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alamouti2x1
- we present a new space–time block code for timeand frequency-selective (doubly-selective) channels. It can be interpreted as the extension of the Alamouti code to doubly-selective channels, and relies on a joint time–frequency reversal of the trans
alamouti2x2
- Many papers have extended STBC design to frequency-selective channels. In [6], STBC has been proposed for single-carrier transmission, which can achieve maximum space-delay diversity in rich scattering channels. The transmission formats proposed
MRC
- ns STBC for purely time-selective channels by transforming the time-selective channels into frequency-selective channels, and by adjusting existing space–time code designs over frequency-selective MIMO channels to collect joint space–Doppler ga
frequence-pression
- 利用RAYleigh法求空间内一点频率与声压关系和声压级与频率关系-RAYleigh method the use of the space that the relationship between frequency and sound pressure and sound pressure level versus frequency
duopulepinlvguji
- 提出了一种基于子空间的目标方向角和多普勒频率联合估计算法，该方法引入改进的粒子群优化思想-Proposed based child Target Angle and Doppler frequency space for joint estimation, the method introduces an improved PSO thought Want
IO-interface
- 1、 （1）熟悉8086小模式下基本系统的电路结构：系统电路、总线形成、端口空间分配等；（2）学会8086的运行环境的配置：内存空间、代码空间、时钟频率等；（3） Proteus下仿真调试工具的使用方法；（5）Proteus提供的实验仪器和测试手段的使用方法。 2、 用通用接口芯片实现无条件I/O传送。用一片74LS245做输出端口控制8个LED灯。要求LED灯从上到下依次点亮一次，每个灯亮1s。画出电路图、按要求编写程序，在仿真环境下调试通过。 -1, (1) be familiar
MIMO-STBC
- 无线通信系统可以利用的资源包括：空间、时间、频率和功率。在B3G/4G系统中，空间资源和频率资源被重新开发使用，从而大大提高了系统的性能。 多天线技术在发送端和接收端同时使用多根天线，扩展了空间域，充分利用了空间扩展所提供的特征，从而带来了系统容量的提高。目前多天线技术已成为了B3G/4G系统的关键技术之一。 -The resources that the wireless communication system can use include: space, time, freque
Control-GUI
- 该界面可以用来分析控制系统在时域，频域和使用状态空间分析技术。它还提供了在采用极点配置的方法设计一个二阶系统的状态空间设计额外的特征。-This GUI can be used to analze control systems in time domain, in frequency domain and using using state space analysis techniques. It also provides an additonal feature of designing
Lossy_FDTD
- 有损介质有的FDTD的matlab编程实现，欢迎选用。- Lossy_FDTD FDTD in a Lossy Medium Lossy_FDTD(T,F) Implements a sinusiodal pulse with frequency F through the problem space for T time steps. For a non-Lossy medium set sigma = 0. For Free space do the ab
spatial domain filter
- All images and pictures contain spatial frequencies. Most of us are familiar with some type of frequency such as the 60-cycle, 110-volt electricity in our homes. The voltage varies in time as a sinusoid, and the sinusoid completes a full cycle 60 tim
spec-analysis
- 功率谱是功率谱密度函数的简称，它定义为单位频带内的信号功率。它表示了信号功率随着频率的变化情况，即信号功率在频域的分布状况。-Spectral analysis or Spectrum analysis is analysis in terms of a spectrum of frequencies or related quantities such as energies, eigenvalues, etc. In specific areas it may refer to:
LMD
- 是由Smith提出的一种新的非线性和非平稳信号分析方法。由于LMD是依据信号本身的信息进行自适应分解的，产生的PF分量具有真实的物理意义，由此得到的时频分布能够清晰准确地反映出信号能量在空间各尺度上的分布规律。-Is the Smith put forward a new kind of nonlinear and non-stationary signal analysis methods. Because the LMD is the information of the signal it
Bartlet_Capon_Music
- Capon Bartlet Music MUSIC estimates the frequency content of a signal or autocorrelation matrix using an eigenspace method. This method assumes that a signal, x(n), consists of p complex exponentials in the presence of Gaussian white noise. Given a
MUSIC
- MUSIC estimates the frequency content of a signal or autocorrelation matrix using an eigenspace method. This method assumes that a signal, x(n), consists of p complex exponentials in the presence of Gaussian white noise. Given an M \times M autocorre
wuxiangtongxin
- 信息通信日新月异,无线技术前景无限。近十年来,无线通信得到了飞速的发展,伴随着移动通信和个人无线通信用户数量的急剧增加,通信流量和数据速率不断提高,对通信系统资源利用率的要求也相应地越来越苛刻。然而经过几十年的充分挖掘,频率、时间和编码技术的潜力几乎已经发挥到了极致,进一步提升的空间已经受到较大的限制,空间资源的开发成为业界瞩目的焦点,智能天线多天线等天线技术应运而生成为各类新颖通信系统的关键技术之一。智能天线是雷达自适应天线技术在无线通信领域的延伸和应用,通过阵列天线电流幅相分布的智能化调节,
PCClockTiming
- Windows user space fast timer utility, using perfCounter frequency and combination of RDTSC and QueryPerformance
huffman
- 基于Huffman编码的文件压缩设计:本次实验将文件中的字符作为结点，每个字符在文件中出现的频率作为结点的权值，采用Huffman算法构造Huffman树，将字符用尽可能短的二进制数位表示（频率越低，二进制数位越长），而不是用8位的ASCII码进行存储，已达到节省存储空间，压缩文件的目的。 程序设计的步骤如下： 1、统计需压缩文件中每个字符出现的频率； 2、将每个字符出现的频率作为叶子结点构建Huffman树，然后将树中结点引向其左孩子的分支标“0”，引向其右孩子的分支标“1”；
Digital-Water-Dct-Algorithm
- 将水印图像二值化后，进行n次Arnold变换置换，使能量均匀分布在水印图像的整个空间。然后，根据载体图像的特征，分解出彩色图像的亮度分量，再将置乱后的水印图像嵌入其低频位置。对检测出的信息进行n次反Arnold置乱后，就可以提取出水印图像-After the watermark image binarization, Arnold transform n times replacement, the energy evenly distributed throughout the space w
music_two
- 述是经典MUSIC算法的基本原理，许多限制是可以放宽或取消的。首先，关于均匀线阵的限制不是必须的，实际中可采用几乎是任意形状的阵列形式，只要满足在个独立信号源的条件下，矩阵具有个线性无关的列就可以了。其次，天线阵元在观测平面内无方向性这一点也不是必要的，而且还可以考虑三维空间的DOA估计问题，即不仅估计信号的方位角，还要估计它的俯仰角，当然MUSIC算法还用于频率、方位和俯仰的联合估计。-Above is the basic principle of the classical MUSIC al
main_STBC_MIMO_OFDM
- 基于MATLAB的mimo系统正交频分多址ofdm，空时编码stbc代码,用于mimo系统仿真-Based on MATLAB mimo system orthogonal frequency-division multiple access ofdm, space-time coding stbc codes for mimo system simulation