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philosopherhavedinner
该程序是描述线程的,能够帮助初学者更好的理解线程的实现过程。(this program is about thread in Java.)
- 2010-01-08 11:08:35下载
- 积分：1
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transformer
simple ac transformer circuit
- 2012-07-14 08:45:24下载
- 积分：1
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1
说明： 认知无线电技术的提出是为提高频谱利用率，而认知无线实现的关键技术是频谱感知，众所周知协作检测提高了衰落环境中认知用户系统检测的性能，该文章是基于协作检测提出新的检测方案，利用了双门限方法提高了系统性能，兼顾带宽有限和增强性能两个方面，是基于门限检测的协作检测性能优化的前提。对以后门限优化协作检测非常有用。(In this paper, we employ a double threshold method in energy detector to perform spectrum sensing, while a fusion center in the cognitive radio network collects the local decisions and observational values of the secondary users, and then makes the final decision to determine whether the primary user is absence or not. Simulation results will show that the spectrum sensing performance channels is improved significantly under the proposed scheme as opposed to the conventional method.)
- 2010-04-14 21:02:35下载
- 积分：1
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16QAM
16QAM调制与解调，可以实现不同信道噪声下的误码率计算，并画出频谱和星座图(16QAM modulation and demodulation error rate calculated under different channel noise and draw the spectrum and constellation)
- 2012-12-30 21:36:26下载
- 积分：1
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8-optimal_in_FRFTdomains
time-invariant degradation models and stationary
signals and noise, the classical Fourier domain Wiener
filter, which can be implemented in O(N logN) time, gives the
minimum mean-square-error estimate of the original undistorted
signal. For time-varying degradations and nonstationary processes,
however, the optimal linear estimate requires O(N2) time
for implementation. We consider filtering in fractional Fourier
domains, which enables significant reduction of the error compared
with ordinary Fourier domain filtering for certain types
of degradation and noise (especially of chirped nature), while
requiring only O(N logN) implementation time. Thus, improved
performance is achieved at no additional cost. Expressions for
the optimal filter functions in fractional domains are derived,
and several illustrative examples are given in which significant
reduction of the error (by a factor of 50) is obtained.
- 2015-02-21 10:15:13下载
- 积分：1
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matlabshiyucaiyang
MATLAB实现连续信号采样、频谱分析和采样信号恢复的方法。计算在临界采样、过采样、欠采样三种不同条件下恢复信号的误差，并由此总结采样频率对信号恢复产生误差的影响，从而验证时域采样定理。(MATLAB continuous signal sampling, spectral analysis and sampling signal recovery method. Calculated in a critical sampling, the oversampling signal error recovery due to the sampling of the three different conditions, and thereby generate error summarizes the sampling frequency for signal recovery, in order to verify the time domain sampling theorem.)
- 2013-05-17 22:24:41下载
- 积分：1
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vision-3.3
计算机视觉中大量的函数matlab源码实现(Computer vision function matlab source code to achieve)
- 2013-05-19 12:15:04下载
- 积分：1
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Integer-Programming
求解整数规划的一个很好的工具，文件是一个调用函数，读者可以根据自己的需求编写程序并调用(The program is used for integer programming,and it can efficiently solved those question, you can write the orders to call the program)
- 2011-08-22 10:45:43下载
- 积分：1
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distribution
two case distribution-system mfile
- 2013-09-20 12:02:58下载
- 积分：1
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ZSI_SBC_Open_Loop_Perfect
this file is a simulation of simple boost control in z_zource inverter
- 2013-12-10 01:56:30下载
- 积分：1
