Carrier-phase synchronization can be approached in a general manner by estimating the multiplicative distortion (MD) to which a baseband received signal in an RF or coherent optical transmission system is subjected. This paper presents a unified modeling and estimation of the MD in finite-alphabet digital communication systems. A simple form of MD is the camer phase exp GO) which has to be estimated and compensated for in a coherent receiver. A more general case with fading must, however, allow for amplitude as well as phase variations of the MD. We assume a state-variable model for the MD and generally obtain a nonlinear estimation problem with additional randomly-varying system parameters such as received signal power, frequency offset, and Doppler spread. An extended Kalman filter is then applied as a near-optimal solution to the adaptive MD and channel parameter estimation problem. Examples are given to show the use and some advantages of this scheme.
標(biāo)簽： synchronization Carrier-phase multiplicativ approached
上傳時(shí)間： 2013-11-28
上傳用戶：windwolf2000
Boosting is a meta-learning approach that aims at combining an ensemble of weak classifiers to form a strong classifier. Adaptive Boosting (Adaboost) implements this idea as a greedy search for a linear combination of classifiers by overweighting the examples that are misclassified by each classifier. icsiboost implements Adaboost over stumps (one-level decision trees) on discrete and continuous attributes (words and real values). See http://en.wikipedia.org/wiki/AdaBoost and the papers by Y. Freund and R. Schapire for more details [1]. This approach is one of most efficient and simple to combine continuous and nominal values. Our implementation is aimed at allowing training from millions of examples by hundreds of features in a reasonable time/memory.
標(biāo)簽： meta-learning classifiers combining Boosting
上傳時(shí)間： 2016-01-30
上傳用戶：songnanhua
DirectX not only provides fast access to the hardware and therefore incredibly speedy performance, but it also makes it much easier for hardware developers to produce new devices that work well in the Windows environment. The DirectX APIs take away the necessity of writing your own low-level, device-specific code to access hardware such as the display adapter and network card, making it much easier for you to write programs that take full advantage of the computer s multimedia capabilities.
標(biāo)簽： performance incredibly therefore hardware
上傳時(shí)間： 2016-02-16
上傳用戶：秦莞爾w
Generate 100 samples of a zero-mean white noise sequence with variance , by using a uniform random number generator. a Compute the autocorrelation of for . b Compute the periodogram estimate and plot it. c Generate 10 different realizations of , and compute the corresponding sample autocorrelation sequences , and . Compute the average autocorrelation sequence as and the corresponding periodogram for . d Compute and plot the average periodogram using the Bartlett method. e Comment on the results in parts (a) through (d).
標(biāo)簽： zero-mean Generate sequence variance
上傳時(shí)間： 2016-03-04
上傳用戶：朗朗乾坤
This document represents the first stage in a process of taking the National Strategy for Police Information Systems (NSPIS) forward. It defines the mechanisms to ensure that we (and our partners) have access to the right information, in the right form, in the right time at an appropriate cost. The Strategy will ensure the Police Service has a collective understanding of the value of information and that we are able to exploit National Information Assets in support of local policing.
標(biāo)簽： represents the National Strategy
上傳時(shí)間： 2016-03-08
上傳用戶：wangdean1101
Atheros無線芯片AR-6000系列wince 6驅(qū)動(dòng)源代碼(這東西我也沒用過別問我,我是搜別的wince資源搜到的) AR6K SDIO support. Requires firmware 1.1 on SD13 cards. readme: Atheros Communications AR6001 WLAN Driver for SDIO installation Read Me March 26,2007 (based on k14 fw1.1) Windows CE Embedded CE 6.0 driver installation. 1. Unzip the installation file onto your system (called installation directory below) 2. Create an OS design or open an existing OS design in Platform Builder 6.0. a. The OS must support the SD bus driver and have an SD Host Controller driver (add these from Catalog Items). b. Run image size should be set to allow greater than 32MB. 3. a. From the Project menu select Add Existing Subproject... b. select AR6K_DRV.pbxml c. select open This should create a subproject within your OS Design project for the AR6K_DRV driver. 4. Build the solution. 轉(zhuǎn)自Tony嵌入式,原文地址：http://www.cevx.com/bbs/dispbbs.asp?boardID=4&ID=11762&page=1
標(biāo)簽： wince Requires firmware Atheros
上傳時(shí)間： 2014-11-11
上傳用戶：bibirnovis
1) Write a function reverse(A) which takes a matrix A of arbitrary dimensions as input and returns a matrix B consisting of the columns of A in reverse order. Thus for example, if A = 1 2 3 then B = 3 2 1 4 5 6 6 5 4 7 8 9 9 8 7 Write a main program to call reverse(A) for the matrix A = magic(5). Print to the screen both A and reverse(A). 2) Write a program which accepts an input k from the keyboard, and which prints out the smallest fibonacci number that is at least as large as k. The program should also print out its position in the fibonacci sequence. Here is a sample of input and output: Enter k>0: 100 144 is the smallest fibonacci number greater than or equal to 100. It is the 12th fibonacci number.
