-
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...
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.
- 2022-10-21 03:00:04下载
- 积分:1
-
C language standard. C99 official documents, and C89 reference to the document
C语言标准。c99官方文档,用来和c89参照的文档-C language standard. C99 official documents, and C89 reference to the document
- 2023-04-05 18:00:04下载
- 积分:1
-
一篇关于fluent的博士论文,内容很全面
一篇关于fluent的博士论文,内容很全面-A doctoral thesis on the fluent, the content is comprehensive
- 2023-06-20 20:00:06下载
- 积分:1
-
一个简单的计算器!
一个简单的计算器!-A simple calculator!
- 2022-06-17 02:03:03下载
- 积分:1
-
柱状换位密码
到目前为止,这无异于一个特定路由的密码。柱状换位建立在关键词来订购我们读取的列的方式,以及以确定有多少列使用。
- 2022-03-26 16:57:35下载
- 积分:1
-
java语言编程车间SL
Java Language Programming Workshop SL-285
- 2022-05-22 13:26:33下载
- 积分:1
-
MPEG4的官方文档,此为MPEG4的Visual视频方面的描述
MPEG4的官方文档,此为MPEG4的Visual视频方面的描述-MPEG4 official documents, such as the Visual MPEG4 video description!
- 2023-04-26 10:25:04下载
- 积分:1
-
windows exe file structure, initialize, etc.
windows exe文件的结构、初始化-windows exe file structure, initialize, etc.
- 2022-10-16 22:30:02下载
- 积分:1
-
MIPS内核的初始化。
mips core init.
mips32r2 24kec
for mp3 mp4.
...verfiy-mips core init.
- 2022-07-08 11:29:59下载
- 积分:1
-
文件中提取图标,并显示在图片框上
文件中提取图标,并显示在图片框上- In the document withdraws the chart sign, and demonstration on
picture frame
- 2022-03-26 17:44:11下载
- 积分:1