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simulinksimulationqbsk
从simulink仿真可以看到瑞利衰落信道对于bpsk性能的影响。(Simulink simulation can be seen from the Rayleigh fading channel performance for bpsk.)
- 2009-04-17 08:56:41下载
- 积分：1
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适应度函数的算法
排课问题是一个有约束的、多目标的组合优化问题，并且已经被证明是一个NP完全问题。
遗传算法借鉴生物界自然选择和自然遗传机制，使用群体搜索技术，尤其是用于处理传统搜索方法难以解决的复杂的和非线性的问题。经过近40年的发展，遗传算法在理论研究和实际应用中取得了巨大的成功，本文将遗传算法用于排课问题的求解，首先讨论了排课问题中的影响因素、主要约束条件、求解目标和难点，并用数学模型完整地描述了排课问题。其次对多个模糊排课目标进行了定量分析，建立了排课优化目标空间。针对排课问题研究了染色体编码方式以及遗传算子的设计，提出了适应度函数的计算方法。最后对排课问题进行了实验。实验结果表明，其过程的目标值跟踪显示，算法稳健趋优，所得结果令人满意。(Course Scheduling problem is a constrained, multi-objective optimization problem, and has proven to be a NP complete problem.
Genetic algorithms reference biosphere and the natural genetic mechanism of natural selection, using the group search technology, particularly the traditional search methods for handling complex and difficult to solve nonlinear problems. After nearly 40 years of development, the genetic algorithm in the theoretical study and practical application was a great success, this paper genetic algorithm for solving the course timetabling problem, first discussed the impact of factors in the course arrangement, the main constraints, to solve goals and difficulties, and a complete mathematical model to describe the course arrangement. Arranging multiple fuzzy goals followed by a quantitative analysis, the optimal target Arranging space. Arranging for the Study of the chromosome coding and genetic operators design, proposed fitness function is calculated. Finally, the co)
- 2010-05-13 11:49:12下载
- 积分：1
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Modeling-Rayleigh-fading-channel-based-on-modifie
This Matlab Code models a Rayleigh fading channel using a modified Jakes channel model.
A modified Jakes model chooses slightly different spacings for the scatterers and scales their waveforms using Walsh–Hadamard sequences to ensure zero cross-correlation.
alpha_n = frac{pi(n-0.5)}{2M} and eta_n = frac{pi n}{M},
results in the following model, usually termed the Dent model or the modified Jakes model:
R(t,k) = sqrt{frac{2}{M}} sum_{n=1}^{M} A_k(n)left( cos{eta_n} + jsin{eta_n}
ight)cos{left(2pi f_d t cos{alpha_n} + heta_{n}
ight)}.
The weighting functions A_k(n) are the kth Walsh–Hadamard sequence in n. Since these have zero cross-correlation by design, this model results in uncorrelated waveforms. The phases ,! heta_{n} are initialized randomly and have no effect on the correlation properties. Matlab fast Walsh-Hadamard transform function is used to efficiently generate samples using this model.
- 2015-03-10 15:15:01下载
- 积分：1
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Calendar
工厂日历，类似于google的 calendar功能比较强大(the shop calendar)
- 2015-03-31 09:33:13下载
- 积分：1
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Pav
in this package are the programs needed to solve any eigenvalue problem.
- 2013-08-16 02:13:02下载
- 积分：1
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ff
Running a function on several files in Matlab
- 2013-10-22 18:22:05下载
- 积分：1
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snkae-model
基于matlabGUI 的图形化界面，展示了snake能量边缘算法检测，并通过调节参数查看算法效果(MatlabGUI-based graphical interface that shows the snake energy edge detection algorithm, and the algorithm by adjusting the parameters to see the effect of)
- 2013-12-09 14:26:55下载
- 积分：1
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grain-growth
一个用于模拟多晶粒长大的元胞自动机的源程序(A cellular automata is used to simulate the grain growth more source program)
- 2013-11-12 10:15:41下载
- 积分：1
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Untitled
ls ber performance OF OFDM CHANNEL WHICH shows why ls in ofdm is better than other.
- 2013-12-17 21:25:15下载
- 积分：1
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kemwn
卡尔曼和维纳滤波器的设计及使用 附带源代码(Kalman and Wiener filter design and the use of collateral source code)
- 2009-04-18 11:40:03下载
- 积分：1
