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Description: GSM中半速率语音编解码源码，说得还不清楚吗，20字，20字，20字，受不了-GSM half rate speech codec source, also not clear what is right, 20 words, 20 words, 20 words, can not stand
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Size: 183009 |
Author: liu |
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Description: For the simulation of a GSM transmission channel it was decided to use an information channel TCH (Traffic Channel) with high speed (Full Speed).
This type of channel allows a rate of 13 Kbps. In order to create the model of TCH channel for GSM the specifications of group 3GPP were followed which are listed in [ 3GPPd ] -[3GPPg ], which they comprise of the European standard of GSM.
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Size: 72515 |
Author: zhouzheng_xd |
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Description: 这是Half rate speech(GSM 06.20）- This is Half rate speech (GSM 06.20)
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Size: 2515968 |
Author: 李嘉楠 |
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Description: GPRS(General Packet Radio Service)是通用分组无线业务的简称。GPRS是GSM Phase2.1规范实现的内容之一，能提供比现有GSM网9.6kbit/s更高的数据率。GPRS采用与GSM 相同的频段、频带宽度、突发结构、无线调制标准、跳频规则以及相同的TDMA帧结构。因此，在GSM系统的基础上构建GPRS系统时，GSM系统中的绝大部分部件都不需要作硬件改动，只需作软件升级。-GPRS (General Packet Radio Service) is a General Packet Radio Service abbreviation. GPRS GSM Phase2.1 norms to achieve one of the elements that can provide more than the existing GSM network 9.6kbit/s higher data rate. GSM and GPRS using the same frequency and bandwidth, unexpected structure, the wireless standard modulation, frequency hopping and the same rules TDMA frame structure. Therefore, in the GSM system builds on the GPRS system, the GSM system of most components do not need to make hardware changes, only for software upgrades.
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Size: 1072128 |
Author: 齐征 |
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Description: 依据GSM 05.03建议，在高斯干扰和突发干扰下，对业务信道中的全速率语音信道TCH/FS信道做了编码研究，并作信噪误码性能的仿真-based on GSM 05.03, in Gaussian interference and unexpected interference, the right business channel Full-rate voice channels TCH/FS channel coding done a study and make noise letter Error Performance Simulation
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Size: 10240 |
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Description: GSM音频编解码器,我们已经用在了自己的产品上.这个源代码是经过整理后的代码.直接下载用VC编译则可.生成的是库(静态库),绝对值得大家参考.-GSM audio decoder, we have used in their products. The source code is collated code. Direct download can be compiled with VC. The library is generated (static library), and definitely worth your consideration.
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Size: 48128 |
Author: 祥子 |
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Description: 3GPP中GSM的AMR编解码c源码和协议，包含8种不同速率的编解码方式-3GPP GSM AMR codec c-source agreement and contains eight different rate codec approach
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Size: 888832 |
Author: 肯尼斯 |
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Description:
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Size: 182272 |
Author: liu |
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Description: Enhanced Data rate for GSM Evolution
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Size: 190464 |
Author: 天宇 |
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Description: 一个完整gsm通信系统的仿真程序。能计算呼叫阻塞率。-Gsm a complete communication system simulation program. Call blocking rate can be calculated.
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Size: 11264 |
Author: 周云 |
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Description: 用于GSM的增强全速率EFR的语音编码器标准C源码-For the GSM Enhanced Full Rate EFR speech coding standard C source
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Size: 372736 |
Author: huangtao |
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Description: GSM中用于半速率HR的语音编码的标准C实现-GSM in HR for a half-rate voice coding standard C to achieve
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Size: 338944 |
Author: huangtao |
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Description: GPRS是通用分组无线业务(General Packet Radio Service)的简称，它突破了GSM网只能提供电路交换的思维方式，只通过增加相应的功能实体和对现有的基站系统进行部分改造来实现分组交换，这种改造的投入相对来说并不大，但得到的用户数据速率却相当可观。本实例教授大家GPRS基础知识。-GPRS is General Packet Radio Service (General Packet Radio Service) abbreviation, it broke through the GSM circuit-switched networks can only provide a way of thinking, only by increasing the corresponding functional entities and the existing base station system part of the transformation to achieve packet switching, this transformation is not relatively large, but the user data rate is considerable. Professor of the examples of the basic knowledge we GPRS.
