yiqijingdulilun5-8

实验一 Matlab使用及离散时间傅立叶变换 实验二应用傅立叶变换对信号进行频谱分析 实验三 数字滤波器的设计 (Experiments using Matlab and a discrete-time Fourier transform second experiment the signal Fourier transform spectrum analysis experiment three digital filter design )

主要为一个Gui演示平台，能仿真实现不同psk调制及不同状态数的STTC编码，在命令窗口输入ui_start即可进行(Gui primarily a demonstration platform, to achieve different simulation psk modulation and coding of different states of STTC in the command window can be input ui_start)

code for mean and median filters

OFDM simulaion MATLAB code

QAM数字通信系统仿真程序，包含了发射、调制、编码、信道、解码、解调和接收模块，适合初学者。(QAM digital communication system simulation program, including the launch, modulation, coding, channel decoding, demodulation and receiver module, suitable for beginners.)

This is a Hybrid PSO GSA Aigorithm.A new hybrid population-based algorithm (PSOGSA) is proposed with the combination of Particle Swarm Optimization (PSO) and Gravitational Search Algorithm (GSA). The main idea is to integrate the ability of exploitation in PSO with the ability of exploration in GSA to synthesize both algorithms’ strength. Some benchmark test functions are used to compare the hybrid algorithm with both the standard PSO and GSA algorithms in evolving best solution.

说明：  高斯塞德尔迭代法求解线性方程组的MATLAB程序(High Sisaideer iteration for solving linear equations in the MATLAB program)

1/2删除卷积码（3/4速率）的编码和译码，亲测可用(1/2 convolutional code to delete (3/4 rate) encoding and decoding, the pro-test available)

The receiver performance is quantified by depicting the receiver operating char- acteristics (ROC) curves. This curves serve as a tool to and study the performance of a sensing scheme. ROC graphs are employed to show trade-of vs between detection probability and false alarm rates, (i.e. PD versus PFA), thus allowing the determination of an optimal threshold. To illustrate the performance of energy detectors, we generate complementary ROC curves (the average probability of miss detection $ P_{md} 1 - P_d$ versus the false alarm probability $P_f$ for different receiver structures and in different fading environments.Fig. 1 illustrates the complementary ROC curves for a single channel reception (no diversity) over AWGN channels. This figure depicts the complementary ROC curves for energy detectors.

IEEE 2013 base papers on power electronics