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[Communication-Mobile] 几种编码方式 DL : 0: A. 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；B. 对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50%，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）；C. 改用HDB3码，画出前20个符号对应的波形；D. 改用密勒码，画出前20个符号对应的波形；E. 分别对上述1000个符号的波形进行功率谱估计，画出功率谱；F. 改变信源“0”的概率，观察AMI码的功率谱变化情况；-have a length of 1,000 random binary sequence, "0" with a probability of 0.8, "a" with a probability of 0.2; B. above zero AMI data coding, and pulse width of symbols width of 50%, waveform sampling rate Symbol rate for the eight times that he painted before the 20 symbols corresponding waveforms (also given before 20 Source sequence); C. HDB3 code switch to depict the former 20 symbols corresponding waveform; D. Miller to switch codes to depict the former 20 symbols corresponding waveform; E. respectively above 1,000 symbols for the power spectrum waveform estimated to depict the power spectrum; F. Change source "0" the probability to observe AMI code changes in the power spectrum;
Date : 2008-10-13 Size : 58.36kb User : 郭慧勤
[Communication-Mobile] kdvp16 DL : 0: KDVoicePhone Toolkit开发工具可以使你的应用程序获得声音和电话方面的特性，如：a.. 打电话或回电话；b.. 如果对话已经在进行，可以中途接听；c.. 在电话线或声卡中回放和记录音频；d.. 从电话线中检测音频信号和脉冲信号；e.. 捕获呼叫方ID；f.. 可控制本机听筒，外部的麦克风和MODEM的外部喇叭；g.. 定时事件来跟踪回放和录音的过程；h.. 录音时可检测静音；-KDVoicePhone Toolkit development tools can make your application access to voice and telephone features, such as: a.. Call or return phone calls b.. If the dialogue already under way, you can receive half-way c.. In a telephone line or sound card in audio playback and recording d.. from the telephone line in the detection of audio signals and pulse signal e.. capture caller ID f.. can control the local handset, external microphones and MODEM external speakers g. . timing incident to track the process of playback and recording h.. recording can detect mute
Date : 2025-12-21 Size : 1.59mb User : 站长
[Communication-Mobile] 几种编码方式 DL : 0: A. 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；B. 对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50%，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）；C. 改用HDB3码，画出前20个符号对应的波形；D. 改用密勒码，画出前20个符号对应的波形；E. 分别对上述1000个符号的波形进行功率谱估计，画出功率谱；F. 改变信源“0”的概率，观察AMI码的功率谱变化情况；-have a length of 1,000 random binary sequence, "0" with a probability of 0.8, "a" with a probability of 0.2; B. above zero AMI data coding, and pulse width of symbols width of 50%, waveform sampling rate Symbol rate for the eight times that he painted before the 20 symbols corresponding waveforms (also given before 20 Source sequence); C. HDB3 code switch to depict the former 20 symbols corresponding waveform; D. Miller to switch codes to depict the former 20 symbols corresponding waveform; E. respectively above 1,000 symbols for the power spectrum waveform estimated to depict the power spectrum; F. Change source "0" the probability to observe AMI code changes in the power spectrum;
Date : 2025-12-21 Size : 58kb User : 郭慧勤
[Communication-Mobile] SPPClient DL : 0: 基于BlueSleil的Sample 查找附近的蓝牙设备确定安装了蓝牙和BlueSleil-BlueSleil based on the search for near Sample Bluetooth equipment installed to determine Bluetooth and B lueSleil
Date : 2025-12-21 Size : 2.24mb User : stingfeng
[Communication-Mobile] John.Wiley.and.Sons.Essentials.of.Error.Control.Co DL : 0: 第1章　用于可靠数字传输和存储的编码第2章　代数引论第3章　线性分组码第4章　重要的线性分组吗第5章　循环码第6章　二进制BCH码第7章　非二进制BCH码、RS码及其译码算法第8章　大数逻辑可译码有限几何码第9章　线性分组码的网络第10章　基于可靠性的线性分组码软判决译码算法第11章　卷积码第12章　卷积码的最优译码第13章　卷积码的次优译码第14章　基于网络的软判决译码算法第15章　级联编码、码分解与多阶段译码第16章　Turbo编码　第17章　低密度单奇偶校验码第18章　网络编码调制第19章　分组编码调制第20章　纠突发错误码第21章　纠突发错误卷积码第22章　自动请求重传（ARQ）策略附录A　伽罗华域的表附录B　GF（2m）中元素的最小多项式附录C　长度至2　10-1的二进制本原BCH码的生成多项式 9.6 卷积码 -Error-controlled coding techniques are used to detect and/or correct errors that occur in the message transmission in a digital