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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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用matlab软件仿真了从卷积码编码，QPSK调制，AWGN信道，QPSK解调，以及Viterbi译码。-Using Matlab Simulate from the coding of convolutional code，Qpsk modulation ，AWGN channel ，Qpsk demodulation and Viterbi decoding。
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qpsk调制完整matlab代码，很受用-matlab code modulation qpsk integrity, popular with
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BPSK,QPSK等多个调制方式的详细说明及matlab代码-BPSK, QPSK modulation and other detailed instructions and matlab code
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本程序是对V-BLAST系统及其检测算法的仿真，可采用BPSK,QPSK,16QAM,64QAM调制。检测算法为ML，MMSE,ZF,以及采用迫零的连续干扰消除检测算法。-This program is a simulation, the V-BLAST system and its detection algorithm can be used for BPSK, QPSK, 16QAM, 64QAM modulation. Detection algorithm for the ML, M
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产生二进制数列码并调制成为qpsk信号,帮助熟悉matlab程序-Generates a binary number column code and modulation QPSK signal to help familiarize yourself with matlab program
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有QPSK的调制解调，信噪比，信道等，使用matlab代码编写和绘图-There QPSK modulation and demodulation, signal to noise ratio, channel, etc., using matlab code writing and drawing
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QPSK的调制解调源码，matlab编程，在高斯噪声的影响下-Under the QPSK modulation and demodulation code, matlab program, the impact of the Gaussian noise
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这个是空时编码组的qpsk代码调制所需要的MATLAB程序，所实现的是qpsk调制-This is qpsk Code Modulation group of space-time coding required MATLAB program, the implementation is qpsk modulation.
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QPSK调制解调matlab 代码，简单易懂，自己写的。-QPSK modulation and demodulation matlab simulation, write your own, and the code is simple and easy to understand.
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这是一个完整的matlab下的扩频通信系统的仿真源代码。包括QPSK调制、m序列生成、载波调制、解调、解扩等操作。非常完整，代码通过调试，可以直接运行。-This is a complete matlab under the spread spectrum communication system simulation source code. Including QPSK modulation, m sequence generation, modulation, demodulation,
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1下载：
matlab环境下的窃听信道建模，包括crc校验编码，三种（QPSK,16QAM,64QAM）不同的调制方式仿真，加入扰码增强抗窃听能力。-Matlab environment eavesdropping channel modeling, including the CRC check code, three kinds of (QPSK, 16 qam and 64 qam) different modulation mode simulation, join the scrambler e
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一种数字调制方式qpsk的调制解调代码，可进行相应参数设置(A digital modulation method qpsk modulation and demodulation code, can be set accordingly)
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