an serial tool for DOS. Complied in turbo c 2.0,including CDT filter, email ls99...

基于STM32F103C8T6的LoRa模块通信,使用ZLG的SX1276方案，SX1276/77/78 收发器主要采用LoRaTM 远程调制解调器，用于超长距离扩频通信，抗干扰性强，能够最大限度降低电流消耗。借助升特的LoRaTM 专利调制技术，SX1276/77/78 采用低成本的晶体和物料即可获得超过-148dBm 的高灵敏度。此外，高灵敏度与+20dBm 功率放大器的集成使这些器件的链路预算达到了行业领先水平，成为远距离传输和对可靠性要求极高的应用的最佳选择。相较传统调制技术，LoRaTM调制技术在抗阻塞和选择性方面也具有明显优势，解决了传统设计方案无法同时兼顾距离、抗干扰和功耗的问题。

GPRS主台软件，支持DL/T645协议， 实现抄收电表软件。-GPRS Main Desk software, support DL/T645 agreement, realize Collecting meter software.

本文详细介绍IC 制造工艺流程,IC封装测试方法, 企业总结核心技术资料,非常有用.-This paper describes IC manufacturing processes, IC packaging and testing methods, summing up the core of enterprise technical information, very useful.

ftp windows程序 毕业设计 共同欣赏 改错-ftp windows program graduates to appreciate the design of a common error

zigbee cc2430 单片机程序 无线温度采集及串口通信演示-single-chip wireless zigbee cc2430 process temperature acquisition and demonstration of serial communication

qpsk的实现及其星座图希望大家有好的资源可以互相共享-QPSK constellation diagram of the realization and hope that everyone has good resources can be shared with each other

有关QPSK调制解调的仿真程序，包括基带输入波形及其功率谱、QPSK调制信号及其功率谱、AWGN信道输出及其功率谱、通过瑞利信道之前和之后的信号星座图 6)在高斯白噪声和瑞利衰落信道条件下的误码性能以及高斯白噪声的理论曲线，所有误码性能曲线在同一坐标比例下绘制-Relevant QPSK modulation and demodulation of the simulation program, including the baseband input waveform and its power spectrum, QPSK modulation signal and its power spectrum, AWGN channel output and its power spectrum, through the Rayleigh channel before and after the signal constellation of Figure 6) in high- Adams white noise and Rayleigh fading channel under the conditions of BER, as well as the theory of Gaussian white noise curve, all the BER performance curve in the same proportion of coordinates under the map

Discuss 2Tx. 1Rx transmit diversity scheme called Alamouti Space Time Block Coding (STBC)-Discuss 2Tx. 1Rx transmit diversity scheme called Alamouti Space Time Block Coding (STBC)

对原始的 ALOHA 协议的改进是"时隙 ALOHA"，介绍了离散的时隙，并增加最大的吞吐量。一个站可以发送只有初时隙和因而减少碰撞事故。在这种情况下，我们只需要对传输尝试 1 帧时间内不连续 2 帧-次，担心，因为在每个时隙期间只能发生碰撞。

Projeto Mesa 01 controler com Picf877a, versao 1 sem lcd