根據有無固定基礎設施,無線局域網又可分為BSS (Basic ServiCE Set)和IBSS (Independent Basic ServiCE Set)。我們要研究的ad hoc網絡屬于后者。假設在一個ad hoc網絡中,移動節點的發射功率PTx總是恒定的。要發送數據的移動節點總是先監聽信道,測量接收到的信號功率X,其中X= I + N, I為接收到的干擾,N是噪聲。移動節點只有在X<INThre時,才可以發射。式中,INThre為背景噪聲門限。 在仿真中,我們規定每個移動節點的發射功率是常數,PTx = 1W;接收節點接收機的靈敏度Smin = -80 dBm;信號質量 min = 2 dB;系統的背景噪聲門限INThre = 1.2e-10。
標簽:
上傳時間: 2013-12-19
上傳用戶:頂得柱
這個應用程序的總體思路其實很簡單,就是利用KSoap2和遠端Web ServiCE交互之后,下載3gp媒體文件流,然后播放。對RMS記錄存儲的封裝模式以及對資源的調用方式,則參照了索愛公司的BlueGammon游戲代碼。
標簽: 應用程序
上傳時間: 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.
標簽: grounding the thorough General
上傳時間: 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。本文的中文版權為 朱群英和孫云所有。本文的內容可以自由用于個人目的,但是不可以未經許可出 版發行。英文版權為Steve Summit 所有,詳情見下面的英文版權說明。 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.
上傳時間: 2013-12-19
上傳用戶:LouieWu
這是一個網管程序,底層通過web ServiCE和其他程序通訊,包含了配置、監控、統計、等功能
標簽: 程序
上傳時間: 2014-01-26
上傳用戶:縹緲
Acegi認證授權主要基于兩大技術,一是Filter機制,二是AOP的攔截機制。通過FilterSecurityInterceptor很好地實現了對URI的保護,通過MethodSecurityInterceptor實現了對ServiCE的方法的攔截保護,通過ACL 實現了對prototype類型的Object進行過濾和保護。
上傳時間: 2013-12-03
上傳用戶:lvzhr
3rd Generation Partnership Project Technical Specification Group Terminals Technical realization of the Short Message ServiCE
標簽: Technical Specification Partnership realization
上傳時間: 2014-01-24
上傳用戶:1966640071
linux下用C語言寫的聊天程序!/*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. */
標簽: Semaphore Segments example protect
上傳時間: 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.
標簽: phenomenon Hospital familiar regular
上傳時間: 2013-12-26
上傳用戶:四只眼
uddi注冊中心,可用于web ServiCE 開發。便于查找服務。
標簽: uddi
上傳時間: 2014-01-02
上傳用戶:zyt