信号检测

OPC技术在自动化监控系统的应用,实现语言是VB(OPC technology in the automated monitoring system to realize the language is VB)

4FSK调制解调的matlab代码。采用相干解调的方式4FSK进行解调，与大多数方案的包络检波不同。基带信号用四种电平来表示，与调制信号相区分。(Demodulation matlab code 4FSK modulation. Coherent demodulation 4FSK demodulates Unlike most programs envelope detector,. The baseband signal is represented with four level distinguish phase with the modulation signal.)

LDPC codes 4girth check

说明：  viterbi卷积码编码,译码,调试通过,可以直接使用(Viterbi convolutional code coding, decoding, debugging pass, can be used directly)

Meta 1 MMU handling code.

1）设计Butterworth型音频抗混叠滤波器； 2）参数： 下通带频率300Hz；上通带频率3400Hz； 下阻带频率280Hz；上阻带频率3600Hz； 通带最大衰减0.3dB； 阻带最小衰减40dB； 3）采用一低通滤波器和一高通滤波器级联； 4）分别确定LPF和HPF的性能指标； 5）求出两滤波器的系统函数和频率响应，并画出其幅频特性曲线； 6）求整个滤波器的系统函数和频率响应，并画出其幅频特性曲线。(1) the design of Butterworth-type audio anti-aliasing filter 2) parameters: passband frequency of 300Hz on pass-band frequency 3400Hz under the stop-band frequency of 280Hz on stop-band frequency 3600Hz passband maximum attenuation of 0.3dB minimum stopband attenuation of 40dB 3) the use of a low-pass filter and a high-pass filter cascade 4) separately to determine the performance of LPF and HPF target 5) to derive two-filter system function and frequency response, and draw its increase frequency characteristic curve 6) for the entire filter system function and frequency response, and draw its amplitude-frequency characteristic curve.)

说明：  多用户检测的完整matlab程序，特别有用的东西，希望对你们有所帮助！(Complete multi-user detection matlab program, especially useful things you want to help!)

说明：  基于SimuLink的数字通信链路仿真 包含QPSK及16QAM模式下的链路计算(Simulation of digital communication link based on Simulink Including link calculation in QPSK and 16QAM mode)

OFDM系统的LS和DFT信道估计的算法分析比较(LS and DFT OFDM system channel estimation algorithm analysis and comparison)

Effi cient Cooperative Diversity Schemes and Radio Resource Allocation for IEEE 802.16j