TC35i新版西門子工業GSM模塊是一個支持中文短信息的工業級GSM模塊,工作在EGSM900和GSM1800雙頻段,電源范圍為直流3.3～4.8V ,電流消耗——休眠狀態為3.5mA，空閑狀態為25mA，發射狀態為300mA(平均)，2.5A峰值；可傳輸語音和數據信號, 功耗在EGSM900(4類)和GSM1800(1類)分別為2W和1W ,通過接口連接器和天線連接器分別連接SIM卡讀卡器和天線。SIM電壓為3V/1.8V，TC35i的數據接口(CMOS電平)通過AT命令可雙向傳輸指令和數據,可選波特率為300b/s～115kb/s , 自動波特率為1.2kb/s～115kb/s。它支持Text和PDU格式的SMS(Short Message Service,短消息),可通過AT命令或關斷信號實現重啟和故障恢復
上傳時間： 2016-03-17
上傳用戶：a3318966
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
The UCL common multimedia library implements a number of algorithms and protocols needed by a number of our applications. It compiles standalone on a range of Unix systems (Solaris, Linux, Irix, FreeBSD, MacOSX) and on Windows 95/98/NT/XP. The following protocols/algorithms are included in the library: Base64 encoding/decoding Binary tree Random number HMAC authentication MD5 DES RTP MBus SAP
標簽： number algorithms multimedia implements
上傳時間： 2014-11-16
上傳用戶：hoperingcong
書籍：Teach Yourself Visual C++ 6 in 21 Days 第一章的源碼： 所有的源碼都是我邊讀邊寫的，已經通過了VC6得便宜，適合VC6得初學愛好者，希望大家一起學習進步 書的在線地址，第一章： http://poincare.matf.bg.ac.yu/~filip/nm/Seminarski/VC-21days-short/ch01/ch01.htm
標簽： Yourself Visual Teach Days
上傳時間： 2016-04-04
上傳用戶：hjshhyy
書籍：Teach Yourself Visual C++ 6 in 21 Days 第2章的源碼：所有的源碼都是我邊讀邊寫的，已經通過了VC6在WinXP下的編譯，適合VC6得初學愛好者，希望大家一起學習進步 第二章的在線地址： http://poincare.matf.bg.ac.yu/~filip/nm/Seminarski/VC-21days-short/ch02/ch02.htm
標簽： Yourself Visual Teach Days
上傳時間： 2014-01-21
上傳用戶：chenlong
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
// // Histogram Sample // This sample shows how to use the Sample Grabber filter for video image processing. // Conceptual background: // A histogram is just a frequency count of every pixel value in the image. // There are various well-known mathematical operations that you can perform on an image // using histograms, to enhance the image, etc. // Histogram stretch (aka automatic gain control): // Stretches the image histogram to fill the entire range of values. This is a "point operation," // meaning each pixel is scaled to a new value, without examining the neighboring pixels. The // histogram stretch does not actually require you to calculate the full histogram. The scaling factor // is calculated from the minimum and maximum values in the image.
標簽： Sample Histogram Grabber sample
上傳時間： 2013-12-15
上傳用戶：ryb
void III_hufman_decode(struct Granule *gr,int part2_start, int freqline[SBLIMIT][SSLIMIT]) { unsigned int reg1, reg2,i unsigned int part3_length = part2_start + gr->part2_3_length unsigned used int h,*f=&freqline[0][0] if(gr->window_switching_flag && gr->block_type == 2) { /* short block regions */ reg1 = 36 reg2 = 576 } else { /* long block regions */ reg1 = sfBandIndex[fr_ps.header->sampling_frequency].l[gr->region0_count + 1] reg2 = sfBandIndex[fr_ps.header->sampling_frequency].l[gr->region0_count + gr->region1_count + 2] }
標簽： III_hufman_decode int freqline Granule
上傳時間： 2013-12-19
上傳用戶：jjj0202
Data_Structures_and_Algorithms - These notes accompany Data Structures and Algorithms II. The course, to a large extent, follows on from Data Structures and Algorithms I. However, while DS&A I focused on fundamental datastructures, DS&A II will focus on practical algorithms, applicable to a wide range of tasks. The approach will be somewhat less formal, with a little more focus on applications.
標簽： Data_Structures_and_Algorithms Algorithms Structures accompany
上傳時間： 2016-05-08
上傳用戶：阿四AIR
3rd Generation Partnership Project Technical Specification Group Terminals Technical realization of the Short Message Service
標簽： Technical Specification Partnership realization
上傳時間： 2014-01-24
上傳用戶：1966640071
