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2
说明： 要：分析和研究了授权用户和认知用户共享频谱的一种算法的性能。
针对阴影效应或信道深衰落时，单用户频谱感知算法无法识别是频带未被
使用还是信道处于深衰落的情况，在频谱感知功率控制算法上进行了改进，
以克服这种算法的不足。改进后的算法能有效地控制认知用户的发射功率，
避免对授权用户产生有害的干扰。仿真结果表明改(To: analysis and research of the authorized users to share spectrum users and a cognitive performance of the algorithm. For the shadow effect or deep fading channel, the single-user spectrum sensing algorithm can not identify a band or a channel has not been used in the case of deep fading, the spectrum sensing power control algorithm has been improved on, to overcome the deficiencies of this method. The improved algorithm can effectively control the cognitive user' s transmit power, to avoid harmful interference with authorized users. Simulation results show that the change)
- 2010-04-14 20:28:19下载
- 积分：1
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MATSLISE_7_0
shrodinger solving with matlab
- 2011-08-22 14:54:50下载
- 积分：1
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PolynomialMatrices
单模多项式矩阵的分解算法，支持符号运算，用matlab实现了smith算法(Polynomial matrix of single-mode decomposition algorithm, to support the symbolic operation, using matlab algorithm achieved smith)
- 2007-11-30 20:58:13下载
- 积分：1
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ofdmpaprbpsk
此程序参照了IEEE 802.11a ，使用了52个子载波。理论期望papr为52.但是由加扰器的存在，所有子载波很难一直的调制(Per the IEEE 802.11a specifications, we 52 have used subcarriers. Given so, the theoretical maximum expected PAPR is 52 (around 17dB). However, thanks to the scrambler, all the subcarriers in an OFDM symbol being equally modulated is unlikely.
)
- 2009-12-12 20:27:48下载
- 积分：1
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time_frequency
说明： 输入波形信号，就可以输出时频分析的结果输入波形信号，就可以输出时频分析的结果(Input waveform signal, you can output the results of time-frequency analysis of the input waveform signal, you can output the results of time-frequency analysis)
- 2009-08-16 21:07:35下载
- 积分：1
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a
说明： this m.file is about wsn
- 2011-05-05 15:12:57下载
- 积分：1
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matlab_uniform_plane
均匀平面波在无损耗媒质中传播时，平面波的电场与磁场的振幅之比等于媒质的本征阻抗，在理想介质中，阻抗为一正实数。因为电场、磁场方向始终不变，根据它们的值，利用MATLAB提供的实现动态轨迹.(Uniform plane wave propagation in the lossless medium, the plane wave of electric and magnetic fields is equal to the ratio of the amplitude of the intrinsic impedance of medium, in an ideal medium, impedance is a positive real number. Because the electric field, magnetic field direction remains unchanged, according to their values, provided by MATLAB dynamic trajectory.)
- 2010-10-01 21:33:59下载
- 积分：1
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Convolutional_code
实现卷积码的BPSK调制、vitbi译码及软硬判决与未编码的BPSK误码率的对比(Convolutional codes to achieve BPSK modulation, vitbi hard and soft decision decoding and BPSK and uncoded BER comparison)
- 2010-10-27 20:59:50下载
- 积分：1
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simpificationandreconstruction
初步学习采样和重建信号。包括源程序和报告书。(Preliminary study of sampling and reconstruction of the signal. Including the source and report.)
- 2009-11-16 15:45:45下载
- 积分：1
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modulation
说明： 通信信号相干调制解调源码 Fc=10 ％载频
Fs=40 ％系统采样频率
Fd=1 ％码速率
N=Fs/Fd
df=10
numSymb=25 ％进行仿真的信息代码个数
M=2 ％进制数(Coherent modulation and demodulation of communication signal source Fc = 10 carrier frequency Fs = 40 systematic sampling frequency Fd = 1 code rate N = Fs/Fd df = 10 numSymb = 25 of the information code to simulate the number of M = 2 hexadecimal number)
- 2008-11-16 20:08:07下载
- 积分：1
