全新的B/S结构开发方式,用纯JS+HTML实现了类似C/S的强大浏览器交互,查询及分页浏览速度提高几倍,可以成批录入数据,有完整的数据库表访问和纯web打印
上传时间: 2016-03-17
上传用户:米卡
This project aim was to build wireless software modem for data communication between two computers using an acoustic interface in the voice frequency range (20Hz– 20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz – 20,000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz – 16,000Hz). The test files used as information files were text files. This goal was attained both in an incoherent scheme and in a coherent scheme. Build under Matlab code, our modem uses OFDM (orthogonal frequency division multiplexing) modulation, synchronization by LMS sequence, channel estimation (no equalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of 2 or 4. To optimize the probability of error, these symbols were mapped using Gray mapping. Report
标签: communication computers software wireless
上传时间: 2014-05-29
上传用户:wangdean1101
《Neural Network Design》 Martin T. Hagan, Howard B. Demuth, Mark H. Beale 一书中相关matlab演示程序软件包。对于学习很有参考。
上传时间: 2016-03-19
上传用户:zhanditian
Mahafza B.R, Elsherbeni A.Z. - MATLAB Simulations for Radar Systems Design - 2004 对于雷达系统设计师来说这是一本难得的宝典
标签: A.Z. Simulations Elsherbeni Mahafza
上传时间: 2016-03-20
上传用户:pinksun9
对称密码体制的发展趋势将以分组密码为重点。分组密码算法通常由密钥扩展算法和加密(解密)算法两部分组成。密钥扩展算法将b字节用户主密钥扩展成r个子密钥。加密算法由一个密码学上的弱函数f与r个子密钥迭代r次组成。混乱和密钥扩散是分组密码算法设计的基本原则。抵御已知明文的差分和线性攻击,可变长密钥和分组是该体制的设计要点。
上传时间: 2013-12-14
上传用户:shanml
基于MSP430单片机TimerB的数字->模拟信号转换的设计.利用MSP430定时器B产生PWM,然后再通过RC滤波,得到直流或交流电压信号.此方法成本低廉,可靠性高,易于使用.
上传时间: 2013-11-26
上传用户:lanjisu111
c语言编写的B+树,可实现树的构造和记录查找。
上传时间: 2016-03-27
上传用户:朗朗乾坤
1.c企业发放的奖金根据利润提成。 2.c 计算器 3.c 班级通信录 4.c 求x的y方的低三位值 5.c a b 两数组分别正逆序相加
上传时间: 2014-08-24
上传用户:天涯
A* sudo sudo/* B* adduser script adduser C* rmuser script rmuser E* tout tout/* F* dumdum dumdum G* lostfile lostfile H* Mkfl.localsys Makefile.localsys I* spacegripe spacegripe J* sendmail.cf sendmail.cf N* remote remote.c O* distributed conrol distrib/* P* hosts and name server makerevhosts Q* xargs xargs/*
标签: adduser script rmuser sudo
上传时间: 2016-03-29
上传用户:gxrui1991
bool运算(~a)&(b)二进制十进制显示
上传时间: 2016-04-02
上传用户:小码农lz