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Imagine this communication system: Bit Generator+DSS Spreader+QPSK Modulator --> AWGN Channel ---> QPSK Demodulator+Despreader.
The spreader converts a 4 bit sequence into a 32 chip sequence. So each bit is represented by 8 chips.
One interesting thing is to plot the BER(Eb/N0) of the QPSK...
Hi all!
Basically my project is a bit generator+spreader+modulator --> demodulator+despreader.
A 4 bit sequence is converted to a 32 chip sequence by the spreader.
If I use a QPSK and without AWGN channel, I get 0 BER before and after the despreader.
However when I use the MSK (or OQPSK) and...
Hi everyone.
I just want to plot the QPSK baseband spectrum from the output data of the QPSK simulink block.
However the output of this block are the symbol coordenates in the signal space and when I use "spectrum scope" i don't get the theorical spectrum for the qpsk (the sinc function..)...
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