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BPSK_havedone
bpsk编码很适合出学者,已经经过调试
加了个 升余弦滤波(BPSK encoding is very suitable for the academics, have been debug plus a raised cosine filter)
- 2008-05-08 00:30:00下载
- 积分：1
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writeseeds
a function that write seeds for rand and randi based on current time
- 2013-01-23 22:14:58下载
- 积分：1
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MCGKrigid
转子系统固有频率分析，两端简支约束下的转子系统固有特性分析中质量矩阵编程(Analysis of Natural Frequency of Rotor System, Mass Matrix Programming in Analysis of Inherent Characteristics of Rotor System with Simply Supported Constraint at Both Ends)
- 2018-05-12 09:13:59下载
- 积分：1
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chengxu
为了提高通信系统的信息传输速率，人们提出了UWB通信系统，即Ultra-Wideband 通信系统。在UWB系统中，信号的带宽一般都在GHz的量级，这么宽的带宽造成了UWB系统和现有的通信系统频谱的重叠。为了降低对现有通信系统的影响，UWB信号的设计需要满足一定的频谱模板。如果一个信号的频谱基本满足频谱模板的规定（即在绝大部分频段内功率小于规定区间的上限），我们可以认定其为一个UWB信号。(In order to improve communication systems, information transmission rate of UWB communications systems have been proposed, namely, Ultra-Wideband communication systems. In the UWB system, the signal bandwidth will generally be in the order of GHz, caused such a wide bandwidth of UWB system and the existing communications system spectrum overlap. In order to reduce the impact of the existing communication systems, UWB signal design needs to meet certain spectral mask. If a signal spectrum can basically meet the spectral mask (that is, in most of the provisions of band power is less than the maximum range), we can assume it as a UWB signal.)
- 2009-11-29 09:54:29下载
- 积分：1
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Filtro-3-vias
This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery loop followed by a DD phase recovery loop. The transmitter?s symbol period is T and set to a value of 100 ms. The symbol period at the receiver is Tr. The model will produce six windows: Two constellation plots and two eye diagrams (for the real part only), at the output of the matched fi lters and after the recovery loops a plot of the phase error (output of the NCO) and a plot of the fractional timing error (used in the interpolator). The frequency off set at the receiver is denoted by deltaf. The model simulates the transmission of 8000 QPSK symbols.
- 2015-02-03 08:10:37下载
- 积分：1
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k
说明： 模式识别中的K均值聚类分析方法，该方法力偶那个迭代过程来进行处理，一步步逼近结果(Pattern Recognition Analysis of K-means clustering method Couple iterative process to deal with that, step by step approach results)
- 2010-09-05 14:39:48下载
- 积分：1
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rimm3
联合格自适应交互多模型算法。根据目标情况调整格间距。(United grid adaptive interacting multiple model algorithm.)
- 2011-05-12 16:20:58下载
- 积分：1
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transimiss
moore响度模型外耳中二差值传递函数和滤波器，完成版，共同没努力(moore ludness caculation)
- 2020-07-02 03:00:01下载
- 积分：1
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motionComp
this calculates motion compensated image
- 2011-09-21 22:15:53下载
- 积分：1
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Wind-speed-prediction
基于最小二乘支持向量机理论,结合某风电场实测风速数据,建立了最小二乘支持向量机风速预测模型。对该风电场的风速进行了提前1h的预测,其预测的平均绝对百分比误差仅为8.55 ,预测效果比较理想。同时将文中的风速预测模型与神经网络理论、支持向量机(support vector machine,SVM)理论建立的风速预测模型进行了比较。仿真结果表明,文中所提模型在预测精度和运算速度上皆优于其他模型。
(Based on least squares support vector machine theory, combined with a wind farm measured wind speed data, the establishment of a wind vector machine forecasting model of least squares support. The velocity of the wind farm were predicted in advance 1h, the mean absolute percentage error of only 8.55 of its forecast, forecast effect is ideal. While the text of the wind speed forecasting models and neural networks, support vector machines (support vector machine, SVM) wind speed prediction models were compared with established theories. Simulation results show that our proposed model on prediction accuracy and computing speed are superior to other models.)
- 2014-05-24 17:32:46下载
- 积分：1
