搜索:LONG

找到约 257 项符合「LONG」的查询结果

结果 257
https://www.eeworm.com/dl/534/364153.html 其他

WLAN仿真-发送机 wlan No Comments 设置完系统参数后

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 ...
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https://www.eeworm.com/dl/522340.html 书籍

Power Over Ethernet

December 2007, San Jose, California: It seems a long time ago. I walked into a big networking company to head their small Power over Ethernet (PoE) applications team. Surprisingly, I hardly knew anything about PoE prior to that day, having been a switching-power conversion engine ...
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https://www.eeworm.com/dl/972271.html 技术资料

Java问题宝典2012版

1. Java基础部分 7 1、一个".java"源文件中是否可以包括多个类(不是内部类)?有什么限制? 8 2、Java有没有goto? 8 3、说说&和&&的区别。 8 4、在JAVA中如何跳出当前的多重嵌套循环? 8 5、switch语句能否作用在byte上,能否作用在long上,能否作用在String上? 9 6、short s1 = 1; s1 = s1 + 1;有什 ...
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https://www.eeworm.com/dl/502/29068.html 单片机编程

基于MSP430单片机的智能水位计设计

  为解决我国水位监测野外条件下长期无人看守的问题,研制开发了基于MSP430单片机的智能水位计。从其组成到各功能分别进行了详细的介绍,该智能水位计不仅实现了水位数据的实时监测、记录和定期采集等多种工作模式,而且提高了水位监测精度,实现了水位监测的智能化。   Abstract:   In or ...
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https://www.eeworm.com/dl/633/444481.html Java编程

Generate Possion Dis. step1:Generate a random number between [0,1] step2:Let u=F(x)=1-[(1/

Generate Possion Dis. step1:Generate a random number between [0,1] step2:Let u=F(x)=1-[(1/e)x] step3:Slove x=1/F(u) step4:Repeat Step1~Step3 by using different u,you can get x1,x2,x3,...,xn step5:If the first packet was generated at time [0], than the second packet will ...
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https://www.eeworm.com/dl/522054.html 书籍

Physical Layer Security in Wireless Communications

The ever-increasing demand for private and sensitive data transmission over wireless net- works has made security a crucial concern in the current and future large-scale, dynamic, and heterogeneous wireless communication systems. To address this challenge, computer scientists and ...
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https://www.eeworm.com/dl/522115.html 书籍

Signal Processing for Telecommunications

This paper presents a Hidden Markov Model (HMM)-based speech enhancement method, aiming at reducing non-stationary noise from speech signals. The system is based on the assumption that the speech and the noise are additive and uncorrelated. Cepstral features are used to extract s ...
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https://www.eeworm.com/dl/843559.html 技术资料

LTE网规网优基础知识问答汇总(全集)--华为

1.1 为什么要从3G向LTE演进  问题答复:  LTE(Long Term Evolution)是指3GPP组织推行的蜂窝技术在无线接入方面的最新演进,对应核心网的演进就是SAE(System Architecture Evolution)。之所以需要从3G演进到LTE,是由于近年来移动用户对高速率数据业务的要求,同时新型无线宽带接入系统的快速 ...
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https://www.eeworm.com/dl/654/127624.html 数据结构

清华大学数据结构课上实现的B+树

清华大学数据结构课上实现的B+树,设计一个4阶B+树,包括: (1) 叶子的每个记录应该包括4字节(long)关键码值和60字节的数据字段(存储文件名等,可以自定),设每个叶子可以存储5条记录,而内部节点应该是关键码值/指针对。此外,每个节点还应该有指向同层下一个节点的指针、本节点存储的关键码数等; ...
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https://www.eeworm.com/dl/656/370555.html Java书籍

pstmt = conn.prepareStatement("select ordernumber,datetime,price,dayofmoney from zujie where ordernu

pstmt = conn.prepareStatement("select ordernumber,datetime,price,dayofmoney from zujie where ordernumber= "+ cdName + " ") rs=pstmt.executeQuery() if(rs!=null && rs.next()){ String datetime = rs.getString(2) java.text.SimpleDateFormat formatter = new java.text.SimpleDateF ...
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