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kuopin
直接序列扩频系统(DS,Direct Sequence)又称为直接序列调制系统或伪噪声系统(PN 系统),简称为直扩系统,是目前应用较为广泛的一种扩展频谱系统。要传送的信息经伪随机序列编码后对载波进行调制。在发信端越冬用扩频序列去扩展信号的频谱,在收信端,用相同的扩频友序列进行解扩,将展宽的频谱扩展信号还原成原始信号。因为伪随机序列的速率远大于要传送信息的速率,所以受调信号的频谱宽度将远大于要传送信息的频谱宽度,帮称之为扩频(Direct sequence spread spectrum (DS, Direct Sequence) modulation system, also known as direct sequence or pseudo-noise system (PN system), referred to as direct expansion systems, is currently the more widely used as a spread spectrum system. To send the information encoded by the pseudo-random sequence of carrier modulation. End of winter in the letter to extend the signal with the spreading sequence of spectrum, in the end prepared to receive and use the same sequence spread spectrum despreading friends, broadening the spectrum to restore the original signal expansion signals. Because the rate of pseudo-random sequence is much larger than the rate of information to be sent, so the frequency spectrum by adjusting the width of the spectrum is much larger than the width of the information to be sent to help is called spread spectrum)
- 2011-01-09 16:54:26下载
- 积分:1
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BPnetwork-genetic-optimization
采用matlab软件进行实现的遗传算法优化的BP神经网络。(Using genetic algorithm to optimize BP neural network to realize matlab software.)
- 2015-01-08 16:36:33下载
- 积分:1
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shaping
su随机函数的生成,可用于数学和通信等过个领域,采用一般的生成方法(su random function generator that can be used such as math and communication areas, using the general method of generating)
- 2013-04-24 20:45:48下载
- 积分:1
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pinpufenpei
基于博弈论的无线电频谱分配MATLAB程序,运用了纳什均衡(Based on the game theory of radio spectrum allocation MATLAB program, the use of Nash equilibrium)
- 2017-04-05 16:38:47下载
- 积分:1
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chap7
说明: 程序代码说明
P0701:细胞边缘检测
P0702:癌细胞形态学分析
P0703:癌细胞颜色分析(Procedure Code Description P0701: Edge Detection P0702: cell morphology analysis P0703: Colors of cancer)
- 2010-04-11 22:15:51下载
- 积分:1
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Alv13lianghua
用matlab编A律13折线非均匀量化信噪比.m( non-uniform quantization noise ratio )
- 2011-04-23 15:54:58下载
- 积分:1
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Comb_type_OFDM
该程序给出了使用梳状导频信号的OFDM系统的仿真研究,使用了LS信道估计,最后画出了误码率图(The program gives the simulation of a comb pilot signal OFDM system using the LS channel estimation, and finally draw a diagram BER)
- 2020-11-29 12:19:29下载
- 积分:1
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sjfx
关于matlab的方面的一些源代码。可以实现多项式函数计算,插值计算,和傅里叶变换,等等(Some aspects on the matlab source code. Polynomial function can calculate, interpolation, and Fourier transform, and so on)
- 2010-12-14 20:47:54下载
- 积分:1
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ccr
使用matlab编译的基于颜色直方图特征的彩色图像检索技术的研究(Compiled using matlab image retrieval system)
- 2011-05-10 16:11:27下载
- 积分:1
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zuixiaoshengchengshu_MATLAB
最小生成树算法的matlab实现,自己写的(good for learning)
- 2013-11-29 12:16:22下载
- 积分:1