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找到约 257 项符合 LONG 的查询结果

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,并加入循环前缀 7. 对信号进行ove ...
https://www.eeworm.com/dl/534/364153.html
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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 engineer almost all my lif ...
https://www.eeworm.com/dl/522340.html
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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;有什么错? short s1 = 1; s ...
https://www.eeworm.com/dl/972271.html
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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 order to solve the pro ...
https://www.eeworm.com/dl/502/29068.html
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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 be generated at time ...
https://www.eeworm.com/dl/633/444481.html
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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 engineers have trie ...
https://www.eeworm.com/dl/522054.html
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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 statistical informati ...
https://www.eeworm.com/dl/522115.html
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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发展,如WiMax的出现, ...
https://www.eeworm.com/dl/843559.html
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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; (2) 此4阶B+树应该支 ...
https://www.eeworm.com/dl/654/127624.html
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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.SimpleDateFormat ("yyyy-MM-dd") ...
https://www.eeworm.com/dl/656/370555.html
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