communications system. Wireless personal channels used by mobile communications systems and storage systems for digital multimedia data all require the implementation of error control coding methods. Demonstrating the role of coding in communication and data storage system design, this text illustrates the correct use of codes and the selection of the right code parameters. Relevant decoding techniques and their implementation are discussed in detail. Providing communication systems engineers and students with guidance in the application of error-control coding, this book emphasizes the fundamental concepts of coding theory while minimising the use of mathematical tools. * Reader-friendly approach ti coding in communication systems providing examples of encoding and decoding, information theory and criteria for code selection * Thorogh descriptions of releva
Date : 2025-12-21 Size : 2.38mb User : zhao yongqiang
[Communication-Mobile] SIPS04Matlab DL : 0: I. C. Wong, Z. Shen, J. G. Andrews, and B. L. Evans, ``A Low Complexity Algorithm for Proportional Resource Allocation in OFDMA Systems , Proc. IEEE Int. Work. Signal Processing Systems, 针对这篇文章给出的源代码-matlab code for I. C. Wong, Z. Shen, J. G. Andrews, and B. L. Evans, ``A Low Complexity Algorithm for Proportional Resource Allocation in OFDMA Systems , Proc. IEEE Int. Work. Signal Processing
Date : 2025-12-21 Size : 16kb User : hh
[Communication-Mobile] pnsequencegenrator DL : 0: To use this function just define a variable say var, var = pnseq(a, b, c) for a, b and c refer to the zip file-To use this function just define a variable say var, var = pnseq(a, b, c) for a, b and c refer to the zip file
Date : 2025-12-21 Size : 19kb User : Rafal
[Communication-Mobile] irig DL : 0: irig-b 单片机解析 MSP430系列单片机是集成度高、超低功耗的16位单片机。Cyclone系列芯片是Altera公司推出的低价格、RAM可达288 kb的高容量的FPGA。IRIG-B码广泛应用于靶场时间信息的传递和各系统的时间同步。详细介绍了IRIG-B码解码电路和调制电路的硬件设计。MSP430的软件采用C语言编写，使程序有很强的可移植性。-irig-b microcontroller MSP430 Microcontroller analysis are highly integrated, ultra-low-power 16-bit microcontroller. Altera' s Cyclone series of chips are launched in low-cost, RAM up to 288 kb of high-capacity FPGA. IRIG-B time code range is widely used in the transmission of messages and the system time synchronization. Details of the IRIG-B decoding circuit and modulation circuit of the hardware design. MSP430 software using C language, so that programs are highly portable.
Date : 2025-12-21 Size : 11kb User : JEFF
[Communication-Mobile] GPSGSM DL : 0: G P S和G S M 双定位终端的软硬件设计与实现 :随着移动定位技术的发展，单纯的签子G P S 的定位终端或者荃于移动网络的定位终端都将无法浦足用户的俩求。前者的G P S定位信号受地形及建筑物的影晌，会存在定位盲区后者定位精度和定位能力受到移动网络的限制。该文提出一种集成了G P S定位和G S M 网络定位技术的定位终端，阐述了它的软硬件的设计和实现。实验结果表明，该定位终端结合了G P S和G S M网络两种定位方式的优点，-D e s i g n a n d I m p l e me n t a t i o n o f t h e T r a c k i n g T e r mi n a l I n t e g r a t i n g GP S wi t h GS M P o s i t i o n i n g T e c h n o l o g y J I A NG X i r u i , C HE N G Z h e n l i n , F AN G J i n y u n , Z HA NG L i v n g ( I n s t i t u t e o f C o m p u t e T e c h n o l o g y , C h i n e s e A c a d e m y o f S c i e n c e s , B e i j i n g 1 0 0 0 8 0 ) b s t r a c t ] Th e t r a c k i n g t e r mi n a l p l a y s a n i mp o r a n t rl e i n t h e n a v i g a t i o n a n d p o s i t i o n i n g s y s t e m. Ho w t o t h e t r a c k i n g t e r mi n a l i s a k e y p rb l e m t o t h e d e s i g n e r a n d u s e r . T h i s p a p e r p r e s e n t s a me t h o d wh i c h i mpr v e t i n t e g r a t e s p e r f o r m a n c e a n d p r e c i s i o GP S wi 比GS M p o s i t i o n i n g h n o l o g y i n o n e t e r mi n a l , a n d s p e c i f i e s t h e s o f
Date : 2025-12-21 Size : 264kb User : JEFF
