Abstract: This paper proposes an improved QPSK modulation scheme which is called special QPSK. The key aspect of special QPSK is that the synchronous sequence is hidden in the information bits and ...

Abstract: This work aims to design and implement Quadrature Phase Shift Keying (QPSK) baseband modulation-demodulation (MODEM) system on the CEVA-XC321 fixed point digital signal processor (DSP) and ...

We propose a four-dimensional quadrature phase shift keying (4D-SS-QPSK) modulation transmission scheme based on entropy-coding-aided symbol selection. The proposed scheme integrates Huffman coding ...

This demodulator is suitable for the quadrature phase-shift keying (QPSK) modulator previously published by the same author, "Novel Low-Cost QPSK Modulator Needs No Adjustments" (electronic design, ...

To implement a Python program for the modulation and demodulation of Quadrature Phase Shift Keying (QPSK) and visualize the output. Input Binary Data: The original binary data to be modulated in pairs ...

Developed a user-friendly GUI following a block diagram timeline. Enabled users to choose various modulation and demodulation processes. Processed both real-time and recorded audio signals of ...

ABSTRACT: Wireless Underground Sensor Networks (WUSNs) offer promising solutions for applications such as pipeline monitoring, agriculture, and border patrol, but they face significant challenges due ...