ASK通信编程仿真源程序

CDMA中PN、Walsh码应用及调制解调的仿真实现-CDMA in the PN, Walsh code modulation and demodulation application and the Simulation

本程序实现了DFE下的rake接收机，程序简单易懂，极具逻辑性，相信很适合通信专业的人士学习-This program realises the DFE rake receiver,which is very clear and easy to understand. Definitely, this is appropriate for anyone who majored in telecommunication

通过MP（代表其中一个P口）的高4位来控制，AA`BB`-4，5，6，7脚。12细分，没行数组里面分4对，每对数第一个加到P口控制电流方向，第二个数控制通电时间。正转AA`-BB`-A`A-B`B,数组由1到12行的读取，反转B`B-A`A-BB`-AA`,数组由12到1行的读取。参数POWER表示电机启动还是不启动，DIRECT参数表示方向，SPEED表示速度等级，每项通电时间用数组中的植/SPEED。本程序没考虑要走多少步的情况，调用一次就走一步。-Through the MP (on behalf of one of P I) of high 4 to control, AA `BB`-4,5,6,7 feet. 12 segments, no line inside the sub-array of four pairs, each of the P added to the number of the first current direction of population control, the second time the number of control power. Are transferred AA `-BB`-A `AB` B, the array from 1-12 line read, reverse B `BA` A-BB `-AA`, array 12-1 by the line read. POWER express motor parameters activated or not activated, DIRECT express direction parameter, SPEED express speed grades, each time power array sik/SPEED. This procedure did not consider how to go step-by-step situation, call a step away.

DS18b20的温湿度控制， DS18b20的温湿度控制，-this is very goog!~this is very goog!~this is very goog!~this is very goog!~

QAM调制的基本原理 QAM调制实际上是幅度调制和相位调制的组合。相位 + 幅度状态定义了一个数字或数 字的组合。QAM的优点是具有更大的符号率，从而可获得更高的系统效率。通常由符号率 确定占用带宽。因此每个符号的比特（基本信息单位）越多，效率就越高。-QAM modulation of the basic principles are in fact QAM modulation amplitude modulation and phase modulation of the portfolio. Phase+ margin status defines a combination of numbers or figures. The advantage of QAM symbols are greater rate, thus the system efficiency will be higher. Symbol rate is usually determined by the occupied bandwidth. Thus each bit symbols (basic units of information) the more the higher the efficiency.

手机连接ASP服务锻-phone services forging links ASP

huffman and entropy approach

支持XMODEM,YMODEM,FAX协议的串口通信软件包 -Commnication libraray supports XMODEM,YMODEM,FAX protocol

链路路径损耗包括距离相关的路径损耗，阴影衰落，快衰落和天线增益。仿真考虑了域频 和时域快速信道变化。在每个RB中，信道（TX和RX天线之间的链路）被假定为具有零均值的复杂性白高斯随机变量，这在RB的频率范围内（180千赫）和 1 毫秒的持续时间内是恒定的。相邻的RB和时间间隔之间的信道变动是独立的。

AnyDATA的CDMA模块AT指令集，很有用的AnyDATA CDMA modem AT CMD-v32-AnyDATA