OFDM/OQAM技术源码我要分享

OFDM/OQAM technology source

matlab 源码 技术 OFDMOQAM

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代码描述

中文说明:首先将复数符号通过取实和取虚分成实部符号虚部符号,实部和虚部符号再分别通过 OQAM 调制,使二者错开一个相位,并保证二者保持正交,然后分别经滤波器组 G ( n )和 G ( n − N2)来消除多径信道影响产生的 ISI,经加法器将信号相加形成发射信号 s ( t ),过多径信道、高斯信道后,接收信号 r ( t )分别经滤波器组 G ( n− 1)和 G ( N 2− n)消除发射机滤波器组的影响,再分别通过N 点 FFT 变换把接收信号变为频率形式,然后通过 OQAM 解调使得错开的实、虚部相位回到相同的相位,保持实、虚部信号同步,最后收到的信号和 CE 得到的信道冲激响应系数一起进入迫零(Zero Forcing, ZF)均衡器解调出实、虚部符号,经取实、取虚后,最后合成复数形成解调数据符号


English Description:

Firstly, the complex symbol is divided into real part symbol and imaginary part symbol by taking real part and imaginary part, and then the real part and imaginary part symbols are modulated by OQAM to stagger the two by one phase and keep them orthogonal. Then the ISI caused by multipath channel influence is eliminated by filter banks g (n) and G (n − N2) respectively, and the transmitted signal s (T) is formed by adding the signals )After passing the multipath channel and Gaussian channel, the received signal R (T) is filtered by the filter banks g (n − 1) and G (N 2 − n) to eliminate the influence of the filter banks of the transmitter, and then the received signal is transformed into the frequency form by the N-point FFT transform, and then transmitted by OQAM Demodulation makes the staggered real and imaginary parts return to the same phase, keeping the real and imaginary parts synchronous. Finally, the received signal and the channel impulse response coefficient obtained by CE go into zero forcing (ZF) equalizer to demodulate the real and imaginary part symbols. After taking the real and imaginary parts, the complex number is synthesized to form the demodulation data symbol


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