▍1. 循环谱代码 应用于盲分离信号处理
循环谱代码,应用于盲分离信号处理。非常适用于初学者,代码完整,仿真结果正确。(Cyclic spectrum code)
循环谱代码,应用于盲分离信号处理。非常适用于初学者,代码完整,仿真结果正确。(Cyclic spectrum code)
说明: 分别用M序列gold序列正交gold序列设计直接序列扩频通信系统并分析误码率(Using m-sequence gold sequence orthogonal gold sequence to design DSSS communication system and analyze the bit error rate)
说明: 均匀平面天线阵列的三维极化方向图,matlab语言。(Antenna Polarization for Uniform Planar Array)
计算矩形栅格或三角栅格阵列天线栅瓣图,优化天线单元间距设计(caculate grating lobes of rectangular grid or triangular grid array)
Matlab files for various types of beamforming for custom 1D, 2D and 3D
说明: 基于均匀线阵的强干扰条件下弱信号的DOA估计,采用MUSIC算法(Based on the DOA estimation of weak signal under strong interference of uniform linear array, music algorithm is adopted)
MC-CDMA的matlab代码 包括发送,接收及通过nakagami信道(MC-CDMA, including the matlab code to send, receive and pass the Nakagami channel)
8psk 数字解调器的simulink仿真(8psk digital modem s simulink)
仿真对数正态阴影衰落和仿真了一个BPSK通信系统,并与AWGN信道下的理论误码率结果进行了比较(Log-normal Shadowing PL model;Simulate a BPSK communication system, comparing simulated with theoretical BER results under AWGN channel)
说明: 仿真对数正态阴影衰落和仿真了一个BPSK通信系统,并与AWGN信道下的理论误码率结果进行了比较(Log-normal Shadowing PL model;Simulate a BPSK communication system, comparing simulated with theoretical BER results under AWGN channel)
信号的捕获(直接序列扩频系统的matlab仿真实现,包括M,GOLD序列生成,信道建模,噪声,扩频,解扩)(Signal capture (direct sequence spread spectrum system simulation matlab implementation, including M, GOLD sequence generation, channel modeling, noise, spreading, despreading))
说明: cdma的码同步实现,使用matlab实现(Code synchronization of CDMA)
OFDM功率谱密度和OFDM子载波频谱/仿真分析OFDM信号的频谱特性和功率谱特性(The spectrum characteristics and power spectrum characteristics of OFDM signals are simulated and analyzed)
当今世界电子对抗日益激烈,对于雷达低截获和抗干扰能力的研究越来越受到关注。OFDM (Orthorgonal Frequency Division Multiplexing,正交频分复用)雷达具有大时宽带宽积、波形设计方法灵活、频谱利用率较高以及低截获性能好的特性,因此逐渐成为雷达领域的重点研究方向。除此之外,OFDM信号时域和频域波形都比较复杂,当雷达信号采用OFDM技术时,敌方很难精确估计发射信号波形和瞬时频率,使得截获机不容易分析出检测到的雷达信号。当面对敌方的欺骗式干扰时,对于同样具有大时宽带宽积的线性调频信号,OFDM信号具有更好的抗欺骗式干扰的性能,因此OFDM技术在雷达上的运用愈来愈得到关注。(As electronic warfare becomes increasingly fierce, low intercept probability radar has become an important research filed in electronic countermeasures. OFDM (Orthorgonal Frequency Division Multiplexing) radars have gradually emerged due to their high spectrum efficiency, large time-bandwidth product, flexible waveform design methods, and low intercept probability.In addition, because of the complex time-frequency characteristics of the transmitted signal in OFDM radar, the enemy is difficult to estimate the transmitted signal waveform and instantaneous frequency.When faced with enemy deception interference, OFDM signals have better anti-spoofing performance for LFM signals that also have a large time-bandwidth bandwidth product. Therefore, the use of OFDM technology in radar is attracting more and more attention. .)
说明: 当今世界电子对抗日益激烈,对于雷达低截获和抗干扰能力的研究越来越受到关注。OFDM (Orthorgonal Frequency Division Multiplexing,正交频分复用)雷达具有大时宽带宽积、波形设计方法灵活、频谱利用率较高以及低截获性能好的特性,因此逐渐成为雷达领域的重点研究方向。除此之外,OFDM信号时域和频域波形都比较复杂,当雷达信号采用OFDM技术时,敌方很难精确估计发射信号波形和瞬时频率,使得截获机不容易分析出检测到的雷达信号。当面对敌方的欺骗式干扰时,对于同样具有大时宽带宽积的线性调频信号,OFDM信号具有更好的抗欺骗式干扰的性能,因此OFDM技术在雷达上的运用愈来愈得到关注。(As electronic warfare becomes increasingly fierce, low intercept probability radar has become an important research filed in electronic countermeasures. OFDM (Orthorgonal Frequency Division Multiplexing) radars have gradually emerged due to their high spectrum efficiency, large time-bandwidth product, flexible waveform design methods, and low intercept probability.In addition, because of the complex time-frequency characteristics of the transmitted signal in OFDM radar, the enemy is difficult to estimate the transmitted signal waveform and instantaneous frequency.When faced with enemy deception interference, OFDM signals have better anti-spoofing performance for LFM signals that also have a large time-bandwidth bandwidth product. Therefore, the use of OFDM technology in radar is attracting more and more attention. .)
说明: 前已提出的频谱感知方法主要包括匹配滤波器检测、 能量检测、 循环平稳特征检测以及多分辨率频谱感知. 这些方法均为单节点感知方法.然而,在阴影和深度衰落情况下, 单个节点的感知结果并不可靠, 因此, 需要对多个节点的感知结果进行融合,以提高检测可靠性, 即协作感知技术. 文献采用“或” 准则对各个 CR 感知结果进行融合. 文献则提出了基于 D-S 证据理论的协作频谱感知算法,虽然该算法的性能比“或” 准则或“与”准则要好, 但需要存储大量历史信息, 算法的计算复杂度也很高. 文献中分析了采用似然比检测(likelihood ratio test, LRT) 的软判决与采用“与” 准则的硬判决的性能, 结果表明采用软判决的协作感知性能更优(Previously proposed spectrum sensing methods mainly include matched filter detection, energy detection, cyclostationary feature detection and multi-resolution spectrum sensing. These methods are all single node sensing methods. However, in the case of shadow and deep fading, the sensing results of single node are not reliable, so, It is necessary to fuse the sensing results of multiple nodes to improve the detection reliability, i.e. cooperative sensing technology. In the literature, "or" criterion is used to fuse the CR sensing results. In the literature, a cooperative spectrum sensing algorithm based on D-S evidence theory is proposed. Although the performance of the algorithm is better than "or" criterion or "and" criterion, a large amount of historical information needs to be stored, The computational complexity of the algorithm is also very high. In the literature, the performance of the soft decision based on the likelihood ratio test)
利用matlab自适应滤波器实现心电信号的去噪 自适应滤波器 心电图(De-Noising of Electrocardiogram (ECG) with Adaptive Filter Using MATLAB)
说明: 利用matlab自适应滤波器实现心电信号的去噪 自适应滤波器 心电图(De-Noising of Electrocardiogram (ECG) with Adaptive Filter Using MATLAB)