WLAN仿真－发送机 wlan No Comments 设置完系统参数后，开始产生发送数据。 1. 产生随机的发送bit（tx_bits），这里不考虑信道编码。 2. QAM映射 3. 将数据映射到不同载波，形成OFDM符号 4. 产生pilot，并将pilot插入OFDM符号中 5. 加入dc和guard子载波 6. 进行ifft，将频域信号变到时域，并加入循环前缀 7. 对信号进行overlap window 8. 在时域产生short preamble 9. 在时域产生long preamble 10. 将preamble和数据符号组成packet 11. 升采样 得到信道传输的数据Tx_signal_up 具体程序见附件 wlan_transmitter.m
上传时间： 2016-11-09
上传用户：exxxds
All people curious about how Linux works and why it is so efficient will find answers here. After reading the book, you will find your way through the many thousands of lines of code, distinguishing between crucial data structures and secondary ones—in short, becoming a true Linux hacker.
标签： efficient curious answers people
上传时间： 2013-12-29
上传用户：lifangyuan12
Testability is the concern most often voiced by Texas Instruments (TIä ) application specific integrated circuit (ASIC) users. This document is intended to consolidate TI policies into a coherent approach to designing for testability. It is not intended as a specification, but as a guide you can use for developing test strategies when designs are being initiated
标签： Testability Instruments application specific
上传时间： 2016-11-13
上传用户：wfl_yy
51单片机C语言多种点阵屏驱动程序（开发软件为keil C ---8字点阵屏左移程序，64_16点阵屏驱动程序，上移显示程序，左移显示程序）51 monolithic integrated circuit C language many kinds of lattice screen driver (develops the software is keil C ---8 character lattice screen left shift procedure, the 64_16 lattice screen driver, uppers shift the display sequence, the left shift display sequence
上传时间： 2014-01-04
上传用户：Ants
The smspdulib library is intended for more transparent interaction with SMS PDU. This thought over hierarchy of classes will allow you to create new classes for other types of short messages using the realized base functionality. At present, the following types of short messages are supported: status report, SMS (with long (large) SMS parts support)
标签： interaction transparent smspdulib intended
上传时间： 2013-12-23
上传用户：小眼睛LSL
ResOrg 图形化管理Vc项目的资源ID的工具的源代码。 ResOrg - Manage and Renumber Resource Symbol IDs Introduction The Resource ID Organiser (ResOrg for short) is an Add-in for Visual C++ designed to help overcome one of the most annoying (and unnecessary) chores of developing/maintaining Windows applications - maintaining resource symbol ID values.
标签： ResOrg Introduction Renumber Resource
上传时间： 2013-12-25
上传用户：dsgkjgkjg
The AVRcam source files were built using the WinAVR distribution (version 3.3.1 of GCC). I haven t tested other versions of GCC, but they should compile without too much difficulty. * The source files for the AVRcam had the author name and copyright information added back into them after the judging of the project, since it states in the competition rules that the author s name can not be present during their inspection. * The included source files are the ones that were submitted for the entry into the Circuit Cellar contest. I have continued to develop the AVRcam, and have added several new features (such as ignoring objects that aren t larger than a minimum size, removing tracked objects that overlap with each, and some general optimizations). If you are interested in the latest source, email me at john@jrobot.net * For more info about the AVRcam, check out http://www.jrobot.net John Orlando August 20, 2004
标签： distribution version AVRcam source
上传时间： 2016-12-30
上传用户：GavinNeko
A novel met hod t o p artially compensate sigma2delta shap ed noise is p rop osed. By injecting t he comp en2 sation cur rent int o t he p assive loop f ilte r during t he delay time of t he p hase f requency detect or ( PFD) , a maximum reduction of t he p hase noise by about 16dB can be achieved. Comp a red t o ot he r compensation met hods , t he tech2 nique p rop osed he re is relatively simple and easy t o implement . Key building blocks f or realizing t he noise cancel2 lation , including t he delay va riable PFD and comp ensation cur rent source , a re sp ecially designed. Bot h t he behavior level and circuit level simulation results a re p resented.
标签： sigma2delta compensate injecting artially
上传时间： 2013-12-18
上传用户：qlpqlq
OReilly.Java.Rmithis book provides strategies for working with serialization, threading, the RMI registry, sockets and socket factories, activation, dynamic class downloading, HTTP tunneling, distributed garbage collection, JNDI, and CORBA. In short, a treasure trove of valuable RMI knowledge packed into one book.
标签： serialization strategies threading provides
上传时间： 2014-01-15
上传用户：731140412
Design of Integrated Circuits for Optical Communications deals with the design of high-speed integrated circuits for optical communication systems. Written for both students and practicing engineers, the book systematically takes the reader from basic concepts to advanced topics, establishing both rigor and intuition. The text emphasizes analysis and design in modern VLSI technologies, particularly CMOS, and presents numerous broadband circuit techniques. Leading researcher Behzad Razavi is also the author of Design of Analog CMOS Integrated Circuits.
标签： Communications Integrated high-speed Circuits
上传时间： 2013-12-21
上传用户：zhouchang199
