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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
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2002_sim_reconf
2002_sim_reconf
- 2022-03-30 08:06:16下载
- 积分:1
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arm zhiling pdf wen dang
arm zhiling pdf wen dang
- 2022-01-24 12:58:25下载
- 积分:1
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怎样在系统中设置Java的环境变量
怎样在系统中设置Java的环境变量-how to set up the system environment variables Java
- 2022-02-10 01:29:14下载
- 积分:1
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基于ZigBee协议的病房呼叫系统研制
研制一种基于无线传输协议的病员呼叫系统, 避免以住系统布线复杂的缺点...
基于ZigBee协议的病房呼叫系统研制
研制一种基于无线传输协议的病员呼叫系统, 避免以住系统布线复杂的缺点-Ward based on the ZigBee protocol Call System
- 2022-08-24 23:07:01下载
- 积分:1
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先创建文本文件IN.DAT,在文件中写20个四位整数。
编写函数readDat()把从文件中读出这些数并存入数组a中;编写函数Calvalue( ), 其功...
先创建文本文件IN.DAT,在文件中写20个四位整数。
编写函数readDat()把从文件中读出这些数并存入数组a中;编写函数Calvalue( ), 其功能要求:
1. 求出这文件中共有多少个正整数totNum
2. 求这些数右移1位后, 产生的新数是偶数的数的个数totCnt, 以及满足此条件的这些数(右移前的值)
的算术平均值totPjz。
最后在main( )函数中把所求的结果输出。-First create a text file IN.DAT, wrote in the paper four integer 20. The preparation of function readDat () to read from the file into an array of these and a number of preparation function Calvalue (), its functional requirements: 1. Obtained in this paper the total number of positive integer totNum 2. For those few shifted to right one after the new number is the number of even a few totCnt, as well as to meet the conditions of these (the value of the pre-shifted to right) the arithmetic mean totPjz. Finally, in the main () function to output the results of the request.
- 2022-11-28 05:35:03下载
- 积分:1
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WINDOWS核心编程笔记
WINDOWS核心编程笔记-core Windows Programming Notes
- 2022-07-15 23:53:33下载
- 积分:1
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相当不错的软件测试编制规范
相当不错的软件测试编制规范- Quite good software test establishment standard
- 2022-03-20 04:24:29下载
- 积分:1
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Linux的命令
Linux常用命令-Linux commands
- 2022-04-17 00:21:29下载
- 积分:1
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AlexisEditor c#生成chm,并制作编辑器
AlexisEditor c#生成chm,并制作编辑器,全部源码,包括现有文档生成chm电子书,网页生成电子书,手动编辑生成电子书等等功能,十分方便!
- 2022-01-26 02:03:17下载
- 积分:1