[Communication-Mobile] This_one DL : 0: Cooperative communication_power control a) Generate random binary sequence of +1’s and -1’s. (b) Given different Power to the source and the relay as well (c) Multiply the symbols with the channel and then add white Gaussian noise. (d) At any receiver(relay or destination), equalize (divide) the received symbols with the known channel (e) Perform hard-decision-decoding and count the bit errors (f) Plot the power given to both source(Ps) and relay(Pr) with both SNR and BER -Cooperative communication_power control a) Generate random binary sequence of+1’s and-1’s. (b) Given different Power to the source and the relay as well (c) Multiply the symbols with the channel and then add white Gaussian noise. (d) At any receiver(relay or destination), equalize (divide) the received symbols with the known channel (e) Perform hard-decision-decoding and count the bit errors (f) Plot the power given to both source(Ps) and relay(Pr) with both SNR and BER
Date : 2025-12-21 Size : 1kb User : tafa
[Communication-Mobile] MobileStore100305 DL : 0: MobileStore 手机移动商店，手机电子商务，采用windows mobile C#开发，B/S架构，C# HTTP XML等的使用和windows mobile下图像编程示范，以及网络编程和数据库SQL的使用，windows mobile开发者绝对值得拥有-MobileStore mobile phone shops, mobile e-commerce, using windows mobile C# development, B/S architecture, C# HTTP XML, etc., under the use and windows mobile graphics programming model, as well as network programming and the use of SQL database, windows mobile developers definitely worth having
Date : 2025-12-21 Size : 406kb User : wahaha
[Communication-Mobile] VideoMonitorActiveX DL : 1: 这个是C#开发的用于B/S网页插件的视频播放activeX控件。市面上都是基于VC的，我这个市面上绝无仅有。开发时找了N多资料才开发成功。WEB系统发布后，可远程观看视频。怎么在网页里嵌入ActiveX控件就不用我教了吧？google一大堆。把我的程序嵌入一下就行了-This is the C# development for the B/S Web plug-in video player activeX control. Market are based on VC, and my unique market. Development time, only to find the N and more information developed. WEB system release can remotely watch the video. How embed ActiveX controls in the page I would not have taught you? google a lot. Embedded in my program you will do
Date : 2025-12-21 Size : 3.44mb User : 丁刚
[Communication-Mobile] Address-Book DL : 0: 1.软件名称：通讯录V1.0试用版 2.作者：赵权 3.开发工具：Visual C++6.0 4.数据库： Access2000 5.说明： a.本程序在Windows 7 上调试通过。 b.在使用时先用ODBC注册数据源，数据源名：addresslist(名称不可以写错) c.第一次运行时，密码为空。进入系统后可以修改密码。-1. Software Name: Address Book V1.0 Beta 2. Of: the right Zhao 3. Development tools: Visual C++6.0 4. Database: Access2000 5. Note: a. This program is debugged on Windows 7. b. In the first use up the data source with the ODBC Data Source Name: addresslist (name can not be wrong) c. the first run, the password is blank. After entering the system can change the password.
Date : 2025-12-21 Size : 3.81mb User : xiangmao
[Communication-Mobile] OFDM3 DL : 0: 摘要: 该文从OF DM信号的特性出发，采用单一训练帧，将OF DM 系统的载波频率捕获等效为单载波频差估计.该文提出的算法仅使用一帧辅助数据具有较高的精度，较少的计算量和较大的捕获范围、且不受多径信道，时偏及帧同步误差的影响.- Orthogonal Frequency Division Mul tipl e x i n g ( O F D M) , Mu l t i c a r r i e r , C a r r i e r f r e q u e n c y s y n c h r o nizati o n , A c q u i s i t i o n a l g o r i t h m i s p r o p o s e d , w h i c h e mp l o y s o n l y o n e b l o c k o f i d e n t i c a l t i me- d o ma i n t r a i n i n g s y m- b o l s . T h e p r o p o s e d a l g o r i t h m h a s g o o d p r e c i s i o n , l o w c o mp u t a t i o n s a n d l a r g e a c q u i s i t i o n r a n g e . I t i s i n t r i n s i c a l l y r o b u s t t o mu l t i p a t h c h a n n e l a n d t i mi n g e r r o r .
Date : 2025-12-21 Size : 1009kb User : tianyu
[Communication-Mobile] ERLANGB DL : 0: C++界面MFC编程，编写的爱尔兰计算器，可以分别求B,S,和A-Erlang B calculator with C++
Date : 2025-12-21 Size : 18.73mb User : 白露
[Communication-Mobile] MRQOCI347 DL : 0: here i have attached C coding for LDPC decoder div hr div B 文件列表 B ：()
Date : 2025-12-21 Size : 2kb User : Chajning
[Communication-Mobile] cgver DL : 0: Bluetooth Simulation in C# with Serial Ports div hr div B 文件列表 B ： di()
Date : 2025-12-21 Size : 82kb User : iirchlar