cdmamdem

reversing the numbers

说明：  数字信号处理中常用的线性卷积和互相关运算(Digital signal processing used in the linear convolution and cross-correlation computation)

watermarking in matlab

50hz陷波器，零极点的原理。编译通过。 (50hz notch filter, zero-pole principle. Compiled through.)

一种适合入门者的EMD程序，能画出频谱图和IMF的时频图(an easy EMD program )

Differential Evolution (matlab)(Differential Evolution (Matlab))

matlab编写的三位地球仪旋转程序,界面美观，具有，具有gui界面。(matlab prepared three globe rotation program, beautiful interface, with, with a gui interface.)

WIMAX_WZ_withencoding:信道估计，相位噪声补偿，频偏估计，编解码都有 WIMAX_WZ_withoutencoding：在上面的工程基础上，去掉编解码部分 WIMAX_WZ_withoutprocessing：在上面的工程基础上，再去掉相位噪声补偿，频偏估计 WIMAX_WZ_withoutprocessing2：在上面的工程基础上，改用新的前导和导频联合信道估计方案,参考文档《基于802_16d标准的OFDM信道估计技术的研究与实现.kdh》 因为白噪声信道仿真只能体现QPSK调制和RS-CC编码的性能，需要仿真SNR可控的SUI信道，来估计信道均衡的性能。 在多普勒频偏fd>100Hz时，联合信道估计性能才比前导估计强，否则前导估计性能更优。对于600MHz中心频率，要求收发机相对运动速度大于180km/h，这种情况出现的概率不大(WIMAX_WZ_withencoding: channel estimation, phase noise compensation, frequency estimation, the codec has WIMAX_WZ_withoutencoding: the project on the basis of the above, remove the codec section WIMAX_WZ_withoutprocessing: the project on the basis of the above, then remove the phase noise compensation, offset estimation WIMAX_WZ_withoutprocessing2: In the project on the basis of the above, use the new leader and pilot joint channel estimation scheme, the document " Standards-based 802_16d OFDM channel estimation and implementation of technology .kdh" because white noise channel simulation only reflects the QPSK modulation and RS-CC coding performance requires simulation SNR controllable SUI channel, to estimate the performance of channel equalization. When Doppler shift fd> 100Hz, joint channel estimation performance was stronger than the leading estimate, otherwise better estimation performance leader. For 600MHz center frequency transceiver requirements relative velocity )

微波视距信道的仿真，程序给出信道模型的信道冲激响应和信道冲激响应的幅频特性和相频特性。()

说明：  这是一个齿轮设计的软件,设计齿轮的参数全部动算出.(This is a gear design software, design parameters calculated move all the gear.)