這個設計是使用Virtex-4實現DDR的控制器的，設計分為三個主要模塊：Front-End FIFOs,DDR SDRAM Controller和Datapath Module。其中主要是DDR SDRAM Controller,當然還有測試模塊。
上傳時間： 2017-05-20
上傳用戶：llandlu
Playfair Cipher 1.not even the large number of keys in a monoalphabetic cipher provides security 2.one approach to improving security was to encrypt multiple letters 3.the Playfair Cipher is an example 4.invented by Charles Wheatstone in 1854,but named after his friend Baron Playfair Playfair Key Matrix 1.a 5X5 matrix of letters based on a keyword 2.fill in letters of keyword (sans duplicates) 3.fill rest of matrix with other letters Encrypting and Decrypting -plaintext is encrypted two letters at a time 1. if a pair is a repeated letter, insert filler like X’ 2. if both letters fall in the same row, replace each with letter to right (wrapping back to start from end) 3. if both letters fall in the same column, replace each with the letter below it (again wrapping to top from bottom) 4. otherwise each letter is replaced by the letter in the same row and in the column of the other letter of the pair
標簽： monoalphabetic Playfair provides security
上傳時間： 2017-05-25
上傳用戶：變形金剛
The most straightforward approximation is the standard Gaussian approximation, where the MAI is approximated by a Gaussian random variable. This approximation is simple, however it is not accurate in general. In situations where the number of users is not large, the Gaussian approximation is not appropriate. In-depth analysis of must be applied. The Holtzman?s improved Gaussian approximation provides a better approximation to the MAI term. The approximation conditions the interference term on the operation condition of each user.
標簽： approximation straightforward the Gaussian
上傳時間： 2017-06-03
上傳用戶：dyctj
Uma modelagem de um cenario basico para quem esta aprendendo a usar open/gl na plataforma C++. Utilizando comandos basicos como setas direcionais e teclas especiais como home, end, page up e page down voce pode navegar por todo o ambiente 3D com muita facilidade.
標簽： aprendendo plataforma modelagem cenario
上傳時間： 2014-12-19
上傳用戶：ynwbosss
編譯課上做的小程序，用四種分析方法分別實現（LL1,算符優先，遞歸下降，簡單詞法分析） 完成對正則文法所描述的Pascal語言子集單詞符號的詞法分析程序。 <標識符>→字母︱ <標識符>字母︱ <標識符>數字 <無符號整數>→數字︱ <無符號整數>數字 <單字符分界符> →+ ︱－ ︱* ︱ ︱(︱) <雙字符分界符>→<大于>=︱<小于>=︱<小于>>︱<冒號>=︱<斜豎>* <小于>→< <等于>→= <大于>→> <冒號> →: <斜豎> →/ 識別語言的保留字 ：begin end if then else for do while and or not
上傳時間： 2014-06-29
上傳用戶：sjyy1001
Altera® provides various tools for development of hardware and software for embedded systems. This handbook complements the primary documentation for these tools by describing how to most effectively use the tools. It recommends design styles and practices for developing, debugging, and optimizing embedded systems using Altera-provided tools. The handbook introduces concepts to new users of Altera’s embedded solutions, and helps to increase the design efficiency of the experienced user.
標簽： development for provides embedded
上傳時間： 2017-06-15
上傳用戶：haoxiyizhong
C++ C 詞法分析器，編譯原理， 運行時輸入文件（input.txt）路徑，文件內容為{}BEGIN FOR(I=0 I<10 I=I+1){} END
標簽： 分析器
上傳時間： 2013-12-18
上傳用戶：mikesering
Understanding the Linux Kernel helps readers understand how Linux performs best and how it meets the challenge of different environments. The authors introduce each topic by explaining its importance, and show how kernel operations relate to the utilities that are familiar to Unix programmers and users.
標簽： Linux Understanding understand how
上傳時間： 2017-06-17
上傳用戶：ywqaxiwang
Emdros is a text database middleware-layer aimed at storage and retrieval of "text plus information about that text." This information could be linguistic analyses or other annotations. Emdros provides an abstraction of text that makes it well suited to storing /syntactic analyses/ of text, but other linguistic information is supported as well. Emdros comes with a query-language, MQL, that enables powerful queries. Emdros acts as a middleware-layer between a client (not provided) and a database back-end. Currently, PostgreSQL, MySQL, and SQLite (2 and 3) are supported, but other back-ends can easily be added.
標簽： text middleware-layer information retrieval
上傳時間： 2014-01-02
上傳用戶：wfeel
In communication systems channel poses an important role. channels can convolve many different kind of distortions to our information. In perticular wireless channels multipath distortion is sevear. and more sevear is such distortion is random. To handle this, multipath affected channels require Equalizers at receaver end. such equalizer uses different learning Algorithms for identifying channels continuously. This project is VHDL implementation of LMS learning algorithm with pipelined architecture. so this implementation can work with higher data rates with less clock speed requirments and so with less power consumpiton It uses Fixed point arithmatic blocks for filtering so suitable for coustom asic.
標簽： communication important different channels
上傳時間： 2013-12-08
上傳用戶：litianchu
