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pract3
practica 3 sistemas lianelas
- 2010-11-14 02:21:27下载
- 积分：1
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node-of-optimizatin-algorithm-for-cr
协作频谱感知虽然可提高系统的感知性能， 但随着感知节点数目的增加， 系统资源的占用越来越多，
系统传输效率下降． 分析了协作频谱感知方法的感知性能， 得到协作频谱感知的感知性能与感知节点数目和接
收信噪比之间的关系， 提出了一种新的次级用户节点的选择方法， 该方法有效保证了所选择节点的感知性能，
仿真验证了该算法的有效性和可靠性．(Although the cooperative spectrum sensing can improve the perceived performance of the system, but with the perception of the number of nodes increases, more and more system resources, the system transmission efficiency decreased. Cooperative spectrum sensing method of analysis of the perceived performance of collaborative spectrum sensing by the perception of performance and perception of the number of nodes and the relationship between the received SNR, a new secondary user node selection method, which effectively guarantee perceived performance of the selected node, the simulation proves the validity and reliability.)
- 2011-06-07 15:40:02下载
- 积分：1
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Rayleigh-approximation
该程序主要用于计算瑞利散射条件下，雷达接收到的粒子散射场的大小。(The codes are used to generate the field and then calculate the far-field scattered field collected by the radar.)
- 2012-06-09 00:00:25下载
- 积分：1
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Demo_Vid_Watermarking
DM6437 using simulink
- 2013-11-27 01:02:42下载
- 积分：1
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BER-for-BPSK-in-AWGN
BER for BPSK in AWGN with receive diversity
- 2013-09-01 17:13:04下载
- 积分：1
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Laplace
传统的短时谱估计语音增强算法通常假设语音谱分量相互独立，没有考虑语音谱分量间的相关性。针对这
一问题，该文提出一种新的基于多元Laplace分布模型的短时谱估计算法。首先，假设语音的离散余弦变换(DCT)
系数服从多元Laplace分布，以此利用谱分量间的相关性；在此基础上，利用多元随机矢量的高斯尺度混合模型表
示，推导得到语音DCT系数矢量的最小均方误差(MMSE)估计的解析表达式；并进一步推导了基于该分布模型的
语音存在概率，对最小均方误差估计子进行修正。实验结果表明，该算法在抑制背景噪声和减少语音失真等方面优
于传统的语音增强方法。(The spectral components of speech are usually assumed to be independent in traditional short-time
spectrum estimation, which is not the case in practice. Tosolve this problem, a new speech enhancement algorithm
with multivariate Laplace speech model is proposed in this paper. Firstly, the speech Discrete Cosine Transform
(DCT) coefficients are modeled by a multivariate Laplace distribution, so the correlations between speech spectral
components can be exploited. And then a Minimum-Mean-Square-Error (MMSE) estimator based on the proposed
model is derived using a Gaussian scale mixture representation of random vectors. Furthermore, the speech
presence uncertainty with the new model is derived to modify the MMSE estimator. Experimental results show
that the developed method has better noise suppression performance and lower speech distortion compared to the
traditional speech enhancement method. )
- 2014-01-18 10:44:40下载
- 积分：1
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yanggongjidong
％％目标在监控区内运动轨迹为佯攻机动曲线时的定位( Target in the surveillance zone trajectory curve for the feint at the time of mobile positioning)
- 2007-11-14 08:36:56下载
- 积分：1
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Amplitude_shift_keying
This is the program for amplitude shift keying
u hav to put the pulse only.
- 2010-10-25 13:40:19下载
- 积分：1
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GPC
一个广义预测控制GPC的例子，matlab源程序(Example of a generalized predictive control (GPC), matlab source)
- 2013-01-09 10:50:28下载
- 积分：1
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2110771_RKDG-Euler
说明： Galerkin method,a numerical approximate method based on,commonly used in ordinary differential equation.
- 2019-12-25 20:17:31下载
- 积分：1
