Alamouti_8

BER of SIC receiver used in CDMA

实现信号处理中QAM调制、过信道、解调部分。其中QAM调制部分可改符号点数，M阶数，信道加高斯白噪声、时延、多径，调制解调均有星座图。通过本代码，可学习QAM调制解调，或者通信系统的知识。(To achieve QAM modulation, signal processing over channel, a demodulation section. QAM modulation section can be changed symbolic points M order channel additive white Gaussian noise, delay, multipath, the modem has constellation diagram. QAM modulation and demodulation, or communication system knowledge through this code, you can learn.)

可以实现偏振图像的配准，实现多角度的图像处理，有助于偏振方面的多多学习(Can realize polarization image registration, image processing to achieve multi angle, contribute to the polarization of a lot of learning)

开关磁阻电机霍尔控制程序 给予摩托罗拉芯片(Hall switch reluctance motor control program Give MOTOROLA chip)

51单片机产生SPWM波程序，用于逆变电源的制作。(SPWM wave generated 51 single procedure for the production of power inverters.)

zernike多项式生成非球面波前，衍射，即传递函数(Zernike polynomials to generate non-spherical wavefront, diffraction, namely, transfer function)

AM、DSB调制，TDMA、CDMA、FDMA接入方式仿真，以及自己写的画出频谱的函数spectrum2(AM, DSB modulation, TDMA, CDMA, FDMA access method simulation, and my own spectrum way-spectrum2)

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.)

说明：  利用DSPF28335实现单相桥式PWM整流器的双闭环PI控制，用到AD7606和数字锁相(Double-closed-loop PI control of single-phase bridge PWM rectifier using DSPF28335, using AD7606 and digital phase lock)

explains OFDM transmitter AM/PM effect at 64QAM signals