根據(jù)有無固定基礎設施,無線局域網(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)絡屬于后者。假設在一個ad hoc網(wǎng)絡中,移動節(jié)點的發(fā)射功率PTx總是恒定的。要發(fā)送數(shù)據(jù)的移動節(jié)點總是先監(jiān)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(jié)點只有在X<INThre時,才可以發(fā)射。式中,INThre為背景噪聲門限。 在仿真中,我們規(guī)定每個移動節(jié)點的發(fā)射功率是常數(shù),PTx = 1W;接收節(jié)點接收機的靈敏度Smin = -80 dBm;信號質量 min = 2 dB;系統(tǒng)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?shù)弥?/p>
ead file "YD.DOC". Who is the intended user Beginners in assembly and programmers. Features of the program: Yilmaz Disassembler:is an interactive disassembler which lets the user be a part of the disassembling process,is flexible, the user can disassemble in different formats,has user friendly interface, mouse support, pop-up menu commands, short cut key commands, context-sensitive on-line help,and it is cheap. Program s capacity and limitations: Max executable file size is 64 KB. Can not disassemble program of EXE-format.Only 8086/8088 CPU instructions can be disassembled. Disassemble 8087 Math Co-processor s instructions.
標簽: programmers Beginners Features assembly
上傳時間: 2014-06-21
上傳用戶:皇族傳媒
一種 較新的聚類算法 Dominant-set 的代碼,包括聚類算法的代碼和測試代碼。該算法最大特點 就是基于圖理論的 ,相對于Normalized Cut,計算復雜度低很多,況且能自動決定類的個數(shù)
標簽: Dominant-set 聚類算法 代碼
上傳時間: 2013-12-20
上傳用戶:417313137
動態(tài)規(guī)劃的方程大家都知道,就是 f[i,j]=min{f[i-1,j-1],f[i-1,j],f[i,j-1],f[i,j+1]}+a[i,j] 但是很多人會懷疑這道題的后效性而放棄動規(guī)做法。 本來我還想做Dijkstra,后來變了沒二十行pascal就告訴我數(shù)組越界了……(dist:array[1..1000*1001 div 2]...) 無奈之余看了xj_kidb1的題解,剛開始還覺得有問題,后來豁然開朗…… 反復動規(guī)。上山容易下山難,我們可以從上往下走,最后輸出f[n][1]。 xj_kidb1的一個技巧很重要,每次令f[i][0]=f[i][i],f[i][i+1]=f[i][1](xj_kidb1的題解還寫錯了)
標簽: 動態(tài)規(guī)劃 方程 家
上傳時間: 2014-07-16
上傳用戶:libinxny
This programme is to control DC motor in a certain speed using PWM. The target speed is "r", it is the speed in 1s. The sample rate is 0.1s, so the actual speed target is "rc"=r/10. The "r" and "rc" are integer, and the range of "r" is from 50 to 100. Keep rc=r/10!!! The array "speed1" and "speed2" are the control result, in 0.1s and 1s. The length of "speed1" is 2400, and "speed2" is 240. The "pw" and "nw" are the parameters of PWM. The test will last 4 min.
標簽: speed programme is control
上傳時間: 2014-11-22
上傳用戶:jyycc
此代碼是LDPC碼進行BP算法的重要參考代碼,價值很高!并且可以進行BP的改進算法min-sum BP算法的改進工作!參考的價值不錯
上傳時間: 2014-01-09
上傳用戶:bibirnovis
此代碼是LDPC碼進行BP算法的重要參考代碼,價值很高!并且可以進行BP的改進算法min-sum BP算法的改進工作!參考的價值不錯!!信道的源碼!
上傳時間: 2014-01-10
上傳用戶:luopoguixiong
C++ Footprint and Performance Optimization contains case studies and sample code to give readers concrete examples and proven solutions to problems that don t have cut and paste solutions. The market for miniature computer programming is exploding. C++ Footprint and Performance Optimization supplies programmers the knowledge they need to write code for the increasing number of hand-held devices, wearable computers, and intelligent appliances. This book gives readers valuable knowledge and programming techniques that are not currently part of traditional programming training.
標簽: Optimization Performance Footprint and
上傳時間: 2014-01-06
上傳用戶:杜瑩12345
\F:\uc__os\UCOS代碼\著名嵌入式操作系統(tǒng)uc os-ii全部源代碼\cut\Example_28xSpi_FFDLB.c
標簽: cutExample xSpi_FFDLB osUCOS os-ii
上傳時間: 2014-08-31
上傳用戶:zhliu007
中山大學編譯原理課程的一個實驗,根據(jù)OPP(算符優(yōu)先)做的一個表達式計算器。 內有實驗的設計文檔。 實驗要求支持sin,cos,max,min,power,mod,boolean,?:,等運算。 這個代碼可以為學習編譯原理的同學參考。
上傳時間: 2014-01-27
上傳用戶:PresidentHuang