▍1. ldpc
ldpc源代码(matlab编写),也有C语言,涉及LDPC码编码解码程序。(LDPC source code (matlab prepared), there are C language, involves decoding LDPC coding procedures.)
雷达信号分选的经典matlab代码。包含PRI变换、CDIF、SDIF三种方式(radar signal sort include PRI CDIF SDIF)
说明: 雷达信号分选的经典matlab代码。包含PRI变换、CDIF、SDIF三种方式(radar signal sort include PRI CDIF SDIF)
说明: 8. 单径瑞利信道中的四发四收V-BLAST: (1) 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16QAM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。 (2) 计算所设计方案的频谱效率是多少,单位为bit/Hz/s。(8. Four transmit four receive v-blast in single-path Rayleigh channel: (1) please design a specific navigation-assisted channel estimation method and conduct simulation with Simulink to measure the bit error rate performance of 16QAM modulation.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. (2) calculate the spectral efficiency of the designed scheme in bit/Hz/s.)
给出了分数阶傅里叶变换的具体实现程序,阶数可调。该程序实现是根据一篇通信学报上的论文做的。同时提供了OFDM系统在不同信道估计技术下的误码率以及多径信道下的性能。对于想研究基于分数阶傅里叶变换的OFDM系统的人有一定帮助。(The codes for fractional fourier transform (frft) and its inverse way are given according to a published paper in Journal of Communication. The power is adjustable. In addition, two programms of OFDM system simulation under different channel estimate technique and multipath are offered. Therefore, such file packet is of use for those who have interests in studying OFDM based on frft)
DRM 外辐射源雷达的杂波抑制算法代码,LMS RLS ECA 有问题。(The code of clutter suppression algorithm for DRM external emitter radar has some problems with LMS RLS ECA.)
说明: DRM 外辐射源雷达的杂波抑制算法代码,LMS RLS ECA 有问题。(The code of clutter suppression algorithm for DRM external emitter radar has some problems with LMS RLS ECA.)
kd树,matlab源码 kd树,matlab源码(kdtree wiritten in matlab)
kd树,matlab源码 kd树,matlab源码(kdtree wiritten in matlab)
说明: 利用遗传算法优化SVM的两个参数,得到高精度的SVM模型用于识别分类(Optimization of SVM parameters by GA algorithm)
一个协作通信系统的仿真,包括AF,DF协作方式,接收端采用不同的合并方式(最大比合并,选择合并)进行合并.根据接收端不同的接收合并方式进行最优功率分配(A cooperative communication system with AF,DF )
在三条径的瑞利信道中,对于直接序列扩频: (1) 请设计DS-CDMA一种具体的码分导引辅助的信道估计方法,接收机分别采用等均益合并、最大比合并。用Simulink进行仿真,测量BPSK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,请解释在误码率为0.01时,两种合并方式所表现的不同的物理意义。 (2) 设频率已经同步,请设计DS-CDMA一种具体的单停顿滑动相关时间同步方法,用Simulink进行仿真(自己编写代码S-Function方式),分析所设计方案的时间同步精度,画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已经同步,请设计DS-CDMA一种具体的频率方法,用Simulink进行仿真(自己编写代码S-Function方式),画出比特信噪比与频率同步误差的关系曲线。 (err)
三种随机构造法:Gallager_getH、Mackay_getH、PEG_getH(Three random construction methods: Gallager_getH, Mackay_getH, PEG_getH)
说明: 用MATLAB实现同步压缩变换SST,好用(Realize synchronous compression transformation, easy to use)
说明: The reference communication system for Orthogonal Time Frequency Space modulation
说明: 多频移键控,水声通信代码,实现水下通信。。(Multi-frequency shift keying, underwater acoustic communication code, underwater communication)