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series normal condition 345

this is the source code for Matlab & simulink for digital communication. this folder contains all the matlab code in the textbook.

本文先用灰色GM(1,1)模型对陕西省GDP 做预测, 经过检验, 再用此模型确定另外一些未知指标, 最后通过确定的这些指标用 灰色GM(1,N)模型作预测, 通过比较总结两种模型各自的特点, 从而科学的指导陕西省经济发展,国内生产总值预测模型具有重要的现实意 义。 (This article first gray GM (1,1) models do forecast GDP of Shaanxi province, on examination, then this model to determine other unknown targets, and finally through the identification of these indicators of gray GM (1, N) model for prediction, by Comparison of two models summarize the characteristics of their own, so the guidance of scientific economic development in Shaanxi Province, China' s GDP forecast model has important practical significance.)

采用一种松弛牛顿法，对IEEE33节点系统进行潮流计算，并得出正确结果。(Newton s method uses a relaxation programming for IEEE33 node system and derive the correct results)

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说明：  里面包含详细的CFAR公式推导及原理，里面的公式可以对照雷达信号处理基础一书中的第七章部分(It contains detailed derivation and principle of CFAR formula.)

扩频通信条件下采用QPSK，脉冲干扰条件下仿真误码率的变化(Under the conditions of use of spread spectrum communication QPSK, pulse jamming simulation of changes in the error rate)

二维嘉伯滤波器的设计，用于图像信号滤波，对图像进行滤波设计(The design of the 2 Weijia Bo filter, used for image signal filtering, image filter design)

循环迭代次数对 Turbo 码性能的影响(The impact of loop iterations of Turbo code performance)

说明：  mmea进化算法，学习的典范，可以直接运行的，呵呵(mmea evolutionary algorithm, learning model, can run, huh, huh)