ofdm信道特性 Channel transmission simulator Channel transmission simulator ％ ％ inputs: ％ sig2 - noise variance ％ Mt - number of Tx antennas ％ Mr - number of Rx antennas ％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column ％ is the value of the antenna outputs at a single time instance) ％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission ％ N - number of symbols transmitted in OFDM frame ％ ％ outputs: ％ y - vector of channel outputs (matrix for MIMO again, just like x matrix) ％ create noise vector sequence (each row is a different antenna, each column is a ％ different time index) note: noise is spatially and temporally white
標(biāo)簽： transmission simulator Channel inputs
上傳時(shí)間： 2016-07-22
上傳用戶：kelimu
問題描述 設(shè)有n種不同面值的硬幣，各硬幣的面值存于數(shù)組T[1:n]中。現(xiàn)要用這些面值的硬幣來找錢，可以實(shí)用的各種面值的硬幣個(gè)數(shù)不限。當(dāng)只用硬幣面值T[1],T[2],…,T[i]時(shí)，可找出錢數(shù)j的最少硬幣個(gè)數(shù)記為C(i,j)。若只用這些硬幣面值，找不出錢數(shù)j時(shí)，記C(i,j)=∞。 編程任務(wù) 設(shè)計(jì)一個(gè)動(dòng)態(tài)規(guī)劃算法，對(duì)1≤j≤L，計(jì)算出所有的C( n,j )。算法中只允許實(shí)用一個(gè)長(zhǎng)度為L(zhǎng)的數(shù)組。用L和n作為變量來表示算法的計(jì)算時(shí)間復(fù)雜性 數(shù)據(jù)輸入 由文件input.txt提供輸入數(shù)據(jù)。文件的第1行中有1個(gè)正整數(shù)n（n<=13），表示有n種硬幣可選。接下來的一行是每種硬幣的面值。由用戶輸入待找錢數(shù)j。 結(jié)果輸出 程序運(yùn)行結(jié)束時(shí)，將計(jì)算出的所需最少硬幣個(gè)數(shù)輸出到文件output.txt中。
標(biāo)簽：
上傳時(shí)間： 2016-07-28
上傳用戶：yangbo69
AES在AVR單片機(jī)上的實(shí)現(xiàn) 資源要求 Program: 4492 bytes (6.9％ Full) (.text + .data + .bootloader) Data: 745 bytes (9.1％ Full) (.data + .bss + .noinit) 可以在AVR Studio中模擬運(yùn)行 AES加密和解密 在AVR Studio 中模擬運(yùn)行 Ctrl+F7 后，模擬執(zhí)行到main入口處 按F5后, 知道到加密完成 可以看出加密的結(jié)果 再按F10,執(zhí)行解密, 可以看出input數(shù)組恢復(fù)了 原來的結(jié)果
標(biāo)簽： bootloader Program bytes 4492
上傳時(shí)間： 2016-07-30
上傳用戶：363186
對(duì)任意給定的文法G 構(gòu)造LR(1) 項(xiàng)目集規(guī)范族，其中要實(shí)現(xiàn)CLOSURE(I)、GO(I,X)、FIRST 集合等。在此基礎(chǔ)上， 構(gòu)造了LR（1）分析表。然后對(duì)輸入的句子進(jìn)行語法分析，給出接受或出錯(cuò)報(bào)告。 程序采用文件輸入輸出方式。其中包括兩個(gè)輸入文件：文法grammar.txt，以及 輸入串input.txt；兩個(gè)輸出文件：項(xiàng)目集items.txt 和文法的LR(1)分析表 action_table.txt。由于語法分析的結(jié)果只給出接受或錯(cuò)誤報(bào)告，比較簡(jiǎn)
上傳時(shí)間： 2016-07-30
上傳用戶：來茴
基于S3C2440的四線電阻式觸摸屏驅(qū)動(dòng)程序，linux2.6.22內(nèi)核。把touchscreen.c放在driver/input/touchscreen/下。修改arch/arm/mach-s3c2440/mach-smdk2440.c以及相應(yīng)的Makefile加上驅(qū)動(dòng)即可。
標(biāo)簽： S3C2440 四線電阻式 觸摸屏 驅(qū)動(dòng)程序
上傳時(shí)間： 2014-01-14
上傳用戶：zmy123
Advanced UNIX Programming is the long-awaited (19 years!) update to the 1985 original. Maybe "update" isn t the right word--of the 750-or-so pages in the new book, there are maybe two dozen paragraphs that are unchanged. The original covered about 70 system calls, and the new one covers about 300. （這是Advanced UNIX Programming的附書源碼）
標(biāo)簽： update long-awaited Programming the
上傳時(shí)間： 2013-12-19
上傳用戶：xiaoxiang
-- DESCRIPTION : Shift register -- Type : univ -- Width : 4 -- Shift direction: right/left (right active high) -- -- CLK active : high -- CLR active : high -- CLR type : synchronous -- SET active : high -- SET type : synchronous -- LOAD active : high -- CE active : high -- SERIAL input : SI
標(biāo)簽： Shift right DESCRIPTION direction
上傳時(shí)間： 2013-12-02
上傳用戶：gxrui1991
非常好的優(yōu)化算法的書，詳細(xì)介紹了蟻群算法和粒子群算法以及相關(guān)的matlab工具箱，講了理論和應(yīng)用給出了工具箱的下載地址。 Swarm intelligence is an innovative computational way to solve hard problems. In particular, particle swarm optimization, also commonly known as PSO, mimics the behavior of a swarm of insects or a school of fish. If one of the particle discovers a good path to food the rest of the swarm will be able to follow instantly even if they are far away in the swarm. Swarm behavior is modeled by particles in multidimensional space that have two characteristics: a position and a velocity. These particles wander around the hyperspace and remember the best position that they have discovered. They communicate good positions to each other and adjust their own position and velocity based on these good positions.
標(biāo)簽： 優(yōu)化算法
上傳時(shí)間： 2014-01-26
上傳用戶：zgu489
This article introduces how to construct a Hospital Ward Information System with three-tiered technology. The System applies to UML, BDE, MIDAS, distributed compute theory and a special architecture to make such functions: patients check in and check out, prescription input, drug-delivery at center pharmacy and information of patient manage with computer networking.
標(biāo)簽： three-tiered Information introduces construct
上傳時(shí)間： 2016-08-16
上傳用戶：hn891122
This application report presents basic code for initializing and operating the TMS320LF240x DSP devices. Two functionally equivalent example progra ms are presented: one written in assembly language and the other in C language. Detailed discussions of each program are provided that explain numerous compiler and assembler directives, code requirements, and hardware-related requirements. The programs are ready to run on either the TMS320LF2407 Evaluation Module (EVM) or the eZdsp LF2407 development kit. However, they are also intended for use as a code template for any TMS320LF240x (LF240x) or TMS320LF240xA (LF240xA) DSP target system.
標(biāo)簽： initializing application operating presents
上傳時(shí)間： 2013-12-19
上傳用戶：tzl1975
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