OFDM/OQAM technology source
2016-08-23
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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
matlab
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技术
OFDMOQAM
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