ABAQUS用户子程序

WLAN仿真－发送机 wlan No Comments 设置完系统参数后，开始产生发送数据。 1. 产生随机的发送bit（tx_bits），这里不考虑信道编码。 2. QAM映射 3. 将数据映射到不同载波，形成OFDM符号 4. 产生pilot，并将pilot插入OFDM符号中 5. 加入dc和guard子载波 6. 进行ifft，将频域信号变到时域，并加入循环前缀 7. 对信号进行overlap window 8. 在时域产生short preamble 9. 在时域产生long preamble 10. 将preamble和数据符号组成packet 11. 升采样 得到信道传输的数据Tx_signal_up 具体程序见附件 wlan_transmitter.m-WLAN Simulation- wlan No Comments transmitter system parameters set finished, the beginning to have to send data. 1. Have sent random bit (tx_bits), here does not consider channel coding. 2. QAM mapping 3. The data is mapped to a different carrier to form OFDM symbols 4. Have a pilot, and pilot inserted OFDM symbols 5. Adding dc and guard subcarriers 6. To carry out ifft, will change the frequency domain signal to time domain, and add cyclic prefix 7. the signals overlap window8. In the time domain have a short preamble9. In the time domain have a long preamble10. the preamble and data symbols packet11. or sampling re

jQuery全国高校三级联动下拉框基于jquery.1.(JQuery is based on jquery.1.)

最小二乘回归分析算法，matlab开发工具箱中的支持向量机，小波包分析提取振动信号中的特征频率。( Least-squares regression analysis algorithm, matlab development toolbox support vector machine, Wavelet packet analysis to extract vibration signal characteristic frequency.)

诛仙答题易语言源码： 题目 1、服务器内战场在试验开启状态和正式开启状态下的开启时间分别是？ A. 试开阶段每天18:00-22:00，当服务器玩家等级满足条件后全天开放 B. 不间断开启一万年 C. 太阳从西边出来的时候 -Easy answer诛仙language source: Title 1, the server in the trial turned on the battlefield and to open a formal state opening time yes? A. try to open every day 18:00-22:00 stage, when the server hierarchy to meet the conditions for players and opening up after the day uninterrupted B. Open C. Ten thousand years out of the sun from the west when

C++程序设计课本源码,供学习计算机的大学生们参考-C source program design textbooks for students learning computer as a reference

西门子PLC 常用通讯案例及配置，适合入门使用(SIMENS PLC Common communication cases and configurations)

simulink pfc 很好的文件啊啊啊啊啊啊啊啊啊啊啊啊啊啊啊啊啊啊啊啊啊啊(simulink pfc Very good documents,)

威纶通触摸屏直接控制海普蒙特变频器，可以直接控制启停和设置频率(Willon Touch Screen Direct Control Hepmont Inverter,Start-stop and setting frequency can be controlled directly.)

说明：  实现逆变器mpc控制的功能，模型由本人自己搭建，可供交流学习，严禁用于商业用途(Realize the function of MPC control of inverters. The model is built by myself. It can be used for AC learning. It is strictly forbidden to be used for commercial purposes.)

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