汽车行业CAN通讯SAEJ1939标准英文版

S7-200 PLC 的初步设计及编程技巧，适合初学者使用。(S7-200 PLC preliminary design and programming skills, suitable for beginners to use.)

描述了智能天线在无线通信环境下的各种应用。(Describes a smart antenna in a wireless communication environment, a variety of applications.)

LTE系统中小区的选择，根据物理位置或是最大发射功率(enb in LTE system)

this is simply a report on the fading channel on different modulation scheme

pwm整流器的建模仿真，感应双馈发电机系统的仿真，复化三点Gauss-lengend公式求pi。( Modeling and simulation pwm rectifier Simulation of doubly fed induction generator system, Complex of three-point Gauss-lengend the Formula pi.)

说明：  ZTEWelink Wireless Module Driver User Guide for WinCE-V1.2

HART Communication Foundation - Common Tables Specification

Multiple input multiple output techniques combined with orthogonal frequency division multiplexing (MIMO-OFDM) provide a promising approach for wireless systems. However, a serious drawback of the OFDM system is the high peak-toaverage power ratio (PAPR), which may severely affect the power efficiency of RF power amplifiers. In this paper, we propose a simple method to reduce the PAPR of MIMO-OFDM signals based on the use of unused subcarriers. Instead of processing the signals at each transmitter separately, a peak cancelling signal is generated at one antenna and is then applied to all the others with only simple modifications. Simulation has shown that a minimum 2 dB reduction in PAPR can be achieved for all transmit signals using this approach. As the signal processing is nearly all done at a single transmitter, repetition of the operations at each transmitter is avoided, and therefore the overall cost of the system can be significantly reduced.

HART协议解析，非常完整，定能加快研发进度。(HART agreements, some of the information, in the hope that everyone has to help)

CUM200的中文使用说明书，包含CMU200的大部分实用功能(The Chinese CUM200 instructions)