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mmuos
- 这是一个不到2000行的操作系统，巧妙地利用ARM9 CPU的内存管理单元(MMU)实现进程的切换。ARM9的4G虚拟地址可分成128个进程空间，每个32M。虽然它们的虚拟地址(VA)都是0-(32M-1)，但是对应的MVA(Modified vitual address,由虚拟地址VA和进程号PID组合而来)不一样，设置MVA对应的页表指向不同物理地址就可以很方便地让各进程运行空间相互隔开。代码很少，注释丰富，希望能对想理解操作系统、了解ARM体系结构的朋友有所帮助。 -This is a
SunriseUpload[1].0.9.1
- 基於Asp.net的資料上傳控件,資料分段上傳,並可上傳4G以下的文件,並在上傳時內存耗用非常低-Asp.net on the upload control, data upload section, the following 4G can upload documents, and upload at the very low memory consumption
SI4463
- SILABS新推出SI4463完整DEMO板原理图、PCB图、DEMO程序下载。传输距离1000~2000米 SILABS新推出EZradioPRO系列RFIC:SI4432,适合长远距离的无线数据传输应用.其发射功率+20dbm,接收灵敏度-116dbm,通讯距离2000米 SI4463特点 频率范围= 119–1050 MHz 接收灵敏度 = –126 dBm 调频模式 (G)FSK and 4(G)FSK OOK and ASK 最大输出功率 +20 d
cc2500demo
- 2.4G无线模块程序,CC2500源代码_原理图,pic单片机控制cc2500无线模块,基于CC2500 的点对多点无线通信系统,softeware,基于CC2500无线通信开发包,AT-CC2500EM，STC单片机51例程_CC2500，CC2500SPI-The 2.4G wireless module program, CC2500 source code _ schematic pic microcontroller control cc2500 wireless module, ba
Simulink-Based-LTE-System-Simulator
- Symulink based LTE simulator. An antenna system simulator based on Simulink has been developed by the Chase and Charmant research centers at Chalmers, followed by the implementation of a WCDMA system as a standard in 3G. LTE (Long Term Evolution), as
LTEMIMOOFDM111
- 宽带无线通信是信息化社会发展的助推器，它正在改变人们的生活方式，人 们将可以在任何时候、任何地点享受数字冲浪、视频点播、时频会议等新的时髦。 MIMO系统的信道容量与发射端和接收端的最小天线数成线性关系，这使MIMO技 术成为LTE、B3G和未来4G系统中最有前途的技术之一。-Broadband wireless communication is the booster for the development of information society, it is changin
E01-M24L01P
- E01-M24L01P模块，2.4G无线模块，最大传输速率为2Mbps。Worldwide 2.4GHz ISM band operation • 250kbps, 1Mbps and 2Mbps on air data rates • Ultra low power operation • 11.3mA TX at 0dBm output power • 13.5mA RX at 2Mbps air data rate ̶
553-1504-1-PB
- Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier modulation and multiplexing technique proposed for 3G, 4G LTE-A systems to achieve higher data rates with better spectral efficiency at low latency. Time varying nature of the wi
WLAN-loss-calculation
- WLAN设备的传播损耗计算模型，主要是指以下：Devasirvatham模型，也称为线性路径衰减模型，可用于各种建筑材料2.4G电磁穿透损耗的经验衰减因子模型信号的穿透损耗在这个阶段。-Both WLAN propagation loss calculation model is mainly refer to the following: Devasirvatham model, also known as a linear path attenuation model, the attenu
ME3760-AT-Command-and-Win7-Drive
- 中兴4G模块ME3760的资料和 Win7系统驱动。-ZTE 4G module ME3760 information and Win7 system drivers.
asterisk_gsm.pdf
- List of At commands for phones/modems incl. 3G/4G GPRS/LTE.
LTE-and-the-Evolution-to-4G-Wireless-Design-and-M
- The next generation of cellular technology is dramatically altering the communications landscape, changing the way people access information and interact with one another. At the forefront of the new technology is LTE, the long-term evolution of
u8300c
- 4G 通信模块资料，包括硬件，AT指令集和使用说明等-4G data communication module, including hardware, AT instruction set and instructions for use
MIMO-STBC
- 无线通信系统可以利用的资源包括：空间、时间、频率和功率。在B3G/4G系统中，空间资源和频率资源被重新开发使用，从而大大提高了系统的性能。 多天线技术在发送端和接收端同时使用多根天线，扩展了空间域，充分利用了空间扩展所提供的特征，从而带来了系统容量的提高。目前多天线技术已成为了B3G/4G系统的关键技术之一。 -The resources that the wireless communication system can use include: space, time, freque
ME3630
- 中兴最新推出全网通4G模块，该模块为中兴近期主推模块，压缩包内含硬件使用手册、AT指令手册、产品规格书以及模块驱动软件等文件。
5G evolution of user mobile security
- In this paper they have discussed various security issues of 4G with respect to Wi-max and long term evolution. These issues are discussed at MAC and physical layer level. The security issues are seen in terms of possible attacks, system vulnerabili
华为4G ME909s软件
- 模块业务集成开发示例以及相关的AT命令集合 HUAWEI ME909s Series LTE Module Application Guide-(V100R001_02, English).pdf HUAWEI ME909s Series LTE Module AT Command Interface Specification-(V100R001_01, English).pdf 模块业务集成开发示例V3.0.pdf(HUAWEI ME909s Series LTE Module App
Neoway_N720_AT命令手册（标准版）_V1.5
- N720 是一款基于高通平台的 4G 全网通工业级模块，外型尺寸为 30mm *28mm *2.8mm。工业 级高性能：超宽工作温度达到-40℃到+85℃，静电能力达到 8KV；支持国内移动/联通/电信三大运 营商的 2G/3G/4G 网络制式，适合用于开发无线抄表终端、车载、手持 POS、工业路由器等物联网 通讯设备。(N720 is a 4-G all-network industrial module based on Qualcomm platform. Its size is 3
EC20 R2.1---4G模块
- 4G模块EC20开发资料，硬件设计手册，AT指令，原理图和PCB图封装，完整开发资料。(Development Data of 4G Module EC20 and Hardware Design Manual)
B77 4G板子 驱动+操作手册
- 4G-LTE无线通信功能的实现；中兴B77，4GLTE模块的驱动文件。(ZTE B77 4g-lte module driver, and its user manual. Operation manual for additional at instructions.)