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2下载:
北邮通信仿真教程第10章的源程序,教程网上可以搜到,程序包括BPSK,QPSK的调制解调,载波同步,误比特率的计算等。-Beijing University of Posts and Telecommunications Communication Simulation Guide to Chapter 10 of the source, the Guide can be found online that included BPSK, QPSK modulation and demodulat
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这个程序除了接收机同步、信道编码没有加入外,基本上反映了一个OFDM系统的特性:
1. qpsk/16qam/64qam映射、解映射
2. OFDM调制解调(循环前缀,FFT等)
3. 非整数采样时刻多径时延的多径信道
4. Rayleigh或者Rician多径信道
5. 信道的连续时变(非block fading)
6. 线性插值信道估计
7. FFT变换域插值信道估计-In addition to this program receiver synchroniza
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QPSK symbol synchronization
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使用QPSK调制方式的简单的通信系统,包含载波同步位同步等模块-a simple communication system, using QPSK modulation, including bit synchronization and carrier synchronization
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Altem公司quartus
II 8.1开发环境下,完成了中频全数字解调器的FPGA实现,并对数
字下变频、载波同步、位同步等解调器的核心模块设计进行了详细的分析和说明,给出
了实现框图和仿真波形。同时在本设计中应用了Altera公司的NiosII软核处理器技术,
用于载波的大频偏校正和解调器各个部分的监测和控制。最后给出了QPSK中频全数字
解调器关键性能指标的测试方法和测试结果,测试结果表明本设计达到了预期的性能指
标要求。-The Algorithm is con
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基于QPSK的位定时同步的gardner算法
Matlab-Of QPSK-based timing synchronization the gardner algorithm of
Matlab
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基于QPSK的位定时同步的MATLAB算法-Of QPSK-based timing synchronization the gardner algorithm of
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matlab实现ofdm完整系统,包括括qpsk调制,串并变换,ifft,同步等
-the matlab ofdm complete system, including qpsk modulation, string and transform, ifft, synchronization
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根据软件无线电的思想,提出了一种新颖的数字信号处理算法,对QPSK信号的相位进行数字化处理,从而实现对QPSK信号的解调.该算法允许收发两端载波存在频差,用数字锁相实现收发端载波的同步,在频偏较大的情况下,估算频偏的大小,自适应设置环路的带宽,实现较短的捕获时间和较好的信噪性能。整个设计基于XILINX公司的ISE开发平台,并用Virtex-II系列FPGA实现。用FPGA实现调制解调器具有体积小、功耗低、集成度高、可软件升级、扰干扰能力强的特点,符合未来通信技术发展的方向。-According
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本程序是锁相环的仿真程序,具有接收端载波同步的功能。注释详尽,程序规范。发端的调制方式有单载波调制,BPSK调制,QPSK调制可供选择。程序中有星座图,锁相环的频差、相差图,以及解调后的基带波形。-This program is a phase-locked loop simulation program, the with carrier synchronization receiving end function. Notes detailed program specifications.
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QPSK载波同步的实现程序,每一步有对应波形。-QPSK carrier synchronization procedures, every step of the corresponding waveform.
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在matlab中利用平方环实现QPSK信号的码元同步,可实现,效果较好。-Square ring QPSK signal symbol synchronization can be achieved in matlab better.
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This model shows the implementation of a QPSK transmitter and receiver. The receiver addresses practical issues in wireless communications, e.g. carrier frequency and phase offset, timing offset and frame synchronization. The receiver demodulates the
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QPSK调制解调,载波同步的matlab源程序,测试通过无bug-QPSK modulation and demodulation, carrier synchronization matlab source code, test bug-
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信号处理设计,包括下变频,抽取滤波,同步,均衡等模块,对加扰QPSK信号进行解调设计。-Signal processing design, including down-conversion, decimation filtering, synchronization, equalization module, scrambled QPSK signal is demodulated design.
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QPSK调制后进行载波同步,对频偏进行修正,锁定频率。最后误差波形收敛-After QPSK modulation carrier synchronization, frequency offset correction, locking frequency. The last error waveform convergence
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BPSK/QPSK调制载波同步源代码,采用科斯塔斯(COSTAS)环算法,经过验证,稳定可靠。-BPSK/QPSK modulated carrier synchronization source code, using the Kostas (COSTAS) ring algorithm, after verification, stable and reliable.
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FPGA实现发送接收全过程,包括QPSK调制、载波同步-FPGA to achieve the whole process of transmission and reception, including QPSK modulation, carrier synchronization
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次工程包含QPSK的所有东西,包括各种同步和编码,十分强大(The sub project contains all the things of QPSK, including all kinds of synchronization and coding, very powerful.)
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QPSK定时同步代码,采用Gardner定时同步算法,Farrow插值算法(QPSK timing synchronization code, using Gardner timing synchronization algorithm, Farrow interpolation algorithm)
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