高斯噪声

说明：  有助于学习LS信道估计的编码,以及mmse和LMMSE(ls chanel MMSE CHANEL LMMSE CHANEL)

（九宫问题）在一个３×３的九宫中有１－８这８个数及一个空格随机的摆放在其中的格子里，如图１－１所示。现在要求实现这个问题：将该九宫格调整为如图１－１右图所示的形式。调整的规则是：每次只能将与空格（上、下、或左、右）相邻的一个数字平移到空格中。试编程实现这一问题的求解。((Nine-palace issues) in a 3 × 3 of the Nine-palace are 1-8 this 8 random number and the placing of a space in which the cell house, as shown in Figure 1-1. Now required to achieve this issue: the squares adjustment for the right as shown in Figure 1-1 form. Adjustment of the rules: each can only be with the spaces (upper and lower, or left, right) adjacent to a digital flat space. Test Programming to solve this problem.)

CALL DROP KPIS AND RELATIVE COUNTERS

电力线信道模型下OFDM通信系统的Simulink仿真研究，值得大家参考(Power line channel model Simulink Simulation of the OFDM communication system, it is worth reference)

ldpc源代码（matlab编写）,也有C语言，涉及LDPC码编码解码程序。(LDPC source code (matlab prepared), there are C language, involves decoding LDPC coding procedures.)

有关多普勒频移与距离的关系的matlab仿真(doppler shift)

计算矩形栅格或三角栅格阵列天线栅瓣图，优化天线单元间距设计(caculate grating lobes of rectangular grid or triangular grid array)

有关4QAM，16QAM，64QAM，DQPSK的调制解调的(The 4QAM, 16QAM, 64QAM, DQPSK modulation and Demodulation)

说明：  this is official usb2.0 protocol

给出了BPSKMSKQAMGMSK的详细代码，可以直接在MATLAB中运行，并且有误码率的仿真。(BPSKMSKQAMGMSK given a detailed code, can be run directly in MATLAB, and BER simulation.)