Description: 目前的智能机在硬件上多采用双cpu的架构，一个是基带处理器，主要处理数字信号、语音信号的编码解码以及GSM通信协议，另一个是应用处理器，运行操作系统和各种应用程序。基带处理器、射频和其它外围芯片作为一个模块，成为GSM/GPRS modem，提供AT命令接口。网络的应用已经是一个需求的热点，而目前的GSM模块大多都能支持GPRS功能。应用处理器通过AT命令集与带GPRS功能的无线通讯模块通信，为实现网络的应用提供了一个最底层的支持。
-Intelligent machines in the current hardware on many dual-cpu architecture of a baseband processor are mainly deal with digital signals, voice signals, and GSM codecs communication protocol, and the other is the application processor, operating system and applications running procedures. Baseband processor, radio frequency and other peripheral chips, as a module, as a GSM/GPRS modem, provided by AT command interface. Application of network needs is a hot spot, and most of the current GSM module can support GPRS function. Application processor through the AT command set and functionality with GPRS wireless communication module, in order to achieve the application of the network provides a bottom support. Platform: |
Size: 194560 |
Author:eleven |
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Description: 本文利用核心芯片TDA5051A，采用ASK（幅度键控）调制技术，建立电力线通信系统，实现数字信号在电力线上进行传输。
关键词:电力线通信 TDA5051A 调制解调器
-In this paper, the core chip TDA5051A, using ASK (amplitude shift keying) modulation technology, the establishment of power line communication systems, digital signal transmission in the power line.
Keywords: PLC modem TDA5051A Platform: |
Size: 1222656 |
Author:黄增华 |
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Description: 数字通信调制解调，系统性能分析，涵盖绝大多数数字通信技术-Modem digital communication, system performance analysis, covering the vast majority of digital communication technology Platform: |
Size: 95232 |
Author:高翔 |
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Description: 一个Modem测试软件，使用多线程串口通信技术来实现对Modem的检测，可以同时进行多个串口的检测-A Modem test software, the use of multi-threaded serial communication technology to achieve the detection of the Modem, you can simultaneously test a number of serial Platform: |
Size: 59392 |
Author:jojo |
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Description: AVR控制GPS移动电话(atmega8)设备本身是非常小，就好像已经存在的GPS模块（GM862）一样大。Alexander Weber连接这个模块到atmega8微处理器,并且使用串口modem通讯协议。设备可以发送带有GPS位置信息的文字短信-AVR control of GPS mobile phones (atmega8) the equipment itself is very small, just like GPS modules that already exist (GM862) the same size. Alexander Weber connect the module to atmega8 microprocessors, modem and serial port communication protocol used. Equipment can be sent with GPS position information of the text message Platform: |
Size: 35840 |
Author:凌云 |
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Description: This is a Simulink Model I created for a Digital Communication Systems class. It demonstrates Carrierless Amplidute Phase(CAP) Modulation and uses a raised cosine pulse to implement a 16-QAM modem. Platform: |
Size: 7168 |
Author:Rafal |
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Description: 无线MODEM的通讯源码,其中包括了短信的收发,串口通讯等-MODEM wireless communication source, including send and receive text messages, serial communications Platform: |
Size: 2221056 |
Author:whsky |
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Description: 本书详细介绍了利用Visual C++进行串口通信编程的各种方法和技巧，并通过生动的讲解和丰富的应用实例让读者进一步学习并掌握这一技术。本书共分9章，内容主要包括数据通信的基本概念、串口通信的RS- 232C/RS-485/RS-422标准、并口通信的IEEE 1284 1994标准、Modem的基础知识和AT命令集、传真机的传真协议、PLC(可编程逻辑控制器)和单片机等。-The book details the use of Visual C++ for serial communication of a variety of programming methods and techniques, and through vivid and rich on the application to allow readers to learn and master this technology. The book is divided into 9 chapters, mainly including the basic concepts of data communications, serial communications, RS-232C/RS-485/RS-422 standard parallel port communications IEEE 1284 1994 standard, Modem in basic knowledge and the AT command set , fax machines, fax agreement, PLC (programmable logic controller) and single-chip and so on. Platform: |
Size: 11023360 |
Author:章红军 |
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Description: msp430f149 实现modem数据采集传输的通讯系统的设计
电路图和程序
串口通信 复位监控
modem】
-msp430f149 to achieve modem data collection and transmission of the communication system design and procedures for serial communication circuit Reset Monitor Platform: |
Size: 21504 |
Author:JEFF |
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Description: 国外的详细的OFDM设计过程文档，对学习OFDM非常有帮助，并且有仿真结果。-This report discusses the design and implementation of an OFDM modem for a simplex communication
between two PCs over a frequency selective channel. First a brief introduction is
provided by explaining the backrground and the specification of the project. Then the report
deals with the system model. Each block of the OFDM system is described (IFFT/FFT, cyclic
prefix, modulation/demodulation, channel estimation, bit loading). In the following section, the
system architecture is analysed. The transmission protocol, as well as the system parameters
are explained in details. Then, the DSP implementation is discussed. Finally, the results are
provided in the last chapter. Platform: |
Size: 1709056 |
Author: |
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Description: 手机AT指令集，用来开发数据线或者红外线连接手机的程序，AT指令和最早的那种给Modem通讯的指令很像，不过这个是给手机用的而已。-Mobile AT command set used to develop the data cable or infrared to connect cell phone program, AT commands and the first kind of instruction to the Modem communication like, but this is for mobile phone use only. Platform: |
Size: 2826240 |
Author:王岩 |
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Description: 这是一个多线程的串口通信例子，可供大家借鉴-This is an example about multiple thread communication with serial port. Platform: |
Size: 57344 |
Author:ccj |
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Description: 测试串口通信程序，实现串口modem通信功能-Test serial communication program to achieve serial modem communication function Platform: |
Size: 184320 |
Author:吴辉 |
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Description: 这是用AT命令操作Modem通信的类,类名为CYsATModem，运行效果十分好!-This is the Modem communication with the AT command operation of the class, the class called CYsATModem, run the results are quite good! Platform: |
Size: 75776 |
Author:pmf9619 |
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Description: 西门子MC55IMODEM模块编程，实现短信和GPRS-TCP/IP两种通信方式，采用状态机处理。实时性更高，模块做到独立，耦合性小。值得参考-Siemens MC55IMODEM module programming, SMS, and GPRS-TCP/IP two kinds of communication, using state machine processing. Real-time high, the module to achieve independence, coupled with low. Worthy Platform: |
Size: 10240 |
Author:涂海书 |
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