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4下载:
一个四用户的扩频通信系统,扩频增益为N=16,采用Walsh码进行直接序列扩频,BPSK调制,无线信道为AWGN(加性高斯白噪声信道)信道(AWGN信道:不考虑通信信道信号时,由宽频范围描述的统计随机无线噪声。)。在接收端进行解扩,解调,判决,通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。,A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct
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包括载波跟踪和伪码相位跟踪,用Matlab实现直接序列扩频信号的跟踪程序。-Including pseudo-code tracking and carrier phase tracking using Matlab implementation of direct sequence spread spectrum signal tracking procedures.
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,用MATLAB实现快跳频通信系统的仿真。主要应用了SIMULINK和COMMUNICATION BLOCKETS两个模块。整个设计包括了信源产生部分、发送部分、跳频调制部分、信道部分、接收部分和结果分析部分共六个模块,核心技术是伪随机序列的产生和频率合成器的设计,而关键技术是收发两端的伪随机码元的同步。伪随机码的产生用S-函数编程来开发自己的SIMULINK模块。同步的实现是收发两端采用相同的扩频脉冲触发。而且在设计中每个模块都采用了模块封装技术,从而简化了框图结构-Using MATLAB
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设计一个有干扰的直接序列扩频通信系统, PN码由m序列产生器产生,经过高斯白噪声信道。在接收端接收到的信号包括“有用信号+高斯白噪声+干扰”,将接收信号进行解扩,判决,得到用户的信号检测结果,绘制不同的扩频增益(增益值为10,30,50)下,误比特率随信噪比Eb/N0的变化曲线。-Design of a direct sequence spread spectrum interference system, PN code generated by the m sequence generato
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用matlab来实现扩频通信仿真 很完整的仿真过程-Spread spectrum communication using matlab to achieve a very complete simulation of the process simulation
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DIGITAL WATERMARKING OF AUDIO SIGNALS USING A PSYCHOCOUSTIC AUDITORY MODEL AND SPREAD SPECTRUM THEORY.
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就是qpsk用matlab实现调制解调以及扩频接扩-Is the QPSK modulation and demodulation using matlab to achieve, as well as expanding access spread spectrum
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cdma的扩频通信的matlab的仿真,用程序编写的-cdma spread spectrum communication matlab simulation, using procedures for the preparation of the
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一个四用户的扩频通信系统,扩频增益为N=16,采用Walsh码进行直接序列扩频,BPSK调制,无线信道为AWGN信道。在接收端进行解扩,解调,判决,通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-A four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, AWGN
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设计一个四用户的扩频通信系统,扩频增益为N=16,采用Walsh码进行直接序列扩频,BPSK调制,无线信道为AWGN信道。在接收端进行解扩,解调,判决,通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-Designed a four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modul
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1下载:
二用户CDMA系统,信道为加性高斯信道,使用BPSK调制,15位M序列扩频,可以正确解扩解调。
输出为2用户的基带信号、扩频信号、PSK调制信号、解调信号的时域和频域特性,给出两个用户分别的误码率。 -Second, the user CDMA system, channel for the additive Gaussian channel, using BPSK modulation, 15 M Sequence Spread Spectrum, you can correct demo
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audio watermarking using spread spectrum
test_main
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利用M函数仿真扩频通信系统。6个用户的CDMA的同步通信系统,每个用户利用L=31的Gold码,进行扩频,信道为AWGN信道,接收端利用匹配滤波器进行检测。绘出当N=10000个发射比特下,SNR=0:15(dB)时的误码率曲线。
-M function simulation using Spread Spectrum Communication System. 6 simultaneous users of CDMA communication system, each user of t
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扩频通信中用伪随机码对信息数据进行扩频,实现频谱扩展!-Spread spectrum communication using pseudo-random code spreading of information data to realize the expansion of the spectrum!
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This program deals with Spread spectrum communication systems using chaos as the sequence generators.In coming days I will be updating it with complete chaos based generators Frequency Hopping and CDMA systems with multiple users and till oustic netw
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This m file generates a DS BPSK transmitter(spread spectrum) using PRBS s which are modulus 2 added(exclusive ored)with the message and then used to BPSK modulate a carrier.
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3下载:
利用Matlab生成GPS C/A 码的基带信号。
(1)产生卫星PRN 号码为“5”的一组C/A 码;
(2)循环生成25 页的导航数据,GPS 时间可填入一固定的已知数值;
(3)生成C/A 码扩频信号,每个C/A 码码片给出4 个采样数据;
(4)基带信号采用方波信号,电平为0 和1,占空比为50 %,不加入噪声,进一步生成某个特定的中频信号。-Matlab generated using GPS C/A code base band signal. (1)
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QPSk Modulation using matlab
spread spectrum systems MATLAB source code, wireless spread-spectrum communication system function-QPSk Modulation using matlab
spread spectrum systems MATLAB source code, wireless spread-spectrum communication sys
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This matlab file.this about frequency hoping spread spectrum.. this matlab file describes the spread spectrum technique by using FHSS.. -This is matlab file.this is about frequency hoping spread spectrum.. this matlab file describes the spread spectr
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KASAMI CODE USED FOR SPREAD SPECTRUM COMMUNICATION DESIGNED USING MAT LAB CODE
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