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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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自己用的simulink串并，并串转换子系统-serial to parallel
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Simulation of a baseband QPSK mod/demod:
TX : a pseudo random bit stream generation, Serial to parallel conversion, QPSK Mapping (Gray coding), Signal power computation
Channel : AWGN channel
RX: Soft Demapping / Hard Demapping, Plot constellat
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it gives serial in parallel out code for ofdm in matlab
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serial to parallel converter
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16QAM的matlab仿真,非常有用,包括Bit mapping,modulation and demodulation,Bit demapping,Parallel to serial conversion,Bit error ratio-16QAM the matlab simulation, very useful, including Bit mapping, modulation and demodulation, Bit demapping, Parallel to serial
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用MATLAB中的SIMULINK实现串并变换。-Implemented in MATLAB SIMULINK serial-to-parallel conversion.
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Welch 算法是一种应用很广的经典功率谱估计算法。但是面对现在日益膨胀的海量数据，单纯在串行Matlab环境下运行Welch 算法势必耗费大量的运算时间。根据Welch 算法的原理，在Linux 集群环境及消息传递接口MPI 的支持下，采用主从并行编程模式，实现了一个开源的Welch 并行算法PMWelch。实验结果表明，PMWelch 不仅具有Matlab 下Welch 算法一样的运算结果，还可以大幅减少运行时间.-It is well known that Welch algorithm
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The implementation was built on Matlab/Simulink using
fundamental components in Simulink to demonstrate how
reliably complex modulation schemes can be built, cost
effectively and efficiently [5]. The design of ZigBee
transmitter using MSK mod
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正交频分复用(OFDM)技术是一种可以有效对抗符号间干扰(ISI)的高速数据传输技术。OFDM是一种特殊的多载波调制方式，它的基本思想是将高速传输的数据流通过串/并转换，变成在若干个正交的窄带子信道上并行传输的低速数据流。OFDM接收机有三个关键技术：信道估计技术，降低峰均比(PAPR)技术和同步技术。OFDM技术能有效的对抗多径衰落等，有着诸多的优点，但是OFDM有一个发展瓶颈，即OFDM信号的峰均功率比很大，很容易导致OFDM信号的交调失真和系统性能的下降。因而如何降低OFDM信号的峰均功率
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ofdm仿真，用matlab仿真实现ofdm，为初学者提供一条道路(The proposed secret data embedding and extraction in
OFDM is shown in figure 1.In order to achieve higher data
rate, the serial data stream bits are converted in to parallel data
output bits. Then the modulation s
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