4-ary-LDPC

Carrier-phase synchronization can be approached in a general manner by estimating the multiplicative distortion (MD) to which a baseband received signal in an RF or coherent optical transmission system is subjected. This paper presents a unified modeling and estimation of the MD in finite-alphabet digital communication systems. A simple form of MD is the camer phase exp GO) which has to be estimated and compensated for in a coherent receiver. A more general case with fading must, however, allow for amplitude as well as phase variations of the MD. We assume a state-variable model for the MD and generally obtain a nonlinear estimation problem with additional randomly-varying system parameters such as received signal power, frequency offset, and Doppler spread. An extended Kalman filter is then applied as a near-optimal solution to the adaptive MD and channel parameter estimation problem. Examples are given to show the use and some advantages of this scheme.

这是一篇关于特征语音补偿方法的论文，想了解这方面知识的可以看看(This is a paper about the characteristics of speech compensation method, want to know about this aspect of knowledge can have a look)

汽车驱动力分析、行驶阻力分析和功率平衡图的绘制，根据汽车的12345档进行编程分析(Car driving force analysis, driving resistance analysis and graph drawing power balance, 12345 file programming analyzed according to the car)

说明：  matlab xfem 插件，可用于计算多裂纹交叉融并结果(Matlab XFEM plug-in can be used to calculate the results of multi crack cross fusion)

说明：  相关积分计算matlab程序 (Procedures related to calculation matlab)

说明：  是自适应滤波的一个源代码，用matlab编写，可以直接复制进行运行(Adaptive filtering is a source code, matlab written copy can be run)

说明：  基于Reed_Solomon算法的DataMatrix条码纠错码的研究基于Reed_Solomon算法的DataMatrix条码纠错码的研究(DataMatrix bar code based on Reed_Solomon algorithm of error-correcting codes DataMatrix bar code based Reed_Solomon algorithm of error-correcting codes)

基于批量最小二乘、迭代最小二乘辨识Volterra Series程序(Based on Least Square, iterative least square identification Volterra Series program)

为了解决考虑生产总成本的车间调度问题，对引入加工成本、库存管理成本和拖期惩罚成 本的车间调度问题进行了研究，提出了一种改进的遗传算法求解该问题。论述了改进遗传算法的 编码、初始化、选择、交叉和变异操作，通过与基本遗传算法的仿真比较，验证了该算法在收敛速度 和最优解值上的优越性。 (In order to solve the job shop scheduling problem considering the total production cost, the process cost, inventory management cost and delay penalty are introduced. This job shop scheduling problem is studied, and an improved genetic algorithm is proposed to solve this problem. The improved genetic algorithm is discussed. Encoding, initialization, selection, crossover and mutation operation, the convergence speed of the algorithm is verified through simulation comparison with the basic genetic algorithm. And the superiority of the optimal solution. )

相参脉冲串复调制信号，实现串口的数据采集，线性调频脉冲压缩的Matlab程序。( Complex modulation coherent pulse train signal, Achieve serial data acquisition, LFM pulse compression of the Matlab program.)