Location:
Search - FH DS
Search list
Description: MATLAB通信工具箱中的系统仿真,分为用SIMULINK模块框图进行仿真和用MATLAB函数进行的仿真两种。在用SIMULINK模块框图的...扩频通信有直接序列(DS)、跳频(FH-communications toolbox of MATLAB system simulation, categorized SIMULINK block diagram for using MATLAB simulation and the simulation function for both. Using Simulink block diagram of a communication ... Spread Spectrum Direct Sequence (DS), frequency hopping (FH
Platform: |
Size: 3400 |
Author: 黄三 |
Hits:
Description: CPLD在DS—FH混合扩频通信系统中的应用
Platform: |
Size: 120103 |
Author: 江南 |
Hits:
Description: MATLAB通信工具箱中的系统仿真,分为用SIMULINK模块框图进行仿真和用MATLAB函数进行的仿真两种。在用SIMULINK模块框图的...扩频通信有直接序列(DS)、跳频(FH-communications toolbox of MATLAB system simulation, categorized SIMULINK block diagram for using MATLAB simulation and the simulation function for both. Using Simulink block diagram of a communication ... Spread Spectrum Direct Sequence (DS), frequency hopping (FH
Platform: |
Size: 3072 |
Author: 黄三 |
Hits:
Description: CPLD在DS—FH混合扩频通信系统中的应用-CPLD in hybrid DS-FH Spread Spectrum Communication System
Platform: |
Size: 119808 |
Author: 江南 |
Hits:
Description: ds证据理论的事例，用于数据融合判决，附说明和参考文献-ds examples of evidence theory for data fusion decision, with notes and references
Platform: |
Size: 70656 |
Author: houjie |
Hits:
Description: DW 256 DUP(?)
STACK1 ENDS
DDATA SEGMENT
MES1 DB The least number is:$
MES2 DB 0AH,0DH, The largest number is:$
NUMB DB 0D9H,07H,8BH,0C5H,0EBH,04H,9DH,0F9H
DDATA ENDS
CODE SEGMENT
ASSUME CS:CODE,DS:DDATA
START: MOV AX,DDATA
MOV DS,AX
MOV SI,OFFSET NUMB
MOV CX,0008H
JCXZ A4
MOV BH,[SI]
MOV BL,BH
A1: LODSB AL=DS:[SI],SI=SI+1
CMP AL,BH
JBE A2
MOV BH,AL
JMP A3
A2: CMP AL,BL
JAE A3
MOV BL,AL
A3: LOOP A1
A4: MOV DX,OFFSET MES1 show mes1
MOV AH,09H
INT 21H
MOV AL,BL show the least number
AND AL,0F0H get the highest 4 bits
SHR AL,4
CMP AL,0AH
JB C2
ADD AL,07H
C2: ADD AL,30H
MOV DL,AL show character
MOV AH,02H
INT 21H
MOV AL,BL
AND AL,0FH get the lowest 4 bits
CMP AL,0AH
JB C3
ADD AL,07H
C3: ADD AL,30H
MOV DL,AL show character
MOV AH,02H
INT 21H
MOV DX,OFFSET MES2 show mes2
MOV AH,09H
INT 21H -DW 256 DUP (?) STACK1 ENDSDDATA SEGMENTMES1 DB The least number is: $ MES2 DB 0AH, 0DH, The largest number is: $ NUMB DB 0D9H, 07H, 8BH, 0C5H, 0EBH, 04H, 9DH, 0F9HDDATA ENDSCODE SEGMENT ASSUME CS: CODE, DS: DDATASTART: MOV AX, DDATA MOV DS, AX MOV SI, OFFSET NUMB MOV CX, 0008H JCXZ A4 MOV BH, [SI] MOV BL, BHA1: LODSB AL = DS: [SI], SI = SI+ 1 CMP AL, BH JBE A2 MOV BH, AL JMP A3A2: CMP AL, BL JAE A3 MOV BL, ALA3: LOOP A1A4: MOV DX, OFFSET MES1 show mes1 MOV AH, 09H INT 21H MOV AL, BL show the least number AND AL , 0F0H get the highest 4 bits SHR AL, 4 CMP AL, 0AH JB C2 ADD AL, 07H C2: ADD AL, 30H MOV DL, AL show character MOV AH, 02H INT 21H MOV AL, BL AND AL, 0FH get the lowest 4 bits CMP AL, 0AH JB C3 ADD AL, 07HC3: ADD AL, 30H MOV DL, AL show character MOV AH, 02H INT 21H MOV DX, OFFSET MES2 show mes2 MOV AH, 09H INT 21H
Platform: |
Size: 1024 |
Author: 张于 |
Hits:
Description: SPREAD SPECTRUM MODULATION TECHNIQUES
-spread spectrum - those modulation methods that are producing a signal whose
spectrum is more wider than of the data signal, the occupied frequency band being
independent by the signal of data band.
-The signals with spread spectrum of direct sequence type BPSK (BPSK-DS-SS)
-The signals with spread spectrum of direct sequence type QPSK – DS–SS
- Frequency hopping spread spectrum signals (FH-SS)-SPREAD SPECTRUM MODULATION TECHNIQUES
-spread spectrum- those modulation methods that are producing a signal whose
spectrum is more wider than of the data signal, the occupied frequency band being
independent by the signal of data band.
