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spwminveter
- SPWM technique for Three Phase Inverter. Analysis fundamental improvement with respect to modulation index variation is done in simulation. Analysis can be done also for switching frequency variation for shifting the dominant harmonics
simplex_wireless_calling_system
- 单工无线呼叫系统分发射和接收两大部分。发射部分采用锁相环式频率合成器技术， MC145152和MC12022芯片组成锁相环，将载波频率精确锁定在35MHz，输出载波的稳定度达到4×10-5，准确度达到3×10-5，由变容二极管V149和集成压控振荡器芯片MC1648实现对载波的调频调制；末级功放选用三极管2SC1970，使其工作在丙类放大状态，提高了放大器的效率，输出功率达到设计要求。接收部分以超大规模AM/FM立体声收音集成芯片CXA1238S为主体，灵敏度、镜像抑制、信噪比等各项性能指标均达
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- 多媒体信号的量化索引调制(QIM)数字水-Multimedia signal quantization index modulation (QIM) digital water ~~~~~~~~~
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- 失真补偿量化索引调制水印的性能分析-Quantization index modulation watermarking distortion compensation performance analysis ~~~~~~~~~~
Signal
- 分析了在超宽带通信系统中的扩频干扰，并用两种通用的调制技术实现了对提出的抗干扰方法的仿真-he ultra wideband (UWB) interference to direct sequence spread spectrum (DSSS) receiver is analyzed. Two popular UWB modulation schemes, the time hopping pulse position modulat
fourieranalysisPWMsignal
- 基于MATLAB平台的PWM调制正弦波的快速傅里叶分析-his model simulates and computes Fourier analysis of PWM based sinusoidal waveform. Fundamental frequency can be changed in model properties. Amplitude modulation index and frequency modulation index can be adjusted in Sim
shabisazi-mppt(pao)e
- The relationship of voltage gain to modulation index is analyzed in detail and verified by simulation and experiment
Frequency-Hopped-Multiple-Access-Communications-W
- A noncoherent, bandwidth-efficient modulation scheme is proposed for frequency-hopping multiple-access (FH-MA) networks. The proposed scheme is a combination of noncoherent -ary amplitude-shift keying (NMASK) and orthogonal frequency-division
Z_juzhen
- ：针对传统矩阵变换器存在电压传输比低和输出性能易 受非正常输入影响的两个固有缺陷，提出一种Z–源双级矩 阵变换器(Z-source two-stage matrix converter，ZSTSMC)及 其调制方法。利用Z–源网络的升压特性以提高电压传输比， 通过Z–源网络电容电压闭环对直通因子进行自适应地调 节，从而有效抑制非正常输入对输出性能的影响。闭环控制 中采用一种非线性PID 算法，削弱了Z–源网络表现出的非 最小相位特性带来的不良影响，提高了系统动态性能和
Kite-Codes
- Kite codes, which were originally defined over the binary field, are generalized to arbitrary abelian groups in this paper. Kite codes are a special class of prefix rateless codes over groups, which can generate potentially infinite (or as many