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QPSK Transmitter and I/Q Correlator Receiver is based on the technique of queing the information in a bit stream and on the receving end using FFT and some additive filters, as the addition of noise is made to infuse the need of a filter. Necessarily
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MATLAB program for OFDM generation and reception
This is a simple MCM communications system. The code is pretty self-explanatory. Here I have not used the cyclic prefix.
Transmitter End:
1. Generate random serial data with M symbols (RAND
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模拟QPSK发射和接受的一个程序，带I-Q修正，对于理解QPSK有很好的作用-QPSK Transmitter and I-Q Correlation Receiver
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QPSK modulation system with recover loops-This is a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. Th
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qpsk matlab simulink receiver and transmitter.
Quadrature Phase shift keying
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QPSK-MBOFDM发射接收机
QPSK调制的多频带OFDM（MB-OFDM）发射机，经过加性高斯噪声信道，接收机判断误码率。
-QPSK-MBOFDM launch QPSK modulation receiver multiband OFDM (MB-OFDM) transmitter, through the additive Gaussian noise channel, the receiver determine the error rate.
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两发射机一接收机在瑞丽信道下的QPSK调制仿真程序-Two channel transmitter for a receiver in Ruili Xin simulation program under QPSK modulation
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qpsk transmitter a receiver, in design to simulink with AWGN,noise.
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通信物理层处理，包括发射机和接收机，内容有前导处理，信道估计，信道编解码，BPSK、QPSK和8PSK调制与解调等。-Communication the physical treatment, including the transmitter and receiver, the content is leading processing, channel estimation, channel decoding, BPSK QPSK and eight PSK modulation and d
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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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This a model of a QPSK modulation system for transmission over a bandpass channel with fc = 100 Hz and B = 30 Hz and AWGN at the receiver. SRRC fi lters with excess bandwidth α = 0.18 are employed. The receiver includes an NDA timing recovery lo
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发射机的设计是采用m序列来扩展二进制数据流，将其扩频为宽频信号，并采用QPSK调制方式将信号调制后发送出去。信号经过AWGN信道传输到接收端。接收机采用相干解调原理解调信号，采用的解扩码序列与发射机扩频码序列完全相同，信号经解扩调制后，带宽恢复原始宽度。-Transmitter design is the use of m sequence to expand the binary data stream, the spread spectrum is a broadband signal, a
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关于OFDM的发射与接收完整源码，包括QPSK调制，加噪与CP等-On OFDM transmitter and receiver full source code, including QPSK modulation, noise and CP, etc.
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OFDM code for transmitter signal and the receiver using QPSK
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e Handbook Entry
Communication concepts: Fourier transforms, random signals, Transmitter
and receiver filters, matched filter, Nyquist criterion. Digital Modulation schemes:
M-ary ASK, QPSK, FSK, CPM, spectral analysis of modulated signals, ML and
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学习QPSK发射与接收的经典文献和源代码，可以认真学习(modeling of QPSK transmitter and receiver using MATLAB)
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该工程实现对单载波系统QPSK的频偏估计算法。调相信号在接收机相干解调时需要同频同相的参考载波，而发射机和接收机之间往往存在频率偏差，为了消除这种误差，必须在软件层面实现。使用了QPSK四相调制的信号特点进行载波频偏估计，经验证，效果较好。(This project implements frequency offset estimation algorithm for single carrier system QPSK. The phase modulation signal needs t
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实现基于STBC的MIMO_OFDM通信系统在不同信噪比情况下接收端的误比特率的仿真。发射端包括基于基带调制、空时编码、导频插入、IFFT、串并合并以及添加循环前缀；接收端包括去除循环前缀、取出导频估计信道、FFT运算以及并串合并，空时解码等。仿真中采用QPSK、空时编码采用4*3的复正交空时编码矩阵。OFDM子载波数为100，每个子载波传输66个符号，每个符号2比特。IFFT长度为512个符号。发射天线为3个接收天线为2个。(The BER simulation of MIMO_OFDM co
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