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书籍 HSDPAHSUPA+for+UMTS+High+Speed+Radio+Access
The first Third Generation Partnership Project (3GPP) Wideband Code Division
Multiple Access (WCDMA) networks were launched during 2002. By the end of 2005
there were 100 open WCDMA networks and a total of over 150 operators having
frequency licenses for WCDMA operation. Currently, the WCDMA network ...
书籍 Silicon-Based+RF+Front-Ends
Ultra-wideband (UWB) technology enables high data-rate short-range communica-
tion, in excess of hundredmegabit-per-secondsand up to multi-gigabit-per-seconds,
over a wide spectrum of frequencies, while keeping power consumption at low lev-
els. This low power operation results in a less-interfering ...
技术资料 TEF665X 用户指南
TEF665XA (‘Atomic-2’) is a series of unparalleled single-chip car radio devices with a mainstream performance and feature set. The Atomic-2 series consists of two variants; TEF6657A and TEF6659A. The TEF6657A (Atomic-2 Premium) offers worldwide FM and full AM reception including short wave (SW) up ...
书籍 Radio Wave Propagation
One of the prerequisites for the development of telecommunication services is the
understanding of the propagation of the waves, either acoustic, electromagnetic,
radio or light waves, which are used for the transmission of information.
In this work, we shall limit ourselves to the study of radio wa ...
单片机开发 M16C/6S 群是采用64 管脚的塑模LQFP 封装的单片机。该群将电力线通信调制解调器内核（利用了Yitran Communications Ltd公司开发的IT800PLC调制解调器技术）和模
M16C/6S 群是采用64 管脚的塑模LQFP 封装的单片机。该群将电力线通信调制解调器内核（利用了Yitran
Communications Ltd公司开发的IT800PLC调制解调器技术）和模拟前端进行了单芯片化。M16C/60系列CPU内
核实现了高级别的编码效率和高速运算处理，而且，内置的IT800调制解调器内核还采用了Yitran公司的DCSK
（Differential C ...
技术资料 MT2625 datasheet v1.2
MT2625 DatasheetVersion: 1.2Release date: 31 January 2018NB-IoT transceiver• Compliant with 3GPP R13/R14 NB-IoT standard• Supports DL 200kHz bandwidth/UL single tone and multi-tone• Supported RF bands: B1/B2/B3/B5/B8/B11/B12/B13/B17/B18/B19/B20/B21/B25/B26/B28/B31/B66/B70/B71• Supports PSM and e ...
技术资料 解读 5G 新空口-3GPP 与 ITU 标准最新进展
今天，不论你走到哪里，5G 都是众人关注的新技术焦点。二月末举办的 2017 年世界移动通信大会的最新报告表明，5G 时代已经来临。事实是，5G 标准尚未确定，但已经为时不远。对于通信行业来说，去年是十分繁忙的一年，从标准化流程工作到监管机构发布的更新，到我们对提议的新毫米波 (mmWave) ...
技术资料 基于单片机的运动功能康复治疗信号发生器的设计
目的:设计一种功能性电激励(FES)信号发生器,主要用于刺激患者截瘫部位以促进自身部分运动功能的恢复。方法:硬件系统基于AT89C52MCU和DAC0832数模转换芯片。通过分析常见波形和动物实验中提取出的控制运动的神经信号波形的时域特征来设计单片机程序,实现软硬件协同之后,可产生预期波形作为治疗仪的信号源。结果:经过测试,该 ...