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一种基于高阶累积量的数字调相信号识别方法
说明： 对当前通信信号中常用的数字调相信号BPSK、QPSK、1／4一QPSK、8PSK的调制识别问题，提出了一种基于信号差分高阶累积量的识剐算法。该算法分两个层次进行调制识别，首先利用信号的四阶累积量特征对BPSK、QPSK和{1／4一QPSK、8PSK}信号进行识别，然后再利用信号差分的四阶和八阶累积量特征对1/4-QPSK、8PSK信号进行识别。从理论上分析了的该算法的有效性，并通过计算机仿真验证了算法具有良好的性能。(A recognition algorithm based on differential high-order cumulant is proposed for the modulation recognition problems of BPSK, QPSK, 1/4-QPSK and 8PSK, which are commonly used in current communication signals. The algorithm is divided into two levels for modulation recognition. Firstly, BPSK, QPSK and {1/4-QPSK, 8PSK} signals are identified by using the fourth-order cumulant characteristics of signals, and then 1/4-QPSK and 8PSK signals are identified by using the fourth-order cumulant and eighth-order cumulant characteristics of signal difference. The validity of the algorithm is analyzed theoretically, and the good performance of the algorithm is verified by computer simulation.)
- 2020-06-21 09:40:02下载
- 积分：1
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瑞利衰落和莱斯衰落信道模型
说明： 这是瑞丽衰落信道模型和莱斯衰落信道模型的代码。(This is the code of Rayleigh fading channel model and Rice fading channel model)
- 2020-06-17 12:00:01下载
- 积分：1
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北斗导航接收机抗干扰算法研究_陈亚男
说明： 基于子空间投影的 CSMG 波束形成算法，是一种将子空间投影与波束形成技术相
结合的抗干扰方法。该方法首先构造干扰子空间的正交补空间，再将天线阵列接收到的空时信号矢量向其投影，然后对投影后的输出信号采用具有严格约束最小功率的抽样矩阵梯度（CSMG）算法，在固定方向上进行波束形成，最后捕获、定位及解算出每个波束得到的无干扰数据等，可以有效地抑制干扰信号，同时又可以更好的保留期望信号。(The algorithm of the CSMG beamforming based on subspace projection, which is a combination of the Subspace projection and beam forming technology. Firstly, the data vector received by antenna array is projected onto the interference subspace, which is orthogonal to interference subspace for achieving interference suppression. And then, by using the method of the strictly constrained minimum power sampling matrix gradient(CSMG), after the projection of the subspace, the signal is beamformed in a fixed direction. Finally, for jammer-free data of each beam achieved to capture, locate, solute and so on. The ability of the suppress interference by this method, which can be more effectively, and keep the desired signal better.)
- 2019-06-16 20:57:33下载
- 积分：1
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Programación Universitaria
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- 2018-02-01 19:09:39下载
- 积分：1
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16QAM
使用矩形信号16qam通信系统蒙特卡洛仿真 (16qam communication system Monte Carlo simulation)
- 2021-03-11 15:39:26下载
- 积分：1
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PcmTesting
这是一个将语音信号通过PCM编码传输的仿真测试程序，内有详细注释，希望对大家有用。(This is a voice signal transmission through the PCM coded simulation testing procedures, with detailed notes, We hope that the right useful.)
- 2007-03-14 22:17:36下载
- 积分：1
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64QAM
64QAM解调文章，在符号同步方面，采用插
值滤波器的设计，在盲均衡方面，提出了改进算法--MMA+HCMA双模式算法，利用MMA算法对信号的实部和虚部都进行均衡的原理解决了CMA+HCMA算法盲相位的问题(64QAM demodulation article, the symbol synchronization, using the interpolation filter design, blind equalization, the proposed improved algorithm- MMA+ HCMA dual-mode algorithm, the use of MMA algorithm to signal the real and imaginary parts of the balanced CMA+ HCMA principle to solve the problem of algorithm-blind phase)
- 2011-08-06 22:03:21下载
- 积分：1
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Phase--Frequency-Estimation
相位和载波估计的算法，用于通信中的同步估计。(And carrier phase estimation algorithm is used for communication synchronization estimation.)
- 2016-04-25 20:14:28下载
- 积分：1
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doa-tools-master
说明： 所有有关DOA估计的程序和代码，相当于一个完整的工具箱(All programs and codes related to DOA estimation are equivalent to a complete toolbox.)
- 2020-12-04 20:19:23下载
- 积分：1
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ra8875 _ spi 4线硬件
说明： STM32F4 SPI 4线驱动RA8875 彩屏方案(stm32f4 driver ra8875 TFT lcd display)
- 2020-11-13 12:10:48下载
- 积分：1
