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L1General2
Solving graph optimization problems. Fast and support sparse constraint
- 2009-10-24 09:38:34下载
- 积分：1
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Exp6-Infocom06
社交网络中，infocom2016会议上的用户相遇数据(social contact data in Infocom2016 for social network analys)
- 2020-10-09 10:27:35下载
- 积分：1
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LDPC-matlab-simulink
详细介绍了ldpc编码以及如何在matlab的simulink 上实现(ldpc matlab simulink)
- 2013-04-12 10:50:59下载
- 积分：1
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serial to parallel
直接序列扩频通信中采用QPSK调制时，须将产生的串行数据首先串并变换成两路，本程序就是实现这种串并变换！(Direct sequence spread spectrum communications using QPSK modulation, it is necessary to have a string of serial data and converted into the first two, the process is to realize such a string, and transform!)
- 2009-07-01 11:48:14下载
- 积分：1
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基于otsu算法的图像分割方法
说明： oust图像分割，最大类间方差，多阈值图像分割(Oust image segmentation, maximum inter-class variance, multi-threshold image segmentation)
- 2019-12-25 16:38:49下载
- 积分：1
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BPSKMRC
最大比合并（MRC）的分集合并程序；调制方式BPSK;瑞利信道(The diversity merging program of the maximum ratio combination (MRC); modulation mode BPSK; Rayleigh channel)
- 2020-11-13 17:29:42下载
- 积分：1
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BPSK调制仿真
说明： bpsk调制仿真，可直接用
1、数字调制方法
数字调制就是把数字基带信号的频谱搬移到高频处，形成适合在信道中传输的带通信号。基本的数字调制方式有振幅键控（ASK）、频移键控（FSK）、绝对相移键控（PSK）、相对（差分）相移键控（DPSK）。在接收端可以采用想干解调或非相干解调还原数字基带信号。
数字信号的传输方式分为基带传输和带通传输。然而，实际中的大多数信道（如）无线信道具有丰富的低频分量。为了使数字信号在带通信道中传输，必须用数字基带信号对载波进行调制，以使信号与信道的特性相匹配。(1, digital modulation method
Digital modulation is the transfer of the spectrum of a digital baseband signal to a high frequency to form a bandpass signal suitable for transmission in the channel. The basic digital modulation methods are amplitude keying (ASK), frequency shift keying (FSK), absolute phase shift keying (PSK), and relative (differential) phase shift keying (DPSK). At the receiving end, the digital baseband signal can be restored by using dry demodulation or non-coherent demodulation.
Digital signal transmission methods are divided into baseband transmission and bandpass transmission. However, most channels in practice, such as wireless channels, have rich low frequency components. In order for a digital signal to be transmitted in a band channel, the carrier must be modulated with a digital baseband signal to match the signal to the characteristics of the channel.)
- 2019-05-28 10:46:01下载
- 积分：1
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matlab
Corenell大学的整套软件GPS接收机matlab代码 可实现从信号捕获、跟踪、相关处理、测量值计算、导航电文解调、PVT解算等功能 (Corenell university package of software GPS receiver matlab code can be realized from the signal acquisition, tracking, correlation processing, measuring value, navigation data demodulation, PVT solver functions)
- 2021-04-26 17:18:45下载
- 积分：1
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7
说明： 7. 单径瑞利信道中的两发一收STBC：
(1) 分析误码率的理论性能，画出比特信噪比与误码率的关系曲线。
(2) 请设计一种具体的导引辅助的信道估计方法，用Simulink进行仿真，测量BPSK调制时的误码率性能。画出比特信噪比与信道估计均方误差的关系曲线，画出比特信噪比与误码率的关系曲线。(7. Two outgoing and one outgoing STBC in single-path Rayleigh channel:
(1) analyze the theoretical performance of bit error rate and draw the curve of the relationship between bit SNR and bit error rate.
(2) please design a specific navigation-assisted channel estimation method, Simulink simulation, measurement of BPSK modulation error rate performance.The relation curve between the bit signal-noise ratio and the mean square error of channel estimation is drawn, and the relation curve between the bit signal-noise ratio and the bit error rate is drawn.)
- 2021-01-23 11:58:45下载
- 积分：1
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三维重建
利用matlab进行三维重建，比较复杂，使用程序可以简单的进行三维重建(Three-dimensional reconstruction using matlab is more complicated, and the program can be used for simple 3D reconstruction.)
- 2019-01-27 11:02:43下载
- 积分：1
