bettprprovide

网格编码的16QAM仿真，验证网格编码的增益和误码(grid coding 16QAM simulation, verification grid coding gain and the error)

盘形凸轮理论轮廓和实际轮廓的绘制，包括滚子(Drawing of theoretical and actual contours of disc cam)

Improvement in Cognitive Radio

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 )

Dymo routing protocol

使用Jakes所假设的模型，用来产生信道抽头延迟线模型中的抽头增益过程所需的多普勒频谱成形滤波器有多种实现方法。时域FIR滤波器是最常用的一种实现方法。(Assumed the use of Jakes model, used to generate the channel-tap-tap delay line model of the process gain the necessary Doppler spectrum shaping filter has a variety of implementations. Time domain FIR filter is an implementation of the most commonly used method.)

mimo_ofdm快速时变的一种低复杂度的检测算法在PDF通道，他涉及MIMO-OFDM的基本知识及应用。(Mimo_ofdm fast time-varying a low complexity detection algorithm in PDF channel, basic knowledge and application he relates to MIMO-OFDM.)

说明：  6. 在三条径的瑞利信道中，对于OFDM： (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。画出比特信噪比与信道估计均方误差的关系曲线和比特信噪比与误码率的关系曲线。 (2) 设频率已同步，请设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 (3) 设时间已同步，请设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线。(6. In the three-path Rayleigh channel, for OFDM: (1) please design a specific navigation-assisted channel estimation method and use Simulink for simulation.The relation curves of bit signal-noise ratio and channel estimation mean square error and the relation curves of bit signal-noise ratio and bit error rate are drawn. (2) if the frequency has been synchronized, please design a specific method of time synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit-snr and acquisition probability. (3) if time has been synchronized, please design a specific method of frequency synchronization using cyclic prefix in OFDM. Simulink is used for simulation to draw the relationship curve between bit signal-to-noise ratio and frequency synchronization error.)

卷积码编译码C程序 一种简单的（3，1，2）卷积码编码和译码程序(Convolutional code encoding and decoding procedures for a simple C (3,1,2) convolutional code encoding and decoding procedures)

Performace analysis of Zero Forcing detection in (2,2) MIMO system using 4 QAM modulation in Rayleigh Flat Fading Channel