elemvnt

说明：  MSK FSK的调制程序及其功率谱密度函数图像(MSK FSK modulation process and its power spectral density function of image)

准循环ldpc编码在matlab上的实现(Quasi-cyclic ldpc coding in matlab on the realization of)

在实际的调谐解调电路中，采用的是非相干载波解调，本振信号与发射端的载波信号存在频率偏差和相位抖动，因而解调出来的模拟I、Q基带信号是带有载波误差的信号。这样的模拟基带信号即使采用定时准确的时钟进行取样判决，得到的数字信号也不是原来发射端的调制信号，误差的积累将导致抽样判决后的误码率增大，因此数字QPSK解调电路要对载波误差进行补偿，减少非相干载波解调带来的影响。(In the actual tuning and demodulating circuit, non-coherent carrier demodulation is adopted, and the frequency deviation and phase jitter of the local oscillator signal and the carrier signal of the transmitting end are present, and thus the demodulated analog I and Q baseband signals are signals with carrier error.)

matlab 波束形成的仿真，包含时域，频域，相移波束形成(Matlab beamforming simulation, including time domain, frequency domain, phase-shifted beamforming)

仪器仪表MODBUS RTU 协议,里面对每一帧含义进行了解释标识与举例。(Instrumentation MODBUS RTU protocol, in the face of each frame in meaning explained with an example )

说明：  能够有效在MIMO通信中进行ZF和MMSE预编码(Effective precoding of ZF and MMSE)

说明：  在matlab环境下,仿真基于循环平稳特征检测的频谱感知,(Spectral sensing based on cyclic stationary feature detection)

调用动态链接库的API实现小灵通手机的PSID读取，有工程文件和生成的文件，还在测试用的DLL(Call the API of the dynamic link library to implement the PSID reading PSID of the PHS , with engineering files and generated files, and also in the test DLL)

多路复用写的一个可收发数据的串口应用程序(Write a multiplexer can send and receive serial data applications)

对语音编码技术的特点进行了分析与研究, 对波形编码,声码器和混合编码三种主要 的语音编码进行了比较, 并介绍了GSM 和CD(This paper analyzes and studies the characteristics of speech coding technology, compares the three main speech codes: waveform coding, vocoder and hybrid coding, and introduces GSM and CD.)