MATLAB Answers


QPSK modulator and demodulator

Nitin Sapre さんによって質問されました 2019 年 8 月 7 日
最新アクティビティ Nitin Sapre さんによって 回答されました 2019 年 8 月 12 日
Can anyone help me How to modulate and demodulate using LLR Data of qpsk in matlab. But without uisng objeccs

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Nitin Sapre 2019 年 8 月 8 日
Yes I meant not to use "comm.qpskmodulator" and all... Yes I want to write myself.
Walter Roberson
2019 年 8 月 8 日
What does your textbook say that the theory of qpsk modulation is?
Nitin Sapre 2019 年 8 月 8 日
It says that we need to take two bit at a time even and odd bits then multipy signals with inphase and quadratuer phase components. ul get modulated output. But How to get demodulated output using LLR I am not able to understand

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回答者: Kaashyap Pappu 2019 年 8 月 12 日

To perform QPSK modulation and demodulation, you can use the “pskmod” and “pskdemod” functions by setting the order of modulation to 4.
The “pskmod” function is elaborated upon here, with the example of QPSK modulation provided, and the “pskdemod” function is elaborated upon here, with an example of the entire process of modulation, channel modelling and demodulation.
Hope this helps!

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回答者: Nitin Sapre 2019 年 8 月 12 日

Thanks for soln, but I have done with this method. I have already said that i Dont want to use objects. i need to code it fully by own means. if anyone can help me to design a modulator without using objects it will be much appretiated.

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