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[Communication-Mobile] OFDMberanalysis DL : 0: OFDM关于BER分析的实例BPSK modulation with BER with and without OFDM Here are the files for a OFDM modulation using a BPSK modulation and showed the decrease in BER with OFDM. -OFDM BER analysis of the examples BPSK modulation with BER w praxiology and without OFDM Here are the files for a OFDM using a modulation BPSK modulation and showed t he decrease in BER with OFDM.
Date : 2008-10-13 Size : 3.78kb User : xuzhi
[Communication-Mobile] PhaseLockedLoop DL : 0: ％The phase locked loop(PLL),adjusts the phase of a local oscillator ％w.r.t the incoming modulated signal.In this way,the phase of the ％incoming signal is locked and the signal is demodulated.This scheme ％is used in PM and FM as well. ％We will implement it by using a closed loop system.Control systems ％techniques are applied here.
Date : 2008-10-13 Size : 2.41kb User : 张勇
[Communication-Mobile] OFDMberanalysis DL : 0: OFDM关于BER分析的实例BPSK modulation with BER with and without OFDM Here are the files for a OFDM modulation using a BPSK modulation and showed the decrease in BER with OFDM. -OFDM BER analysis of the examples BPSK modulation with BER w praxiology and without OFDM Here are the files for a OFDM using a modulation BPSK modulation and showed t he decrease in BER with OFDM.
Date : 2025-12-29 Size : 3kb User : xuzhi
[Communication-Mobile] PhaseLockedLoop DL : 0: ％The phase locked loop(PLL),adjusts the phase of a local oscillator ％w.r.t the incoming modulated signal.In this way,the phase of the ％incoming signal is locked and the signal is demodulated.This scheme ％is used in PM and FM as well. ％We will implement it by using a closed loop system.Control systems ％techniques are applied here.- The phase locked loop (PLL), adjusts the phase of a local oscillator wrt the incoming modulated signal.In this way, the phase of the incoming signal is locked and the signal is demodulated.This scheme is used in PM and FM as well. We will implement it by using a closed loop system.Control systems techniques are applied here.
Date : 2025-12-29 Size : 2kb User : 张勇
[Communication-Mobile] W-CDMA DL : 0: 这是一本介绍WCDMA的书籍，很经典，一起分享。-This is an introduction book WCDMA, it is a classic share.
Date : 2025-12-29 Size : 1.53mb User : bill
[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 : 2025-12-29 Size : 264kb User : JEFF
[Communication-Mobile] moip_cl_rxgroup.ps DL : 0: mobile ip Copyright (c) 1993 */ /* by MIL 3, Inc. */ /* (A Delaware Corporation) */ /* 3400 International Drive, N.W. */ /* Washington, D.C., U.S.A. */ /* All Rights Reserved. -mobile ip Copyright (c) 1993 */ /* by MIL 3, Inc. */ /* (A Delaware Corporation) */ /* 3400 International Drive, N.W. */ /* Washington, D.C., U.S.A. */ /* All Rights Reserved.
Date : 2025-12-29 Size : 1kb User : slla
[Communication-Mobile] da2 DL : 0: FIR_A=[1 1 2] FIR_B=[2 1 1] function [w_out mse_out ref_out] = LMS(FIR_A,FIR_B,1,wave=square) [w mse ref res iter] = LMS(FIR_A,FIR_B,L,wave) LMS filter to solve the system identification problem represented below: ---------- ---------- ------- FILTER A -----out_A----- FILTER X ---out-- | ---------- ---------- | in | | ----| |+ | ---------- - ----- ------- FILTER B -----out_B-------------------- SUM ---error--- ---------- ----- FILTER_X is unknown and to be derived. This problem is called "filter matching" and is encountered when one needs to augment a certain filter (A) in order to match the behavior of a reference filter (B).-FIR_A=[1 1 2] FIR_B=[2 1 1] function [w_out mse_out ref_out] = LMS(FIR_A,FIR_B,1,wave=square) [w mse ref res iter] = LMS(FIR_A,FIR_B,L,wave) LMS filter to solve the system identification problem represented below: ---------- ---------- ------- FILTER A -----out_A----- FILTER X ---out-- | ---------- ---------- | in | | ----| |+ | ---------- - ----- ------- FILTER B -----out_B-------------------- SUM ---error--- ---------- ----- FILTER_X is unknown and to be derived. This problem is called "filter matching" and is encountered when one needs to augment a certain filter (A) in order to match the behavior of a reference filter (B).
Date : 2025-12-29 Size : 2kb User : dasu
[Communication-Mobile] couch-modern DL : 0: OFDM Simulation This subdirectory contains MATLAB (trademark of The Math- Works, Inc.) M files for selected equations, figures, and tables in this book that are marked with a computer symbol. For example, Equation (3-16) can be plotted using the file E3_016.M. These *.M files were written by Leon W. Couch, II and Ronald Forrest Smith.-OFDM Simulation This subdirectory contains MATLAB (trademark of The Math- Works, Inc.) M files for selected equations, figures, and tables in this book that are marked with a computer symbol. For example, Equation (3-16) can be plotted using the file E3_016.M. These *.M files were written by Leon W. Couch, II and Ronald Forrest Smith.
