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模拟电子 三电平变换器STATCOM空间矢量调制
This paper presents a space vector modulation(SVM)-based switching strategy for a three-level neutral point clamped (NPC) converter that is adapted as a STATCOM.
技术资料 Qi无线充电原理
近距电能传输——高效安全近距电能传输一般基于电磁感应原理进行。在此技术基础上,当接收器邻近发射器时才会进行电能传输。电磁感应技术的历史长达百年,多年米一直应用于各类电子产品中—如此普及全因其简单、高效以及安全技术概览以下将为你简要介绍无线电能传输技术。System Overview(Communication)Receiver sends mes ...
书籍 Fundamentals_of_Global_Positioning_System1
The purpose of this book is to present detailed fundamental information on a
global positioning system (GPS) receiver. Although GPS receivers are popu-
larly used in every-day life, their operation principles cannot be easily found
in one book. Most other types of receivers process the input signals ...
技术资料 一种低时延的基于流水型译码器的BICM算法
本文将低时延的流水型译码器应用到BICM(bit-interleaved coded modulation)算法中,与同样使用8-PSK调制、卷积编码的BICM-ID(bit-interleaved
邮电通讯系统 This program simulates the bit-error-rate (BER) performance of OSTBC with L=4 antennas over the fr
This program simulates the bit-error-rate (BER) performance of OSTBC
with L=4 antennas over the frequency flat Rayleigh block fading channel
The code is developed for real orthogonal design, code rate 1/2
modulation- 16 QAM with gray coding resulting in 2 bits/sec/Hz.
技术资料 基于FPGA的新型混合 DPWM方法及其实现
数字脉宽调制器 DPWM(Digital Pulse Width Modulation)是数字控制开关电源的核心。一般在 DPWM 的实现中,存在 DPWM 分辨率与系统工作频率之间的矛盾。本文提出了
通讯/手机编程 The exercise should be finished in English. 2. According to Prof. Zhang s requirement, this exercis
The exercise should be finished in English.
2. According to Prof. Zhang s requirement, this exercise mainly focuses on the BER performance of some wireless communication system using specific coding and modulation type through the AWGN channel. Signal-to-Noise ration (SNR) varies from 5dB to 20dB.
教程资料 基于CPLD的QDPSK调制解调电路设计
为了在CDMA系统中更好地应用QDPSK数字调制方式,在分析四相相对移相(QDPSK)信号调制解调原理的基础上,设计了一种QDPSK调制解调电路,它包括串并转换、差分编码、四相载波产生和选相、相干解调、差分译码和并串转换电路。在MAX+PLUSⅡ软件平台上,进行了编译和波形仿真。综合后下载到复杂可编程逻辑器件EPM7128SLC84-15中 ...
可编程逻辑 基于CPLD的QDPSK调制解调电路设计
为了在CDMA系统中更好地应用QDPSK数字调制方式,在分析四相相对移相(QDPSK)信号调制解调原理的基础上,设计了一种QDPSK调制解调电路,它包括串并转换、差分编码、四相载波产生和选相、相干解调、差分译码和并串转换电路。在MAX+PLUSⅡ软件平台上,进行了编译和波形仿真。综合后下载到复杂可编程逻辑器件EPM7128SLC84-15中 ...
Linux/Unix编程 The Viterbi algorithm is the same as the binary case with one main difference: The survivor sequence
The Viterbi algorithm is the same as the binary case with one main difference: The survivor sequences include the uncoded bits, which are decided at each trellis stage when selecting one of two parallel branches with the largest correlation metric.
Presently, only 8-PSK modulation is considered. E ...