-The signals with spread spectrum of direct sequence type BPSK (BPSK-DS-SS)
-The signals with spread spectrum of direct sequence type QPSK – DS–SS
- Frequency hopping spread spectrum signals (FH-SS)
Platform: |
Size: 141312 |
Author: megr3z |
Hits:
Description: Hybrid DS-FH communication systems
Platform: |
Size: 32768 |
Author: JIN MINGSONG |
Hits:
Description: 本文阐述了扩展频谱通信技术的理论基础和实现方法，利用MATLAB 提供的可视化
工具Simulink 建立了扩频通信系统仿真模型，详细讲述了各模块的设计，并指出了仿真建模
中要注意的问题。在给定仿真条件下，运行了仿真程序，得到了预期的仿真结果。同时，利
用建立的仿真系统，研究了扩频增益与输出端信噪比的关系，结果表明，在相同误码率下，
增大扩频增益，可以提高系统输出端的信噪比，从而提高通信系统的抗干扰能力。 -This paper describes the theory of spread-spectrum communication technology and implementation methods based on the use of visualization tools provided by MATLAB Simulink to establish a spread spectrum communication system simulation model, described in detail the design of each module, and pointed out that the simulation modeling to note problem. In the given simulation conditions, running a simulation program to obtain the desired simulation results. Meanwhile, the use of the simulation system to study the spreading gain and the relationship between the output signal to noise ratio, results show that the same bit error rate, increased spreading gain can increase the system output signal to noise ratio, thereby enhancing communication system disturbance.
Platform: |
Size: 2048 |
Author: clinfeng |
Hits:
Description: 本文件包含了两个直扩和跳频的例子，用MATLAB语言实现，而且还包括例子的原文及大量注释，十分详细-This document contains two examples of DS and FH, with the MATLAB language, but also examples of the original and a lot of notes, very detailed
Platform: |
Size: 26624 |
Author: wujian |
Hits:
Description: CDMA编码的代码,跳频扩频的代码以及直接序列扩频的代码，以供参考-CDMA coding ,FH Spread spectrum and DS Spread spectrum
Platform: |
Size: 7168 |
Author: 严季 |
Hits:
Description: CDMA编码的代码,跳频扩频的代码以及直接序列扩频的代码，以及GOLD码产生-CDMA coding ,FH Spread spectrum and DS Spread spectrum
Platform: |
Size: 29696 |
Author: 严季 |
Hits:
Description: 直扩与跳频的调制解调过程在CDMA的具体实现-DS and FH CDMA modulation and demodulation process in a concrete realization
Platform: |
Size: 3072 |
Author: 王伟 |
Hits:
Description: 为了进一步提高直接序列／跳频（ＤＳ／ＦＨ）扩频系统的抗干扰能力，基于小波包变换结合递归最小二乘算法设计
了一种变换域自适应干扰抑制算法，该算法采用小波包分解定位窄带干扰，递归最小二乘算法抑制窄带干扰。通过蒙特卡
罗仿真分析在增加抗干扰模块后，ＤＳ／ＦＨ系统工作在准静态时，在不同信噪比条件下抗窄带干扰性能。仿真结果表明：该
算法具有较强的自适应性以及抗窄带干扰能力，其性能优于传统的直接置零法，适用于多音干扰下的恶劣通信环境。-In order to further improve the anti-jamming capability of direct sequence/frequency-hopping spread spectrum system (DS/FH), based on wavelet packet transform combined with recursive least squares algorithm design a transform domain adaptive interference suppression algorithm, the algorithm uses wavelet packet decomposition positioning narrowband interference, narrowband interference suppression recursive least squares algorithm. By Monte Carlo simulation analysis to increase the anti-jamming module DS/FH system work in the quasi-static, in different SNR anti narrowband interference performance. Simulation results show that: the algorithm has strong adaptability and resistance to narrowband interference ability, its performance is superior to the traditional method of direct zero, poor communication environment suitable for multi-tone interference.
Platform: |
Size: 301056 |
Author: dm |
Hits:
Description: 进行直接序列扩频/跳频信号（DS-FH）的简单生成过程仿真-Direct sequence spread spectrum/frequency hopping signal (DS-FH) generates a simple process simulation
Platform: |
Size: 1024 |
Author: 空空小师f |
Hits:
Description: 混合扩频DS/FH仿真程序，从原始信号通过伪随机码，跳频码转变为混合扩频信号，再依次解跳解扩，最后通过低通滤波器恢复出信号。-Hybrid spread spectrum DS/FH simulation program, from the original signal by pseudo random code, frequency hopping code into a hybrid spread spectrum signal, and then hopping despreading, finally through a low-pass filter to recover the signal.
Platform: |
Size: 1024 |
Author: 刘波 |
Hits:
Description: 非常经典的直扩/跳频 matlab-simulink链路，有助于理解跳频通信。需要Matlab2013打开。-Very classic DS/FH matlab-simulink link, help to understand the frequency hopping communications. Need Matlab2013 open.
Platform: |
Size: 25600 |
Author: yuling |
Hits: