根據(jù)有無(wú)固定基礎(chǔ)設(shè)施，無(wú)線局域網(wǎng)又可分為BSS (Basic SERVICE Set)和IBSS (Independent Basic SERVICE Set)。我們要研究的ad hoc網(wǎng)絡(luò)屬于后者。假設(shè)在一個(gè)ad hoc網(wǎng)絡(luò)中，移動(dòng)節(jié)點(diǎn)的發(fā)射功率PTx總是恒定的。要發(fā)送數(shù)據(jù)的移動(dòng)節(jié)點(diǎn)總是先監(jiān)聽(tīng)信道，測(cè)量接收到的信號(hào)功率X，其中X= I + N, I為接收到的干擾，N是噪聲。移動(dòng)節(jié)點(diǎn)只有在X＜INThre時(shí)，才可以發(fā)射。式中，INThre為背景噪聲門限。 在仿真中，我們規(guī)定每個(gè)移動(dòng)節(jié)點(diǎn)的發(fā)射功率是常數(shù)，PTx = 1W；接收節(jié)點(diǎn)接收機(jī)的靈敏度Smin = -80 dBm；信號(hào)質(zhì)量 min = 2 dB；系統(tǒng)的背景噪聲門限INThre = 1.2e-10。
標(biāo)簽：
上傳時(shí)間： 2013-12-19
上傳用戶：頂?shù)弥?/p>
這個(gè)應(yīng)用程序的總體思路其實(shí)很簡(jiǎn)單，就是利用KSoap2和遠(yuǎn)端Web SERVICE交互之后，下載3gp媒體文件流，然后播放。對(duì)RMS記錄存儲(chǔ)的封裝模式以及對(duì)資源的調(diào)用方式，則參照了索愛(ài)公司的BlueGammon游戲代碼。
標(biāo)簽： 應(yīng)用程序
上傳時(shí)間： 2016-03-25
上傳用戶：zhenyushaw
The aim of this book is to provide the reader with a thorough grounding in the General Packet Radio SERVICE – GPRS.The introduction contains a basic review of GSM to ensure that the reader is clear on the main aspects of circuit switched technology, as this will make the differences and advantages of packet oriented GPRS both more apparent and easier to understand.
標(biāo)簽： grounding the thorough General
上傳時(shí)間： 2016-03-30
上傳用戶：康郎
本文從英文C–FAQ (2004 年7 月3 日修訂版) 翻譯而來(lái)。本文的中文版權(quán)為 朱群英和孫云所有。本文的內(nèi)容可以自由用于個(gè)人目的，但是不可以未經(jīng)許可出 版發(fā)行。英文版權(quán)為Steve Summit 所有，詳情見(jiàn)下面的英文版權(quán)說(shuō)明。 The English version of this FAQ list is Copyright 1990-2004 by Steve Summit. Content from the book 《C Programming FAQs: Frequently Asked Questions》is made available here by permission of the author and the publisher as a SERVICE to the community. It is intended to complement the use of the published text and is protected by international copyright laws. The on-line content may be accessed freely for personal use but may not be republished without permission.
上傳時(shí)間： 2013-12-19
上傳用戶：LouieWu
這是一個(gè)網(wǎng)管程序，底層通過(guò)web SERVICE和其他程序通訊，包含了配置、監(jiān)控、統(tǒng)計(jì)、等功能
標(biāo)簽： 程序
上傳時(shí)間： 2014-01-26
上傳用戶：縹緲
Acegi認(rèn)證授權(quán)主要基于兩大技術(shù)，一是Filter機(jī)制，二是AOP的攔截機(jī)制。通過(guò)FilterSecurityInterceptor很好地實(shí)現(xiàn)了對(duì)URI的保護(hù)，通過(guò)MethodSecurityInterceptor實(shí)現(xiàn)了對(duì)SERVICE的方法的攔截保護(hù)，通過(guò)ACL 實(shí)現(xiàn)了對(duì)prototype類型的Object進(jìn)行過(guò)濾和保護(hù)。
上傳時(shí)間： 2013-12-03
上傳用戶：lvzhr
3rd Generation Partnership Project Technical Specification Group Terminals Technical realization of the Short Message SERVICE
標(biāo)簽： Technical Specification Partnership realization
上傳時(shí)間： 2014-01-24
上傳用戶：1966640071
linux下用C語(yǔ)言寫(xiě)的聊天程序！/*BUG and NOTE: Not join protect to Shared Memory Segments,example Semaphore Arrays. Not check the parameters validity. When transmit may be error. If the client program no right exit,others cannot know,the SERVICE program shouldbe check the client program whether exist timing. The program when exit(), it do not delete the Shared Memory Segments,you maybe use atexit() but the program have some processes. When one process is exit(),others is continue. The SERVICE program s action is few. And so on. */
標(biāo)簽： Semaphore Segments example protect
上傳時(shí)間： 2014-01-25
上傳用戶：xhz1993
Hospital queue is a regular met are very familiar with the phenomenon. It every day one way or another in the form in front of us. For example, patients to hospitals, pharmacies dispensing to patients, patients with transfusion to the infusion room, often need wait To some kind of SERVICE.
標(biāo)簽： phenomenon Hospital familiar regular
上傳時(shí)間： 2013-12-26
上傳用戶：四只眼
uddi注冊(cè)中心，可用于web SERVICE 開(kāi)發(fā)。便于查找服務(wù)。
標(biāo)簽： uddi
上傳時(shí)間： 2014-01-02
上傳用戶：zyt
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