標(biāo)簽： dimensions arbitrary function reverse
上傳時(shí)間： 2016-04-16
上傳用戶：waitingfy
The neuro-fuzzy software for identification and data analysis has been implemented in the MATLAB language ver. 4.2. The software trains a fuzzy architecture, inspired to Takagi-Sugeno approach, on the basis of a training set of N (single) output-(multi) input samples. The returned model has the form 1) if input1 is A11 and input 2 is A12 then output =f1(input1,input2) 2) if input1 is A21 and input 2 is A22 then output =f2(input1,input2) 看不懂，據(jù)高手說，非常有用。
標(biāo)簽： identification neuro-fuzzy implemented analysis
上傳時(shí)間： 2014-01-12
上傳用戶：zgu489
對(duì)PL0原編譯器進(jìn)行了以下的擴(kuò)充：1.增加以下保留字else(elsesym), for(forsym),to(tosym),downto(downtosym),return(returnsym),[(lmparen),](rmparen) 2.增加了以下的運(yùn)算符：+=(eplus),-=(eminus),++(dplus),--(dminus) 取址運(yùn)算符&(radsym),指向運(yùn)算符@(padsym) 3.修改單詞：修改不等號(hào)#為<> 4.擴(kuò)充語(yǔ)句：(1)增加了else子句 (2)增加了for語(yǔ)句 5.增加運(yùn)算：(1).++運(yùn)算 (2).--運(yùn)算；(3).+=運(yùn)算 (4).-=運(yùn)算；(5).&取址運(yùn)算； (6).@指向運(yùn)算； 6.增加類型：(1).增加多維數(shù)組a[i1][i2][i3]……[i(n-1)][i(n-2)][in] (2).增加指針類型(任何變量都能存放指針，但不支持指針的指針，如b:=@@a應(yīng)該改寫為c:=@a,b:=@c) 7.將過程procedure擴(kuò)展為函數(shù)：(1).允許定義過程時(shí)在其后加參數(shù)(var a, var b,……..,var n) (2)允許通過指針向函數(shù)形式參數(shù)傳地址；(3)允許返回值；可以用 a:=p(a,b,c….,n) 返回
標(biāo)簽： downtosym returnsym elsesym downto
上傳時(shí)間： 2016-07-02
上傳用戶：saharawalker
Atheros Communications AR6001 WLAN Driver for SDIO installation Read Me March 26,2007 (based on k14 fw1.1) Windows CE Embedded CE 6.0 driver installation. 1. Unzip the installation file onto your system (called installation directory below) 2. Create an OS design or open an existing OS design in Platform Builder 6.0. a. The OS must support the SD bus driver and have an SD Host Controller driver (add these from Catalog Items). b. Run image size should be set to allow greater than 32MB. 3. a. From the Project menu select Add Existing Subproject... b. select AR6K_DRV.pbxml c. select open This should create a subproject within your OS Design project for the AR6K_DRV driver. 4. Build the solution.
標(biāo)簽： Communications installation Atheros Driver
上傳時(shí)間： 2016-10-27
上傳用戶：hebmuljb
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