an

6678DSP的I2C程序，实现E2prom的读写操作(6678DSP of I2C procedures, read and write operations E2prom)

数字变频器的设计，实验中用到的所有完整的工程文件: （1）数字上变频的设计，完整的工程文件包含： rrc_cic_impulse.mdl rrc_cic_data.mdl qpsk_modulate.mdl （2）数字下变频的设计，完整的工程文件包含： received_if.mdl demod.mdl halfband.mdl(Digital conversion: 1.DUC:rrc_cic_impulse.mdl rrc_cic_data.mdl qpsk_modulate.mdl 2.DDC:received_if.mdl demod.mdl halfband.mdl)

RFID防碰撞技术 ALOHA算法的matlab仿真(RFID anti-collision ALOHA algorithm)

已知一低通滤波器的采样率为2KHz，通带为500Hz，阻带为600 Hz，带内波动3dB，带外衰减-50dB，滤波器的相位具有线性特性，具体幅频特性见下图。要求用等波纹方法设计出该FIR滤波器，然后用TMS320C54x汇编语言编程，并在CCS下调试实现该FIR滤波器。(A low-pass filter known to the sampling rate of 2KHz, passband to 500Hz, stopband to 600 Hz, with fluctuations within 3dB,-band attenuation of-50dB, with a linear phase filter characteristics, amplitude-frequency characteristic specific see Fig. Request method, such as corrugated design of the FIR filter, and then use the TMS320C54x assembly language programming and debugging in CCS to achieve the FIR filter.)

无线局域网情况下OFDM的信道分配仿真代码 很好的源码 不错的(Wireless local area network (LAN) case OFDM channel allocation simulation code is a good source of good)

阵元数16下均匀圆阵的零限形成，先建立约束函数，再创建目标函数，计算零陷(Element number 16 under the Uniform Circular Array of zero-threshold shape, to create constraint function, and then create the objective function, calculated Null)

说明：  当今世界电子对抗日益激烈，对于雷达低截获和抗干扰能力的研究越来越受到关注。OFDM (Orthorgonal Frequency Division Multiplexing，正交频分复用)雷达具有大时宽带宽积、波形设计方法灵活、频谱利用率较高以及低截获性能好的特性，因此逐渐成为雷达领域的重点研究方向。除此之外，OFDM信号时域和频域波形都比较复杂，当雷达信号采用OFDM技术时，敌方很难精确估计发射信号波形和瞬时频率，使得截获机不容易分析出检测到的雷达信号。当面对敌方的欺骗式干扰时，对于同样具有大时宽带宽积的线性调频信号，OFDM信号具有更好的抗欺骗式干扰的性能，因此OFDM技术在雷达上的运用愈来愈得到关注。(As electronic warfare becomes increasingly fierce, low intercept probability radar has become an important research filed in electronic countermeasures. OFDM (Orthorgonal Frequency Division Multiplexing) radars have gradually emerged due to their high spectrum efficiency, large time-bandwidth product, flexible waveform design methods, and low intercept probability.In addition, because of the complex time-frequency characteristics of the transmitted signal in OFDM radar, the enemy is difficult to estimate the transmitted signal waveform and instantaneous frequency.When faced with enemy deception interference, OFDM signals have better anti-spoofing performance for LFM signals that also have a large time-bandwidth bandwidth product. Therefore, the use of OFDM technology in radar is attracting more and more attention. .)

读取ecg心电信号和低通滤波器预处理，频谱分析(Read ECG signal and low-pass preprocessing)

说明：  运用到DSP的F28335芯片的PWM功能，定时器0中断执行操作，每一秒变换一次占空比(Using the PWM function of F28335 chip of DSP, timer 0 interrupts the operation.Change duty cycle once per second)

gps软件接收机c/a码的捕获，可用于ca码的直接捕获(gps software receiver c/a code capture, ca code can be used to directly capture)