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2下载：
此代码为π_4DQPSK解调源程序，用MATLAB实现,使用差分方式。-This demodulation π_4DQPSK source code using MATLAB to achieve, the use of differential mode.
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OFDM系统仿真，信号采用卷积编码和交织技术、采用16-QAM和QPSK两种调制方式，干扰分别采用多径衰落和瑞利衰落两种。-OFDM system simulation, signal the use of convolutional coding and intertwined technology, using 16-QAM and QPSK modulation in two ways, interference were used to multipath fading and Rayl
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Simulation program to realize OFDM transmission system using( proposed slantlt transform instead FFT transform)with pilot channel estimation in a fading channel for (BPSK,QPSK,8PSK and 16PSK) modulation and for two type of error plot BER(Bit error ra
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There are 5sample files of qpsk, ofdm, scfde, alamouti and space time codings.
those of 5samples can be useful for using matlab user.
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turbo码的编解码程序，采用max-log-map算法，简单易用。程序采用QPSK调制，信道为AWGN-turbo code decoding process, using max-log-map algorithm, easy to use. Program uses QPSK modulation, AWGN channel is
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OFDM完整的程序，比较简单，采用QPSK调制，加了高斯噪声-OFDM complete procedure is relatively simple, using QPSK modulation, Gaussian noise added
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给出了不同分割数量V条件下的系统的PAPR性能，分割方法为随机分割，辅助相位集合的相位数P=4(即 可选择的范围为{0,π/2,π,3π/4})，N=128，子载波采用QPSK调制，仿真的OFDM符号数为1000个。-V gives the number of different partitions of the system under PAPR performance of random segmentation segmentation, the number of secondary
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图4.7给出了V=4，相位集合的相位数分别为P=1、2、4、8时的随机分割的PTS-OFDM系统的CCDF的性能图。仿真参数：分割方法为随机分割，子载波数N=128，子载波数据采用QPSK调制，仿真的OFDM符号数为1000个。-Figure 4.7 shows the V = 4, the phase of the collection phase, respectively P = 1,2,4,8 were separated when the PTS-OFDM system perform
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matlab环境下，采用802.11a系统物理层参数，一个长训练字与6个OFDM符号构成一帧，瑞丽信道，多普勒100Hz，采用QPSK调制，接收端估计误比特率-matlab environment, using 802.11a physical layer parameters, a word with six long training OFDM symbols of a frame, Ruili channel, Doppler 100Hz, using QPSK modulation, t
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ofdm的matlab仿真程序，使用qpsk调制,直接打开ofdm_matlab.m程序即可-ofdm matlab simulation program, using qpsk modulation, the program can directly open ofdm_matlab.m
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关于采用最大似然同步的OFDM的MATLAB仿真算法，其中调制采用的是QPSK。-About using the maximum likelihood algorithm MATLAB simulation of synchronous OFDM, which uses a modulation QPSK.
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This program demonstrates OFDM systems using QPSK modulation. OFDM system uses fft/ifft technique to transmit or receive parallel data streams.
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论述了BPSK、QPSK、16QAM、2FSK 调制和解调基本原理，以及各种调制方式的在AWGN 信道和平坦Raleigh 信道下的误码性能。同时介绍了OFDM 的调制解调原理。并使用MATLAB编写程序，对其进行了实验仿真。-It discusses the BPSK, QPSK, 16QAM, 2FSK basic principles of modulation and demodulation, and various modulation error performance in AW
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这个程序是用来仿真多小区多用户，已知信道信息，采用OFDM，QPSK调制下的误码性能分析，特点是将预编码参数放在频域处理。-This program is used to simulate multi-user multi-cell, known channel information, using OFDM, QPSK modulation BER performance under analysis, is characterized by the pre-coding parameters
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用matlab 实现ofdm信道下qpsk 的调制(Using MATLAB to achieve QPSK modulation under OFDM channel)
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MIMO OFDM using FFT with modulation QPSK
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OFDM调制全流程，带中文注释，使用QPSK映射与逆映射(The whole process of OFDM modulation, with Chinese annotations, using QPSK mapping and inverse mapping)
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使用OFDM-QPSK的调制解调代码，包含一部分时域频域图(Using OFDM-QPSK modulation and demodulation code, contains part of the time-domain frequency domain diagram.)
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