Date : 2025-12-29 Size : 28kb User : mrohan
[Communication-Mobile] findoptt DL : 0: function optt = findoptt(L,C,pmax,rP,a,w,maxw) Arguments: L =input( links in the network ) C =input( coordinates of nodes ) pmax =input( max. transmission power ) rP - see rndtopo2d a - fading coefficient (a<-2) Output: optt(i) - optimal blocking distance around destination of L(i), i.e. radius of the circle in which there should be no active nodes when L(i) is active. Description: We try to estimate the optimal blocking distance for the source of each link. For every node we start with a candidate distance t. We then estimate a number of slots N needed for the network as a number of link sources in that circle. We also est- function optt = findoptt(L,C,pmax,rP,a,w,maxw) Arguments: L =input( links in the network ) C =input( coordinates of nodes ) pmax =input( max. transmission power ) rP - see rndtopo2d a - fading coefficient (a<-2) Output: optt(i) - optimal blocking distance around destination of L(i), i.e. radius of the circle in which there should be no active nodes when L(i) is active. Description: We try to estimate the optimal blocking distance for the source of each link. For every node we start with a candidate distance t. We then estimate a number of slots N needed for the network as a number of link sources in that circle. We also est
Date : 2025-12-29 Size : 1kb User : Hemanth
[Communication-Mobile] lms_rsl DL : 0: 利用lms算法和rls算法，对通过给定系统h的随机信号进行自适应滤波，通过抽头w对系统进行逆辨识与辨识，同时产生MSE 即均方误差，来描述对信号恢复的效果。-Using lms algorithm and rls algorithms h through a given system adaptive filtering of random signals, the system through the tap w reverse identification and recognition, while the mean square error MSE generated to describe the effect on signal recovery.
Date : 2025-12-29 Size : 1kb User :
[Communication-Mobile] CFR DL : 1: 峰值抵消算法的基本思想是：在OFDM信号上叠加一个由一系列加权参考函数组成的峰值抵消信号，通过抵消函数的选取以及权值计算，使得抵消信号尽可能消除超过门限的信号幅值。常见的参考函数分为脉冲函数和其他窗函数两类。- T. May, H. Rohling. Reducing the peak-to-average power ratio in OFDM radio transmission systems. IEEE Vehicular Technology Conference (VTC), May 1998, Ottawa Canada, 3: 2474-2478 A. Geert Arnout, van N. Richard D., de W. Arnout Hendrik. Transmission system and method employing peak cancellation to reduce the peak-to-avrage power ratio. US Patent 6175551, Issued on January 16, 2001 S. K. Cha, M. H. Park, S. G. LEE, et al. A new PAPR reduction technique for OFDM systems using advanced peak windowing method. IEEE Trans. Consum. Electron., 2008, 54(2): 405-410 G. G. Chen, R. Ansari, Y. W. Yao. Improved peak windowing for PAPR reduction in OFDM. IEEE Vehicular Technology Conference, Apr. 2009, Barcelona, Spain H. Kuo, S.W. Cheung. Optimization of windowing and peak-windowing techniques for WCDMA systems. IEEE International Conference on Acoustics, Speech and Signal Processing, May 2006, Toulouse France, 4: IV313-IV316 O. Vä ä nä nen, J. Vankka, K. Halonen. Simpl
Date : 2025-12-29 Size : 2.56mb User : daidaohan
[Communication-Mobile] GSM-len-W-CDMA DL : 0: this a another file what i upload. it s document about a new technology nowadays. i think it s so useful for everyone learning telecommunication major.-this is a another file what i upload. it s document about a new technology nowadays. i think it s so useful for everyone learning telecommunication major.
Date : 2025-12-29 Size : 6.75mb User : tommy
[Communication-Mobile] chkprops DL : 0: Code Matlab : This is a .m matlab file that discribe the fonctionnment of CDMA code generation using W-CDMA code generation
Date : 2025-12-29 Size : 1kb User : dimassi
[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 : 2025-12-29 Size : 1009kb User : tianyu
[Communication-Mobile] rate DL : 0: This is aimed at exploring how rate control and adaptation of carrier sense threshold can affect spatial reuse (and hence aggregate throughput) in a multi-hop network. Signal-to-Interference Noise Ratio (SINR) required for successful reception at the receiver depends on the transmission rate being used. The ideal capacity of a channel with bandwidth B is given by Shannon s Equation: W=Blog(1+SINR), yielding SINR(reqd) >= (2^(W/B)-1).
Date : 2025-12-29 Size : 14kb User : asbel
[Communication-Mobile] repoet3-4 DL : 0: Even though the RAND functions can be useful for generating uniform random numbers, most of the time w ill need to model various non-uniform distributions, such as the Normal, Lognormal, Exponential, Gama, and others. In fact, the Uniform distribution arises in a very limited number of applications, so the chances are our worksheet models will rarely deal with this distribution-Even though the RAND functions can be useful for generating uniform random numbers, most of the time we will need to model various non-uniform distributions, such as the Normal, Lognormal, Exponential, Gama, and others. In fact, the Uniform distribution arises in a very limited number of applications, so the chances are our worksheet models will rarely deal with this distribution
Date : 2025-12-29 Size : 97kb User : basem
[Communication-Mobile] y-w-STBC DL : 0: 比较有空时编码的系统和没有空时编码的曲线图的比较，展现空时编码的优点-。-Program to a receiving antenna, for example, a transmitting antenna, respectively, the two transmit antennas, three transmit antennas and four transmit antenna system STBC simulation. Compare the bit error rate performance
Date : 2025-12-29 Size : 1kb User : 许孟虎