carrier to transport information
l Advantages
» Very easy and efficient in dealing with multi-path
» Robust again narrow-band interference
Platform: |
Size: 1636352 |
Author:ajay |
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Search - narrow band interference