channel

simulation for walsh code (CDMA)

井下通信时的链路预算，包括误码率和信道容量的仿真。(Underground communication link budget, including the BER and channel capacity in the simulation.)

Robert,sobel图像轮廓提取代码，不是matlab自带函数！(Robert, sobel image contour extraction code, not matlab own function!)

call matlab function from C++.zip

matlab信号与系统源码(Matlab Signal and System FOSS)

说明：  matlab中电气化铁路牵引网上的AT所模型。(matlab electrified railway traction in the model AT Internet.)

对数据进行EMD分析时，如果数据不是纯的白噪声,则分析过程中一些尺度将会丢失,出现模态混叠现象。EEMD通过附加均匀分布 在整个时频空间的白噪声，可有效抑制这种现象的发生。(EEMD is insufficient for the EMD method, we propose a noise-assisted data analysis methods. EEMD decomposition principle is: when the additional white noise uniformly distributed throughout the time-frequency space, the time-frequency space is carved up by the filter component of the composition at different scales.-)

Implement primitive realloc(3) functionality.

求图像的熵，共大家分享学习交流，大家漫漫看(the work )

在OFDM系统 中，宽带信道被分割相互重叠的窄带子信道，如果各子信道 的带宽比信道的相干带宽要小，那么信号传输就有可能在无 频率选择性衰落或者平坦衰落的信道进行。(In OFDM system The wideband channel is divided into narrowband sub-overlapping, if each sub- The bandwidth is less than the coherence bandwidth of the channel, the signal transmission is possible without Frequency selective fading or flat fading channels.)