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This project aim was to build wireless software modem for data communication between two computers using an acoustic interface in the voice frequency range (20Hz– 20,000Hz). The transmitting antenna is a speaker (frequency response of: 90Hz – 20,000Hz) and the receiving antenna is a microphone (frequency response of: 100Hz – 16,000Hz). The test files used as information files were text files. This goal was attained both in an incoherent scheme and in a coherent scheme. Build under Matlab code, our modem uses OFDM (orthogonal frequency division multiplexing) modulation, synchronization by LMS sequence, channel estimation (no equalizer) via pilot tones. The symbols are either PSK or ASK for a constellation size of 2 or 4. To optimize the probability of error, these symbols were mapped using Gray mapping. Report
標簽： communication computers software wireless
上傳時間： 2014-05-29
上傳用戶：wangdean1101
In recent years, the UNIX operating system has seen a huge boost in its popularity, especially with the emergence of Linux. For programmers and users of UNIX, this comes as no surprise: UNIX was designed to provide an environment that s powerful yet easy to use. One of the main strengths of UNIX is that it comes with a large collection of standard programs. These programs perform a wide variety of tasks from listing your files to reading email. Unlike other operating systems, one of the key features of UNIX is that these programs can be combined to perform complicated tasks and solve your problems. One of the most powerful standard programs available in UNIX is the shell. The shell is a program that provides you with a consistent and easy-to-use environment for executing programs in UNIX. If you have ever used a UNIX system, you have interacted with the shell.
標簽： especially popularity operating recent
上傳時間： 2014-11-26
上傳用戶：gaojiao1999
法國cromda編寫的新版本MATRICE 2（矩陣和矢量運算單元）。 // ---------------------------------------------------------- // 12-01-02 : MODIFIED Matrice to Matrice2 (Delphi 6) // All routines now operate on rectangular matrix, except (InvMat and SysLin) // No more need to use the InitMat procedure (suppressed) : // - the routines detect automaticaly the dimensions of matrix and vector // - error code MatDimNul is generated if zero lines or column in matrix and vector (See DimensionMatrice and DimensionVecteur) // - error code MatMauvDim is generated if the dimensions of matrix/vector don t allow valid result // - // The result matrix is dimensioned automaticaly
上傳時間： 2014-01-23
上傳用戶：sy_jiadeyi
Intro/: Directory containing introductory examples. HelloWorld.c A simple program that draws a box and writes "Hello World" in HelloWorld.f it. data The data file for the introductory progressive example. Lines.c Reads the data from file "data" and plots just the curve with Lines.f no labels, viewport or anything indicating quantity or units. Viewport.c Restricts the graph to a viewport and frames the viewport, Viewport.f leaving the remainder of the area for labels, etc. CharLbls.c Adds labels for the chart title, X-axis title, and Y-axis CharLbls.f title. Tics.c Adds tic marks to the viewport edges, but since clipping was Tics.f not set correctly, tics extend outside the viewport. Clip.c Sets clipping such that tic marks are clipped at the viewport Clip.f boundaries. TicLabels.c Adds numeric tic labels to the graph this is the final TicLabels.f installment of the progressive example.
標簽： introductory HelloWorld containing Directory
上傳時間： 2016-03-29
上傳用戶：exxxds
H.S.Park, D-S.Kim, and W.H.Kwon "A Scheduling Method for Network-based Control Systems", IEEE Transaction on Control System Technology, Vol.10, No.3, pp. 318-330, May, 2002 (Simulation Example 1- Matlab Code)
標簽： Network-based Scheduling Control Systems
上傳時間： 2014-01-20
上傳用戶：cainaifa
Problem F:汽車加油 Time Limit:1000MS Memory Limit:65536K Total Submit:1400 Accepted:404 Language: not limited Description 一輛汽車加滿油后可行駛n公里。旅途中有若干個加油站。設計一個有效算法，指出應在哪些加油站停靠加油，使沿途加油次數(shù)最少。 編程任務： 對于給定的n和k(k <= 10000)個加油站位置，編程計算最少加油次數(shù)。 Input 第一行有2 個正整數(shù)n和k，表示汽車加滿油后可行駛n公里，且旅途中有k個加油站。接下來的1 行中，有k+1 個整數(shù)，表示第k個加油站與第 k-1 個加油站之間的距離。第0 個加油站表示出發(fā)地，汽車已加滿油。第k+1 個加油站表示目的地。 Output 輸出最少加油次數(shù)。如果無法到達目的地，則輸出”No Solution”。 Sample Input 7 7 1 2 3 4 5 1 6 6 Sample Output 4
標簽： Limit Accepted Language Problem
上傳時間： 2016-04-12
上傳用戶：youth25
This example demonstrates how the C8051F06x SMBus interface can communicate // with a 256 byte I2C Serial EEPROM (Microchip 24LC02B). // - Interrupt-driven SMBus implementation // - Only master states defined (no slave or arbitration) // - Timer4 used by SMBus for SCL low timeout detection // - SCL frequency defined by <SMB_FREQUENCY> constant
標簽： demonstrates communicate C8051F06x interface
上傳時間： 2016-04-12
上傳用戶：hanli8870
QUGR57KZZQXL530VXN2DANZQBJZGCGO6TW9JSWGUBUPN04SCX7UWNV34SCKPZNMBZOJWG1QRBA4X 42GWSVWJX8HWU6ZB6276OAM1VRKL5XR3TKID0A0ZEHGX5KRH4VE2KODDFIPCEA4X2VRQ0MLX55I5 1H3A40QYJBUT2QYEPP1M0YYDCKZLFBW5W5XAEXCP1WNMFOSKVDT5TSIB1E0U# Feature: EWAVR-CPP Version: 2.25_WIN standalone license (dongled) (no:1000-124-127-2755)
標簽： SCKPZNMBZOJWG DANZQBJZGCGO JSWGUBUPN GWSVWJX8
上傳時間： 2016-04-13
上傳用戶：kiklkook
偽隨機數(shù)生成器，Implementation of the Quasi-Random Number generator currently hardwired to no more than 52 dimensions
上傳時間： 2013-12-20
上傳用戶：teddysha
A new PLL topology and a new simplified linear model are presented. The new fractional-N synthesizer presents no reference spurs and lowers the overall phase noise, thanks to the presence of a SampleJHold block. With a new simulation methodology it is possible to perform very accurate simulations, whose results match closely those obtained with the linear PLL model developed.
標簽： new fractional-N synthesizer simplified
上傳時間： 2016-04-14
上傳用戶：hjshhyy