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Size: 2108416 |
Author: joe |
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Description: GSM TCH/FS 信道编码仿真
仿真通信系统包括内外编码器、交织重排器、加性/突发或混合干扰信道、去交织反重排器、内外译码器，模拟了信息从信源到信宿的全过程；
在高斯噪声、突发干扰或混合信道下测试每个步骤对误码率和系统性能的影响，通过数字及图形的比较，得出通信系统中各个模块的作用。-GSM TCH/FS channel coding simulation Simulation of communication systems, including internal and external encoder, interleaving rearrangement, and additive/sudden or mixed channel interference, de-interlacing anti-rearrangement, and internal and external decoder, analog information from the source to the letter places the entire process in Gaussian noise, sudden disruption or mixed channel to test each step of the bit error rate and system performance, through the figures and graphics comparison, the communication system in the role of each module.
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Size: 45056 |
Author: 123456 |
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Description: TC35i新版西门子工业GSM模块是一个支持中文短信息的工业级GSM模块,工作在EGSM900和GSM1800双频段,电源范围为直流3.3～4.8V ,电流消耗——休眠状态为3.5mA，空闲状态为25mA，发射状态为300mA(平均)，2.5A峰值；可传输语音和数据信号, 功耗在EGSM900(4类)和GSM1800(1类)分别为2W和1W ,通过接口连接器和天线连接器分别连接SIM卡读卡器和天线。SIM电压为3V/1.8V，TC35i的数据接口(CMOS电平)通过AT命令可双向传输指令和数据,可选波特率为300b/s～115kb/s , 自动波特率为1.2kb/s～115kb/s。它支持Text和PDU格式的SMS(Short Message Service,短消息),可通过AT命令或关断信号实现重启和故障恢复-The new industrial GSM Siemens TC35i module is a short message in support of the Chinese industrial grade GSM module, working in EGSM900 and GSM1800 dual band, power range of DC 3.3 ~ 4.8V, current consumption- dormant for 3.5mA, idle to 25mA, launch status 300mA (average), 2.5A peak can transmit voice and data signals, power consumption in the EGSM900 (4) and GSM1800 (1 category) were 2W and 1W, through the interface connector and antenna connector connected SIM card reader and antenna. SIM voltage 3V/1.8V, TC35i data interface (CMOS level) through the AT command can be bi-directional command and data transmission, an optional baud rate is 300b/s ~ 115kb/s, auto-baud rate is 1.2kb/s ~ 115kb/s. It supports Text and PDU format of SMS (Short Message Service, Short Message Service), available through AT command or signal realize turn-off to restart and Recovery
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Size: 2483200 |
Author: sjl |
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Description: 这是一个关于单片机于GSM模块握手通信的,发送其它AT指令相同，波特率96-This is a study on single-chip module in the GSM communication handshake, send the same as other AT commands, baud rate 96
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Size: 1024 |
Author: 彭军 |
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Description: 采用SIMULINK仿真一个完整的GSM通信系统，有星座图和误码率输出-Using SIMULINK simulation of a complete GSM communications systems, there is the constellation diagram and bit error rate output
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Size: 13312 |
Author: 孙立 |
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Description: GSM模块测试小程序。自动换通讯波特率测试串口，读SIM卡测试，信号强度测试。-GSM module test applet. Automatically for the serial communication baud rate test, reading test SIM card, the signal strength test.
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Size: 4096 |
Author: 李安 |
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Description: GSM标准全速率语音编码标准，是学习改语音压缩标准的权威文档-Standard GSM full-rate speech coding standards
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Size: 390144 |
Author: |
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Description: 本次设计是对GSM TCH/FS信道进行编码设计及性能仿真,仿真通信系统包括内外编码器、交织重排器、加性/突发和混合干扰信道、去交织反重排器、内外译码器，模拟了信息从信源到信宿的全过程； 在高斯噪声、突发干扰或混合信道及瑞利信道下测试每个步骤对误码率和系统性能的影响，通过数字及图形的比较，得出通信系统中各个模块的作用。另外，在GSM TCH/FS 的基础上建立GSM TCH/EFS 信道，对相应的信道环境进行仿真，得出误码率分析。-This design is the GSM TCH/FS channel encoded design and performance simulation, simulation communication system, including internal and external encoder, interleaving rearrangement device, the additive/burst and mixed interference channel, to the cutting device against rearrangement, internal and external decoding and analog information from the source to the destination of the whole process in Gaussian noise, sudden disruption or mixing channel and Rayleigh channel to test each step of the bit error rate and system performance, by comparison of digital and graphic obtained communication systems the role of each module. In addition, GSM TCH/FS based on the established GSM TCH/EFS channel, the corresponding channel environment simulation, the error rate analysis
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Size: 62464 |
Author: 金莉 |
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