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[matlab] ACTSP DL : 0: 实现了蚁群算法求解TSP问题。注释详细 function[R_best,L_best,L_ave,Shortest_Route,Shortest_Length]=ACATSP(C,NC_max,m,Alpha,Beta,Rho,Q) ------------------------------------------------------------------------- 主要符号说明 C n个城市的坐标，n×2的矩阵 NC_max最大迭代次数 m蚂蚁个数 Alpha表征信息素重要程度的参数 Beta表征启发式因子重要程度的参数 Rho信息素蒸发系数 Q信息素增加强度系数 R_best各代最佳路线 L_best各代最佳路线的长度 ========================================================================= -Ant Colony Algorithm for the realization of the TSP problem. Notes the detailed function [R_best, L_best, L_ave, Shortest_Route, Shortest_Length] = ACATSP (C, NC_max, m, Alpha, Beta, Rho, Q) ------------------------------------------------------------------- The main symbol------ C n that cities coordinates, n × 2 matrix NC_max the largest number of iterations m the number of Alpha ant pheromones characterized the importance of the parameters Beta factor heuristic importance of characterization of the parameters Rho evaporation coefficient of pheromone pheromone Q increase in intensity coefficient R_best best route generations generations L_best the length of the best route ====== ================================================== =================
Date : 2025-12-25 Size : 2kb User : 王晶
[matlab] k2 DL : 0: 6QAM通过带限信道，设码元速率为1000波特，传输信道特性为滚降系数为0.75的滚升余弦频谱的滤波器，试建立测试模型并观察接收信号（等效基带信号）的眼图、星座图和相位转移轨迹图。simulink模型-6QAM through the band-limited channel, located at 1000 baud symbol rate, the transmission channel characteristics for the roll-off factor of 0.75 of spectrum raised cosine filter roll and try to create a test model and observe the received signal (the equivalent baseband signal) of the eye diagram, constellation and phase transfer trajectories. simulink model
Date : 2025-12-25 Size : 4kb User : kang
[matlab] QAM DL : 0: 编写一个含QAM传输的发送和接收模块 1)分别采用复基带仿真和实带通仿真两种形式 a) 实带通仿真时, 载波频率为符号率的4倍 b)发端采用滚降系数0.5的根号升余弦滤波器 2)画出Eb/N0=15dB时的接收波形(收滤波前),取100个采样 3)画出发端输出的眼图和收端过匹配滤波后的眼图(画眼图时不加噪声) 统计误符号率和误比特率与Eb/N0的关系,画出曲线, 与理论计算的曲线相对比 -Prepare to send of one with QAM transmission and receiver module 1), respectively, the complex baseband simulation and the real band-pass simulation in two forms a) the real band-pass simulation, the carrier frequency used for the symbol rate of 4 times b) the originator roll-off factor of 0.5 root raised cosine filter, 2) draw Eb/N0 = 15dB when the received waveform (closing filter), take 100 samples) to draw the originator of the output eye diagram and income side of the eye diagram after the matched filter ( draw the eye diagram without noise) statistics symbol error rate and bit error rate and Eb/N0, draw a curve calculated with the theoretical curve compared
Date : 2025-12-25 Size : 7kb User : 李昌婷
[matlab] Eyediagram-of-2a4PAM DL : 0: 仿真研究2PAM，4PAM眼图特性；分别加入高斯白噪声，码间串扰，研究它们对眼图的影响；改变接收滤波器的滚降系数，研究它对眼图的影响；研究不同波特率对眼图的影响。 -Simulation studies 2PAM, 4PAM eye diagram characteristics were added white Gaussian noise, inter-symbol interference, influence their study eye chart changing the receive filter roll-off factor, the study of its effects on the eye research on different baud rate eye effects.
Date : 2025-12-25 Size : 1kb User : WatcherVC
[matlab] OFDM-Doppler-estimation DL : 0: OFDM信号在无线通信中会受到多普勒频移的影响，从而影响了OFDM信号的正交性，引起载波间的干扰和OFDM信号符号间的干扰，本代码先形成含有N个二进制码元的信号，而这个信号的前半部分和后半部分的信号是一样的，然后根据把这个信号调制成OFDM信号，最后接收端根据这个OFDM信号估计出多普勒因子-OFDM signal in a wireless communication will be subject to Doppler shift of influence, thus affecting the OFDM signal orthogonality, causing interference and interference between the OFDM signal symbol between carriers, the code first formed comprising N binary symbols signal, and the first and second halves of this signal is the same signal, and then the OFDM signal according to the estimated Doppler factor modulates the signal to the OFDM signal received, the last side
Date : 2025-12-25 Size : 8kb User : hero
[matlab] NO3ASK4 DL : 0: 分别产生符合下列要求的眼图，输入调制方式为2PAM和4PAM，符号率为1Hz，等效信道滤波器为升余弦滚降成形滤波器(缺省滚降系数为0.5)： 1) 无噪声和信噪比为20dB的加性高斯白噪声 2) 升余弦滚降系数分别为0.5和1 3) 受到码间串扰影响，信道参数可设为：ch=[0.9806; -0.1961]；(In accordance with the following requirements of eye respectively, the input modulation mode is 2PAM and 4PAM, the symbol rate is 1Hz, the equivalent channel filter for raised cosine shaping filter (default roll off factor of 0.5): 1) additive Gauss white noise with noise free and signal to noise ratio of 20dB 2) raised cosine roll down coefficients are 0.5 and 1, respectively 3) affected by intersymbol interference, the channel parameters can be set as follows: ch=[0.9806; -0.1961];)
Date : 2025-12-25 Size : 3kb User : aaa993360892
[matlab] 16QAM调制解调 DL : 0: % QAMModem.m程序清单 % 仿真4比特原始数据与星座图的编码映射过程； % 完成16QAM信号的调制解调； % 基带信号符号速率 ps ＝1Mbps； % 成形滤波器的滚降因子 a=0.8； % 载波信号频率fc=2MHz ； % 采样频率 Fs=8MHz ； % 绘制16QAM信号的频谱及时域波形； % 采用相干解调法仿真其解调过程； % 绘制解调前后的基带信号时域波形； % 将原始基带数据、QAM已调数据、滤波器系数写入相应的文本文件中。 clc;(%Qammodem. M program list %The coding mapping process of 4-bit original data and constellation is simulated; %Complete the modulation and demodulation of 16QAM signal; %Baseband signal symbol rate PS = 1Mbps; %Roll off factor of shaping filter a = 0.8; %Carrier signal frequency fc = 2MHz; %Sampling frequency FS = 8MHz; %Draw the spectrum and time domain waveform of 16QAM signal; %The coherent demodulation method is used to simulate the demodulation process; %Time domain waveform of baseband signal before and after demodulation is drawn; %Write the original baseband data, QAM adjusted data and filter coefficient into the corresponding text file.)
Date : 2020-05-23 Size : 4kb User : yinying